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
Friday 4/30/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		15 G25-30 W-SW

Overnight temps 40 F at 8,000-9,500'. 50-60 F at 6,000-7,500'.
Thursday 4/29/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		15-20
G35-50 		W Natural wet slides on Republic Mtn

Overnight temps >0C below 8,000' elev.
Wednesday 4/28/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-20
G22-35 		W-SW Natural wet loose slides in Absarokas;
Natural wet slides in Bridger Range, 4/26-4/28
Tuesday 4/27/21 0.1/1" Brackett
0.1/1" Shower
0.1/1" Lone
 0.4/3" Carrot
0.0/0" Madison
/
0.2/2" Fisher 		5-10 G20 W-N-NE
Monday 4/26/21 1.0/7" Brackett
0.2/3" Shower
0.6/7" Timber
 0.7/7" Carrot
0.3/2" Madison
/
0.6/6" Fisher 		10-15
G20-35 		SW-W Natural new snow avalanches at Bridger and N. Madison
Sunday 4/25/21 0.3/3" Brackett
0.2/1" Shower
0.3/2" Timber
 0.9/7" Carrot
0.2/0" Madison
/
1.1/10" Fisher 		10-20
G20-35 		W-SW
Saturday 4/24/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-15 G25 W-SW
Friday 4/23/21 0.3/2" Brackett
0.3/2" Shower
0.1/1" Lone
 0.0/0" Carrot
0.0/0" Madison
/
0.2/1" Fisher 		5-15 G20 E-Bridgers
W-Big Sky
S-Cooke
Thursday 4/22/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-15 G20 W-NW
Wednesday 4/21/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		5-10 G15 SE-NE
Tuesday 4/20/21 0.2/2" Brackett
0.1/1" Shower
0.1/2" Timber
 0.1/1" Carrot
0.0/0" Madison
/
0.1/1" Fisher 		5-10 G15-25 W-NW-N
Monday 4/19/21 0.5/7" Brackett
0.1/1" Shower
0.1/1" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.1/2" Fisher 		5-10 G15
25 G43 Bridger 		NW-N
E@Bridger
Sunday 4/18/21 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
G20-25 		NW
Saturday 4/17/21 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 G25 N-NE
Friday 4/16/21 0.1/1" Brackett
0.0/0" Shower
0.0/0" Timber
 0.1/1" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		5-15 G20-30 NE-E
Thursday 4/15/21 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		5-10 G25 E-NE
Wednesday 4/14/21 0.2/2" Brackett
0.1/1" Shower
0.0/1" Lobo
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-20 G20-30 NE-E
Tuesday 4/13/21 0.1/1" Brackett
0.0/0" Shower
0.0/0" Lone
 0.1/1" Carrot
0.0/0" Madison
/
0.0/0" Fisher
Monday 4/12/21 0.2/2" Brackett
0.1/1" Shower
0.1/1" Lobo
 0.1/1" Carrot
0.0/0" Madison
/
0.2/2" Fisher 		5-10 G20 N-NW
Sunday 4/11/21 0.2/2" Bridger
0.5/5" Shower
0.2/3" Lobo
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-20
G25-35 		SW-NW

Last daily avalanche forecast.
Saturday 4/10/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		15-20
G25-45 		W-SW
Friday 4/9/21 0.1/1" Brackett
0.7/6" Shower
0.4/5" Timber
 0.3/4" Carrot
0.2/3" Madison
/
0.2/2" Fisher 		15-25 G30-40 SW-NW Natural wind slabs in Absaroka
Thursday 4/8/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Lionhead
/
0.0/0" Fisher 		10-15 G25-40 SW-W
Wednesday 4/7/21 0.2/2" Brackett
0.4/4" Shower
0.1/1" Lobo
 0.2/2" Carrot
0.1/1" Madison
/
0.2/2" Fisher 		10-20 G25 SW-NW

Temps in the 20s F all night, beginning to rise at 0400 in some areas
Tuesday 4/6/21 0.3/3" Brackett
0.8/6" Shower
0.3/3" Timber
 0.8/8" Carrot
0.4/6" Madison
/
0.4/4" Fisher 		5-10 G30 N

Precip likely began as rain in some areas before turning to snow. Winds hit all directions before turning north. The last of the weather stations dipped below freezing at 1900, many areas got a full 24 hours of below freezing temps. 
Monday 4/5/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		15-20
G25-30 		SW-W
ESE-Bridger

Light freeze with temps near freezing and clouds.
Sunday 4/4/21 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 G35 W-SW Wet Slab in Main Boulder;
Collapse in wet snow near Cooke

