Weather and Avalanche Log

Date Map Thumb Northern Areas Southern Areas Wind Speed Wind Direction Avalanche Activity Notes
Friday 5/2/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher
Thursday 5/1/25 0.2/0" Brackett
0.1/0" Shower
0.1/0" Lone
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		5-10
G10-20 		NW Large recent wet loose avalanches at Bridger

Temps dipped below freezing again
Wednesday 4/30/25 0.3/0" Alpine
0.6/5" Shower
0.6/5" Timber
 0.3/2" Carrot
0.3/2" Madison
0.4/3" Wt Elephant
0.5/4" Fisher 		5-15
G15-30 		SW->NW

Below freezing air temps overnight
Tuesday 4/29/25 0.0/0" Brackett
0.1/1" Shower
0.0/0" Lone
 0.1/1" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.1/1" Fisher 		5-15 G20
G40 Bridger Range 		W-SW
Monday 4/28/25 1.4/7" Alpine
0.5/1" Lick Creek
0.5/4" Timber
 0.6/3" Carrot
0.1/0" Madison
0.1/0" Wt Elephant
0.5/4" Fisher 		5-15 G30-40
G60 Bridger Range 		W-N
Sunday 4/27/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15 G35 E-NE
Saturday 4/26/25 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		20-30 G35-45 North
5-10 G20 South and Cooke 		S-E
Friday 4/25/25 0.0/0" Bridger
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.2/2" Madison
0.2/2" Sawtelle
0.0/0" Fisher 		5-10 G10-15
25 G55 in Bridgers 		NE-SE
Thursday 4/24/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.2/2" Carrot
0.0/0" Madison
0.0/0"
0.3/3" Fisher 		5-10 G10-20
20 G35 in Bridgers 		N-E
Wednesday 4/23/25 0.0/0" Brackett
0.0/0" Shower
0.1/2" Lobo
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-10
G20-25 		SW-E-NE
Tuesday 4/22/25 0.4/3" Alpine
0.3/3" Shower
0.1/1" Lone
 0.0/0" Carrot
0.1/1" Madison
0.0/0" Wt Elephant
0.1/1" Fisher 		10-20
G30-43 		SW-W-NW
Monday 4/21/25 0.4/5" Alpine
0.4/4" Shower
0.1/1" Timber
 0.1/1" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.4/4" Fisher 		5-15
G25-40 		W-SW
Sunday 4/20/25 0.1/1" Alpine
0.0/0" Shower
0.1/2" Timber
 0.0/1" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15
G20-32 		W, NW-SW
Saturday 4/19/25 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-20 G20-35 W-NW Skier-triggered small soft slab, northern Bridger Range;
small wind slab and dry loose slides
Friday 4/18/25 0.1/1" Brackett
0.1/2" Shower
0.1/3" Timber
 0.5/6" Carrot
0.1/4" Madison
0.1/1" Wt Elephant
0.2/2" Fisher 		5-10 G20-30 NW-NE Wet loose in northern bridgers
Thursday 4/17/25 0.5/7" Alpine
0.4/7" Shower
0.2/3" Timber
 0.4/4" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.5/5" Fisher 		Bridgers
15-20 G40
Other areas
5-10 G20
 Bridgers
E
Other areas
N

East wind Bridgers
Wednesday 4/16/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		5-25
G25-35 		SW-W-NW

Temps @0400 are 30-39 F

Yesterday's highs: 40-55 F, 
Tuesday 4/15/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15 G15-30 W-S

Temps: 30 degrees F +/-

Fisher 18 F
Monday 4/14/25 0.2/2" Bridger
0.2/2" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15 G15-30 W-NW

Temps: Teens to low 20s F; 8 Degrees Lone Mountain Summit
Sunday 4/13/25 0.3/3" Alpine
0.8/6" Shower
0.3/3" Lone
 0.1/0" Carrot
0.1/0" Madison
0.0/0" Wt Elephant
1.1/10" Fisher 		Yesterday
20 G 50
This morning
5-12
G 30 		Yesterday
S-W-NW
This morning
W&NW 		Wind Slab Activity in Cooke City

Thunder and Lightning yesterday

Temps well below freezing this morning.
Saturday 4/12/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-10
G15-20 		SW

Above freezing air temps and cloudy skies
Friday 4/11/25 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-25 G30-50 S-W wet loose avalanches south of Cooke

Low temperatures above freezing
Thursday 4/10/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		yesterday:
35 G60
morning:
10-20
G20-30 		W-NW
Wednesday 4/9/25 0.3/2" Alpine
0.3/2" Shower
0.1/1" Lone
 0.2/1" Carrot
0.6/4" Madison
0.3/2" Wt Elephant
0.6/5" Fisher 		10-20
G20-40 		W, NW Thin Wind Slab Avalanche near Hardscrabble;
Wind slabs in N. Madison
Tuesday 4/8/25 0.2/1" Alpine
0.1/0" Shower
0.3/1" Lobo
 0.3/1" Carrot
0.4/0" Madison
0.6/1" Wt Elephant
0.0/0" Fisher 		15-30 G45-55 W-SW
Monday 4/7/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-20 G20-35 W-S Skier triggered and natural wet loose near Cooke;
Skier triggered wind slab near Cooke

Low temps: mid 20s to mid 30s F
Sunday 4/6/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-25
G25-35 		W, SW, NW Wet Loose Avalanches Cooke City
Saturday 4/5/25 0.1/1" Bridger
0.1/1" Shower
0.0/0" Timber
 0.1/1" Carrot
0.1/1" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10 G20 W-N Skier triggered wind slab on Saddle;
Snowboarder triggered wet loose slide in Bridgers;
Skier carried in wind slab on Naya Nuki;
Reactive wind slabs near Cooke City;
Natural wind slabs and loose snow near Cooke;
natural loose snow slides in Bridgers
Friday 4/4/25 0.4/7" Bridger
0.4/7" Shower
0.3/5" Bavaria
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		5-10 G15-20
15 G25 Bridgers 		N-NW
E in Bridgers
Thursday 4/3/25 0.2/3" Brackett
0.2/3" Shower
0.2/2" Lone
 0.7/7" Carrot
0.0/0" Madison
0.2/2" Sawtelle
0.3/4" Fisher 		0-8
G16 		W, NW, S, SW A Pair of Small Avalanches on Saddle Peak;
Wind Slab Avalanche Near Cooke
Wednesday 4/2/25 0.5/5" Brackett
0.4/4" Shower
0.3/3" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.1/1" Fisher 		5-10 G18 W Beehive/Bear Obs ;
Skier Triggered Wind Slab - Ice Cream Scoop
Tuesday 4/1/25 1.4/13" Alpine
0.1/1" Shower
0.4/6" Timber
 0.4/5" Carrot
0.7/6" Madison
0.9/10" Wt Elephant
0.4/4" Fisher 		10-20 G30-45 W-SW Storm/Wind Slab N aspect 9600', Cooke City
Monday 3/31/25 0.2/2" Brackett
0.2/2" Shower
0.4/4" Lone
 0.1/1" Carrot
0.0/0" Madison
0.2/2" Wt Elephant
0.3/3" Fisher 		15-25
G25-44
Yesterday: 0-10 		SW-S Wet Loose Avalanche Between Saddle Peak
Sunday 3/30/25 0.5/5" Brackett
0.9/11" Shower
0.6/7" Great Bear
 0.1/1" Carrot
0.1/1" Madison
0.1/1" Wt Elephant
0.4/6" Fisher 		0-10 G15
Overnight:
10-15 G25-35 		E-SE-SW Small wind slabs in Bridgers, Ross Peak;
Storm snow avalanches on Throne;
Dry Loose near Fairy Lake
Saturday 3/29/25 0.3/2" Alpine
0.2/2" Shower
0.0/0" Timber
 0.1/1" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-15 G25-40
20-30 G40-55 Lionhead and Sawtelle 		W-S Point releases, wet loose in Beehive/Middle Basin

