Wednesday, November 12, 2014

Winter Storm Summary - Early November Frigid Air and Significant Snowfall

Winter Storm Summary - Early November Frigid Air and Significant Snowfall

The National Weather Service
Building a Weather-Ready Nation

After a warm start to fall, winter arrived overnight Sunday night into Monday, and brought widespread snow and cold across the Cowboy State. After a warm and at times, breezy weekend, a sharp arctic cold front brought cold and wintry conditions early Monday morning, with moderate to heavy snow experienced across many areas. Most areas had their daily high temperatures occur after midnight on Monday, with temperatures dipping into the single digits to teens by Monday night. A brief lull in snowfall was seen Monday night, before another front brought more snow and cold overnight Monday night into Veteran's Day. Although snow ended Tuesday afternoon and evening, bitterly cold temperatures remained across the region Wednesday.  The low of 26 below zero at Casper Airport Wednesday morning not only set a daily record low, but is the coldest temperatureever recorded for Casper in the month of November.  This bitter cold low would break record lows through December 4th for Casper.  Climate data for Casper goes back to 1939.  These temperatures are about 50 degrees below normal!  

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A composite radar loop starting at 145 AM and ending at 8 AM, Monday morning November 10th. Notice the moderate to heavy snow that develops from the Wind River Basin to Casper as the cold front pushes southward.  - Click to Enlarge

  A loop of hourly temperatures starting at 5 PM Sunday, November 9th, and ending at 8 AM. Notice how in 15 hours or less some areas have a 40 to 50 degree temperature change!  - Click to Enlarge
Click to enlarge  - WYDOT webcam photo of traffic backed up on I-80 due to accidents near Rock Springs
  Traffic backed up in the westbound lane of Interstate 80 just east of Rock Springs due to accidents caused by the very slick road conditions. Photo Courtesy of WYDOT