Poor/No freeze last night?
Saturday 4/3/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-15 G25-35 W Wet, Loose Avalanches, Beehive Basin;
Natural wet loose avalanche in N. Bridgers

Poor/No Refreeze
Friday 4/2/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-25 G45-55 SW-W Natural wet loose in N. Bridgers

No freeze at lower elevations
Thursday 4/1/21 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 G25 SW-W
Wednesday 3/31/21 0.1/3" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-G30; 30-G50 Bridger SW-NW
Tuesday 3/30/21 0.1/1" Brackett
0.2/2" Shower
0.1/2" Lobo
 0.1/1" Carrot
0.1/1" Madison
/
0.1/1" Fisher 		10-20 G30-40 W-NW
Monday 3/29/21 0.1/1" Alpine
0.1/1" Shower
0.1/2" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		20-40
G75-85
60 G104 BigSky 		SW-W
Sunday 3/28/21 0.2/2" Brackett
0.1/1" Shower
0.1/1" Lone
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		15-25 G35-55 W-SW Small natural wind slabs in Hyalite;
Wind-Slab, Miller Mountain;
Small Natural Avalanche, Saddle Peak;
Natural Avalanches on Wind-Loaded Slopes, Taylor Fork
Saturday 3/27/21 0.1/1" Brackett
0.1/1" Shower
0.2/10" Bavaria
 0.1/1" Carrot
0.0/0" Madison
/
0.1/1" Fisher 		15-20
G30-40 		NW-W Skier triggered wind slab, S. Madison;
Natural avalanches in Hyalite: A Lowe peak, Flanders;
Skier triggered wind slabs Mt Blackmore;
Skier remote triggered deep slab near Mt Blackmore;
Skier triggered wind slab in Hyalite;
Sled triggered large avalanche, McAtee Basin;
Large natural wind slab on Iceberg Peak, near Cooke
Friday 3/26/21 0.2/2" Brackett
0.5/5" Shower
0.5/9" Timber
 0.3/3" Carrot
0.1/1" Madison
/
0.1/1" Fisher 		5-10
G25 Bridgers 		N-W
E in Cooke 		Small skier triggered wind slab in Middle Basin;
Small Slab on Electric Peak;
Large natural in Tobacco Roots
Thursday 3/25/21 0.6/7" Brackett
0.2/2" Shower
0.3/10" Timber
 0.3/3" Carrot
0.3/3" Madison
/
0.2/2" Fisher 		10-15 G25-30 S-W
Wednesday 3/24/21 0.1/1" Brackett
0.2/2" Shower
0.1/1" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-20 G35 Bridgers SW-NW Texas Meadow whumpfing and cracking
Tuesday 3/23/21 0.7/7" Alpine
0.3/4" Shower
0.5/8" Timber
 0.3/4" Carrot
0.2/3" Madison
/
0.2/3" Fisher 		5-15 G10-25 NW-N Small soft slab triggered on Mummy (Flanders Side)
Monday 3/22/21 0.1/1" Alpine
0.0/0" Shower
0.1/3" Lobo
 0.0/0" Carrot
0.1/1" Madison
/
0.0/0" Fisher 		10-20 G20-35 W-SW Small cornice triggered slide above Blackmore Lake
Sunday 3/21/21 0.3/4" Bridger
0.6/5" Shower
0.6/5" Lone
 0.6/5" Carrot
0.9/10" Madison
/
0.7/8" Fisher 		10-20 G25-35 NW Skier Triggered Avalanche, Alex Lowe Peak ;
Skier Triggered Avalanche, Mount Blackmore;
Small Skier Triggered Sluff, Beehive Basin
Saturday 3/20/21 0.6/5" Alpine
0.7/6" Shower
0.6/7" Timber
 0.8/8" Carrot
0.6/6" Madison
/
0.2/2" Fisher 		0-5 G15 W-SW Remote triggered slab Hyalite Peak
Friday 3/19/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-20 G25-35 S-W
Thursday 3/18/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		5-10 G25 S-SW
Wednesday 3/17/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		1-10 SE Large Whumph in Specimen Creek
Tuesday 3/16/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		5-10 G20-35 W-N
Monday 3/15/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lobo
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		5-10 G20 SW-W
Sunday 3/14/21 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 G20-30
35 G52 Bridgers 		E-NE
Saturday 3/13/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		5-10 G10-20 N-E Natural cornice fall nearly missed skiers, near Abiathar
Thursday 3/11/21 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 G10 W-N
Wednesday 3/10/21 0.2/2" Brackett
0.2/2" Shower
0.1/2" Lobo
 0.2/2" Carrot
0.2/2" Madison
/
0.3/3" Fisher 		5-10 G15 W-N Skier triggered loose snow slide, Rasta Chutes
Tuesday 3/9/21 0.2/2" Brackett
0.2/2" Shower
0.2/3" Timber
 0.5/4" Carrot
0.4/6" Madison
/
0.3/3" Fisher 		10-20 G40 SW-NW Small Storm Slabs in Cooke City
Monday 3/8/21 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 G20
