Weather and Avalanche Log

Precip and wind are taken between 4-6 a.m. and are for the previous 24 hours. Precipitation is recorded in SWE from SNOTEL and Ski Areas
SNOTEL Locations: Brackett - Bridgers; Shower - Hyalite; Lone - Big Sky; Carrot - S. Madison; Madison - W. Yellowstone; Fisher - Cooke
Ski Area SWE: Alpine - Bridger; Timber - YC

Date Map Thumb Northern Areas Southern Areas Wind Speed Wind Direction Avalanche Activity Notes
Monday 2/24/20 0.2/2" Brackett
0.3/3" Shower
0.2/3" Lone
0.0/0" Carrot
0.1/1" Madison
0.3/3" Fisher
15-25 G30-50 W-NW
Sunday 2/23/20 0.0/0" Bridger
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
5-25 G20-30 W-SW
NW Cooke
Saturday 2/22/20 0.0/0" Bridger
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G30-40 W-SW Snowmobile triggered on Scotch Bonnet, Cooke City;
Small natural wet loose and wind slab in S. Gallatins;
Natural avalanche on Sphinx
Friday 2/21/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G25-35 W-S Natural on Wolverine Peak Cooke City;
Snowmobile triggered small slope Lionhead
Thursday 2/20/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 W-S
N in Cooke
Skier triggered thin slab in Bridgers;
Skier triggered slab near Cooke
Wednesday 2/19/20 0.1/2" Brackett
0.1/1" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.1/2" Fisher
5-10 G20 W-N
Tuesday 2/18/20 0.3/9" Bridger
0.3/5" Shower
0.2/3" Lobo
0.2/3" Carrot
0.0/0" Madison
0.0/0" Fisher
5-10 G20 W-SW Snowmobiler triggered small avalanche near Goose Lake;
Natural Avalanches, Wilson Peak;
Naturals near Flathead Pass;
Natural Avalanche in Absarokas;
Natural avalanche Pine Creek;
Naturals in Storm Castle Creek
Monday 2/17/20 0.3/4" Brackett
0.2/2" Shower
0.1/2" Timber
0.2/3" Carrot
0.1/2" Madison
0.3/3" Fisher
15 G20-40 W-NW Sledder triggered on Buck Ridge
Sunday 2/16/20 0.2/4" Brackett
0.2/4" Shower
0.3/9" Timber
0.2/4" Carrot
0.3/4" Madison
0.3/4" Fisher
10-20 G 35 W-SW Natural avalanche on Chestnut Mountain, N. Gallatins;
Wolverine Bowl natural avalanche, Bridgers;
Shooting cracks on Mt Blackmore;
Natural Avalanche Mill Creek, Absarokas;
Collapsing/Whumphing at Bear Canyon;
Big Deep Slabs in Maid of the Mist, Hyalite;
Many large, destructive slides on Emigrant Peak
Saturday 2/15/20 0.6/6" Bridger
0.3/5" Shower
0.2/3" Timber
0.4/5" Carrot
0.0/0" Madison
0.4/7" Fisher
10-25 G30-40
G53 Hyalite
SW-W Collapsing and cracking in the southern Gallatins;
Snowbiker triggered slide in Taylor's Fork;
Many natural avalanches on Mt Blackmore;
Collapsing and Cracking on Black Mtn, N Madison;
Big natural avalanches on Flathead Pass
Date Map Thumb Northern Areas Southern Areas Wind Speed Wind Direction Avalanche Activity Notes
Monday 2/24/20 0.2/2" Brackett
0.3/3" Shower
0.2/3" Lone
0.0/0" Carrot
0.1/1" Madison
0.3/3" Fisher
15-25 G30-50 W-NW
Sunday 2/23/20 0.0/0" Bridger
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
5-25 G20-30 W-SW
NW Cooke
Saturday 2/22/20 0.0/0" Bridger
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G30-40 W-SW Snowmobile triggered on Scotch Bonnet, Cooke City;
Small natural wet loose and wind slab in S. Gallatins;
Natural avalanche on Sphinx
Friday 2/21/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G25-35 W-S Natural on Wolverine Peak Cooke City;
Snowmobile triggered small slope Lionhead
Thursday 2/20/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 W-S
N in Cooke
Skier triggered thin slab in Bridgers;
Skier triggered slab near Cooke
Wednesday 2/19/20 0.1/2" Brackett