Temps below freezing everywhere
Friday 3/28/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-20 G30-60 W-S-SE

Air temps above freezing near Bozeman

Below freezing everywhere else
Thursday 3/27/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15 G34
less in Bridgers 		S & SW

Air temps above freezing

Clear skies
Wednesday 3/26/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15 G30-40 SW-NW Wet Loose Avalanches in Airplane Bowl

Temps most at or slightly above freezing
Tuesday 3/25/25 0.1/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.1/0" Madison
0.2/0" Wt Elephant
0.1/1" Fisher 		10-20 G40-70 W-NW Wet Loose Avalanche Bradleys Meadow;
Wind slabs North of Cooke City;
Wet slides in Gallatin Canyon

Temps around 32 degrees
Monday 3/24/25 0.2/1" Brackett
0.0/0" Shower
0.1/2" Timber
 0.1/1" Carrot
0.3/3" Madison
0.1/1" Wt Elephant
0.4/6" Fisher 		15-35
G25-63 		SW-W-NW Natural Avalanche on the Fin ;
Wind Slab Avalanche on Saddle Peak
Sunday 3/23/25 0.2/2" Brackett
0.2/2" Shower
0.5/6" Timber
 0.1/1" Carrot
0.3/3" Madison
0.3/3" Wt Elephant
0.3/3" Fisher 		10-20
G20-55 		SW-NW-N
Saturday 3/22/25 0.1/1" Brackett
0.0/0" Shower
0.1/1" Lone
 0.4/4" Carrot
0.4/4" Madison
0.5/5" Wt Elephant
0.4/4" Fisher 		15-35 G40-60 SW-NW Triggered avalanche in Taylor Fork;
Wind slabs near Buck Ridge;
Natural avalanche north of Cooke City
Friday 3/21/25 0.3/2" Brackett
0.1/1" Shower
0.4/8" Timber
 0.2/4" Carrot
0.2/3" Madison
0.3/4" Wt Elephant
0.4/4" Fisher 		15-25 G40-60 SW-NW
Thursday 3/20/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		14-27
G24-36
Hyalite 34 G 48 		W & SW
Wednesday 3/19/25 0.0/0" Brackett
0.1/2" Shower
0.1/2" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.1/2" Fisher 		5-10
G15 		W & NW Persistent slab avalanche in the Taylor Fork ;
Small wind slab avalanches on Saddle Peak
Tuesday 3/18/25 0.1/1" Brackett
0.2/2" Shower
0.1/3" Timber
 0.4/4" Carrot
1.0/10" Madison
0.7/7" Wt Elephant
0.5/5" Fisher 		10-15 G30-40 W-N

AVALANCHE WARNING: Island Park, Lionhead, Cooke City
Monday 3/17/25 1.0/9" Alpine
0.4/5" Shower
0.4/4" Lone
 0.6/6" Carrot
1.2/10" Madison
2.0/20" Wt Elephant
1.4/14" Fisher 		25-50 G65-100
15 G65 Bridger 		W-SW Wind Slab Avalanches in N Bridgers;
Wind Slab Avalanches on Scotch Bonnet and Wolverine;
Avalanche at Goose Lake

Warming trend in the south - upside-down snow. Peak Gust: 100 mph on LH Ridge

AVALANCHE WARNING: Island Park, Lionhead, Cooke City
Sunday 3/16/25 0.3/3" Brackett
0.0/0" Shower
0.3/3" Lone
 0.3/3" Carrot
0.6/5" Madison
0.7/6" Wt Elephant
0.4/4" Fisher 		15-25
G35-50 		SW-W Small wind slabs on Buck Ridge;
Isolated Wind Slabs in S. Bridger Range;
Small Wind Slab avalanche, Blackmore;
Many Wind Slab Avalanches at Lionhead
Saturday 3/15/25 0.1/1" Bridger
0.1/0" Shower
0.1/3" Timber
 0.2/3" Carrot
0.3/3" Madison
0.4/4" Wt Elephant
0.1/1" Fisher 		5-20
G20-35 		W-SW Wind Slabs in Frazier Basin;
Dry loose avalanches in Bridgers;
Dry Loose avalanches near Cooke
Friday 3/14/25 0.5/7" Bridger
0.6/6" Shower
0.4/10" Lookout
 0.6/6" Carrot
0.6/8" Madison
0.9/8" Wt Elephant
0.4/5" Fisher 		10-20 G20-40 SW-NW Small Wind Slab Avalanches on Woody Ridge;
small dry loose slides north of Cooke;
Snowmobiler triggered 3 foot deep slide Sunlight Basin;
Small storm slabs and dry loose in Cooke ;
Old Wind Slab Avalanche South of Cooke
Thursday 3/13/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.2/2" Carrot
0.1/1" Madison
0.1/1" Wt Elephant
0.0/0" Fisher 		20-40
G 50-60 		S Island Park soft slabs
Wednesday 3/12/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
/ Wt Elephant
0.0/0" Fisher 		25-35
G50 		W & SW
Tuesday 3/11/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-35 G60 W-SW
Monday 3/10/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-40 G60 W-SW

