Western and Central Wyoming

Weather Forecast Office

Winter Storm continues this Morning

SYNOPSIS:

Significant snow and/or blowing snow will continue this morning for areas east of the Continental Divide as well as Sweetwater County. Improving conditions are expected by late this morning into the afternoon, as the snow becomes lighter and winds weaken.

IMPACTS:

Severely reduced visibility to near zero early Monday morning from snow and blowing snow.
As of 3 AM roads were closed in many locations. Please visit wyoroad.info for the latest road conditions.
Bitter cold with frostbite and hypothermia possible.

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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 and Forecast Snow Totals (created at 3 AM on 12/31)**

Click Image To Enlarge Winter Storm Warnings, Winter Weather Advisories are in effect through this morning.	Click Image To Enlarge Forecast Snowfall 5 AM to 5 PM Monday

**High and Low Temperature Forecasts**

Today's High Temperature Click Image To Enlarge	Tonight's Low Temperature Click Image To Enlarge

Tomorrow's High Temperature Click Image To Enlarge	Tomorrow Night's Low 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. $$

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


For more detailed Wyoming road conditions, please visit WYDOT at: wyoroad.info

Road Conditions for Surrounding States

Teton Pass - Hwy 22	Alpine Junction - U.S. Hwy 26/89/191	Jackson	Bondurant - U.S. Hwy 189

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

South Pass - Hwy 28	Salt River Pass	Buffalo - I-25/I-90 Interchange	Casper

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

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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.

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