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
Wednesday 1/27/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.1/1" Madison
0.0/0" Fisher 		10-25 G30
G50 Hyalite 		SW
Tuesday 1/26/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		5-15 G15
G40 Bridger Range 		E-SW

East winds are shifting back to the southwest
Monday 1/25/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.1/1" Madison
0.0/0" Fisher 		5-10 G15 SW-SE
Sunday 1/24/21 0.0/0" Bridger
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		5-20 G15-25 W-SW Snowmobile Triggered Avalanche, Sunlight Basin
Saturday 1/23/21 0.0/0" Brackett
0.0/0" Shower
0.0/1" Lookout
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		5-15 G18 W-NW-NE Snowmobiler caught and uninjured in avalanche, Cooke City;
Loose Dry Avalanches on the Throne
Friday 1/22/21 0.2/2" Brackett
0.1/1" Lick Creek
0.1/1" Lone
 0.1/2" Carrot
0.2/2" Madison
0.2/3" Fisher 		5-15 SW (NW in Cooke) Snowmobile triggered on Sheep Mtn, Cooke;
Natural Avalanche Ernie Miller Ridge
Thursday 1/21/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Lionhead
0.0/0" Fisher 		10-20 G30 SW-NW
Wednesday 1/20/21 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-25 G50
G60 Bridger 		SW-NW Natural avalanches near Maid of the Mist;
Natural avalanches near Lionhead Ridge
Tuesday 1/19/21 0.3/3" Bridger
0.2/3" Shower
0.2/2" Lobo
 0.1/1" Carrot
0.1/1" Madison
0.2/3" Fisher 		5-15 G30
G40 Cooke 		W-NE Loose Snow and Slab Avalanche, Mt Blackmore;
Skier and Snowmobile Triggered Avalanches, Cooke City;
Snowmobile Triggered Avalanche, Sheep Creek;
Cracking and Collapsing, Cooke City;
Snowmobiler triggered avalanche in Tepee Basin
Monday 1/18/21 0.3/1" Brackett
0.5/5" Shower
0.1/1" Lone
 0.1/1" Carrot
0.1/2" Madison
0.4/4" Fisher 		15-25
G25-60 		NW Snowmobile Triggered Avalanche, Second Yellowmule

@0400
Sunday 1/17/21 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-20
G30-40 		W-NW
Saturday 1/16/21 0.5/4" Alpine
0.3/3" Shower
0.2/2" Lone
 0.2/2" Carrot
0.2/2" Madison
0.1/1" Fisher 		10-15
G25-30 		NW-W Ski cut small slide on surface hoar;
Shooting cracks near Cooke City
Friday 1/15/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		20-25 G35 (50 Bridger) W-NW Collapse/Crack on Scotch Bonnet
Thursday 1/14/21 0.2/2" Brackett
0.2/2" Shower
0.2/2" Timber
 0.3/3" Carrot
0.4/4" Lionhead
0.9/10" Fisher 		15-20 G40-50 W
Wednesday 1/13/21 0.1/1" Brackett
0.1/1" Shower
0.2/3" Timber
 0.4/5" Carrot
0.3/3" Madison
0.3/3" Fisher 		25-30 G50
5-10 G25 West and Cooke 		SW Lionhead Ridge natural avalanche;
Near Mt. Wilson -- shooting cracks, whumpfing;
Natural avalanches on West side of Bridgers;
Collapsing, cacking, whumpfs in S. Gallatin;
Natural avalanche south of Cooke;
Small, natural avalanches outside Cooke City;
Natural Avalanche in the S. Gallatin Range;
Natural Avalanches, Taylor Fork

W-NW wind hitting ~80+ mph across forecast area.