0.1/1" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.1/2" Fisher
5-10 G20 W-N
Tuesday 2/18/20 0.3/9" Bridger
0.3/5" Shower
0.2/3" Lobo
0.2/3" Carrot
0.0/0" Madison
0.0/0" Fisher
5-10 G20 W-SW Snowmobiler triggered small avalanche near Goose Lake;
Natural Avalanches, Wilson Peak;
Naturals near Flathead Pass;
Natural Avalanche in Absarokas;
Natural avalanche Pine Creek;
Naturals in Storm Castle Creek
Monday 2/17/20 0.3/4" Brackett
0.2/2" Shower
0.1/2" Timber
0.2/3" Carrot
0.1/2" Madison
0.3/3" Fisher
15 G20-40 W-NW Sledder triggered on Buck Ridge
Sunday 2/16/20 0.2/4" Brackett
0.2/4" Shower
0.3/9" Timber
0.2/4" Carrot
0.3/4" Madison
0.3/4" Fisher
10-20 G 35 W-SW Natural avalanche on Chestnut Mountain, N. Gallatins;
Wolverine Bowl natural avalanche, Bridgers;
Shooting cracks on Mt Blackmore;
Natural Avalanche Mill Creek, Absarokas;
Collapsing/Whumphing at Bear Canyon;
Big Deep Slabs in Maid of the Mist, Hyalite;
Many large, destructive slides on Emigrant Peak
Saturday 2/15/20 0.6/6" Bridger
0.3/5" Shower
0.2/3" Timber
0.4/5" Carrot
0.0/0" Madison
0.4/7" Fisher
10-25 G30-40
G53 Hyalite
SW-W Collapsing and cracking in the southern Gallatins;
Snowbiker triggered slide in Taylor's Fork;
Many natural avalanches on Mt Blackmore;
Collapsing and Cracking on Black Mtn, N Madison;
Big natural avalanches on Flathead Pass
Friday 2/14/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Lionhead
0.0/0" Fisher
10-40
G55 Hyalite
G64 Big Sky
S-W Large natural avalanche in Divide Basin, Hyalite;
Large natural avalanche in Middle/Bear Basin;
Natural avalanche on Alex Lowe Peak;
Natural avalanche east of the top of Lick Creek;
2 slides in a week on Knowles Peak, Paradise Valley;
Large natural on E side Woody Ridge, Cooke;
Natural Avalanche up Moose Jaw, Storm Castle Ridge
Thursday 2/13/20 0.2/6" Bridger
0.1/2" Shower
0.1/2" Timber
0.1/2" Carrot
0.0/0" Madison
0.1/2" Fisher
10-20 W-NW Snowmobile Triggered Slide in McAtee Basin;
Cornice fall triggered soft slab slab in Spanish Peaks;
Two large slides on Wheeler Mtn
Wednesday 2/12/20 0.5/5" Brackett
0.5/5" Shower
0.3/5" Timber
0.3/4" Carrot
0.2/3" Madison
0.6/6" Fisher
10-25 W-N Remotely triggered avalanches on Garnet Mtn.
Tuesday 2/11/20 0.0/0" Bridger
0.1/1" Shower
0.1/1" Lobo
0.1/1" Carrot
0.1/1" Madison
0.1/1" Fisher
10-20 G30 W-S Collapsing and Cracking on Mt. Ellis;
Slides triggered in Deer Creek, N. Madison
Monday 2/10/20 0.6/11" Bridger
0.4/4" Shower
0.4/5" Lone
0.1/1" Carrot
0.0/0" Madison
0.3/3" Fisher
10-20 G30-40 W-NW
Sunday 2/9/20 0.5/6" Brackett
0.9/10" Shower
0.4/3" Lone
0.2/2" Carrot
0.0/0" Madison
0.3/2" Fisher
5-15 G30-40 NW-NE Truman Gulch Natural Deep Slabs;
Small natural and human triggered avalanches in Cooke;
Wind slab avalanche on Ross Peak, Bridgers;
Collapsing and cracking on Little Ellis;
Small avalanches in Tepee Basin, N. Madison;
Many naturals near Flathead Pass
Saturday 2/8/20 0.2/2" Bridger
0.2/2" Shower
0.2/2" Timber
0.2/2" Carrot
0.2/2" Madison
0.6/6" Fisher
10-30 G30-50 SW-W A child triggered a small avalanche;
Snowmobile Triggered Avalanches, McAtee Basin;
Snowmobiler triggered avalanches in Portal Ck, N. Gallatin;
Natural avalanche on Cedar Mountian;
Natural Avalanches West of Beehive Peak
Friday 2/7/20 1.3/14" Bridger
1.0/12" Shower
0.9/24" Bavaria
0.7/10" Carrot
0.9/11" Lionhead
0.4/4" Fisher
10-20 G35-40 NW-W Natural 3' storm slabs north of Bridger;
Natural Avalanche in Muddy Creek, Buck Ridge;
Natural avalanches on Wheeler Mtn, N. Gallatin;
Several avalanches on Elephant Mtn on way to Mt. Blackmore

