Atmospheric River in the Pacific Northwest and Northern Rockies this Weekend
A Pacific storm and atmospheric river will impact the Pacific Northwest states and northern Rockies this weekend, bringing locally heavy low elevations rain and heavy high elevation snow in the mountains. By Sunday over the Interior Northwest, rain combined with snowmelt will increase the risk of flood hazards. Flood Watches are in effect.
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SYNOPSIS: A Canadian winter storm system brought significant snow to the area over the weekend and bitter cold temperatures that will continue through today. Snow began in the northwest Saturday and ended Monday, moving southeast. Some locations saw significant snowfall such as Casper, WY, which saw up to 14.5", making it their 21st biggest snowstorm since 1937. Only a few mountain Snotels also recorded that much snow this storm.
Low temperatures were mostly -15F to -25F across north and central Wyoming Tuesday morning and this morning, with wind chills as low as 40 below at times. Temperatures are only expected to get to between -5F and -20F tonight into Thursday morning with highs getting into the teens to low 20's.
Low Temperatures Tuesday Night/Wednesday Morning
(Please double check date and time of product)
549
NOUS45 KRIW 192146
PNSRIW
WYZ001>020-022>030-200936-
Public Information Statement
National Weather Service Riverton WY
236 PM MST Wed Feb 19 2025
...SNOWFALL REPORTS FEB 16TH TO FEB 19TH...
A significant long-duration winter storm brought snow to almost
every corner of Western and Central WY. Highest snowfall amounts
were across the western mountains, where more than 4 feet of snow
fell over the 4-day event. East of the Continental Divide, several
inches of snow fell, most of which occurred Tuesday afternoon and
evening. Highest amounts east of the Divide were across the northern
Bighorn Basin.
Below is a listing of snowfall reports from this event.
Location Amount Elevation
(ft.)
...Big Horn County...
14 NE Shell 11.0 in 9343
17 E Shell 9.0 in 9577
19 N Shell 8.0 in 9384
Cowley 8.0 in 4015
Deaver 6.0 in 4107
1 WNW Shell 5.0 in 4167
...Fremont County...
23 NW Dubois 18.0 in 9347
11 N Dubois 6.0 in 8666
16 NE Dubois 6.0 in 8423
15 W Fort Washakie 4.0 in 8444
6 WSW Dubois 3.0 in 9411
6 ESE Dubois 2.2 in 6668
10 NNW South Pass City 2.0 in 9659
7 NNW South Pass City 2.0 in 8936
14 SW Fort Washakie 2.0 in 10065
1 WNW Dubois 2.0 in 6955
1 NNE Jeffrey City 1.8 in 6323
1 NE Riverton 1.6 in 4950
13 SW Lander 1.0 in 8725
11 WSW Burris 1.0 in 9903
9 SSE Lander 1.0 in 5819
7 WNW Lander 1.0 in 6040
6 SW Lander 0.9 in 6043
2 W Riverton 0.5 in 5070
1 NNW Lander 0.4 in 5330
2 SSE Fort Washakie 0.3 in 5543
4 W Riverton T in 5116
...Hot Springs County...
1 WSW Lucerne 2.2 in 4432
23 WSW Hamilton Dome 2.0 in 8899
15 WSW Hamilton Dome 0.8 in 6607
2 NE Lucerne T in 4275
...Johnson County...
16 W Buffalo 6.0 in 8682
1 NNE Buffalo 3.3 in 4617
15 WSW Buffalo 3.0 in 8298
27 WNW Buffalo 3.0 in 8539
14 WNW Mayoworth 2.0 in 8052
Kaycee 2.0 in 4668
8 NNE Mayoworth 1.9 in 5058
5 SSW Buffalo 1.4 in 5295
18 WNW Buffalo 1.0 in 9857
13 SSE Buffalo 1.0 in 4814
...Lincoln County...
10 ESE Smoot 40.0 in 9378
6 ENE Smoot 21.0 in 8398
15 ESE Smoot 21.0 in 9037
16 ENE Turnerville 20.0 in 9022
10 ENE Turnerville 19.0 in 6642
2 NNW Turnerville 16.0 in 6355
2 NE Alpine 15.0 in 5698
3 SE Turnerville 14.0 in 8237
16 ENE Turnerville 13.0 in 8783
15 NNE Cokeville 12.0 in 8355
21 NE Cokeville 11.0 in 9322
8 S Smoot 11.0 in 7593
Afton 10.3 in 6255
15 ENE Cokeville 9.0 in 7903
2 SSW Fossil Butte National 3.3 in 6782
...Natrona County...