G44 Big Sky 		SW-S
Sunday 3/7/21 0.5/4" Alpine
0.0/0" Shower
0.1/1" Lone
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-15 G25
G36 Cooke 		SW
Saturday 3/6/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-20 G30
G55 in Hyalite 		SW-SE
Friday 3/5/21 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 G20 S-W Natural avalanche (bison trigger?) in YNP near Cooke;
Snowmobile Triggered Avalanche, East of Cooke City
Thursday 3/4/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		5-10 G20 W-SW in north; E-SE in south Natural Avalanche West of Cooke City;
Small Skier Triggered Slide in Gallatin Canyon;
Wet loose in Beehive
Wednesday 3/3/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-15 G 30 W-SW
Tuesday 3/2/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lobo
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-20 G40
30 G50 Hyalite 		W-SW Wet loose slides on Buck and 191
Monday 3/1/21 0.0/0" Bridger
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		15-25 G30-50 WNW-SW
Sunday 2/28/21 0.2/4" Alpine
0.1/3" Shower
0.1/2" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		25 G30-50
10 G20 south 		SW-NW Snowbike triggered avalanche, Red Canyon near W. yellowstone;
Third Yellow Mule / Skier triggered slide + sympathetic;
Natural avalanche at Daisy Pass, Cooke City;
Small Avalanche in Specimen Creek;
Two large deep slabs near Maid of the Mist;
Deep slab in S Madison on Finger Mtn.
Saturday 2/27/21 0.5/7" Brackett
0.4/4" Shower
0.3/4" Timber
 0.3/3" Carrot
0.7/10" Madison
/
0.3/3" Fisher 		5-10 G25 SW-NW Skier triggered cornice N of Peters Point, adjacent to Bridger Bowl boundary;
Sage Basin Avalanche;
Large avalanche on Big Horn Peak
Friday 2/26/21 0.0/0" Brackett
0.0/0" Shower
0.1/2" Timber
 0.3/4" Carrot
0.4/4" Madison
/
0.2/2" Fisher 		15-25 G35-55 S-W
Thursday 2/25/21 0.1/2" Alpine
0.1/1" Shower
0.1/2" Lobo
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		15-25 G40 in Bridgers W-SW Natural avalanche on Buck Ridge
Wednesday 2/24/21 0.1/2" Alpine
0.1/2" Shower
0.2/3" Timber
 0.1/-1" Carrot
0.1/1" Madison
/
0.2/2" Fisher 		10-15 G25 W-SW Small natural avalanche in Beaver Creek;
Elephant Mountain natural avalanche, Hyalite;
Natural deep slab avalanches on Cedar Mtn;
Natural slides in Hyalite Basin;
Small natural near Fawn Pass;
Natural avalanche in Madisons
Tuesday 2/23/21 0.8/8" Brackett
0.1/1" Shower
0.3/2" Timber
 0.2/2" Carrot
0.3/3" Madison
/
1.0/10" Fisher 		20-30 G60-75
15 G40 Taylor/ West 		W-SW Natural Wind Slab avalanches around Cooke City;
Cornice triggered avalanche on Wolverine Peak;
Deep avalanche on wind loaded slope near Cooke
Monday 2/22/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Lobo
 0.3/4" Carrot
0.2/3" Madison
/
0.1/2" Fisher 		25-30 G60-70 North
10-20 G30-40 South 		W-SW Natural and deep avalanche in Lone Lake Cirque
Sunday 2/21/21 0.2/2" Bridger
0.1/3" Shower
0.2/2" Lone
 0.2/3" Carrot
0.0/0" Madison
/
0.1/2" Fisher 		20-30
G40-57
15-25 south 		W-SW
WNW Cooke 		Natural Avalanches, Thunderer Mountain
Saturday 2/20/21 0.2/2" Brackett
0.1/1" Shower
0.1/1" Timber
 0.3/4" Carrot
0.3/3" Madison
/
0.4/4" Fisher 		10-20
G20-30 		W-SW Snowmobile triggered Avalanches (2), McAtee Basin;
Collapse on town hill near Cooke;
Natural Avalanche, Northern Madison Range;
Specimen Creek ;
Natural on Ridge North of Blackmore
Friday 2/19/21 0.1/2" Alpine
0.2/2" Shower
0.2/6" Timber
 0.2/2" Carrot
0.3/3" Madison
/
0.1/1" Fisher 		25-30 G40-50
10-15 G25 West & Cooke 		S-W Whumph and small avalanche in Gallatin Canyon;
Whumph on Little Mt. Ellis;
Natural Deep Slab on A. Lowe Peak
Thursday 2/18/21 0.2/5" Alpine
0.3/5" Shower
0.3/4" Lookout
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-20 W-NW Natural New snow slabs, cornice falls, dry loose in south Bridgers;
Snowmobile Triggered Slide on Crown Butte;
Natural avalanche below Maid of the Mist;
Natural avalanche on Blackmore east face;
Natural Deep Slab Flanders
Wednesday 2/17/21 0.7/8" Alpine
1.0/12" Shower
0.6/8" Timber
 0.3/4" Carrot
0.1/1" Madison
/
0.1/2" Fisher 		15 G25-30 W-NW