Buried a surface hoar layer.
Tuesday 1/12/21 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 G40
5 G15 West and Cooke 		SW-NW
Monday 1/11/21 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 G25-30 NW-SW Football Field Avalanche
Sunday 1/10/21 0.0/0" Bridger
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-15 G15-25 W-SW Widespread Collapsing on Ernest Miller Ridge;
Whumphing and old avalanche at Bacon Rind;
Couple large collapses in Hyalite Creek
Saturday 1/9/21 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		5-15
G20 Bridgers 		NE-N
W in Bridgers 		Skier triggered large slide on Flanders Mountain;
Collapses and Whumph in N. Madison;
Cracking and Collapsing at Hebgen Lake;
Avalanche in Goose Crk near Cooke;
Sledder triggered slide and 2 naturals in Centennials;
collapse at Blackmore;
Natural avalanche and wide cracks at Buck Ridge;
Skiers triggered small slab on lower Republic Mountain;
Skier triggered slide north of Cooke;
Small natural south of Cooke;
Many snowmobile triggered slides at Lionhead
Friday 1/8/21 0.6/7" Bridger
0.3/3" Shower
0.2/4" Timber
 0.1/1" Carrot
0.1/1" Madison
0.1/1" Fisher 		5-15
G25 Bridgers 		W-NW Skier triggered, caught and injured on The Fin;
Many whumpfs/Collapses in N. Madison;
Remote triggered slide Cinnamon Creek;
Skier Triggered Avalanche near Meridian Peak;
Remotely triggered cracking in Bridgers
Thursday 1/7/21 0.1/1" Bridger
0.0/0" Shower
0.1/2" Timber
 0.1/1" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-20 G30 SW Natural avalanche near Fairy Lake;
Snowmobile triggered slides (2) on Buck Ridge;
Rider triggered large, wide slide on Buck Ridge;
Small Natural Avalanche NW of Cooke
Wednesday 1/6/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.1/1" Madison
0.1/1" Fisher 		15-20 G35 W-SW Intentional cornice drop triggered a soft slab, Republic Mtn;
Cracking and small natural slides in S. Gallatin;
Skier triggered avalanche in Bradley's Meadow;
Skier remotely triggered avalanche in N. Madisons;
Cracking and collapsing around Lionhead;
Whumphing and cracking, West side Bridger;
Remotely triggered avalanche on Bald Mountain, Jardine, MT;
Many natural avalanches north of Cooke City;
Snowmobiler triggered avalanche on Buck Ridge;
Many (6) natural avalanches near Buck Ridge
Tuesday 1/5/21 0.8/9" Brackett
0.4/4" Shower
0.6/9" Timber
 0.7/8" Carrot
0.7/8" Madison
0.6/6" Fisher 		15-30 G50 W-S Natural Avalanches on Fan Mountain;
Natural avalanche on Saddle Peak;
Avalanches triggered by groomer near Jardine;
Natural avalanches along Lionhead Ridge;
Natural Avalanche in Argentina Bowl;
Collapse and crack in Lick Creek;
Skier triggered avalanche on Henderson Mtn;
Scotch Bonnet and Sheep Basin/Wolverine Peak natural avalanches;
Collapses, cracking and a natural avalanche on Mineral Mountain;
Yellowstone National park (Chrystal Creek); cornice collapse and whumpfs;
Human triggered avalanche in AB wilderness near Paradise Valley;
Many natural avalanches seen in backcountry around Big Sky;
Small natural avalanche on Buck Ridge;
Small natural avalanches along Gallatin River;
Upper Sage Creek Ridgeline;
Natural avalanches on Middle Basin Peak