@0600

AVALANCHE WARNING everywhere except Cooke

Thursday 2/6/20 1.5/15" Bridger
0.8/15" Shower
0.6/11" Timber
0.6/10" Carrot
0.6/13" Lionhead
0.4/6" Fisher
15-20 G40 W-NW Human triggered and natural on Buck Ridge;
Small Natural storm snow avalanches in Gallatin Canyon;
Skier triggered south face Texas meadow;
Widespread cracking and collapses on Little Ellis;
Natural avalanche near Ross Peak;
Natural Deep Slab Saddle Peak

@0600 and 6% density

AVALANCHE WARNING everywhere except Cooke

Wednesday 2/5/20 0.3/10" Bridger
0.2/2" Shower
0.3/8" Bavaria
0.2/2" Carrot
0.2/2" Madison
0.2/2" Fisher
10-20 G30-40 W Small avalanche triggered under Dribbles Ice Climb in Hyalite
Tuesday 2/4/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lobo
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
5-15 G25 E-NE-N-NW-W Natural Avalanche in Pinnacles, Bridger Range;
Collapsing, cracking and recent natural avalanche in northern Bridgers;
Small natural slide in Tepee Basin, S. Madison
Monday 2/3/20 1.3/14" Bridger
0.6/9" Shower
0.4/10" Timber
0.7/8" Carrot
0.8/9" Madison
0.4/7" Fisher
5-15 G20-30
25 G54 Bridger
E-NE-N Cooke City Deep Slab Natural;
Cooke City Wind Slab;
Natural Avalanche in Northern Madison Range;
Natural Avalanches on the west side of the Bridger Range;
Natural avalanche near Ross Peak, Bridgers
Sunday 2/2/20 0.0/0" Bridger
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-50
G155 Big Sky
G76 Hyalite
G52 Cooke
G64 T Fork
SW Small avalanche triggered in new snow by ice climber, Hyalite;
Natural avalanche in Great One, Bridger Range;
Reas Peak - Natural Avalanche
Saturday 2/1/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Lionhead
0.1/1" Fisher
15-35
G60 Hyalite
SW-W Natural avalanche on Cedar Mtn.;
Snowmobile triggered big slides on Skyline Ridge;
Snowmobile triggered wind slab Crown Butte;
Wind Slabs on Woody Ridge;
Town Hill Avalanche, Cooke City
Friday 1/31/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-30 G45 SW-NW
Thursday 1/30/20 0.2/2" Brackett
0.1/2" Shower
0.1/2" Timber
0.2/2" Carrot
0.1/1" Madison
0.1/1" Fisher
15 G20-35 W-SW Human triggered wind slab on Lulu;
Large Natural Avalanche on Fan Mtn.;
Thin natural wind slabs in Cooke City;
Natural avalanche in wind-loaded snow near Mt Bole, Hyalite
Wednesday 1/29/20 0.3/3" Brackett
0.1/1" Shower
0.2/4" Timber
0.2/3" Carrot
0.4/5" Madison
0.2/3" Fisher
5-15 G25 SW-N
Tuesday 1/28/20 0.0/0" Brackett
0.0/0" Shower
0.2/2" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
5-15 G30 W-S Small Wind Slab on Mt. Blackmore
Monday 1/27/20 1.2/7" Bridger
0.4/4" Shower
0.3/3" Timber
0.5/5" Carrot
0.4/4" Madison
0.3/3" Fisher
5-10 G15
G24 Bridgers
SW-NW Natural Avalanche on Naya Nuki

24 hr Storm total @0800

Sunday 1/26/20 0.0/0" Bridger
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.1/1" Madison
0.3/3" Fisher
5-20 G25-30 W-SW
Saturday 1/25/20 0.2/2" Brackett
0.1/1" Shower
0.1/1" Timber
0.2/2" Carrot
0.1/1" Madison
0.1/1" Fisher
10-20 G25-40 W
Friday 1/24/20 0.2/2" Brackett
0.2/2" Shower
0.1/1" Lobo
0.2/2" Carrot
0.1/1" Madison
0.2/2" Fisher
5-15 G30 S-W Explosive triggered Deep Slab Avalanche at Big Sky;
Natural on Alex Lowe peak
Thursday 1/23/20 0.0/0" Brackett
0.0/0" Shower
0.1/1" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-15 G25 W-SW Large Collapse near Ross Peak

