Western and Central Wyoming

Weather Forecast Office

Winter Storm Impacting the West through Wednesday, High Wind in Central Wind Corridor

SYNOPSIS: Ongoing Light to occasional moderate snow over portions of western Wyoming is expected to continue this evening with a mix of rain and snow below 7000 feet. A strong cold front will push across Western Wyoming late tonight into early Wednesday morning with a 3 to 6 hour time frame when snowfall rates around an inch an hour could occur especially over far western Wyoming. Snow levels will also drop to valley floors with frontal passage. This strong cold front will push across the rest of the Cowboy State Wednesday bringing much colder temperatures along with some light to moderate snowfall. The winter storm comes to an end from northwest to southeast Wednesday afternoon and evening. For snowfall amounts, please check out the graphics below.

Road conditions can be found at wyoroad.info.
Please monitor JHAVALANCHE.org if your plans include travel into the back country.

IMPACTS:

	Snow causing slick road conditions across the west especially tonight and Wednesday. The rest of the area will see slick roads after frontal passage on Wednesday
	High winds from southeast Fremont County into Natrona County including the Casper area will create a blowover risk for lightweight or high-profile vehicles through Tonight.
	Cold and wet conditions could have a significant impact on young livestock especially in wake of the cold front Tonight and Wednesday.

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NWS Text Products and Forecasts

Area Forecast Discussion	Winter Weather Statement	Special Weather Statement	What's a "Watch?"
Observed Snow Totals or High Wind	High Wind Statement	Weather Story	What's a "Watch?"

**Quick View of Hazards (created at 3 PM on 1/9)**

Click Image To Enlarge Winter Weather Advisory and Winter Storm Warning across western Wyoming in effect through Noon Wednesday. High Wind Warning in effect through midnight Tonight.

Snow Forecasts


Model Forecast of Hourly Precipitation Darker Blues indicate heavier snow Click Image To Enlarge	Forecast Snowfall Tonight thru Wednesday Evening Click Image To Enlarge

Wednesday's Forecast Peak Wind Gusts
Click Image To Enlarge

**High Temperature Forecasts**

Today's High Temperature Click Image To Enlarge	Wednesday's High Temperature Click Image To Enlarge

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Snow Totals and Wind Reports will be posted and updated here once the storm occurs
(Please double check date and time of product)

                        
196
NOUS45 KRIW 191816
PNSRIW
WYZ001>020-022>030-200556-

Public Information Statement
National Weather Service Riverton WY
1156 AM MDT Tue May 19 2026

...SNOWFALL REPORTS...

A late-season winter storm impacted central and southern Wyoming the
night of May 17th through the day of May 18th. The heaviest snow
fell between about 2am and 10am MDT. The largest totals were for
upslope favored locations like the Lander Foothills, southern Casper
and Casper Mountain, as well for locations between South Pass and
Jeffrey City and south into eastern Sweetwater County, especially
for Interstate 80 east of Rock Springs. Totals of 8 inches or more
were seen in the mentioned locations, with around a foot of snow
over South Pass and around 20 inches on Casper Mountain. Reports for
Sinks Canyon Park near Lander were near 12 inches, with around 19
inches at the top of the switchbacks. Listed below are snowfall
reports from this event.

Location                     Amount     Elevation (ft.)

...Wyoming...

...Fremont County...
5 SW Lander                  16.0 in    5976
13 SW Lander                 14.0 in    8725
6 SW Lander                  13.8 in    6043
Sinks Canyon Park            12.0 in
10 NNW South Pass City       12.0 in    9659
9 S Lander                   11.4 in    5996
11 WSW Burris                11.0 in    9903
2 SSE Lander                 8.8 in     5517
14 SW Fort Washakie          8.0 in     10065
Jeffrey City                 8.0 in
4 WSW Lander                 7.0 in     5754
7 WNW Lander                 6.3 in     6040
6 WSW Dubois                 5.0 in     9411
2 NNW Lander                 5.0 in     5340
15 W Fort Washakie           3.0 in     8444
1 WNW Dubois                 3.0 in     6955
6 WNW Riverton               0.3 in     5570
2 W Riverton                 0.1 in     5070

...Hot Springs County...
18 ESE Lucerne               2.7 in     4874

...Johnson County...
8 NNE Mayoworth              1.8 in     5058
3 SSW Mayoworth              0.8 in     5477

...Lincoln County...
Afton                        1.8 in     6255
3 N Etna                     1.6 in     5927
1 SE Thayne                  1.3 in     6071
4 NNE Thayne                 1.0 in     6248
Afton                        0.2 in     6229

...Natrona County...
7 S Casper                   22.0 in    8070
12.8 SSE Milles              21.0 in
22 SE Casper                 18.0 in    8402
Southern Casper              8.0 in
1 WSW Casper                 7.0 in     5199
1 E Casper                   6.1 in     5280
5 W Mills                    3.0 in     5351
4 NW Mills                   2.5 in     5278

...Park County...
Pahaska                      3.0 in     6687

...Sublette County...
5 SE Pinedale                1.5 in     7137
1 NNW Pinedale               1.2 in     7204
3 W Boulder                  1.0 in     6944

...Sweetwater County...
1 NNW Green River            3.5 in     6097
1 SSW Green River            2.5 in     6309
2 SSE Green River            1.6 in     6203

...Teton County...
Kelly                        0.5 in     6652
3 SSW Wilson                 0.2 in     6996
1 NNE Jackson                 Trace      6226

Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers
for their dedication. Not all data listed are considered official.

$$

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Current Radar & Web Cams - Click Thumbnails To Enlarge

Northern Rockies Radar	Riverton Radar

Pocatello	Billings

Salt Lake	Cheyenne

Road Conditions and Web Cameras

Teton Pass - Hwy 22	Alpine Junction - U.S. Hwy 26/89/191	Jackson	Togwotee Mountain Lodge

Togwotee Pass - U.S. Hwy 26	Dubois	Granite Pass - U.S. Hwy 14	Powder River Pass - U.S. Hwy 16

South Pass - Hwy 28	Cody	Buffalo - I-25/I-90 Interchange	Casper Mountain

Casper	Beaver Rim - U.S. Hwy 287	I-80 - Rock Springs	I-80 - Laramie

Click Here to See All Webcams

If you plan to travel, we recommend checking road conditions along your route and staying on top of road closures here. If you are on Twitter, follow the hashtag: #WyoRoad (or look below) for the latest weather affecting roads and road conditions in and around Wyoming.

Tweets by @NWSRiverton	#WyoRoad Tweets
Get the play-by-play on this storm and contribute your own snow reports to #wywx Follow Us on Twitter @NWSRiverton	On the road? Tweet road conditions to #WyoRoad!

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