AVALANCHE WARNING for Bridgers, S. Gallatin, S. Madison, Lionhead and Centennials.
Monday 1/4/21 0.1/1" Alpine
0.1/2" Shower
0.2/4" Timber
 0.2/2" Carrot
0.3/3" Madison
0.3/3" Fisher 		15-35
G30-40 		W-SW Cornice triggered avalanche in Divide Basin, Hyalite
Sunday 1/3/21 0.2/2" Alpine
0.0/0" Shower
0.1/1" Lone
 0.3/3" Carrot
0.2/2" Madison
0.2/3" Fisher 		15-25
G30-50 		SSW-W Natural cornice fall, collapses, Mt Blackmore ;
Ice Climber triggered avalanche in Avalanche Gulch, Hyalite;
Propagating cracks on wind drifts in Fisher Creek;
Widespread whumpfing/collapsing and cracking above Hebgen Lake;
Lots of collapsing and cracking at Bacon Rind
Saturday 1/2/21 0.1/1" Brackett
0.1/1" Shower
0.2/2" Timber
 0.2/2" Carrot
0.1/1" Madison
0.1/1" Fisher 		10-20 G20-25 S-W Skier remote triggered in YNP near Cooke;
Large Collapses in YNP, S. Gallatin;
Widespread whumphing near Hebgen Lake;
Skier triggered 2 wind slabs on Abiathar;
large collapse on Flanders Peak
Friday 1/1/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.1/1" Carrot
0.1/3" Madison
0.0/0" Fisher 		10-15
G15-25
25 G40 in Bridgers 		SW-NW Skier triggered large slide on Saddle Peak;
Shooting Crack and Whumpfs in Bear Basin
Thursday 12/31/20 0.6/5" Brackett
0.3/3" Shower
0.2/2" Timber
 0.2/2" Carrot
0.2/2" Madison
0.1/1" Fisher 		15-20 G35 W-SW
Wednesday 12/30/20 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 Crown Butte, Snowmobile triggered Avalanche
Tuesday 12/29/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lobo
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-15 G25 W-NW
Monday 12/28/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lobo
 0.0/0" Carrot
0.0/0" Lionhead
0.0/0" Fisher 		5-15 G 25 W-N Skier Triggered Avalanche Mount Blackmore - East Face;
Loose Snow Avalanche - Flanders;
Numerous Whumphs in the Taylor Fork;
Monster Whumphs at Bacon Rind
Sunday 12/27/20 0.5/7" Alpine
0.5/6" Shower
0.5/8" Timber
 0.4/4" Carrot
0.3/3" Madison
0.3/5" Fisher 		5-15 G25 W-NW Collapse near Cooke below ice climb;
Whumphs in Beehive;
Three sledder triggered slides off Buck Ridge
Saturday 12/26/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-20
G35-50 		SW Specimen Creek Natural Avalanche
Friday 12/25/20 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
G20-40 		S-W Skier Triggered Avalanche - Football Field;
Small natural activity in Beehive;
Large collapse at Maid of the Mist
Thursday 12/24/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		20-40
 W-N Natural avalanches on Bridger Pk;
Collapses near Cooke City;
Naturals in YNP
Wednesday 12/23/20 0.5/6" Brackett
0.7/7" Shower
0.4/5" Timber
 0.2/2" Carrot
0.1/1" Madison
0.4/4" Fisher 		10-30 W-N Numerous wind slab avalanches around Cooke City
Tuesday 12/22/20 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.1/1" Carrot
0.2/2" Madison
1.0/10" Fisher 		15-30 G70 S-W Natural Avalanches Barronette Peak;
Natural Avalanche Mineral Mountain;
Natural Avalanche Mt. Republic;
Skier triggered avalanche NE of Cooke City;
Natural and Skier triggered slide, YNP;
Natural Avalanche Divide Cirque
Monday 12/21/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lobo
 0.1/1" Carrot
0.3/3" Madison
0.4/6" Fisher 		15-30 G75 (Flanders) W-SW Colter Pass Natural Avalanche
Sunday 12/20/20 0.0/0" Brackett
0.0/0" Shower
0.1/1" Timber
 0.2/2" Carrot
0.2/2" Madison
0.3/4" Fisher 		20-35 G40-70 W-SW Skier triggered large cornice, Beehive;
West facing slope, Hyalite canyon ;
Astral Lake, Natural Avalanche;
Two skier triggered slides at Lionhead;
Natural Wind Slab - Overlook Mountain
Saturday 12/19/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-25 G25-50
Stronger in N 		SW-W Small natural on Hyalite Peak ;
Small crowns on Barronette;