Temperatures in Bridgers above freezing
Sunday 3/9/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15
G25-35 		W-NW recent small wind slabs at Lionhead
Saturday 3/8/25 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-20 G20-30
25 G40 Bridgers 		SW-NW Skier triggered Wind Slab Avalanches in Frazier Basin
Friday 3/7/25 0.5/6" Brackett
0.3/5" Shower
0.2/5" Great Bear
 0.3/4" Carrot
0.2/2" Madison
0.5/5" Wt Elephant
0.1/1" Fisher 		5-10 G15-25
35 G55 Bridgers 		E-N Loose avalanches on Blackmore;
Fresh reactive wind slabs N. Bridgers;
small loose snow slides N. Bridgers
Thursday 3/6/25 0.0/0" Brackett
0.0/0" Shower
0.1/1" Timber
 0.1/1" Carrot
0.1/3" Madison
0.2/2" Wt Elephant
0.0/0" Fisher 		2-9 G 18
Bridger Ridge
30 G48 		E and NE
Wednesday 3/5/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.1/1" Fisher 		7-14 G20-30
G40 Hyalite 		W Loose snow avalanches around Blackmore

small increase in winds yesterday afternoon/evening
Tuesday 3/4/25 0.2/4" Alpine
0.3/2" Lick Creek
0.1/2" Bavaria
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-10 G 25 W-N
Monday 3/3/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15
G15-25 		E-SE-SW-W-NW-N

Temps 25-35 F this morning. Yesterday high temps: 34-49 F
Sunday 3/2/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15
G15-30 		NW-W-SW Wet Loose Avalanches, W Miller Ridge

Temps 28-38 F this morning, 5-10 degrees warmer than yesterday morning.

Yesterdays high temps: 31-48 F
Saturday 3/1/25 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-20 G20-35 W-NW Cornice Fall Avalanche in Beehive;
Natural Wet Loose Avalanches on solar aspects north of Bridger Bowl ;
Wet Loose Avalanche Pioneer Mountain ;
Cornice Fall Avalanches in upper South Cottonwood ;
Wet slides in S. Madison
Friday 2/28/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-20 G30-50 NW-W Snowmobile triggered 3-5' deep hard slab at Lionhead;
Snowmobile triggered slide in Airplane Bowl;
Small PWL Avalanche in Carrot Basin
Thursday 2/27/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-15 G 20 W & NW Rider triggered slide at Cabin Creek;
Small PWL Avalanche in First Yellow Mule
Wednesday 2/26/25 0.0/0" Brackett
0.1/2" Shower
0.2/1" Timber
 0.1/1" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.3/2" Fisher 		10-20 G40-60 SW-NW Cornice Fall Triggered Avalanche in Sage Basin ;
Old slide in hell roaring drainage
Tuesday 2/25/25 0.2/3" Brackett
0.2/3" Shower
0.2/3" Lone
 0.2/2" Carrot
0.1/1" Madison
0.2/0" Wt Elephant
0.1/1" Fisher 		20-35 G55-80 W-SW Rider buried near Cooke City, close call;
Wind slab avalanche north of Crown Butte;
Cornice fall triggered slide in Sunlight Basin;
Cornice Fall Wind Slab Avalanche in Storm Castle Creek

Bridger Weather was not reporting, Sawtelle rimed again
Monday 2/24/25 0.1/0" Alpine
0.2/0" Shower
0.4/4" Timber
 0.7/3" Carrot
0.4/3" Madison
0.3/3" Wt Elephant
0.9/6" Fisher 		15-35
G45-88 		SW-W Snowmobile Triggered Avalanche Near Lulu Pass;
Wet Snow Avalanches Hit Hyalite Road;
Small Wind Slab on Republic Peak;
Remote triggered persistent slab east of Mt. Abundance;
Many natural wind slab avalanches and cornice falls;
Old Avalanche N Madison
Sunday 2/23/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.1/1" Carrot
0.1/0" Madison
0.1/0" Wt Elephant
0.1/1" Fisher 		15-25
G25-60 		W-SW
W-NW Cooke, IP 		Rider-Triggered Wind Slab;
Skier triggered wind slabs in Republic Creek
Saturday 2/22/25 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-15 G20-30
25 G45 Hyalite 		W-NW Cornice triggered persistent slab in Suce Creek;
Natural wind slabs in N. Bridgers;
Persistent Slab Avalanches Tepee Basin;
Snowmobile triggered avalanche east of Mt. Abundance
Friday 2/21/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-10 G10-20
20 G40 Bridgers 		W-NW Whumpfs and Shooting Cracks in Sunlight Basin ;
Snowmobile Triggered Avalanche and Partial Burial in Tepee Basin;
Pinwheels and small wet slide in Gallatin Canyon;
Small wet loose slides in Bridgers;
Snowmobiler triggered avalanches in Taylor Fork
Thursday 2/20/25 0.2/2" Alpine
0.1/1" Shower
0.1/2" Timber
 0.2/2" Carrot
0.1/1" Madison
0.1/1" Wt Elephant
0.1/1" Fisher 		Bridgers & Hyalite
10-14 G20-32
Other areas
5-10 G 16 		W & NW Wet Loose Avalanche near Mt Zimmer

Winds were a bit stronger yesterday midday
Wednesday 2/19/25 0.1/1" Alpine
0.3/4" Shower
0.2/3" Lone
 0.2/3" Carrot
0.1/2" Madison
0.1/1" Wt Elephant
0.0/0" Fisher 		8-18
G 20-25 		W & NW Remotely Triggered Avalanche in Black Canyon;
Remotely Triggered Avalanche Lionhead;
Frazier Basin Avalanches;
Avalanche on Saddle Peak, Bridgers;
Wind Slab Avalanches near Mt Zimmer;
PWL and Wind Slab Avalanches in the S Madisons

Strongest winds Tuesday morning/midday NW
Tuesday 2/18/25 0.9/11" Brackett
0.6/8" Shower
0.5/11" Timber
 0.3/5" Carrot
0.3/4" Madison
0.3/4" Wt Elephant
0.5/6" Fisher 		10-20 G35-45 W-N Cornice triggered natural avalanche, Saddle Peak