Light freezing drizzle and rain at low elevations

Wednesday 1/22/20 0.2/2" Bridger
0.3/4" Shower
0.3/6" Timber
0.2/2" Carrot
0.2/2" Madison
0.2/2" Fisher
10-15 G35 W-SW
Tuesday 1/21/20 0.0/0" Bridger
0.0/0" Shower
0.1/1" Lobo
0.1/1" Carrot
0.1/1" Madison
0.2/2" Fisher
10-20 G30, G45 in Hyalite SW
Monday 1/20/20 0.0/0" Bridger
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Lionhead
0.0/0" Fisher
5-15 G20-25 SW-W
NW Cooke
Natural Avalanche Meridian Peak;
Natural Avalanche Wolverine Peak;
Snowmobile Triggered Avalanche Lionhead;
Snowmobile Triggered Avalanche McAtee Basin
Sunday 1/19/20 0.1/1" Brackett
0.1/1" Shower
0.1/3" Bavaria
0.1/3" Beaver
0.1/3" Lionhead
0.1/3" Fisher
5-15 G20-30 W-SW Natural cornice triggered Lionhead Ridge;
Skier triggered north of Bridger;
Collapsing at Taylor Fork;
Snowmobile triggered on Cedar;
Snowmobile triggered near Reas Peak;
Collapses and Whumphs west side Bridgers;
Natural Deep Slab Avalanche Hayden Headwall
Saturday 1/18/20 1.0/9" Bridger
0.3/6" Shower
0.4/9" Lookout
0.3/5" Carrot
0.3/6" Madison
0.1/2" Fisher
15-25 G 30-40 S-W Cornice triggered deep slab in Argentina Bowl;
Skier triggered Avalanche north of Divide Peak.;
Skiers triggered 2 large slides Flanders Mtn.;
Snowmobile triggered in Taylor Fork;
Skier triggered small slide Mount Wheeler;
Cracking/Collapsing on Bridger Ridge
Friday 1/17/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Lionhead
0.0/0" Fisher
10-25 G25-45
G60 Hyalite
SW-SE Large natural avalanche near Hardscrabble Peak;
Natural Avalanche on Lionhead Ridge
Thursday 1/16/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
20-30 G45, G65Hyalite S-SW Two big snowmobile triggered on Henderson Mtn., Cooke City;
Large natural avalanche in northern Bridgers;
Natural near Cooke;
Natural avalanche north of Lulu Pass, Cooke City
Wednesday 1/15/20 0.3/9" Bridger
0.2/4" Shower
0.1/2" Lobo
0.2/4" Carrot
0.2/4" Madison
0.4/6" Fisher
15-25 G40 W-SW Skier triggered avalanche near Saddle Peak;
A couple of thin, natural avalanches near Cooke City;
Bat Ears Couloir and Bear Basin avalanches;
Whumphing at Big Horn Peak, S. Gallatin Range
Tuesday 1/14/20 0.2/5" Bridger
0.0/0" Shower
0.0/0" Lobo
0.3/3" Carrot
0.4/4" Madison
0.4/4" Fisher
10-20 G35 SW Beehive East Ridge;
Large natural avalanche on Mt. Fox, Cooke City;
Snowmobile Triggered Avalanche in Taylor Fork
Monday 1/13/20 0.4/7" Brackett
0.1/1" Shower
0.3/4" Timber
0.7/7" Carrot
1.0/12" Madison
0.6/6" Fisher
15-30
G30-50
S-SW 18-24" Wind Slab North of Bridger Bowl;
Remote Trigger Meridian Peak