Natural Avalanche, Sunlight Basin;
Natural Wind Slab Elephant Mountain
Friday 12/18/20 0.2/2" Brackett
0.2/2" Shower
0.5/7" Timber
 0.5/5" Carrot
0.3/3" Madison
0.3/3" Fisher 		15-20 G30-40 W-NW Small road cut slides near West Yellowstone;
Snowplow triggered cut bank slide near Big Sky
Thursday 12/17/20 0.1/1" Brackett
0.0/0" Shower
0.1/1" Lone
 0.3/3" Carrot
0.2/2" Madison
0.3/4" Fisher 		20-35 G65@Hyalite W-SW Shooting cracks at Telemark Meadows;
Snowmachine triggered wind slabs near Cooke
Wednesday 12/16/20 0.1/2" Brackett
0.2/3" Shower
0.1/2" Lone
 0.3/5" Carrot
0.4/6" Madison
0.2/4" Fisher 		15-30 G55
1-10 G25 Cooke 		W-SW Small natural avalanche at Bighorn/Fawn Pass loop;
Small, intentionally triggered slide;
Avalanches west of Cooke
Tuesday 12/15/20 0.0/0" Brackett
0.2/3" Shower
0.1/2" Lobo
 0.1/2" Carrot
0.1/2" Madison
0.0/0" Fisher 		5-15 G 20-40 SW-NW
Monday 12/14/20 0.1/1" Alpine
0.1/1" Shower
0.2/3" Lone
 0.1/1" Carrot
0.2/2" Madison
0.1/1" Fisher 		5-15 G15-30 W-SW
Sunday 12/13/20 0.1/3" Brackett
0.0/0" Shower
0.0/1" Lone
 0.0/0" Carrot
0.0/0" Madison
0.1/1" Fisher 		5-15 G25-30 W-SW Natural Loose Snow Avalanche - Divide Cirque;
Natural Loose Snow Avalanches - Beehive Basin
Saturday 12/12/20 0.2/3" Bridger
0.1/4" Shower
0.1/2" Timber
 0.1/2" Carrot
0.1/4" Lionhead
0.1/2" Fisher 		5-10 G10-20 SW-NW Cracking drift in Bridgers;
Small dry loose Bridgers, Beehive, Cooke City
Friday 12/11/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/1" Fisher 		5-10 G20
20 G30 in Bridger 		S-NE
Thursday 12/10/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Lionhead
0.0/0" Fisher 		5-10 W-NW Full depth facet sluffs in S. Madison
Wednesday 12/9/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Lionhead
0.0/0" Fisher 		15-30 G45 W-SW
Tuesday 12/8/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		5-15 G20-40 W-SW
NW-Cooke
Monday 12/7/20 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 G25-40 SW-W-NW
Sunday 12/6/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-20 G30 W-SW
Saturday 12/5/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-15 G25 W-SW-S-E-NE-N-NW
Friday 12/4/20 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		5-15 G25
20-30 G40 Bridgers 		W-N
Thursday 12/3/20 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.1/1" Fisher 		10-20 G15-25 W
N Cooke City 		Natural wind slab at Bridger;
Small wind slabs near Cooke
Wednesday 12/2/20 0.0/0" Brackett
0.1/1" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.1/1" Fisher 		5-15 G20-30 NE-E
W in Bridgers 		Skier triggered avalanche at Bridger Bowl
Tuesday 12/1/20 0.4/6" Bridger
0.2/3" Shower
0.2/2" Lone
 0.2/2" Carrot
0.2/2" Madison
0.2/2" Fisher 		15-20 G40-50 W Small Avalanches in Bridger Range
Monday 11/30/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-25 G30-50 SW-W Facet sluffing in Beehive/Middle Basins
Sunday 11/29/20 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 G29 SW-NW
Saturday 11/28/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		5-15 G30 W-SW Natural slab avalanche near Cooke
Friday 11/27/20 0.1/0" Brackett
0.0/0" Shower
0.1/0" Lone
 0.1/0" Carrot
0.0/0" Madison
0.1/1" Fisher 		15-25 G25-30
G50 Bridger 		W-SW
Thursday 11/26/20 0.4/4" Brackett
0.2/3" Shower
0.3/7" Timber
 0.3/4" Carrot
0.2/4" Madison
0.3/5" Fisher 		10-15 G30-45 SW-NW
Wednesday 11/25/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.1/1" Carrot
0.1/1" Madison
0.1/2" Fisher 		10-20 G 25-45 W-SW
Tuesday 11/24/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		5-15 G20 Bridgers G40 W-NW
Monday 11/23/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		5-15 G20-30 SW-W
Sunday 11/22/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-25 G25-45 SW-NW
