November 20-21st Snow Storm Summary

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A storm system moved through the region this week, depositing a thin layer of snow over most of the forecast area with some lower elevation spots receiving as much as 6 1/2 inches of snow. The storm brought along a very sharp cold front that sent temperatures plummeting from the mid 50's into the teens in less than an hour in some cases.  As of early Thursday afternoon, snow was still ongoing across portions of Sweetwater County and around Casper but all snow should end by sunset with only a few flurries remaining.

The storm also brought a lot of wind with gusts exceeding 50 mph in some areas. The gusty winds in addition to the light, fluffy snow reduced visibility to near zero at times. Several accidents were reported along Interstate 80 during the event with occasional closures experienced. Wind chills will be well below zero through the day across eastern Sweetwater County.

Skies are expected to clear overnight, and with the arctic air in place behind the front and a surface high building in...temperatures are expected to rapidly plummet into the single digits for most areas east of the divide with temperatures well below zero across the west and in the central basin river valleys.

Click to enlarge

Several inches of snow fell over the ski areas around Jackson, but not much fell in town due to downsloping affects off of the mountains.

The above video was posted by Jackson Hole Mountain Resort @jhski on Twitter

   Click to Enlarge

Travel was difficult along many roads throughout the event due to a burst of heavy snow and strong, gusty winds causing areas of blowing and drifting snow.

The above picture is of the WYDoT web cam near Bitter Creek on Thursday morning experiencing a lot of drifting snow and strong winds.