0.5/7" Snow at Black Bear SNOTEL
Monday 2/17/25 1.2/11" Brackett
0.3/4" Shower
0.4/12" Timber
 0.5/6" Carrot
0.5/6" Madison
0.5/5" Wt Elephant
0.6/9" Fisher 		10-20
G30-40 		SW-W-NW Natural Avalanche Republic Creek;
Ski Cut Avalanche in Wyoming Bowl;
Storm snow instabilities;
Intentionally Triggered Avalanche on Ramp;
Natural storm slabs northern Bridgers;
Small Wind Slab Avalanche On Middle Peak;
Small storm slabs Bridger Ridge;
Wind slabs, cornice collapses on Mt. Blackmore
Sunday 2/16/25 0.3/6" Alpine
0.1/2" Shower
0.2/3" Timber
 0.3/5" Carrot
0.3/4" Madison
0.3/4" Wt Elephant
0.2/3" Fisher 		10-20 G35 W-NW Wind Slab/Persistent Slab Avalanche in Lionhead;
Storm Slab Avalanche between Blackmore and Elephant;
Intentionally triggered soft slab avalanches in Lick Crk;
Soft slab avalanche in Republic Creek;
PWL Avalanche in Muddy Creek
Saturday 2/15/25 0.7/7" Brackett
0.5/5" Shower
0.9/16" Timber
 0.3/4" Carrot
0.3/3" Madison
0.2/2" Wt Elephant
0.3/4" Fisher 		10-15 G20-30 W-NW Many Wind Slab Avalanches Hayden Creek;
Dry Loose Snow Avalanche Ghost Couloir;
Snowmobile triggered avalanche Buck Ridge
Friday 2/14/25 0.0/0" Brackett
0.0/0" Shower
0.1/1" Timber
 0.1/1" Carrot
0.3/3" Madison
0.2/2" Wt Elephant
0.3/3" Fisher 		15-25 G30-40 S-W Small wind slab avalanches in south cottonwood
Thursday 2/13/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-20
G 30 		W Wind Slab Avalanche on East Face of Mt Blackmore ;
Wind Slab Avalanche in Hyalite ;
Small Wind Slab Taylor Fork;
Small slide in Lionhead;
Small wind slabs in Hyalite;
Wind Slab avalanche at Taylor Fork

7 to 13 degrees warmer but temps still below 0F
Wednesday 2/12/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5 N Cornice Triggered Avalanche on Mineral Mountain;
Wind Slab Avalanches, Storm Castle Creek
Tuesday 2/11/25 0.1/1" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.1/1" Madison
0.1/2" Wt Elephant
0.0/0" Fisher 		5-10 G20 W-NW Wind Slab Avalanche North Bridgers

Temps: Negative single digits to neg. teens F
Monday 2/10/25 0.3/6" Bridger
0.1/1" Shower
0.1/1" Lone
 0.1/1" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-15
G25-35 		SW-W-NW

BBSP measured 6"=0.25" SWE at top of Bridger
Sunday 2/9/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.1/1" Carrot
0.1/2" Madison
0.2/3" Wt Elephant
0.3/3" Fisher 		15-20
G25-40 		W, NW, SW Wind Slab Avalanche in the Bridgers;
Snowboarder triggered wind slabs (2) near Cooke;
Natural wind slab avalanche near Cooke;
Small rider triggered Avalanche Lionhead;
Two Rider triggered slides in Gravelly Range;
Wind Slab Avalanches near Zimmer Creek ;
Wind Slab Avalanche in Republic Creek. ;
Persistent Slab Avalanches in Taylor Fork
Saturday 2/8/25 0.2/4" Brackett
0.2/4" Shower
0.3/3" Timber
 0.3/4" Carrot
0.6/7" Madison
0.4/4" Wt Elephant
0.7/9" Fisher 		10-15 G30-50 W-NW Soft Slab Avalanche near Round Lake;
Wind slab avalanches in the northern gallatin
Friday 2/7/25 0.3/3" Brackett
0.1/1" Shower
0.2/3" Timber
 0.4/3" Carrot
0.4/3" Madison
0.4/4" Wt Elephant
0.4/4" Fisher 		15-30 G25-50 W-S-SE
E in Bridgers 		Soft Slab Avalanches in Hyalite ;
Shallow soft slabs in Bridgers
Thursday 2/6/25 0.6/9" Alpine
0.4/4" Shower
0.4/4" Lone
 0.3/3" Carrot
0.3/3" Madison
/
0.4/4" Fisher 		15-30
G40-60 		W and NW

Mountain temps 25 degrees colder than yesterday
Wednesday 2/5/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.1/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-35 G70 S-SW Reactive Storm Slabs near Upper Brackett Creek ;
Reactive Storm Slabs on Mount Ellis ;
Natural Avalanches in Wolverine Bowl

90 MPH gust Lone Mountain

STRONG Inversion around Bozeman (-5F at Bridger Base/ 34 F at Ridge)
Tuesday 2/4/25 0.3/3" Brackett
0.1/1" Shower
0.3/3" Lone
 0.2/2" Carrot
0.2/3" Madison
0.2/2" Wt Elephant
0.7/6" Fisher 		25-45 G80
10-15 G55 Cooke City/ Bridger Range 		W-S Small soft slab avalanches near Fairy Lake ;
Recent Avalanches near Cooke City;
Natural and Snowmobile Triggered Avalanches at Lionhead ;
Skier Triggered Avalanche Saddle Peak

Temperatures -1F at the Base of Bridger Bowl. Rising to near freezing everywhere else.
Monday 2/3/25 0.6/7" Brackett
0.8/8" Shower
0.8/8" Timber
 0.4/3" Carrot
1.0/7" Madison
0.6/4" Wt Elephant
1.2/7" Fisher 		10-25 G25-60 SW-W-NW Recent Wind Slab Avalanches in 2nd Yellow Mule

Black Bear SNOTEL near IP got 1.6" SWE/24 hrs and 2.6" SWE over last 48hrs, and 3.4" SWE since Friday.

AVALANCHE WARNING: Cooke City, West Yellowstone, Island Park
Sunday 2/2/25 0.1/1" Alpine
0.2/2" Shower
0.3/5" Lobo
 0.3/3" Carrot
0.6/6" Madison
0.6/6" Wt Elephant
0.5/5" Fisher 		15-25
G25-45 		SW-W Small wind slab avalanches near Round Lake ;
Several Older Wind Slab Avalanches on Blackmore

New snow in south estimated at 10%. depths didn't change, but SWE did.
Saturday 2/1/25 0.0/0" Alpine
0.1/2" Shower
0.2/4" Timber
 0.4/4" Carrot
0.6/5" Madison
0.6/4" Wt Elephant
0.6/12" Fisher 		20-35 G40-55 SW-NW Small Loose Snow Avalanches in South Cottonwood Basin;
Wind Slab Avalanche near Buck Weather Station;
Small wind slab avalanche north of Cooke City
Friday 1/31/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		15-25 G30-45
10 G20 Cooke 		SW-W Small windslabs on Mt. Blackmore
Thursday 1/30/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		Point releases onTwo Top
Wednesday 1/29/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-13
Gusts 24-32 Bridgers 		W&NW Wet loose avalanches in Sheep Creek

Inverted temps

0 deg F at Bzn Airport

27 deg F at Bridger Ridge
Tuesday 1/28/25 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-25 G40 North
5-10 G20 South 		W-NW-N Wind Slab avalanche on Woodward Mtn.