Saturday 11/21/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-15 G20-35 W-NW
Friday 11/20/20 0.1/2" Brackett
0.2/2" Shower
0.1/1" Timber
 0.1/1" Carrot
0.2/1" Madison
0.3/3" Fisher 		10-15 G30-40 SW-NW
Thursday 11/19/20 0.6/4" Alpine
0.2/2" Shower
0.3/3" Lone
 0.7/3" Carrot
0.8/6" Madison
0.8/6" Fisher 		15-20 G35-50 W-SW
Wednesday 11/18/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-25 G45-60 S-SW
Tuesday 11/17/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.2/2" Fisher 		10-20 G30-45 SW-W
Monday 11/16/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.1/1" Madison
0.2/2" Fisher 		15-20 G35-60 SW-W
Sunday 11/15/20 0.0/0" Brackett
0.0/0" Shower
0.1/1" Lone
 0.2/2" Carrot
0.3/3" Madison
0.2/2" Fisher 		15-25 G30-50 W-SW
Saturday 11/14/20 0.2/1" Brackett
0.2/2" Shower
0.4/4" Timber
 1.2/12" Carrot
1.0/10" Madison
0.8/9" Fisher 		20-30
G45-75 		W
Friday 11/13/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-30 G30-50 SW-W
Thursday 11/12/20 0.2/3" Brackett
0.3/4" Shower
0.1/2" Lone
 0.0/0" Carrot
0.0/0" Madison
0.1/1" Fisher 		15-30
G50 Bridgers 		W Small skier triggered slides in Northern Bridgers
Wednesday 11/11/20 0.2/3" Brackett
0.1/1" Shower
0.1/1" Lone
 0.1/1" Carrot
0.2/3" Madison
0.2/2" Fisher 		10-20 G35-50 SW-W
Tuesday 11/10/20 0.1/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-20 G35-55 SW-NW
Monday 11/9/20 0.1/2" Alpine
0.1/2" Shower
0.2/2" Lone
 0.1/1" Carrot
0.3/4" Madison
0.3/4" Fisher 		10-15 G25 E-S-SW-W
W-NW Cooke
Sunday 11/8/20 0.5/4" Alpine
0.5/3" Shower
0.4/3" Lone
 0.4/3" Carrot
0.3/3" Madison
0.9/9" Fisher 		5-20
G25-45 		ENE-E-SE-S
Saturday 11/7/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-25 G50 S-SW
Friday 11/6/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-35 G50 SW-W
Thursday 11/5/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-25 G30-50 W-SW
NW-Cooke
Wednesday 11/4/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-25 G45 W-SW
Tuesday 11/3/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-15 G30 W-SW
Monday 11/2/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		10-15 G25 SW-W
Sunday 11/1/20 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 G30 W-SW
NW-Cooke
Saturday 10/31/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-25 G30-60 W-SW Natural wind slab avalanches near Cooke
Friday 10/30/20 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 G40
5-15 G20 Cooke 		W-SW
SW-N Cooke
Thursday 10/29/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-25 G45
5-15 G25 Cooke City 		W
W-NW Cooke City
Wednesday 10/28/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-25 G40
G50 Bridger 		W-NW
Tuesday 10/27/20 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
30-50 Bridger 		W-SW
Monday 10/26/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		15-25 G35 W-NW Skier triggered wind slab at Bridger
Sunday 10/25/20 0.3/4" Brackett
0.2/3" Shower
0.1/1" Timber
 0.3/3" Carrot
0.2/2" Madison
0.3/3" Fisher 		10-20
35 G60 Bridger 		SE-NE
Saturday 10/24/20 0.7/6" Alpine
0.4/3" Shower
0.3/3" Timber
 0.6/5" Carrot
0.4/4" Madison
0.7/6" Fisher 		10-25
G45 		W-SW Cracking wind drifts in Cooke City
Friday 10/23/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.0/0" Fisher 		5-15 WSW
NW-Cooke 		Avalanches and cracking in Frazier Basin;
Small avalanche on Sphinx Mountain;
Loose snow avalanches on Blackmore
Thursday 10/22/20 0.4/8" Alpine
0.3/3" Shower
0.0/2" Timber
 0.0/0" Carrot
0.5/3" Madison
0.8/4" Fisher 		5-15 G30 W-NW Widespread dry loose in Hyalite
Wednesday 10/21/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.9/6" Fisher 		15-20 G35-40 NW-W
Tuesday 10/20/20 0.2/2" Brackett
0.7/5" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
0.8/6" Fisher 		15-20 G 40-50 SW-NW

