Tropical moisture continues to flow across portions of the Great Basin, desert Southwest and California. Isolated instances of flash flooding remains possible. Meanwhile, a storm and associated frontal boundary will focus showers and thunderstorms for the center of the nation. For New England, dry and breezy conditions could enhance favorable fire weather conditions. Read More >
Summary | Forecast & Snow, Wind Reports | Travel Center | Monitoring & Reporting | Safety
SYNOPSIS: A winter storm will spread moderate to heavy amounts of snow, along with windy conditions, into Western Wyoming tonight through early Monday morning. The heaviest snowfall is expected to occur Sunday night as the main system and associated cold front move across the area. Light snowfall is expected to spread east of the Divide late Sunday night and into the day Monday, as the strong cold front plows southeast across Wyoming. Much colder air is expected in the wake of this cold front Sunday night and Monday. High temperatures on Tuesday will be about 20 degrees below average, with highs generally in the teens.
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High Wind Statement |
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Winter Storm Warnings/Advisories thru 12pm Monday |
Forecast Additional Snowfall from Click Image To Enlarge |
Preliminary Snowfall and Wind Reports |
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559
NOUS45 KRIW 291743
PNSRIW
WYZ001>020-022>030-300527-
Public Information Statement
National Weather Service Riverton WY
1127 AM MDT Fri Aug 29 2025
...Rainfall Totals since Monday morning, August 25th...
Monsoonal moisture brought significant rainfall to
much of th region over the last 4 days. The wettest days
were Tuesday through Thursday, where some locations saw
ponding of water and even some minor flooding as a result
of the heavy rain. Below is a selection of precipitation
reports over 0.1 inches since Monday.
...PRECIPITATION REPORTS...
Location Amount Elevation
(ft.)
...Big Horn County...
Greybull 30 E 0.32 in 8897
...Fremont County...
South Pass City 8 W 0.84 in 8120
Riverton 2.2 WSW 0.73 in 5033
Kinnear 0.68 in 5488
RIVERTON 0.66 in 4920
Dubois 19 WSW 0.57 in 8833
RED CANYON RANCH NC LANDER 1 0.56 in 5777
Muddy Gap 7 SW 0.54 in 7379
Burroughs Creek 0.50 in 8750
Fort Washakie 10 W 0.50 in 9234
Lander 9.3 S 0.49 in 5995
Dubois 0.48 in 6955
Riverton - CWC 0.44 in 5372
1 W Riverton 0.42 in 4989
Lander 6 SW 0.41 in 6088
Lander 9 SSE 0.38 in 5818
Lander 7WNW 0.38 in 6042
Lander 5.1 SW 0.38 in 5980
Kinnear 0.37 in 5413
Riverton Airport 0.37 in 5509
Elkhorn 0.34 in 8084
5 ESE Dubois 0.33 in
Lander 4 WSW 0.33 in 5768
Fort Washakie 3.7 SE 0.33 in 5548
Hudson 3 NNW 0.31 in 5555
Lander 0.4 WNW 0.31 in 5367
Lander 5.9 SSE 0.30 in 5556
RED CANYON RANCH NC LANDER 1 0.30 in 5777
Riverton 0.30 in 4990
Lander 6 SW 0.29 in 6555
Riverton 0.27 in 4966
Lander Airport 0.25 in 5565
Riverton 0.22 in 5390
Pavillion 5.8 E 0.19 in 5322
Crowheart 0.19 in 6137
Jeffrey City 0.10 in 6442
...Johnson County...
Barnum 7 SW 0.67 in 6439
Buffalo 4.0 N 0.64 in 4685
Buffalo 1.3 ENE 0.63 in 4699
Buffalo 0.6 E 0.56 in 4696
Barnum 4 S 0.42 in 5075
Buffalo 13 SSE 0.33 in 4819
Story 8 S 0.32 in 5278
Story 10 SW 0.31 in 8580
Buffalo 2NE 0.27 in 4770
Buffalo Airport 0.20 in 4905
Kaycee 14.6 W 0.20 in
Buffalo 15 W 0.17 in 8398
Story 4 SE 0.17 in 4662
Buffalo 4 SSW 0.13 in 5262
Buffalo 18 NW 0.12 in 8604
...Lincoln County...