@0600

Sunday 1/12/20 0.1/1" Brackett
0.2/2" Shower
0.3/7" Timber
0.3/3" Carrot
0.3/3" Madison
0.3/4" Fisher
15-20 G25-35 W-SW
Saturday 1/11/20 0.2/2" Brackett
0.2/2" Shower
0.3/11" Timber
0.2/2" Carrot
0.2/2" Madison
0.1/1" Fisher
20-30 G30-50 S-W Natural Avalanches on Buck Ridge
Friday 1/10/20 0.5/7" Bridger
0.4/7" Shower
0.3/5" Bavaria
0.1/1" Carrot
0.1/2" Madison
0.2/2" Fisher
15-20 G30 W-NW Skier triggered slide on Saddle Pk;
Snowmobile Triggered Slide on Chimney Rock;
YC Patrol triggered avalanche to ground
Thursday 1/9/20 0.6/8" Bridger
0.1/1" Shower
0.4/6" Timber
0.3/3" Carrot
0.1/1" Madison
0.4/4" Fisher
10-15 G30 W-SW Avalanche on Hebgen Lake Road Cut;
Natural Avalanche near Buck Ridge;
Windslab in Middle Basin;
Avalanches in YNP
Wednesday 1/8/20 0.1/1" Brackett
0.0/0" Shower
0.0/0" Timber
0.1/1" Carrot
0.1/1" Madison
0.6/6" Fisher
15-20 G25-45 SW Skier triggered avalanche on Town Hill, Cooke City;
Natural Avalanche on Miller Ridge
Tuesday 1/7/20 0.1/1" Bridger
0.1/1" Shower
0.2/3" Timber
0.3/3" Carrot
0.5/8" Madison
0.9/10" Fisher
10-20 West Yellowstone/ Cooke
15-30 Big Sky - Bridgers
W-SW Skier triggered avalanche in N. Madison
Monday 1/6/20 0.0/0" Bridger
0.1/1" Shower
0.1/2" Lone
0.2/2" Carrot
0.2/2" Madison
0.2/2" Fisher
25-40
G40-55
W-SW
Sunday 1/5/20 0.1/1" Brackett
0.1/1" Shower
0.1/2" Timber
0.0/0" Carrot
0.0/0" Lionhead
0.2/2" Fisher
20-35
G40-65
SW-W
Middle Basin Cornice Fall
Saturday 1/4/20 0.0/0" Bridger
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.3/3" Fisher
20-30 G35-50
10 G20 Lionhead/Cooke
S-W Bridger patrol triggered deep slab;
Three snowmobilers caught in very large slide on Buck Ridge;
Small avalanches in Hyalite on Flanders and the Mummy;
Shooting cracks at Ross Peak, Bridgers;
Deep slab avalanches triggered by Big Sky patrol;
Cooke City lots of settling & cracking of the snow
Friday 1/3/20 0.0/0" Bridger
0.1/1" Shower
0.0/0" Lobo
0.1/1" Carrot
0.0/0" Madison
0.1/1" Fisher
10-20 G30-40
30 G40 Bridgers
SW-W Large Natural on Saddle Peak;
Natural slides and collapsing in Bridger Range;
Avalanche in Beehive;
Natural Avalanche on Yellow Mountain
Thursday 1/2/20 0.9/8" Brackett
0.7/6" Shower
0.9/13" Timber
0.4/5" Carrot
0.2/2" Madison
0.6/6" Fisher
20-30 G45 W
Wednesday 1/1/20 0.6/5" Brackett
0.3/4" Shower
0.3/3" Lone
0.6/6" Carrot
0.6/8" Madison
0.3/3" Fisher
20-25 G35; G60 Hyalite W-SW Small skier triggered avalanche near Mt Blackmore Trail, Hyalite;
Many small, natural avalanches outside Cooke City
Tuesday 12/31/19 0.0/0" Bridger
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G 25
15-35 Bridgers
NW-W-SW Skier remotely triggered a small wind slab up Hyalite;
Ice climber hit by loose snow avalanche on Killer Pillar, Hyalite
Monday 12/30/19 0.0/1" Bridger
0.0/0" Shower
0.0/2" Timber
0.0/0" Carrot
0.0/0" Lionhead
0.0/0" Fisher
0-15
G15-25
NW-NE
Sunday 12/29/19 0.0/4" Bridger
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Lionhead
0.0/0" Fisher
0-10
G15-20
NW-SW Remote triggered 6' deep in Tobacco Root Mtns

"Pixie dust" at Bridger yesterday a.m.

Saturday 12/28/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
5-10 G15-25 W-N
Friday 12/27/19 0.1/1" Bridger
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G30
5-10 Lionhead
S-W Two large, deep avalanches on Mt. Henderson near Cooke;
Snowmobiler triggered avalanche near Daisy Pass, Cooke City
Thursday 12/26/19 0.1/2" Bridger
0.1/1" Shower
0.1/2" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
5-10 SW-S-E Wind Slab avalanche near Cooke City
Wednesday 12/25/19 0.3/2" Brackett
0.2/2" Shower
0.4/4" Lone
0.7/7" Carrot
0.8/8" Madison
0.4/4" Fisher
10-20 G40 SW-W
Tuesday 12/24/19 0.0/0" Brackett
0.0/0" Shower
0.1/1" Lobo
0.0/0" Carrot
0.1/1" Madison
0.0/0" Fisher
10-20 G35 SW-SE Natural Avalanches near Lionhead;
Small Slide in 2nd Yellowmule
Monday 12/23/19 0.0/0" Bridger
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25 G30-50 S-SW
Sunday 12/22/19 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
25-40
G40-60
G83 Big Sky
G75 Hyalite
SW-S Large Collapse on hard wind slab in Hyalite
Saturday 12/21/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.3/3" Fisher
20-30 G35-50 S-W Large natural avalanche near Cooke City;
Snowmobile remote triggered 5' deep wind slab;
Human triggered hard wind slab near Fairy Lake
Friday 12/20/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.1/1" Madison
0.1/1" Fisher
15-30 G30-50 SW-W
Thursday 12/19/19 0.0/0" Bridger
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-20 G45 SW
Wednesday 12/18/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25 G35 S-W
Tuesday 12/17/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G25
30-35 G45 Bridgers
W Natural wide wind slab on Saddle Peak;
Bison triggered Avalanche in YNP?;
Shallow wind slab avalanches in Hyalite
Monday 12/16/19 0.1/3" Bridger
0.1/1" Shower
0.0/1" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25 G30-40 W
Sunday 12/15/19 0.3/4" Brackett
0.2/2" Shower
0.1/1" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G25 NW-SW Large avalanches in Taylor Fork
Saturday 12/14/19 0.0/0" Brackett
0.1/1" Shower
0.1/1" Lone
0.0/0" Carrot
0.1/1" Madison
0.0/0" Fisher
5-15 G10-20 W Slat Creek - 2nd Hand Report;
Three snowmobile triggered avalanches near Cooke City;
Snowmobile triggered/caught on Mt. Abundance near Cooke;
Natural in Republic Creek;
Natural avalanches near Silver Gate;
Small slide in Hyalite;
Mount Fox East Face;
The Fin Avalanche
Friday 12/13/19 0.3/3" Brackett
0.1/1" Shower
0.3/3" Timber
0.6/6" Carrot
0.4/4" Madison
0.5/5" Fisher
15-25 G45 W Remote triggered large avalanche near Cooke
Thursday 12/12/19 0.1/1" Brackett
0.1/2" Shower
0.1/2" Timber
0.3/3" Carrot
0.3/3" Madison
0.4/4" Fisher
15-20 G30-40 W-SW Collapsing in Cooke City;
Natural slides in Carrot Basin
Wednesday 12/11/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-20 G20-30 W-SW
Tuesday 12/10/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G20-30 W Whumphing and collapses at Bacon Rind
Monday 12/9/19 0.4/4" Brackett
0.5/6" Shower
0.5/4" Timber
0.4/4" Carrot
0.3/3" Madison
0.5/5" Fisher
20-25
G30-45
W-NW
Sunday 12/8/19 0.1/1" Brackett
0.1/1" Shower
0.3/3" Timber
0.4/4" Carrot
0.6/6" Madison
0.9/9" Fisher
15-25 G40-50 SW Natural and human triggered slides in Cooke City;
Many natural avalanches on Buck Ridge;
Widespread cracking at Lionhead