Temperatures inverted: 20s F upper elevation, single digits to teens valleys
Monday 1/27/25 0.0/0" Bridger
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		North 15-35 G45
South 5-10 G20 		W-NW Wind Slab Avalanche in Hyalite

Strong wind at all elevations in the Bridger Range
Sunday 1/26/25 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.1/1" Wt Elephant
0.0/0" Fisher 		10-15
G15-20

25G30
@Bridger 		NW-N

W-SW
@Bridger 		Small wind slab avalanche in the Playground;
Shooting Cracks in the Bridgers;
Wind Slab Avalanche on Alex Lowe peak
Saturday 1/25/25 0.3/7" Bridger
0.5/7" Shower
0.4/7" Lobo
 0.2/3" Carrot
0.1/1" Madison
0.1/3" Wt Elephant
0.2/2" Fisher 		5-15 G20-40 W-N
Friday 1/24/25 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		20-25 G30-50 S-W Touchy Storm Slab Avalanches in Hyalite;
Large Persistent Slab Avalanche in Hayden Creek ;
Recent avalanche activity in Cedar Basin
Thursday 1/23/25 0.3/16" Bridger
0.2/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.2/0" Fisher 		10 G15-25 NW Thin wind slab in Hyalite;
Deep Persistent Slab Avalanche up Republic Creek

Top of Bridger Lift storm total 16" snow/0.25" swe (1.5% density!)
Wednesday 1/22/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher

Values need to be corrected. Website was down so weather for this day did not get enetered.
Tuesday 1/21/25 0.0/0" Alpine
0.0/0" Shower
0.0/0" Bavaria
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-30 G55 SW-NW Old persistent slab avalanche up Republic Creek

Temps Range from -11 F LH Ridge to +13 F in Hyalite
Monday 1/20/25 0.4/4" Bridger
0.1/1" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		15-25
G30-40 		NW-W

Temps -27 to -15 F
Sunday 1/19/25 0.1/1" Brackett
0.1/1" Shower
0.1/1" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		10-15
G20-33 		W, NW Small soft slab avalanche south of Bradley's Meadow;
Long shooting cracks in Cabin Creek;
Whumphs at Fairy Lake;
Thin wind slab in Maid of the Mist;
Wind Slab on E Henderson
Saturday 1/18/25 0.1/1" Bridger
0.3/5" Shower
0.1/4" Bavaria
 0.3/5" Carrot
0.1/1" Madison
0.1/1" Wt Elephant
0.1/1" Fisher 		10-15 G20-30 N-W

Temps below 0 F.
Friday 1/17/25 0.1/1" Bridger
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		20-30 G50-60 North
10-20 G30 South & Cooke 		SW-W
Thursday 1/16/25 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-20
G25-30 		W & SW
NW Cooke 		Soft Slab Avalanche on North Face of Blackmore

5-7 degrees warmer starting

Some places at yesterday's hi temp
Wednesday 1/15/25 0.0/0" Bridger
0.0/0" Shower
0.0/0" Lobo
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15 G35
20 G40 Bridger Range 		W-N Wet Loose Avalanches in Hyalite ;
Avalanche on Red Mountain
Tuesday 1/14/25 0.1/3" Bridger
0.1/2" Shower
0.1/2" Bavaria
 0.0/0" Carrot
0.0/0" Madison
0.1/1" Sawtelle
0.0/0" Fisher 		5-15 G35
25 G40 Bridger Range 		W-N
Monday 1/13/25 0.2/5" Bridger
0.2/4" Shower
0.1/2" Lobo
 0.1/1" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.2/2" Fisher 		10-20 G25
G38 Bridgers 		NW-W-SW Persistent Slab Avalanche on Woody Ridge;
Human triggered avalanche near Bacon Rind;
Whumpfing and Cracking at Bacon Rind
Sunday 1/12/25 0.9/12" Bridger
0.7/9" Shower
0.2/4" Lone
 0.0/0" Carrot
0.0/0" Madison
0.1/1" Sawtelle
0.2/3" Fisher 		5-15 G20-35 NW
E @Bridger this morning 		4-6' deep persistent slab avalanche on Woody Ridge;
Small Soft Slab Avalanche near Mount Zimmer Yurt ;
Large Collapse at Lionhead

BBSP measured 11.5"/0.95" SWE at 4pm (24 hr total) top Bridger, then it snowed 5" overnight. Alpine and Brackett not showing as much.

Bavaria at Big Sky shows 12"+ since yesterday morning.
Saturday 1/11/25 0.1/3" Bridger
0.3/3" Shower
0.3/3" Timber
 0.2/2" Carrot
0.3/3" Lionhead
0.3/3" Wt Elephant
0.2/3" Fisher 		20-30 G40-60
10 G25 in Cooke 		NW-W Storm Slab Avalanche on Mt Blackmore;
Wind slab avalanche on Two Top

@0400
Friday 1/10/25 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-30 G40-45 Northern Ranges
10-15 G20 Southern Ranges & Cooke 		N-W Wind slabs on Mt Blackmore;
Hardscrabble Peak, natural avalanche
Thursday 1/9/25 0.3/5" Brackett
0.7/12" Shower
0.4/7" Timber
 0.3/5" Carrot
0.1/2" Madison
0.1/2" Wt Elephant
0.3/5" Fisher 		5-10 G20
24 G38 Cooke 		N
W Bridgers 		Natural storm slab avalanches Mt Blackmore;
4-6 foot deep Persistent slab on Mt. Abundance;
New Snow Avalanches North of Cooke City ;
4-6'+ deep Persistent slabs (2) on Henderson Mtn.;
Natural thick wind slab on Henderson Mtn.;
Small remote triggered pocket on Abundance

Snow #'s calculated using 6% density
Wednesday 1/8/25 0.0/0" Brackett
0.1/0" Shower
0.1/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-30 G40
Bridgers gusty below ridge 		W & NW Natural Avalanches above Texas Meadows;
Skier Triggered Wind Slab Northern Bridgers
Tuesday 1/7/25 0.1/1" Bridger
0.3/4" Shower
0.1/3" Timber
 0.1/1" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.1/1" Fisher 		0-10 G25
15 G35 Bridgers 		W-N Skier triggered avalanche north of Bridger boundary;
Emigrant Gulch natural avalanche ;
Persistent slab on Fisher Mtn.;
3-6' deep avalanches near Cooke

Unsure if Flanders wind is accurate - Rime?
Monday 1/6/25 0.7/7" Bridger
0.4/6" Lick Creek
0.4/7" Timber
 0.1/1" Carrot
0.1/1" Madison
0.3/3" Wt Elephant
0.0/0" Fisher 		5-10 G25
G35 Bridger Range 		W Skier triggered avalanche in Argentina Bowl;
Fresh avalanches in Cabin Ck