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Snowfall Totals November 20-21, 2013
County Station Name Snowfall
Big Horn Shell Creek Snotel 4
Big Horn 2 SSW Lovell 3
Big Horn Bone Springs Divide Snotel 3
Big Horn Bald Mountain Snotel 3
Big Horn Greybull 2.6
Big Horn Otto 2
Big Horn Shell 1.5
County Station Name Snowfall
Fremont Brooks Lake Lodge 5.5
Fremont 5 WSW Lander 4.5
Fremont 3 SW Lander 4
Fremont Castle Creek Snotel 4
Fremont 9 S Lander 4
Fremont Dubois 4
Fremont Lander Airport 3.5
Fremont 1 W Lander 3.5
Fremont 9 SSE Lander 3.5
Fremont 1 WSW Lander 3.2
Fremont 6 SW Lander 3.2
Fremont Little Warm Snotel 3
Fremont Lander 3
Fremont Hudson 3
Fremont 9 SW Lander 2.5
Fremont 7 WNW Lander 2.2
Fremont South Pass Snotel 2
Fremont Hobbs Park Snotel 2
Fremont Deer Park Snotel 2
Fremont St. Lawrence Alt Snotel 2
Fremont Townsend Creek Snotel 2
Fremont Jeffrey City 2
Fremont Atlantic City 2
Fremont Riverton Airport 1.5
Fremont Cold Springs Snotel 1
Fremont Boysen Dam 1
Fremont Riverton 1
Fremont Burris 0.3
County Station Name Snowfall
Hot Springs 1 SW Thermopolis 6.6
Hot Springs Thermopolis 4-6
Hot Springs 8 W Thermopolis 6
Hot Springs Owl Creek Snotel 5
Hot Springs 9 NE Thermopolis 2.4
County Station Name Snowfall
Johnson Little Goose Snotel 4
Johnson Cloud Peak Reservoir Snotel 4
Johnson Soldier Park Snotel 3
Johnson Hansen Sawmill Snotel 2
Johnson 17 NNW Kaycee 2
Johnson 4 SSW Buffalo 1.5
Johnson Buffalo 0.7
County Station Name Snowfall
Lincoln Blind Bull Summit 7
Lincoln Commissary Ridge 6
Lincoln Willow Creek Snotel 5
Lincoln Cottonwood Creek Snotel 4
Lincoln Indian Creek Snotel 4
Lincoln Box Y Ranch 4
Lincoln 5 SSE Smoot 4
Lincoln Blind Bull Summit Snotel 3
Lincoln Salt River Summit Snotel 3
Lincoln Spring Creek Divide Snotel 3
Lincoln Afton 2.4
Lincoln Kelley Ranger Station Snotel 2
Lincoln Kemmerer 2
Lincoln Hams Fork Snotel 2
Lincoln 3 SE Bedford 2
Lincoln 2 SE Thayne 1.8
Lincoln 5 NNE Thayne 1
County Station Name Snowfall
Natrona 3 SW Casper 4
Natrona Casper Airport 3.5
Natrona Casper Mountain 3
Natrona 4 NE Evansville 2.5
Natrona 2 S Casper 2.3
Natrona 4 WSW Casper 2.1
Natrona 4 SW Casper 2.1
Natrona Powder River School 2
Natrona Casper Mountain 2
Natrona 5 SW Casper 2
Natrona 3 NNE Casper 1.7
Natrona Casper 1.7
Natrona 11 ESE Casper 1.6
Natrona 9 E Casper 1.5
Natrona 10 WSW Casper 1.5
Natrona 1 WSW Casper 1.5
Natrona Reno Hill Snotel 1
Natrona Casper Mountain Snotel 1
County Station Name Snowfall
Park Kirwin Snotel 6
Park Blackwater Snotel 6
Park Timber Creek Snotel 6
Park 3 NE Sunshine 5.2
Park Beartooth Lake Snotel 5
Park Evening Star Snotel 5
Park 5 ESE Cody 4.8
Park Marquette Snotel 4
Park Wolverine Snotel 4
Park 4 SW Powell 2.5
Park 2 WSW Cody 2
Park Pahaska 1
Park 2 SW Powell 0.5
County Station Name Snowfall
Sublette Elkhart Park G.S. Snotel 6
Sublette Pinedale 5.8
Sublette 13 SE Pinedale 5.2
Sublette Marbleton 5
Sublette 1 NE Pinedale 5
Sublette Pocket Creek Snotel 4
Sublette Gunsite Pass Snotel 4
Sublette Boulder Rearing Station 4
Sublette Big Sandy Opening Snotel 3
Sublette Snider Basin Snotel 3
Sublette Daniel Fish Hatchery 2
Sublette Larsen Creek Snotel 2
Sublette Triple Peak Snotel 2
Sublette East Rim Divide Snotel 2
Sublette Kendall Ranger Station Snotel 1
Sublette 14 NW Pinedale 0.8
Sublette Bondurant 0.7
County Station Name Snowfall
Sweetwater 1 S Rock Springs 2
Sweetwater 1 W Rock Springs 1.2
Sweetwater 1 E Rock Springs 1.1
Sweetwater Green River 1
County Station Name Snowfall
Teton Grand Targhee Snotel 11
Teton Grand Targhee-Chief Joseph 9
Teton Jackson Hole-Raymer 8
Teton Jackson Hole-Rendezvous Bowl 7
Teton Grassy Lake Snotel 7
Teton Snow King Ski Area 5
Teton Base Camp Snotel 5
Teton Jackson Hole-Mid 5
Teton Togwotee Mountain Lodge 4.5
Teton Togwotee Pass Snotel 3
Teton Phillips Bench Snotel 3
Teton Gros Ventre Summit Snotel 3
Teton Alta 2
Teton Snake River Stn Snotel 2
Teton 5 WNW Moran 1
Teton 1 NNW Alta 1
Teton 3 SSW Wilson 0.5
Teton Moose 0.5
County Station Name Snowfall
Washakie 14 SSE Ten Sleep 4.8
Washakie 16 SSE Ten Sleep 4
Washakie 8 SW Worland 3
Washakie Winchester 3
Washakie Ten Sleep 2.8
County Station Name Snowfall
Yellowstone Lewis Lake Divide Snotel 14
Yellowstone Two Ocean Plateau Snotel 7
Yellowstone Thumb Divide Snotel 7
Yellowstone Parker Peak Snotel 6
Yellowstone Tower Falls Ranger Station 3
Yellowstone Sylvan Lake Snotel 2
Yellowstone Sylvan Road Snotel 2
Yellowstone Canyon Snotel 1

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November 20-21 Notable Wind Gusts
County Location Wind Gust (mph)
 Lincoln  Buffalo Airport 58
 Teton  1 W Grant Village 57
 Fremont  7 W Muddy Gap 54
 Bighorn  Greybull Airport  51
 Sweetwater  1 NNE Green River  50
 Park  10 WNW Cody 49
 Lincoln  25 ESE Buffalo  48
 Lincoln  11 NNW Buffalo  48
 Lincoln  5 ESE Story  47
 Lincoln  8 ENE Mayoworth  46
 Bighorn  2 N Frannie  46
 Fremont  Dubois  43
 Fremont  Riverton Airport  43
 Natrona  2 SE Hiland   42
 Natrona  16 S Hiland  42
 Fremont  Boysen Reservoir  42
 Lincoln  Kaycee  42
 Park  8 N Meeteetse  41
 Washakie  Worland Airport 40
 Fremont  South Pass 40
 Park  10 S Meeteetse 40
 Park  1 W Powell 40



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