Early December Storm Summary

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A long-lived winter storm pushed into the west over the weekend, with several inches of snow accumulating in the west on Sunday. Snow moved east of the Divide on Monday and into the central basins by Tuesday. Winds were also very strong with this storm, which led to High Wind Warnings along the Cody foothills and from eastern Sweetwater county into Natrona County. By the time skies cleared on Wednesday, some mountain locations accumulated over two FEET of snow while many low elevation locations accumulated over 6 inches with all of the forecast area reporting at least some accumulating snow during the event.

The snow was followed by a push of truly arctic air with some areas of Yellowstone reporting overnight lows near -40°F by Wednesday morning. The cold air will be in place for several days, occasional breezes will drop wind chills near -40°F, especially along the I-80 corridor and in eastern Sweetwater County. 

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WYDoT works to clear the roads around Casper on Tuesday - Photo by Lona Patton

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Not all impacts were negative! Jackson Ski areas are loving the fresh powder! - Photo from @jhski on Twitter


 

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Snow Map - Click to enlarge
County Station Name Snowfall
Big Horn Bone Springs Divide Snotel 13
Big Horn Bald Mountain Snotel 11
Big Horn Shell Creek Snotel 9
Big Horn Basin 2
Big Horn 2 SSW Lovell 2
Big Horn Shell 1.5
Fremont Castle Creek Snotel 13
Fremont South Pass Snotel 13
Fremont Brooks Lake Lodge 13
Fremont Deer Park Snotel 12
Fremont Little Warm Snotel 11
Fremont 10 W Dubois 10
Fremont Cold Springs Snotel 10
Fremont Hobbs Park Snotel 8
Fremont 5 WSW Lander 6.3
Fremont 9.5 SW Lander 6
Fremont Dubois 5.5
Fremont 9 SSE Lander 5.2
Fremont 6 SW Lander 4.5
Fremont Atlantic City 4.4
Fremont Lander Airport 4.3
Fremont Hudson 4
Fremont Townsend Creek Snotel 4
Fremont St. Lawrence Alt Snotel 4
Fremont Jeffrey City 4
Fremont Hudson 4
Fremont 2 E Sweetwater Station 3
Fremont Lander 2-4
Fremont Dubois 3
Fremont 5 SSW Riverton 2.5
Fremont Riverton Airport 2
Fremont 2 NW Dubois 2
Fremont Riverton 2
Fremont 4 W Atlantic City 1.5
Fremont Riverton 1.4
Fremont Boysen Dam 1
Hot Springs Owl Creek Snotel 5
Hot Springs 1 SW Thermopolis 4
Hot Springs Thermopolis 3
Hot Springs 9 NE Thermopolis 1.8
Hot Springs Kirby 0.5
Johnson Cloud Peak Reservoir Snotel 9
Johnson Little Goose Snotel 8
Johnson Soldier Park Snotel 7
Johnson 6 WNW Buffalo 6.5
Johnson 4 SSW Buffalo 6
Johnson Hansen Sawmill Snotel 6
Johnson 20 S Buffalo 5.5
Johnson Bear Trap Meadow Snotel 5
Johnson 6 WNW Buffalo 4.5
Johnson Buffalo 2.5-3.5
Johnson Kaycee 2
Lincoln Blind Bull Summit Snotel 30
Lincoln Commissary Ridge 23
Lincoln Blind Bull Summit 22
Lincoln Willow Creek Snotel 22
Lincoln Cottonwood Creek Snotel 21
Lincoln Spring Creek Divide Snotel 21
Lincoln Indian Creek Snotel 20
Lincoln Box Y Ranch 18
Lincoln Salt River Summit Snotel 10
Lincoln 5 SSE Smoot 9
Lincoln Kelley Ranger Station Snotel 9
Lincoln Hams Fork Snotel 6
Lincoln Kemmerer 5.5
Lincoln 2 SE Thayne 4.2
Lincoln Fossil Butte 4
Lincoln 1 N Kemmerer 3.2
Lincoln Afton 2
Lincoln Afton 0.5
Natrona Casper Mountain 5-6
Natrona 4 SW Casper 4.3
Natrona 1 SE Casper 4
Natrona Reno Hill Snotel 4
Natrona Casper Airport 1-3
Natrona Martin's Cove 3
Natrona Grave Spring Snotel 3
Natrona Bessemer Bend 2.8
Natrona Midwest 2
Natrona Evansville 2
Natrona 8 W Red Wall 2
Natrona Powder River School 1
Park Beartooth Lake Snotel 19
Park Evening Star Snotel 19
Park Blackwater Snotel 18
Park Wolverine Snotel 12
Park Pahaska 11
Park Timber Creek Snotel 7
Park Kirwin Snotel 6
Park 3 NE Sunshine 5.7
Park Meeteetse 5.5
Park Cody 4-5
Park Meeteetse 4
Park 4 SW Powell 3.2
Park Marquette Snotel 3
Park 2 WSW Cody 3
Park 4 SE Cody 2.7
Park 3 NE Clark 2.5
Park 3 NE Cody 2
Park Cody 2
Park 4 ENE Powell 2
Park 1 W Powell 1
Sublette Kendall Ranger Station Snotel 26
Sublette Triple Peak Snotel 23
Sublette Loomis Park Snotel 21
Sublette Gunsite Pass Snotel 19
Sublette New Fork Lake Snotel 17
Sublette Elkhart Park G.S. Snotel 17
Sublette Snider Basin Snotel 14
Sublette East Rim Divide Snotel 14
Sublette Bondurant 12.9
Sublette Merna 12
Sublette 10 N Cora 12
Sublette 14 NW Pinedale 7.8
Sublette Big Sandy Opening Snotel 7
Sublette Larsen Creek Snotel 7
Sublette Pocket Creek Snotel 4
Sublette Pinedale 2.3
Sublette Daniel Fish Hatchery 1.2
Sublette Boulder 1
Sublette 2 E Boulder 1
Sweetwater Green River 4-7
Sweetwater Burntfork 7
Sweetwater Buckboard Marina 6
Sweetwater Wamsutter 5
Sweetwater Rock Springs 2-4
Sweetwater Green River 3.8
Sweetwater Farson 2
Sweetwater Bairoil 2
Sweetwater Granger 2
Sweetwater 33 N Wamsutter 1
Teton Base Camp Snotel 22
Teton Jackson Hole-Raymer 21
Teton Grand Targhee Snotel 21
Teton Jackson Hole-Rendezvous Bowl 20
Teton Togwotee Pass Snotel 18
Teton Jackson Hole-Mid 18
Teton Grand Targhee-Chief Joseph 18
Teton Granite Creek Snotel 18
Teton Grassy Lake Snotel 17
Teton Phillips Bench Snotel 17
Teton Togwotee Mountain Lodge 16
Teton Snake River Stn Snotel 12
Teton Gros Ventre Summit Snotel 12
Teton 5 WNW Moran 11.6
Teton 1 NNW Alta 10
Teton Snow King Ski Area 9
Teton Alta 6.5
Teton Darwin Ranch 6
Teton Moose 5-6
Teton 9 SW Jackson 4
Teton 12 NE Jackson 4
Teton Jackson Hole-Base 3
Teton 2 NE Teton Village 1.5
Teton 2 NNW Moose 1.3
Teton Jackson Area
0.3-1.1
Washakie Powder River Pass Snotel 6
Washakie Middle Powder Snotel 5
Washakie 2 S Big Trails 1.5
Washakie Ten Sleep 1.5
Washakie 8 SW Worland 1
Washakie Winchester 0.3
Washakie Ten Sleep 0.2
Yellowstone Two Ocean Plateau Snotel 26
Yellowstone Lewis Lake Divide Snotel 22
Yellowstone Parker Peak Snotel 14
Yellowstone Thumb Divide Snotel 13
Yellowstone Sylvan Road Snotel 11
Yellowstone Canyon 10
Yellowstone Canyon Snotel 10
Yellowstone Sylvan Lake Snotel 10
Yellowstone Old Faithful Ranger Station 5
Yellowstone Tower Falls Ranger Station 4.6