Wx @0600

Sawtelle Wind is Rimed again

Island Park Snow from Black Bear SNOTEL
Sunday 1/5/25 0.3/3" Brackett
0.7/7" Shower
0.4/5" Great Bear
 0.3/3" Carrot
0.2/2" Madison
0.2/2" Wt Elephant
0.4/4" Fisher 		5-25
G25-40 		NW
(SW this morning) 		Intentional Skier Triggered Avalanche near Hebgen;
Remotely Triggered Avalanche in Specimen Creek;
Natural Avalanche North Face Blackmore;
Avalanche Below Maid of the Mist;
Small avalanches along Carrot Basin Headwall in Taylor Fork;
Avalanches at Bacon Rind
Saturday 1/4/25 0.4/4" Brackett
0.3/3" Shower
0.4/5" Timber
 0.3/3" Carrot
0.2/2" Madison
0.3/3" Wt Elephant
0.5/5" Fisher 		5-15
G20-48 		SW-W Skier triggered large Wind Slab on the Ramp;
Remote Triggered Avalanche in Lionhead;
Avalanche Airplane Bowl Lionhead;
Natural Avalanche Argentina Bowl;
Wind Slab Avalanche Jefferson Bowl;
Large natural avalanche south of Cooke ;
More avalanches at Lionhead

@0400
Friday 1/3/25 0.6/4" Brackett
0.2/2" Shower
0.2/5" Great Bear
 0.4/3" Carrot
0.4/4" Madison
0.5/5" Sawtelle
0.9/8" Fisher 		10-20 G30-40 SW-W Small cut bank slide Teepee Creek Trail;
Hwy 191 Avalanche 3-Jan-25;
Natural Avalanche E Face of Sheep Mountain ;
Whumpfs and Shooting Cracks in the S Madisons;
Soft Slabs on Throne;
Snowmobile Triggered Avalanche at Buck Ridge;
Small Storm Snow Avalanches in Brackett Creek ;
Natural Avalanches on Cedar Mountain. NE and E aspects

@0400

AVALANCHE WARNING for Cooke City
Thursday 1/2/25 0.1/3" Brackett
0.1/2" Shower
0.3/4" Lone
 0.3/4" Carrot
0.4/5" Madison
0.4/5" Wt Elephant
0.3/4" Fisher 		10-15 G20
calm Bridgers 		mostly W Crown on Miller Ridge
Wednesday 1/1/25 0.1/2" Alpine
0.1/2" Shower
0.1/2" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-25 G40
5G10 Bridgers 		W and SW Large storm slab avalanches in North Bridgers;
Small, loose snow avalanches in Maid of the Mist ;
Recent human triggered slide Buck Ridge;
Storm slab Avalanches near Cooke
Tuesday 12/31/24 1.6/20" Bridger
0.4/8" Shower
0.2/4" Timber
 0.0/0" Carrot
0.0/0" Madison
0.1/1" Wt Elephant
0.0/0" Fisher 		5-15 G30 W-NW Small snowmobile triggered avalanche in Taylor Fork;
Sunset Peak natural - Cooke City

AVALANCHE WARNING in the Bridger Range

Snow in Centennials from Black Bear
Monday 12/30/24 1.2/7" Brackett
0.7/7" Shower
0.6/6" Great Bear
 1.0/7" Carrot
0.9/5" Madison
1.4/8" Sawtelle
1.4/11" Fisher 		15-30
G35-60
today -
10G20-30 		SW yesterday
W-NW today 		Avalanche in Beehive Basin ;
Sheep Creek ;
large natural avalanche, NE Mt. Henderson;
Avalanche on Bradleys Meadow Caught and Carried ;
Avalanche above Quake Lake;
Avalanches in Taylor Fork;
Storm slabs on the Ramp ;
Wind slabs in Flanders ;
Numerous dry loose and slab avalanches near the Throne;
Natural Avalanche on 1st Yellowmule

Sawtelle SWE/snow is from Black Bear SNOTEL. White Elephant had 0.8"/5"

AVALANCHE WARNING: Bridger Range
Sunday 12/29/24 0.1/1" Alpine
0.1/1" Shower
0.2/2" Timber
 0.4/4" Carrot
0.2/2" Madison
0.3/3" Wt Elephant
0.5/5" Fisher 		15-25
G20-51 		W-SW Remote trigger cabin creek;
collapses near Cooke;
Small avalanche in Buck
Saturday 12/28/24 0.1/1" Brackett
0.0/0" Shower
0.3/4" Timber
 0.3/3" Carrot
0.3/3" Madison
0.2/2" Wt Elephant
0.2/2" Fisher 		15-25 G45 W-S Partial Burial at Lionhead;
two avalanches at Lionhead
Friday 12/27/24 0.6/7" Brackett
0.3/3" Shower
0.4/7" Timber
 0.5/7" Carrot
0.5/4" Madison
0.6/5" Wt Elephant
0.4/6" Fisher 		15-25 G30-50 W Small Wind Slab Avalanche Saddle Peak

AVALANCHE WATCH for Island Park, Lionhead, S Madison, & S Gallatin
Thursday 12/26/24 0.0/0" Brackett
0.1/1" Shower
0.0/0" Lone
 0.1/1" Carrot
0.2/2" Madison
0.1/1" Wt Elephant
0.1/1" Fisher 		20-30
G45 		SW Cracking and Collapsing in Tele Meadows

AVALANCHE WATCH for Island Park, Lionhead, S Madison, & S Gallatin
Wednesday 12/25/24 0.0/0" Brackett
0.1/1" Shower
0.3/4" Lone
 0.2/2" Carrot
0.2/2" Madison
0.3/3" Wt Elephant
0.0/0" Fisher 		10-40 G60
 S/SW
Tuesday 12/24/24 0.1/1" Alpine
0.1/1" Shower
0.1/1" Lone
 0.0/0" Carrot
0.0/0" Madison
0.1/1" Sawtelle
0.1/1" Fisher 		10-20 G35
5 G15 in Cooke 		S-W
NW Cooke
Monday 12/23/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.2/2" Fisher 		10-25
G25-45 		W-SW
NW Cooke
Sunday 12/22/24 0.1/1" Alpine
0.2/2" Shower
0.2/2" Lone
 0.1/1" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.2/2" Fisher 		10-30
G40-55 		SW-W
Saturday 12/21/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-20 G25-40 SW-NW Snowmobiler triggered wind slab on Buck Ridge
Friday 12/20/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-25 G30-50
10 G20 in Cooke 		S-W-NW
Thursday 12/19/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.5/0" Fisher 		25-40
G80 		W E Face Mount Fox avalanche ;
Natural avalanche on Fan Mountain;
Cornice triggered avalanche in Hourglass chute