20 N Arminto 3.0 in 8585
22 SE Casper 2.0 in 8402
2 WSW Evansville 2.0 in 5102
2 S Casper 1.5 in 5511
Midwest 1.5 in 4862
1 E Casper 1.0 in 5280
5 SSW Casper 1.0 in 6257
1 NW Casper 1.0 in 5139
1 WSW Casper 0.8 in 5199
...Park County...
Pahaska 21.0 in 6687
12 SE Pahaska 12.0 in 9650
8 W East Entrance 12.0 in 8411
13 WSW Sunlight Basin 11.0 in 9378
5 NW Wapiti 10.7 in
7 NW Sunlight Basin 10.0 in 8017
16 N Pahaska 10.0 in 9326
2 WSW Cody 9.2 in 5164
1 SW Canyon 9.0 in 7865
2 WSW East Entrance 9.0 in 7354
3 WSW Cody 8.2 in 5293
14 N Sunlight Basin 8.0 in 9357
19 SW Valley 6.0 in 8491
East Entrance 6.0 in 6952
15 SE Wapiti 5.0 in 8910
6 SW Pitchfork 5.0 in 7931
1 W Garland 4.7 in 4288
7 SW Ralston 4.4 in 4763
2 NE Cody 4.3 in 4944
20 SW Pitchfork 4.0 in 9789
3 NNE Clark 4.0 in 4146
5 NNE Meeteetse 3.9 in 5516
2 SE Meeteetse 3.8 in 6065
2 ENE Ralston 3.8 in 4508
7 NNE Cody 2.9 in 4853
Tower Junction 2.8 in 6274
...Sublette County...
17 ESE Turnerville 18.0 in 8764
20 NW Calpet 10.0 in 8062
14 E Bondurant 9.0 in 8206
16 SW Dubois 8.0 in 9716
20 E Bondurant 7.0 in 7741
12 ESE Bondurant 5.0 in 7960
11 NNE Pinedale 5.0 in 9010
11 E Big Sandy 5.0 in 9062
17 WNW South Pass City 5.0 in 8883
12 N Cora 5.0 in 8413
3 W Boulder 1.0 in 6944
5 NW Daniel T in 7338
...Sweetwater County...
1 SSE Green River 2.5 in 6220
2 SSE Green River 2.5 in 6203
1 SSE Rock Springs 2.0 in 6327
1 NNW Green River 2.0 in 6097
2 W Rock Springs 0.5 in 6390
1 SSW Green River 0.1 in 6309
...Teton County...
3 NW Teton Village 55.5 in 9663
4 WNW Teton Village 49.0 in 9628
5 ENE Alta 45.5 in 8792
6 NNW Moose 44.0 in 9561
3 NW Teton Village 42.6 in 8220
6 ENE Alta 41.0 in 9260
8 W South Entrance 25.0 in 7352
5 N South Entrance 20.0 in 7875
5 W Wilson 19.0 in 8047
16 E Moran Junction 18.0 in 9188
Moose 18.0 in 6458
23 ESE Moran Junction 17.0 in 9612
South Entrance 16.0 in 7004
2 NW Teton Village 15.5 in 6596
8 NNE Moran Junction 15.0 in 7671
2 NW Wilson 14.0 in 8017
10 N Bondurant 12.0 in 6912
22 E South Entrance 10.0 in 9332
2 NNE Teton Village 9.0 in 6338
1 S Jackson 8.0 in 7804
Kelly 7.5 in 6652
3 SSW Wilson 7.0 in 6996
6 ESE Hoback Junction 7.0 in 6150
1 N Alta 7.0 in 6449
19 NE Bondurant 6.0 in 8770
2 SSW Grant Village 5.0 in 7968
Jackson 4.7 in 6256
1 N Lake 3.9 in 7895
19 NE Bondurant 0.7 in 8170
...Washakie County...
12 SE Big Trails 4.0 in 7621
18 ENE Ten Sleep 4.0 in 9449
Winchester 2.0 in 4211
6 NE Winchester 2.0 in 4157
Ten Sleep 1.2 in 4422
9 S Manderson 1.0 in 4039
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.
$$
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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