National Weather Service United States Department of Commerce

Powerful Pacific System Impacting the West; First Significant Snow for Portions of the East

Power Pacific system will continue to bring significant impacts for Pacific Northwest into northern California the remainder of the week. Dangerous coastal affects, heavy rain, flooding, strong winds, and higher elevation mountain snow continues. Meanwhile, a storm across the east is set to bring the first accumulating snow to many higher elevations of the Catskills into the central Appalachians. Read More >

Western and Central Wyoming

Weather Forecast Office

*Final Update* Storm Summary September 14-18

Weather.gov > Western and Central Wyoming > *Final Update* Storm Summary September 14-18

Storm Summary Banner
Rainfall Totals |Strongest Winds| Monitor and Reporting

A series of cold fronts brought widespread precipitation amounts of 1 to 2 inches across the west from Monday through Thursday night.   Portions of the Star Valley and Yellowstone National Park received from 2 to over 3 inches of precipitation; the highest total of 3.07 inches was reported 5 miles north of Thayne in the Star Valley.  A strong cold frontal passage also resulted in some high winds across the area on Wednesday with an automated station 15 miles southeast of Rock Springs reporting a gust to 81 mph Wednesday afternoon. 

***** Final Update *****

 

 

Click to enlarge Click to enlarge
 Clouds parting at Jackson Hole Mountain Resort's Cody Bowl (elev. 10,450 ft.) Friday afternoon to reveal a winter wonderland in the last few days of summer.   Click to Enlarge   A 64 mph was recorded in Sinks Canyon on Wednesday morning.   Only 0.01 inches of rainfall fell Thursday afternoon in Sinks Canyon, and then the double rainbow!  Click to Enlarge


 

Banner image

 

Click on map to enlarge

  

Rain Map - Click to enlarge
Precipitation Totals from Monday, September 14th through 7 AM Friday, September 18th
County Station Name Rainfall
Big Horn Mill Creek 0.57
Big Horn Shell 0.25
Big Horn 9 NNW Shell 0.15
Big Horn Lovell 0.12
Big Horn 2 SSW Lovell 0.12
Big Horn Deaver 0.10
Big Horn Hyatt High 0.08
Big Horn Greybull 0.03
Big Horn Greybull ASOS 0.01
Fremont Raspberry 1.23
Fremont 10 WNW Dubois 0.52
Fremont Elkhorn 0.27
Fremont Dubois 0.24
Fremont Anderson Ridge 0.14
Fremont Wind River 0.11
Fremont Camp Creek 0.09
Fremont Atlantic City 0.08
Fremont Riverton 0.5 NW 0.03
Fremont 9 SSE Lander 0.03
Fremont 6 SW Lander 0.03
Fremont Burris 0.03
Fremont Jeffrey City 0.02
Fremont Riverton 0.01
Fremont Riverton ASOS 0.01
Hot Springs 9 NE Thermopolis 0.06
Johnson School House 0.10
Johnson Buffalo ASOS 0.10
Johnson 12 SSE Buffalo 0.06
Johnson 17 NNW Kaycee 0.01
Lincoln 5 NNE Thayne 3.07
Lincoln 3 NW Etna 2.92
Lincoln Star Valley Ranch 2.81
Lincoln 2 SE Thayne 2.75
Lincoln 1 S Bedford 2.28
Lincoln 5 SSE Smoot 1.98
Lincoln Afton 1.92
Lincoln 1 SW Afton 1.86
Lincoln Kelly 1.67
Lincoln Etna 1.42
Lincoln Fossil Butte 1.10
Lincoln 3 WNW Kemmerer 0.95
Lincoln 3 SE Bedford 0.94
Lincoln 5 SSE La Barge 0.39
MONTANA Soda Butte 1.12
Natrona 11 ESE Casper 0.05
Natrona 5 SSW Casper 0.03
Natrona 7 SSW Casper 0.02
Natrona 12 NE Lysite 0.02
Natrona Casper Mountain 0.01
Natrona 10 WSW Casper 0.01
Park Quadrant 2.92
Park Pahaska 1.12
Park Cabin Creek 0.90
Park Eagle 0.57
Park Crandall 0.30
Park 26 SW Cody 0.27
Park 2 WSW Cody 0.12
Park Rattlesnake Mountain 0.12
Park Cody 0.09
Park 3 NE Sunshine 0.07
Park 4 SE Cody 0.05
Park 5 ESE Cody 0.03
Park 3 NE Clark 0.03
Park Meeteetse 0.02
Park Cody 0.01
Park 2 SW Powell 0.01
Park 4 SW Powell 0.01
Park 7 SW Cody 0.01
Sublette Hoback 1.45
Sublette 15 WNW Daniel 1.35
Sublette 14 NW Pinedale 1.08
Sublette Bondurant 1.03
Sublette Daniel Fish Hatchery 1.03
Sublette Half Moon 0.95
Sublette Snider Basin 0.94
Sublette Pinedale 0.91
Sublette Pinedale 1NE 0.57
Sublette 13 SE Pinedale 0.30
Sublette Big Piney ASOS 0.24
Sublette Boulder Rearing Station 0.10
Sweetwater Rock Springs ASOS 0.33
Sweetwater 4 NNW Rock Springs 0.28
Sweetwater Green River 0.23
Sweetwater Rock Springs 0.22
Sweetwater 5 N Farson 0.19
Sweetwater Wamsutter 0.19
Sweetwater Snow Springs Creek 0.17
Sweetwater 8 NNW Rock Springs 0.15
Sweetwater 1 SE Green River 0.11
Sweetwater McKinnon 0.11
Sweetwater Buckboard Marina 0.06
Teton Bechler 2.50
Teton Jackson 2.32
Teton 12 NE Jackson 2.29
Teton 2 NE Teton Village 2.17
Teton Moose 2.17
Teton Burro Hill 2.06
Teton Coyote Meadows 2.04
Teton 5 NW Jackson 2.03
Teton 4 SW Jackson 1.96
Teton Grand Teton 1.88
Teton Jackson Dam 1.80
Teton South Park 1.69
Teton Hoback Junction 1.28
Teton 1 NNW Alta 1.24
Washakie Leigh Creek 0.25
Washakie Worland 0.24
Washakie Winchester 0.22
Washakie 27 S Ten Sleep 0.20
Washakie Worland ASOS 0.10
Washakie Ten Sleep 0.10
Washakie 2 NE Worland 0.10
Washakie 8 SW Worland 0.08
Washakie 5 NNW Ten Sleep 0.07
Washakie 16 SSE Ten Sleep 0.04
Washakie Split Rock Creek 0.03
Yellowstone Old Faithful Ranger Station 2.33
Yellowstone Snake River Ranger Station 1.82
Yellowstone Bechler River Ranger Station 1.76
Yellowstone Grebe 1.54
Yellowstone Lake Yellowstone ASOS 1.28
Yellowstone Yellowstone East Entrance 1.20
Yellowstone Tower Falls Ranger Station 0.97
Yellowstone Yellowstone Mammoth 0.67