@0500

Saturday 12/7/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Lionhead
0.0/0" Fisher
20-30 G25-50 S-W
Friday 12/6/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lobo
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
5-15 G10-25 S-W
Thursday 12/5/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
5-15 W
Wednesday 12/4/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G40 W-SW Collapses in s. Gallatin
Tuesday 12/3/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.2/2" Carrot
0.1/1" Madison
0.2/2" Fisher
15-30 G40 W Bridger patrol triggered large slides on heavily wind loaded slopes
Monday 12/2/19 0.1/2" Bridger
0.1/1" Shower
0.2/2" Timber
0.4/4" Carrot
0.2/2" Madison
0.3/3" Fisher
15-25 G45 W-SW
Sunday 12/1/19 0.1/1" Brackett
0.0/0" Shower
0.1/1" Timber
0.1/1" Carrot
0.1/1" Madison
0.1/1" Fisher
10-20 G30 WSW Small intentionally triggered wind slab in Beehive Basin;
Natural and human triggered wind slabs in the Bridger Range;
Natural slide on Mineral Mountain;
Natural and human triggered wind slab avalanches in Hyalite
Saturday 11/30/19 0.4/5" Alpine
0.2/5" Shower
0.2/3" Timber
0.3/3" Carrot
0.6/7" Madison
0.4/4" Fisher
5-15
20-40 Bridger
NE-E
ESE-Bridger
Widespread Collapsing at Lionhead;
Skier triggered dry loose at Beehive;
Skier triggered loose snow and natural wind slabs at Bridger
Friday 11/29/19 0.1/2" Brackett
0.1/1" Shower
0.0/1" Lone
0.3/4" Carrot
0.3/4" Madison
0.3/3" Fisher
10-20 SE-NE; N Bridger
Thursday 11/28/19 0.2/1" Brackett
0.1/1" Shower
0.1/2" Lone
0.4/5" Carrot
0.2/2" Madison
0.1/1" Fisher
10-20 G35 E-SE
Wednesday 11/27/19 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
0.2/2" Carrot
0.0/0" Madison
0.0/0" Fisher
5-15 G30-40 S-ESE
Tuesday 11/26/19 0.2/3" Bridger
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
5-15 E-NE Bridger, Cooke;
W-NW Hyalite, Big Sky
Monday 11/25/19 0.0/0" Alpine
0.0/0" Shower
0.1/2" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
25-40 G65 W-NW
Sunday 11/24/19 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
20-30 G50
10-20-Cooke
W-SW
WNW-Cooke
Saturday 11/23/19 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25 G38 W
NW-Cooke
Shooting cracks in windslabs, Hyalite
Friday 11/22/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 W-N Large avalanches in Absaroka - Outside Advisory area
Thursday 11/21/19 0.0/0" Bridger
0.0/0" Shower
0.1/1" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
0-10 G15 NE
Wednesday 11/20/19 0.6/5" Bridger
0.6/4" Shower
0.3/4" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-15 W-NW Small new snow avalanches at Bridger

@500

Tuesday 11/19/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G35 SW
Monday 11/18/19 0.3/0" Brackett
0.3/0" Shower
0.3/1" Timber
0.2/2" Carrot
0.1/1" Madison
0.4/4" Fisher
15-30 W-SW

Rain to ~9,000 feet in northern ranges.