AVALANCHE WARNING for Bridger, northern Madison and northern Gallatin Ranges.
Tuesday 2/16/21 1.1/11" Brackett
0.3/4" Shower
0.5/12" Timber
 0.7/8" Carrot
0.4/5" Madison
/
0.3/4" Fisher 		10-20 G40 W (NW Cooke) Snowmobile triggered road cut in Olson Creek;
Wind Slab, Fisher Mountain
Monday 2/15/21 0.4/8" Brackett
0.2/4" Shower
0.2/2" Lobo
 0.2/3" Carrot
0.2/3" Madison
/
0.2/3" Fisher 		5-15 G30 SW-NW Collapsing Near Hebgen Lake
Sunday 2/14/21 0.0/2" Brackett
0.0/0" Shower
0.0/0" Lone
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		5-15 G20
25-35 G50 Bridger 		NE-SE Splitboarder triggered, caught and killed in Beehive;
Very Large, Natural Avalanches Divide Basin
Saturday 2/13/21 0.0/0" Brackett
0.2/2" Shower
0.2/2" Timber
 0.1/1" Carrot
0.2/3" Madison
/
0.2/2" Fisher 		5-15 G10-20 NW-W
E in Bridgers & Lionhead 		Natural slide in Hayden Ck south of Cooke;
Wind slab avalanche north of Bridger;
Snowmobile triggered slides in Cabin Creek;
Snowmobile triggered small slides near Daisy Pass;
Natural Avalanche, West Side Woody Ridge
Friday 2/12/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.1/1" Madison
/
0.0/0" Fisher 		10-20 G30-40 SW-NW
E in Bridgers 		Small Natural Avalanche, Scotch Bonnet
Thursday 2/11/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		15-30 G40-50 Madisons SW-NW Remotely triggered avalanches in Portal Creek;
Snowmobile Triggered Slide on Lionhead Ridge;
Ernie Miller Ridge Naturals
Wednesday 2/10/21 0.0/0" Alpine
0.0/0" Shower
0.0/0" Lobo
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-20 G40
30 G60 Taylor Fork 		W
Tuesday 2/9/21 0.4/9" Alpine
0.3/6" Shower
0.1/3" Timber
 0.2/4" Carrot
0.0/0" Madison
/
0.2/4" Fisher 		10-20 G40 W-SW Natural Avalanche on Town Hill, Cooke City;
Large natural avalanche on Mt. Abundance, Cooke;
Natural avalanche on Henderson Ridge, Cooke City;
Natural avalanches on Woody Ridge
Monday 2/8/21 0.2/4" Alpine
0.6/6" Shower
0.6/6" Timber
 0.4/4" Carrot
0.0/0" Madison
/
0.2/2" Fisher 		15-25 G25-40 W-NW Remote Trigger Outside of YC;
Sheep Creek - Gully east of Miller Trees;
Small Avalanches, Ramp;
Cooke City Soft Slabs;
Many natural avalanches on Buck Ridge;
Many Natural Avalanches - Muddy Creek;
Natural Avalanches on Cedar mountain;
Natural, North Face Alex Lowe;
Middle Basin Avalanches
Sunday 2/7/21 0.5/6" Brackett
0.5/6" Shower
0.9/16" Timber
 0.8/8" Carrot
0.5/5" Black Bear
/
1.0/10" Fisher 		15-25 G35-55
G69 Taylor Fork 		W-NW Skier triggered test slope (and collapses) Beehive ;
Natural avalanahce (and collapsing) Specimen Creek;
Natural avalanche in Y-couloir west side Bridgers;
Natural avalanche on Cedar Mtn.;
Large explosive triggered, and naturals on road cuts, at Y.C. ;
Natural new snow slabs in YNP near Cooke;
Dudley Creek;
Widespread Cracking on Mt Ellis;
Natural Avalanches, Yellow Mountain ;
Multiple avalanche on Skyline Ridge;
Natural Avalanche on Lionhead Ridge;
Natural avalanche in Beehive Basin