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Snow Map for Novembern 10th & 11th - Click to enlarge
Snowfall Totals for
November 10th and 11th
Big Horn26 E Lovell6
Big HornShell Creek Snotel6
Big HornBald Mountain Snotel5
Big HornBone Springs Divide Snotel4
Big Horn2 SSW Lovell2
Big HornShell2
Big HornGreybull0.9
Big HornBasin0.5
FremontBrooks Lake13
Fremont5 WSW Lander11.3
FremontLander Airport8.1
FremontLander6 to 8
FremontLittle Warm Snotel7
FremontHobbs Park Snotel7
FremontRiverton4 to 6
Fremont9 SSE Lander5
FremontCold Springs Snotel5
FremontBurroughs Creek Snotel5
FremontSt. Lawrence Alt Snotel4
FremontSouth Pass Snotel4
FremontTownsend Creek Snotel4
Fremont10 WNW Dubois3.5
FremontCastle Creek Snotel3
Fremont7 WNW Lander3
FremontDeer Park Snotel3
Fremont6 SE Lander2.8
FremontRiverton Airport2.1
FremontJeffrey City2
FremontAtlantic City1.4
FremontBoysen Dam0.5
Hot SpringsThermopolis8 to 10
Hot Springs9 NE Thermopolis6.9
Hot SpringsOwl Creek Snotel5
Hot SpringsKirby4.2
Hot SpringsLucerne3.5
Hot Springs8 W Thermopolis3
Hot Springs20 NW Thermopolis1
JohnsonCloud Peak Reservoir Snotel11
Johnson17 NNW Kaycee9.8
JohnsonHansen Sawmill Snotel6
JohnsonLittle Goose Snotel6
Johnson17 E Kaycee4.5
JohnsonSoldier Park Snotel4
Johnson4 SSW Buffalo3.5
JohnsonBuffalo2 to 3
JohnsonBear Trap Meadow Snotel3
LincolnCottonwood Creek Snotel10
LincolnCommissary Ridge9
LincolnWillow Creek Snotel9
LincolnSpring Creek Divide Snotel6
LincolnBlind Bull Summit6
Lincoln5 NNE Thayne4.1
LincolnBox Y Ranch3
LincolnSalt River Summit Snotel2
LincolnStar Valley Ranch2
Lincoln2 SE Thayne1.4
Lincoln5 SSE Smoot1
Lincoln3 SE Bedford1
Lincoln5 NNE Thayne1
Natrona8 W Red Wall7
Natrona11 WSW Casper5
NatronaCasper4 to 5
NatronaCasper Airport4.9
NatronaPowder River4
NatronaCasper Mountain4
Natrona11 ESE Casper3.7
Natrona10 WSW Casper3.7
Natrona5 SSW Casper3.5
Natrona4 NE Evansville3.5
NatronaCasper Mountain3
NatronaCasper Mountain Snotel3
Natrona2 E Evansville2
NatronaGrave Spring Snotel2
NatronaReno Hill Snotel2
ParkBeartooth Highway9
Park3 NE Sunshine8.3
ParkBeartooth Lake Snotel8
ParkKirwin Snotel8
ParkBlackwater Snotel7
ParkTimber Creek Snotel6
Park5 ESE Cody5.5
ParkMarquette Snotel5
Park26 SW Cody3.5
ParkWolverine Snotel3
ParkEvening Star Snotel3
ParkCody1 to 2
Park3 NE Clark1.2
Park4 SW Powell0.4
Park4 ENE Powell0.2
SubletteTriple Peak Snotel8
SubletteNew Fork Lake Snotel6
SubletteLoomis Park Snotel6
SubletteDaniel Fish Hatchery5
SubletteBig Sandy Opening Snotel5
SublettePocket Creek Snotel5
SubletteLarsen Creek Snotel5
SubletteGunsite Pass Snotel5
Sublette13 SE Pinedale4.8
Sublette14 NW Pinedale4.6
SubletteEast Rim Divide Snotel4
SubletteElkhart Park G.S. Snotel3
Sublette1 N Pinedale3
SubletteBoulder Rearing Station2
SubletteKendall Ranger Station Snotel2
SweetwaterRock Springs1 to 2
TetonGrand Targhee Snotel17
TetonTogwotee Pass Snotel13
TetonGrand Targhee-Chief Joseph12
TetonJackson Hole-Raymer11
TetonJackson Hole-Rendezvous Bowl11
TetonTogwotee Mountain Lodge11
Teton3 SSW Wilson10.5
Teton1 NNW Alta9
TetonGros Ventre Summit Snotel7
TetonPhillips Bench Snotel7
TetonJackson Hole-Mid6
Teton12 NE Jackson6
TetonBase Camp Snotel6
TetonJackson Dam4.5
TetonJackson Hole-Base4
TetonDarwin Ranch4
TetonSnow King4
TetonGrassy Lake Snotel4
Teton4 SW Jackson3.6
TetonSnake River Stn Snotel3
TetonGranite Creek Snotel2
WashakiePowder River Pass Snotel8
Washakie5 NNW Ten Sleep8
WashakieTen Sleep4 to 6
Washakie16 SSE Ten Sleep5.5
WashakieMiddle Powder Snotel5
Washakie8 SW Worland3.5
YellowstoneTwo Ocean Plateau Snotel10
YellowstoneParker Peak Snotel4
YellowstoneCanyon Snotel3
YellowstoneLewis Lake Divide Snotel3
YellowstoneTower Falls Ranger Station2.2
YellowstoneSylvan Road Snotel2
YellowstoneSylvan Lake Snotel2

Strongest Wind Banner
Strongest Wind Gusts 11/9 (Sunday) thru 11/11 (Tuesday)
CountyLocationWind Gust (mph)Date/Time
Park5 WNW Clark84224 PM 11/09
ParkChief Joseph HWY (Dead Indian Pass)701050 AM 11/09
Big HornGreybull Airport66124 AM 11/10
Natrona16 S Hiland64310 PM 11/09
FremontRed Canyon - HWY 2863735 PM 11/09
Park8 S Clark - HWY 12063230 PM 11/09
JohnsonBuffalo Airport60257 AM 11/10
NatronaCasper - Outer Drive591026 AM 11/09
Park8 N Meeteetse571246 AM 11/10
SweetwaterInterstate 80 - MM 14257400 AM 11/10
SweetwaterFarson55255 AM 11/10
ParkPowell Airport54115 AM 11/10
LincolnKemmerer Airport52240 AM 11/10
FremontLander Airport49243 AM 11/10
FremontRiverton Airport49433 AM 11/10
SubletteBig Piney Airport49827 PM 11/09

Many areas saw a temperature change of 46 to 56 degrees in less than 24 hours as an arctic front blasted through the state. See the table above for details at select locations.


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 Click on Image to Enlarge
Click to enlarge
Click on Image to Enlarge.

 Observed low temperatures for Tuesday night

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