@0700
Monday 10/19/20 1.1/5" Brackett
1.1/5" Shower
0.3/3" Lone
 0.7/4" Carrot
0.2/1" Madison
1.3/9" Fisher 		10-20 G40-50 NW-W Natural avalanches near Fairy Lake
Sunday 10/18/20 0.4/3" Brackett
0.4/3" Shower
0.1/1" Lone
 0.0/0" Carrot
0.0/0" Madison
0.5/4" Fisher 		15-30 G50 NW-W
Saturday 10/17/20 0.2/0" Brackett
0.5/0" Shower
0.2/0" Lone
 0.0/0" Carrot
0.0/0" Lionhead
1.0/4" Fisher 		20-30 G50 W

Precip mostly rain overnight 10/16. Temps dropping and switching to snow on morning of 10/17.
Friday 10/16/20 0.2/2" Brackett
0.3/3" Shower
0.1/1" Lone
 0.0/0" Carrot
0.0/0" Madison
0.2/2" Fisher 		15-25 G40
 W
NW Cooke

@0600
Thursday 10/15/20 0.2/3" Brackett
0.5/5" Shower
0.1/1" Lone
 0.0/0" Carrot
0.0/0" Madison
0.2/2" Fisher 		10-20 G30-40 W-NW

@0600
Wednesday 10/14/20 0.9/0" Brackett
0.7/0" Shower
0.5/0" Timber
 0.2/0" Carrot
0.2/0" Madison
1.6/3" Fisher 		30-40 G50-70
G80 Hyalite 		W

Precip mostly rain evening 10/13, some wet snow high near Cooke.
Tuesday 10/13/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.1/1" Fisher 		15-30 W-SW
Monday 10/12/20 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
0.2/2" Fisher 		20-50 W-SW
Sunday 10/11/20 0.6/0" Brackett
0.7/1" Shower
0.6/0" Lone
 0.6/1" Carrot
0.7/0" Madison
0.7/6" Fisher

@1pm: Measurements are Preciptation (inches) instead of SWE. Lower elevations had rain, and snow depths varied from 0-6".

Previous Years Weather and Avalanche Log

17-18 | 18-19 | 19-20