AVALANCHE WARNING for Bridgers, Madisons, Gallatins, Cooke City

(snow totals @0600)
Saturday 2/6/21 1.1/12" Alpine
0.8/8" Shower
0.4/7" Timber
 0.5/6" Beaver
0.4/4" Black Bear
/
0.7/6" Fisher 		20-30 G50-60 W-NW Collapses and small remote triggered avalanche specimen crk ;
Whumphing and small dry loose slides near Ross Peak;
Snowmobile triggered near Lionhead;
Skier remote triggered small slab, N. Bridgers;
Natural avalanches along Bridger Ridge;
Natural Avalanches West of Cooke City
Friday 2/5/21 1.0/12" Alpine
0.6/8" Shower
0.3/7" Timber
 0.4/4" Carrot
0.5/8" Black Bear
/
0.3/3" Fisher 		15-20 G30-35
G45 Hyalite 		W-NW Skier triggered and partially buried on Woody Ridge;
Whumpfs and cracks in Specimen Creek;
Natural avalanche near Fairy Lake;
Whumpfs at Bacon Rind;
Large natural avalanche in Divide cirque;
Large Natural avalanches on Saddle Peak and Truman Gulch;
Natural below Maid of the Mist;
Small Natural Avalanches north of Bridger;
Skier triggered slide from cornice, Cooke

AVALANCHE WARNING for Bridgers
Thursday 2/4/21 0.3/5" Brackett
0.5/6" Shower
0.2/3" Lone
 0.1/1" Carrot
0.3/3" Madison
/
0.4/5" Fisher 		15-20 G 40 W-NW
Wednesday 2/3/21 0.5/6" Brackett
0.5/6" Shower
0.3/5" Timber
 0.3/3" Carrot
0.4/4" Madison
/
0.3/3" Fisher 		10-20 G40 W-SW Small natural slide on Saddle Peak
Tuesday 2/2/21 0.0/0" Bridger
0.0/0" Shower
0.0/0" Lobo
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		10-20 G45 SW Several large whumpfs on way to Fawn Pass, YNP
Monday 2/1/21 0.0/0" Alpine
0.0/0" Shower
0.0/0" Timber
 0.0/0" Carrot
0.0/0" Madison
/
0.0/0" Fisher 		15-25 G40
5-10 G30 West & Cooke 		S-W Snowmobiler triggered avalanche, Lionhead
Sunday 1/31/21 0.3/3" Bridger
0.2/3" Shower
0.3/4" Lookout
 0.2/3" Carrot
0.1/4" Madison
/
0.3/4" Fisher 		10-15
G15-25 		W-SW
Saturday 1/30/21 0.4/4" Brackett
0.3/4" Shower
0.3/6" Timber
 0.9/9" Carrot
0.7/7" Madison
/
0.3/4" Fisher 		5-15
G15-20 		SW-W-NW Natural Avalanches in Beehive;
Large natural sluffs in Flanders/Hyalite;
Widespread, large collapses shaking trees in S. Gallatin;
Skiers remote triggered very large slide Ernest Miller Ridge;
Natural avalanche in Maid of the Mist;
Avalanche on Yellow Mountain ;
Natural avalanches near Cooke City;
many small remote triggered slabs near Cooke;
Natural and snowmobile triggered avalanches in Taylor Fork;
Natural avalanche on Woodward Mountain;
Natural Avalanche, Fin;
Major avalanche cycle;
Meldrum Peak Natural Avalanche

AVALANCHE WARNING for the Centennials
Friday 1/29/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.7/7" Carrot
0.6/6" Madison
/
0.2/2" Fisher 		10-20 G50 S-W Skier triggered slides N. Madison;
Whumphing and natural avalanches at Taylor Fork

AVALANCHE WARNING for the Centennials
Thursday 1/28/21 0.0/0" Brackett
0.0/0" Shower
0.0/0" Timber
 0.5/10" Carrot
0.3/6" Madison
/
0.1/2" Fisher 		15-30 G50 S-SW Large Collapses in S. Gallatin

@0500
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;
Natural in Divide Basin

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 | 20-21 | 21-22 | 22-23 | 23-24