Strongest Wind Banner

 

Strong winds occurred ahead of the storm on Sunday Night and Monday. Here are some of the strongest wind gusts recorded:

December 1-2 Notable Wind Gusts
Location Wind Gust (mph)
 Mt. Coffin (10,870 ft) 86
 Hoyt Peak (9,800 ft)  82 
 Chief Joseph Highway (8,136 ft) 76
 7 SW Muddy Gap (7,380 ft) 71
 Red Canyon (6,768 ft) 65
 7 NW Lander (5,797 ft) 64
 Summit - Jackson Resort (10,318 ft) 63
 5 WNW Clark (4,659 ft) 63
 16 S Hiland (6,380 ft) 62
 Raymer - Jackson Resort (9,360 ft) 61
 10 W Fort Washakie (9,235 ft) 60
 Lander Airport (5,586 ft) 59
 I-80 Mile Marker 157 (6,965 ft) 59
 Beaver Rim (6,784 ft) 58
7 SW Barnum (6,440 ft) 57
8 W South Pass City (8,185 ft) 56
8 N Meeteetse (5,926 ft) 55
Buffalo Airport (4,970 ft) 54
Riverton Airport (5,525 ft) 46
Kemmerer Airport (7,285 ft) 45
Casper Airport (5,320 ft) 43

 

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