Sunday 11/17/19 0.0/0" Brackett
0.0/0" Shower
0.1/1" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25
G48-Bridger
W
NW-Cooke
Saturday 11/16/19 0.0/0" Brackett
0.5/4" Shower
0.4/3" Timber
0.1/1" Carrot
0.0/0" Madison
0.1/1" Fisher
10-20 G40 W-SW Rivers of loose snow avalanches in Flanders Drainage
Friday 11/15/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15 G25 W
Thursday 11/14/19 0.0/0" Bridger
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G30 W-SW
NW Cooke City
Small wet avalanche in Beehive
Wednesday 11/13/19 0.2/2" Brackett
0.3/5" Shower
0.0/0" Timber
0.1/1" Carrot
0.0/0" Madison
0.2/2" Fisher
20-30 G 35 W
Tuesday 11/12/19 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
0.2/2" Carrot
0.1/1" Madison
0.2/2" Fisher
15-20 G25-35 W-SW Ice climber triggered and caught in avalanche in Upper Mill Creek, Absarokas
Monday 11/11/19 0.3/4" Alpine
0.3/3" Shower
0.2/2" Lone
0.0/0" Carrot
0.0/0" Madison
0.2/2" Fisher
10-16 G20 W-NW Cracking Wind Slabs at Bridger
Sunday 11/10/19 0.1/0" Brackett
0.1/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G40 W Wind Slab avalanche on Mt. Blackmore

Rain to 8-8,500' this morning

Saturday 11/9/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
20-25 G40 W-SW
Friday 11/8/19 0.0/0" Bridger
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G35 W-SW
NW Cooke City
Thursday 11/7/19 0.1/1" Bridger
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-15 G30 SW-W
N Cooke City
Wednesday 11/6/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G20-40 W-NW
NE Bridgers
Tuesday 11/5/19 0.4/3" Brackett
0.3/2" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.2/2" Fisher
15-25 G30-40 W Wet loose at Bridger
Monday 11/4/19 0.0/0" Alpine
0.3/3" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.2/2" Fisher
10-15
G25-35
W-SW
NW Cooke
Sunday 11/3/19 0.0/0" Brackett
0.1/1" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25 G35
G51 Hyalite
W
N Cooke
Saturday 11/2/19 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25 G30
G44 Bridger
W
NW Cooke
Collapsing of a wind slab in Hyalite;
Skier triggered small wind slabs in Beehive;
Cornice triggered slab in Hyalite
Friday 11/1/19 0.3/5" Bridger
0.4/5" Shower
0.2/4" Lobo
0.2/3" Carrot
0.1/1" Madison
0.1/1" Fisher
10-20 G35 W-NW Natural wind slabs and dry loose avalanches Mt. Blackmore
Thursday 10/31/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
20-30 G45 W
Wednesday 10/30/19 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
20-35 in N
10-15 in S
W Shooting Cracks at Bridger Bowl;
Small wind slab triggered in Hyalite;
Natural avalanches north of Bridger

@0600; Lows 0F to -4F

Tuesday 10/29/19 0.5/14" Alpine
0.2/2" Shower
0.2/3" Timber
0.4/4" Carrot
0.3/3" Madison
0.2/2" Fisher
5-15 G35 N-NE Several small skier triggered/natural slides at Bridger;
Natural avalanches in Hyalite

BBSP Measured 14" at Alpine

Flanders Temp -20 F

Monday 10/28/19 0.1/1" Bridger
0.0/0" Shower
0.1/1" Lobo
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-15 G35 W-NW Natural and skier triggered new snow/wind slabs at Bridger

@0600

Sunday 10/27/19 0.3/5" Brackett
0.5/8" Shower
0.3/5" Lobo
0.3/3" Carrot
0.2/3" Madison
0.4/5" Fisher
5-10 G15-20 NW-N

@0500

Saturday 10/26/19 0.2/2" Brackett
0.1/1" Shower
0.1/1" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-15 G30-40 NW-N
SW in Cooke
Small avalanches at Bridger

@0700

Friday 10/25/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25 G30-40 W-SW
NW Cooke
Avalanches in Taylor Fork;
Small Wind Slabs on Mt Blackmore

@0500

Thursday 10/24/19 0.2/2" Bridger
0.2/3" Shower
0.1/1" Timber
0.2/2" Carrot
0.0/0" Madison
0.2/2" Fisher
5-10 G20 NW-SW

@0700

Wednesday 10/23/19 0.5/1" Brackett
0.6/3" Shower
0.2/2" Timber
0.2/2" Carrot
0.2/1" Madison
0.6/6" Fisher
20-30 G70 W

