Friday, September 12, 2014

Cold and Snow Summary for Wyoming

The following is a summary of the strong cold front that affected all of Wyoming.  While Star Valley escaped the snow, temperatures dipped to the coldest since last Spring.  Both Thayne ES and Double LL Ranch tied for the coldest valley locations with 18F Friday morning.

UPDATED: September 11th Winter Storm Summary...Now with the latest snow and low temperature reports.

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Building a Weather-Ready Nation

Winter Storm Summary Banner

A rare September snowstorm impacted areas east of the Divide Wednesday night and Thursday (9/11).  The Bighorn Mountains, Buffalo and the Cody Foothills were hardest hit from this storm.  Major tree damage and power outages occurred in Buffalo where 7 to as much as 10 inches of heavy wet snow occurred.  Here is a YouTube Video showing the aftermath of the storm in Buffalo.  This was earliest recorded snowfall for Cody with records going back to 1915 (15 years were missing).  Before this snowstorm the earliest snowfall for Cody was September 12th, 1970, when 8 inches of snow fell.  Although Buffalo has considerable missing historical data, the earliest snowfall on record occurred on September 6, 1929, when 1 inch of snow fell.  However this should be the heaviest recorded snowfall so early in the season for Buffalo.  Below are several pictures across northern and central Wyoming.
A winter wonderland in Cody - Click to enlargeDeep snow in Buffalo - Click to enlarge.
 Winter Wonderland in Cody
(photo courtsey of 
Gretchen Papka)
Deep Snow at French Creek near Buffalo
(photo courtsey of Julie Smith)
Tree damage in Buffalo - Click to enlargePowder River Pass in a snow storm - Click to enlarge
Tree Damage in Buffalo
(photo courtsey of Chris Hattings)
  Slick and hazardous travel over Powder River Pass in the Bighorn Mountains
(photo courtsey of Peggy Peterson)
Snow on Casper Mountain - Click to enlarge. First snowman of winter 2014-2015 (summer 2014) in Sheridan - Click to enlarge
 Snow on Casper Mountain
(photo courtsey of 
Hogadon Trails Center)
  First snowman of winter 2014-2015 (summer 2014)
in Sheridan
(photo courtsey of Jami Mclean)

Banner image

 See all the latest snowfall reports here.

Snow Map - Click to enlarge

Snowfall Totals
Big HornShell Creek Snotel16
Big HornBone Springs Divide Snotel10
Big HornBald Mountain Snotel7
FremontCastle Creek Snotel2
FremontSt. Lawrence Alt Snotel2
FremontLittle Warm Snotel1
FremontSouth Pass Snotel1
Fremont15 SW Lander1
FremontRiverton Airport0.3
Hot SpringsOwl Creek Snotel2
JohnsonLittle Goose Snotel20
JohnsonCloud Peak Reservoir Snotel13
JohnsonSoldier Park Snotel12
JohnsonHansen Sawmill Snotel11
JohnsonBuffalo7 to 10
JohnsonBear Trap Meadow Snotel3
Johnson17 NNW Kaycee5
NatronaCasper Mountain4.3
NatronaCasper Mountain Snotel4
NatronaReno Hill Snotel4
Natrona11 ESE Casper2.8
Natrona2 S Casper2.3
Natrona4 WSW Casper1.6
Natrona10 WSW Casper1
NatronaGrave Spring Snotel1
ParkBlackwater Snotel8
Park5 E Cody7
ParkMarquette Snotel7
ParkKirwin Snotel6
ParkTimber Creek Snotel6
ParkWolverine Snotel6
ParkEvening Star Snotel6
ParkBeartooth Lake Snotel5
ParkCody3 to 5
ParkMeeteetse3 to 5
Park4 SE Cody4
Park26 SW Cody3
Park3 NE Sunshine3
ParkCrandall Creek3
Park1 NE Wapiti1
SubletteElkhart Park G.S. Snotel3
SubletteNew Fork Lake Snotel2
SubletteKendall Ranger Station Snotel1
SubletteBig Sandy Opening Snotel1
TetonGros Ventre Summit Snotel1
TetonTogwotee Pass Snotel1
WashakiePowder River Pass Snotel4
Washakie5 NNW Ten Sleep2
WashakieMiddle Powder Snotel1
YellowstoneParker Peak Snotel4
YellowstoneThumb Divide Snotel1
YellowstoneLewis Lake Divide Snotel1

Cold Temps Banner
A widespread freeze occurred across western and central Wyoming in wake of this rare mid-September snowstorm.  If the volunteer observer in Buffalo comes in with a low in the teens similar to the low at Buffalo Airport (19 degrees) it will be the earliest Buffalo has dipped into the teens since records began in 1899.  WOW! See all the latest morning low temperature reportshere.
Map of Observed Minimum Temperatures for the morning of Friday September 12th.

Low Temperatures through 12 PM 9/12


Low Temperature °F on Sept 12, 2014

Record Low °F for Sept 12th

 Period of Record

Airports (unless otherwise noted)
Big Piney1717 in 20011976 - 2014
Buffalo1934 in 19991998 - 2014
Buffalo Town??24 in 19021899 - 2014
Casper2529 in 19491939 - 2014
Greybull3032 in 19991998 - 2014
Lander3126 in 19021891 - 2014
Lake Yellowstone1825 in 20121998 - 2014
Riverton2838 in 20031997 - 2014
Riverton Town2828 in 19511907 - 2014
Rock Springs2126 in 19511948 - 2014
Worland2931 in 19741960 - 2014

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