Afton 1.91 in 6257
Star Valley Ranch 1.0 S 1.70 in 6204
Afton 1.69 in 6248
Afton 1.39 in 6267
Alpine 5.9 S 1.28 in 5932
Thayne 1.22 in 5948
Bedford 1.8 S 1.16 in 6302
Star Valley Ranch 1.05 in 6253
Bedford 0.99 in 6279
Etna 0.93 in 5692
Etna 3.3 N 0.86 in 5989
Thayne 2SE 0.77 in 6086
Calpet 15 SW 0.72 in 6957
Smoot 5 SSE 0.51 in 7005
Cokeville 15 NE 0.31 in 8470
La Barge 5 SE 0.20 in 6529
...Natrona County...
Casper 2.0 ENE 1.21 in 5252
Casper 8 S 1.14 in 7740
Hiland 16 S 1.13 in 6379
Casper 1.2 E 0.98 in
Casper 2.3 S 0.73 in 5647
Casper 1S 0.66 in 5522
Casper 5 SSW 0.54 in 6262
Casper Airport 0.47 in 5327
Casper 7.5 W 0.45 in 5361
Casper 2 SW 0.45 in 5434
Casper 0.7 WSW 0.43 in
Casper 7.1 SW 0.32 in 5415
Casper 0.29 in 5341
...Park County...
Canyon 1 SW - YNP 1.11 in 7899
Mammoth 15 WSW 0.90 in 7899
Pahaska 3 E 0.30 in 7500
Pahaska 0.16 in 6692
Powell 0.5 WNW 0.12 in 446
Powell 4 ENE 0.11 in 4288
Crandall 0.11 in 6640
...Sublette County...
Kendall R.S. 1.20 in 7740
Cora 14.2 N 1.12 in 7740
Big Piney Airport 0.99 in 6944
Daniel 0.92 in 7341
Bondurant 2 NW 0.79 in 6726
Pinedale 1 NNW 0.67 in 7213
Boulder 0.61 in 7338
Boulder Rearing Station 0.59 in 6940
Pinedale 14 NW 0.56 in 7464
Pinedale 7 NE 0.41 in 8529
Big Piney 21 W 0.30 in 8200
Boulder 9 N 0.29 in 7350
Bondurant 0.24 in 6648
Daniel 11 N 0.22 in 7470
...Sweetwater County...
Green River 0.5 NNW 0.64 in 6185
Rock Springs 1.0 SSE 0.35 in 6330
Rock Springs 1.6 W 0.30 in
Rock Springs 7 SE 0.25 in 6750
Rock Springs Airport 0.21 in 6745
Mckinnon 0.15 in 7086
Green River 0.13 in 6160
Green River 0.10 in 6109
Rock Springs 15 SE 0.10 in 7549
...Teton County...
South Entrance 19 W - YNP 1.55 in 6399
Alta 17 N 1.45 in 6830
Snake River R.S. - YNP 0.99 in 6882
South Entrance 5 SSW - YNP 0.95 in 7020
Lake Yellowstone - YNP 0.92 in 7839
South Entrance 3 W - YNP 0.77 in 7040
Jackson 12 NE 0.68 in 6663
Jackson Hole Airport 0.67 in 6453
Jackson 0.60 in 6210
Moran Jct 7 E 0.59 in 7250
Moose 4 N 0.58 in 6729
Jackson 7.8 N 0.58 in
Alta 0.55 in 6430
Moran 0.49 in 6748
Jackson 0.3 ENE 0.39 in 6264
Wilson 1.0 SE 0.39 in 6155
Hoback 0.37 in 5928
Lake Yellowstone - YNP 0.35 in 7875
Jackson 0.32 in 6158
Old Faithful - YNP 0.23 in 7319
Jackson Dam 0.13 in 6776
...Washakie County...
Ten Sleep 12 ENE 0.14 in 8202
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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