@0700

Tuesday 10/22/19 0.0/0" Alpine
0.1/1" Shower
0.1/1" Timber
0.3/3" Carrot
0.1/1" Madison
0.2/3" Fisher
10-20 G40 W Cornice Collapse-Saddle Peak

@0700

Monday 10/21/19 0.2/3" Brackett
0.4/4" Shower
0.2/2" Lone
0.1/1" Carrot
0.1/1" Madison
0.2/2" Fisher
10-15 G20-30 W
Sunday 10/20/19 1.2/14" Bridger
1.0/11" Shower
0.4/8" Timber
0.5/5" Carrot
0.7/6" Madison
0.6/7" Fisher
15-20 G30 W-NW Small avalanche in Hyalite

@0700

Saturday 10/19/19 0.0/0" Alpine
0.0/0" Shower
0.1/1" Timber
0.1/1" Carrot
0.1/1" Madison
0.0/0" Fisher
15-25 G45 W-SW

@0700

Friday 10/18/19 0.2/2" Alpine
0.2/2" Shower
0.1/2" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25 G35 W-SW

@0700

Thursday 10/17/19 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25 G40 W-SW

Issued Early Season Bulletin

Wednesday 10/16/19 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-30 W
Tuesday 10/15/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-25 W-SW
Monday 10/14/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-25 G40 WSW
Sunday 10/13/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
5-20 W-SW
Saturday 10/12/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-25
G30 Bridger
WSW
NW Cooke
Friday 10/11/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20
G30 Bridger
W-SW
Thursday 10/10/19 0.7/14" Brackett
0.2/2" Shower
0.2/2" Lone
0.4/9" Carrot
0.3/5" Madison
0.1/1" Fisher
5-15 N-NE

Issued Early Season Bulletin

Wednesday 10/9/19 0.2/5" Alpine
0.1/2" Shower
0.1/2" Timber
0.3/3" Carrot
0.4/5" Madison
0.2/2" Fisher
5-20
G30 Bridger
NE Wind slab and dry loose in Hyalite
Tuesday 10/8/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25 G30-40 W-SW
Monday 10/7/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G25-30 W-SW
Sunday 10/6/19 0.3/3" Alpine
0.1/1" Shower
0.1/1" Lone
0.2/2" Carrot
0.1/1" Madison
0.2/2" Fisher
15-25 G30-40 W-SW
NW (Cooke)
Saturday 10/5/19 0.1/1" Brackett
0.8/8" Shower
0.9/10" Lone
0.2/2" Carrot
0.2/2" Madison
0.4/4" Fisher
15-20 G35 WSW
NW (Cooke)
Whumph on The Sphinx
Friday 10/4/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-25 WSW
Thursday 10/3/19 0.0/0" Brackett
0.1/1" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 G30 SW

Issued Early Season Bulletin

Wednesday 10/2/19 0.0/0" Brackett
0.1/1" Shower
0.2/3" Lone
0.1/1" Carrot
0.2/2" Madison
0.4/4" Fisher
5-15 SE-SW
Tuesday 10/1/19 0.1/2" Alpine
0.1/1" Shower
0.2/2" Lone
0.2/2" Carrot
0.2/2" Madison
0.2/2" Fisher
5-15 SW-SE
Monday 9/30/19 0.1/1" Brackett
0.3/3" Shower
0.1/1" Lone
0.3/3" Carrot
0.3/3" Madison
0.2/2" Fisher
10-20 WSW
Sunday 9/29/19 0.3/3" Brackett
0.1/2" Shower
0.1/1" Lone
0.2/2" Carrot
0.3/1" Madison
0.6/6" Fisher
5-15 E-SE Small wind slab near Fairy Lake
Saturday 9/28/19 0.2/1" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.1/1" Fisher
5-25 NE-SE
Friday 9/27/19 0.2/0" Brackett
0.1/1" Shower
0.4/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.3/0" Fisher
5-15 W

Precip: Rain/snow mix

Thursday 9/26/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-30
G50 Hyalite
WSW

Issued Bulletin

Wednesday 9/25/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-35
(Cooke)
WNW
Tuesday 9/24/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
15-30 (Cooke) SW
Monday 9/23/19 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher
10-20 (Cooke) W-SW Wet Slides across Pine Creek trail
Sunday 9/22/19 0.1/1" Brackett
0.2/2" Shower
0.2/1" Lone
0.1/1" Carrot
0.0/0" Madison
0.2/2" Fisher
5-20 (Cooke) W
Saturday 9/21/19 0.1/1" Brackett
1.3/9" Shower
0.4/2" Lone
0.5/5" Carrot
0.3/2" Madison
0.7/5" Fisher
5-10 (Cooke) NW

FIRST SNOW in the mountains