Snow was falling in Cooke yesterday, but with wind hard to measure how much

Sawtell rimed again
Wednesday 12/18/24 0.1/1" Brackett
0.2/2" Shower
0.1/1" Timber
 0.2/2" Carrot
0.1/1" Madison
0.1/2" Wt Elephant
0.2/2" Fisher 		15-35 G55
10 G25 Cooke 		SW-NW Small windslab along Beehive Ridge;
Wind Slabs near Cooke City;
Skier triggered wind slab in Frazier Basin;
Natural avalanche, Saddle Peak;
Wind slab avalanches in Naya Nuki Bowl ;
Natural Avalanche on Arden Peak;
Natural Avalanche Activity, Cooke City
Tuesday 12/17/24 0.6/5" Brackett
0.2/2" Shower
0.6/12" Timber
 0.7/7" Carrot
0.4/4" Madison
0.5/5" Wt Elephant
0.5/5" Fisher 		10-20 G40 NW-SW Wind/storm slab avalanche in the Bridger Range;
Remotely triggered slide near Buck Ridge;
Widespread weak layer Island Park;
Collapsing on West Henderson;
Terrain trap avalanche in Buck Ridge
Monday 12/16/24 1.0/8" Alpine
0.4/5" Shower
0.5/7" Timber
 0.2/2" Carrot
0.3/3" Madison
0.3/3" Sawtelle
0.4/5" Fisher 		10-20
G30-45
G54 Hyalite 		W-NW-SW 2 Storm Slabs near Buck Ridge;
Natural Avalanche on the Fin
Sunday 12/15/24 0.2/2" Alpine
0.0/0" Shower
0.2/3" Timber
 0.3/2" Carrot
0.5/4" Madison
0.7/6" Sawtelle
0.2/2" Fisher 		10-20
G30-45 		SW-W Windslab above surface hoar near W. Yellowstone/IP;
Shooting cracks in Middle Basin;
Small skier triggered wind slab in N Madisons;
Storm snow avalanche in Middle Basin ;
Large Whumph at Blackmore;
Slide South of Henderson Bench;
Skier triggered slide at The Throne;
New snow avalanche in Hyalite east fork ;
Many natural avalanches on Saddle Peak;
Skier caught and buried at Bridger;
Snowmobile triggered avalanche, Buck Ridge

@0600
Saturday 12/14/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.1/1" Fisher 		20-30 G35-50
10 G25 in Cooke 		S-W Wind Slab in Taylor Fork
Friday 12/13/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		10-20 G25-35
25 G50 in Hyalite 		S-W
Thursday 12/12/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15
G20-30 		W
some NW & SW

Trace of snow in a few places
Wednesday 12/11/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Lionhead
0.0/0" Wt Elephant
0.0/0" Fisher 		15-20
G 25-40 		W and NW
Tuesday 12/10/24 0.1/3" Bridger
0.1/2" Shower
0.1/1" Lone
 0.0/0" Carrot
0.1/1" Madison
0.1/1" Sawtelle
0.0/0" Fisher 		5-15 G35
20 G45 Bridger Range 		W-N
Monday 12/9/24 0.3/4" Bridger
0.8/10" Shower
0.2/4" Lobo
 0.0/0" Carrot
0.1/1" Madison
0.1/1" Sawtelle
0.1/1" Fisher 		5-15 G55 W-NW
Sunday 12/8/24 0.0/0" Brackett
0.0/0" Shower
0.2/1" Timber
 0.2/2" Carrot
0.0/0" Madison
0.1/1" Sawtelle
0.2/2" Fisher 		10-30
G40-60
G74 Big Sky 		SW-W-NW Avalanche Hayden Creek

@0600
Saturday 12/7/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		10-25
G25-47 		W-NW
Friday 12/6/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15 G15-30 NW-W

Temperature Inversion - Valley temps colder than mountains
Thursday 12/5/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher
Wednesday 12/4/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-15 mph
G 30 		NW and W
Tuesday 12/3/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		10-15
G20-35
25-30 @BigSky
 W
N-NW Cooke

Temps @0400:

  • 30-34 F at 8-10k', 20s F in valleys
  • 46 F at Bridger Base
  • mid-20s near Cooke
Monday 12/2/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15 G30 W-N Wet loose slides at Big Sky;
Wet Loose at Lulu Pass;
Small Wet Loose on Eglise Rock

Temps @ 0400

North: Upper 20s-31 F

South: Teens F
Sunday 12/1/24 0.1/1" Alpine
0.1/1" Shower
0.0/0" Lobo
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.1/1" Fisher 		15-20 G45 Northern Ranges
5-15 G30 Southern Ranges 		N-W Natural Wet Snow Avalanche, in Bridgers
Saturday 11/30/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-20 G25-40 NW-W Small Wind Slab Avalanches off Buck Ridge
Friday 11/29/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-20 G25-35
5 G15 in Cooke 		NW-W Wind slab avalanche near summit of Mt Blackmore ;
Skier Triggered Avalanche near Going Home Chute
Thursday 11/28/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15 G20-30 NW-W BSSP Triggered deep avalanche in Big Couloir;
Old wind slab Henderson
Wednesday 11/27/24 0.1/2" Brackett
0.2/2" Shower
0.3/6" Timber
 0.2/2" Carrot
0.1/1" Madison
0.1/1" Wt Elephant
0.2/2" Fisher 		5-15
G15-35 		W-NW
SW yesterday 		Loose Snow Avalanches Mt Blackmore
Tuesday 11/26/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.1/1" Fisher 		15-25 G45 SW-NW BSSP triggered avalanches on facets and wind slabs
Monday 11/25/24 0.1/2" Brackett
0.3/3" Shower
0.1/2" Lone
 0.1/1" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.3/3" Fisher 		5-10
G 15-20
Increase late Sun night
& Mon AM 		W Natural Avalanches on Saddle Peak;
Avalanches and cracking at Big Sky
Sunday 11/24/24 0.3/3" Bridger
0.5/5" Shower
0.5/5" Lone
 0.6/3" Carrot
0.6/3" Madison
0.8/4" Wt Elephant
0.6/5" Fisher 		10-30
G20-55 		W-SW
NW IP
Saturday 11/23/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-30
G35-55 		SW-W Cracking and wind slab formation at Bridger
Friday 11/22/24 0.1/1" Alpine
0.0/0" Shower
0.3/3" Lobo
 0.5/3" Carrot
0.1/1" Madison
0.2/2" Wt Elephant
0.3/2" Fisher 		25-35 G50-55
15 G30-40 Bridgers & Cooke 		SW-W Localized cracking and collapsing on Mt. Henderson
Thursday 11/21/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		30-40
G 50-60
except Bridgers and Cooke 		S/SW Thin windslabs in northern Bridgers;
Wet snow avalanches in Hyalite