Strongest Wind Banner

 

A cold front brought some strong winds across the area on Wednesday, September 16th.  Locations that recorded wind gusts over 45 mph are included in the following table: 

 

Wednesday September 16th Notable Wind Gusts
County Location Wind Gust (mph)
 Fremont  Red Canyon 73
 Fremont  9 SW Lander (Sinks Canyon) 64
 Fremont  3 NNW Hudson 54
 Fremont  10 W Fort Washakie 51
 Fremont  2 W South Pass City 50
 Fremont  7 SW Muddy Gap 48
 Fremont  Jeffrey City 48
 Fremont  Riverton Airport 48
 Hot Springs  Boysen Peak 51
 Hot Springs  10 S Meeteetse 47
 Johnson  25 ESE Buffalo 53
 Johnson  12 N Kaycee 50
 Lincoln  Mt. Coffin 62
 Lincoln  Kemmerer Airport 54
 Lincoln  13 W Kemmerer 48
 Lincoln  Deadman Mountain 45
 Natrona  2 SE Hiland  63
 Natrona  16 S Hiland  58
 Natrona  20 N Casper  55
 Natrona  8 S Casper  53
 Natrona  Casper Airport  51
 Natrona  Casper Outer Drive  51
 Natrona  Midwest  49
 Natrona  7 W Alcova  48
 Park  Chief Joseph Hwy  49
 Park  Hoyt Peak  48
 Park  8 N Meeteetse  46
 Sweetwater  15 SE Rock  Springs  81
 Sweetwater  I 80 - Mile Marker 184  50
 Sweetwater  I 80 - Mile Marker 157  47
 Sweetwater  McKinnon  45
 Sweetwater  5 E Rock Springs  45
 Teton  Teton Saddle  70
 Washakie  South Bighorn Mountains  48

   Banner

Monitor our Severe Weather Summary Page for current Warnings, Watches, and Advisories. What's the difference?
Current Weather Story Check the latest Weather Story graphic for an overview of the area forecast.
NWS Riverton Radar Check out what's on the radar.
Riverton | Pocatello | Cheyenne | Billings | Salt Lake City | Rapid City | Mosaic
Submit storm reports/images and keep up to date with us on Facebook!
Twitter Logo - @NWSRiverton Follow us on Twitter for additional information. The hashtags #wywx, #Wyoming, and #wxreport can be used for reporting current weather conditions, including snowfall.
Other reporting methods include eSpotter, email (cr.wxriw@noaa.gov), or by phone at 1-800-211-1448.
Check the latest Public Information Statement for the latest storm reports.
WyDoT's Webpage Monitor current road conditions by visiting the Wyoming Dept. of Transportation (WYDOT) or by calling 5-1-1.

 

 

 

 

 

 

Learn more about the National Weather Service's efforts to build a Weather-Ready Nation!
Follow us on Twitter  Follow us on Twitter
Follow us on Facebook  Follow us on Facebook
Follow us on YouTube  Follow us on YouTube
RIW RSS Feed  RIW RSS Feed

Current Hazards
Watches/Warnings
Submit Storm Report
Outlooks

Social Media
Facebook
YouTube
Twitter

Current Conditions
Precip Analysis
Observations
Snow Cover
Satellite
WY Observations
Radar

Forecasts
Severe Weather
Forecast Discussion
User Defined Forecast
Fire Weather
Activity Planner
Hourly Forecasts
Snow and Avalanche
Aviation Weather Decision Support

Hydrology
Rivers and Lakes
SnoTel Page

Weather Safety
StormReady
NOAA Weather Radio
Preparedness
SkyWarn

Climate
Climate Summaries
Annual and Water Year Climate Summaries
Previous Annual and Water Year Climate Summaries
Local Climate
Local Climate Graphs
National Climate
Local Drought
NOAA Climate Science
Spring Frost/Freeze

Additional Information
Web Cams
Text Products
Agricultural Burning