Warming ahead of storm system
Wednesday 11/20/24 0.3/4" Brackett
0.1/1" Shower
0.1/1" Lobo
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.1/1" Fisher 		15-25 G45
except Bridgers and Cooke:
5-10 G30 		SW-NW
Tuesday 11/19/24 0.6/9" Bridger
0.5/7" Shower
0.5/9" Lone
 0.4/4" Carrot
0.4/4" Madison
0.5/4" Wt Elephant
0.3/3" Fisher 		5-15 G35 W-N
Monday 11/18/24 0.1/1" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.1/1" Madison
0.2/2" Wt Elephant
0.3/3" Fisher 		10-20
G35-55 		W-SW Shooting Cracks in Beehive Basin
Sunday 11/17/24 0.0/0" Brackett
0.1/1" Shower
0.1/1" Lone
 0.2/2" Carrot
0.1/1" Madison
0.2/2" Wt Elephant
0.1/3" Fisher 		20-30
G 35-50
less wind in Cooke 		W Wind Slab Avalanche - Northern Bridger Range
Saturday 11/16/24 0.5/4" Brackett
0.3/3" Shower
0.1/2" Lone
 0.3/3" Carrot
0.1/1" Madison
0.1/2" Wt Elephant
0.0/0" Fisher 		Before snow
30 G50 Bridgers
5-15/G20-30
After
7-20 G15-30

 Before snow
E-SE
After
E->N->W 		Small storm slabs Hidden Gully
Friday 11/15/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-20 G20-45 E-SE
Thursday 11/14/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-30
G45-65 		W-SW
Wednesday 11/13/24 0.1/1" Bridger
0.2/2" Shower
0.1/1" Lone
 0.3/3" Carrot
0.3/3" Madison
0.2/3" Wt Elephant
0.2/3" Fisher 		10-20
G20-35 		NW-SW
Tuesday 11/12/24 0.3/3" Brackett
0.2/2" Shower
0.1/1" Lone
 0.1/1" Carrot
0.0/0" Madison
0.1/0" Wt Elephant
0.0/0" Fisher 		5-20
G30-45 		W-SW

@0600
Monday 11/11/24 0.1/0" Brackett
0.0/0" Shower
0.1/1" Lone
 0.0/0" Carrot
0.1/0" Madison
0.0/0" Wt Elephant
0.2/2" Fisher 		10-20
G30-40 		W-SW

Rain up to 7500-8000'? last night.
Sunday 11/10/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		10-15
G25-37 		W
Saturday 11/9/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		5-15 G25 N-NW
Friday 11/8/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		5-15 G25
25-35 Bridgers 		N-NE
W Bridgers
Thursday 11/7/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		15-30 G40 W-N Natural Avalanche Bridger Bowl
Wednesday 11/6/24 1.0/15" Bridger
0.7/10" Shower
0.4/4" Lone
 0.1/1" Carrot
0.1/1" Madison
0.0/0" Wt Elephant
0.1/1" Fisher 		10-25 G45 W-N Skier-triggered avalanche in Super Couloir;
Small natural avalanches below ridge South of saddle peak;
Whumphing and cracks below the Apron;
Natural Avalanche near Fairy Lake
Tuesday 11/5/24 0.2/2" Alpine
0.2/2" Shower
0.3/4" Timber
 0.4/4" Carrot
0.3/4" Madison
0.4/4" Wt Elephant
0.2/2" Fisher 		10-25 G60 W-N
Monday 11/4/24 0.1/1" Alpine
0.1/1" Shower
0.0/0" Lone
 0.1/1" Carrot
0.2/4" Madison
0.0/0" Sawtelle
0.1/1" Fisher 		5-10 G25 W-NW Early season avalanche, outside advisory area
Sunday 11/3/24 0.5/6" Bridger
0.6/9" Shower
0.6/11" Lobo
 0.6/7" Carrot
0.8/5" Madison
0.7/6" Wt Elephant
0.3/3" Fisher 		10 G20
G40 Island Park 		SW-W-N
Saturday 11/2/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-20
G30-45 		S-W Climber triggered wind slabs at the Sphinx
Friday 11/1/24 0.3/3" Brackett
0.1/2" Shower
0.2/5" Timber
 0.3/5" Carrot
0.6/7" Madison
0.8/8" Sawtelle
0.4/7" Fisher 		5-15
G20-30 		SW-W
Thursday 10/31/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		10-25
G25-40 		SW-W
Wednesday 10/30/24 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.1/1" Fisher 		5-10
G10-25 		NW-SW-S
Tuesday 10/29/24 0.1/1" Brackett
0.6/6" Shower
0.2/2" Lone
 0.4/4" Carrot
0.3/3" Madison
0.5/5" Sawtelle
0.5/5" Fisher 		5-20
G20-35 		W-NW-N
Monday 10/28/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lobo
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		10-25 G55
G70 Lionhead 		W-SW

@0700
Sunday 10/27/24 0.0/0" Bridger
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		10-25 G55 W-SW
Saturday 10/26/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		10-30 G50 W-SW
Friday 10/25/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Sawtelle
0.0/0" Fisher 		5-15 G25
25 G50 Sawtelle 		W-SW
Thursday 10/24/24 0.2/1" Alpine
0.2/2" Shower
0.1/1" Lobo
 0.3/3" Carrot
0.2/2" Madison
0.3/4" Sawtelle
0.2/2" Fisher 		10-25 G55 SW-NW
Wednesday 10/23/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-20 G40 W-SW
Tuesday 10/22/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		10-30 G50 W-SW
Monday 10/21/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15 G35 NW-SW
Sunday 10/20/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-15 G35 W-SW
Saturday 10/19/24 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Wt Elephant
0.0/0" Fisher 		5-20 G35 NW-SW
Friday 10/18/24 0.3/3" Brackett
1.2/10" Shower
0.5/5" Bavaria
 0.9/8" Carrot
0.6/6" Madison
0.2/2" Wt Elephant
0.6/5" Fisher 		5-20 G20-40 NW-N-NE

Started as rain at lower elevations. SWE Totals @0600 since storm/precip began late 10/16- early 10/17.

Previous Years Weather and Avalanche Log

17-18 | 18-19 | 19-20 | 20-21 | 21-22 | 22-23 | 23-24