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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. 

 

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Storm Snow Totals
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Snowfall totals for this weekend's winter storm


Quick View of Expected Wednesday Temperatures and coldest possible Wind Chill Temperatures
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Recorded Tuesday Morning Lows 

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Forecast Low Temperatures on
Wednesday Morning, February 21st

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Forecast High Temperatures
on Wednesday, February 21st

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Low Temperatures Tuesday Night/Wednesday Morning 
(Please double check date and time of product)

372
NOUS45 KRIW 231841
PNSRIW
WYZ001>020-022>030-240620-

Public Information Statement
National Weather Service Riverton WY
1220 PM MDT Wed May 23 2018

...Preliminary Storm Information...

24-hour Precipitation Reports Received through 12 PM.

Location                     Amount    Time/Date       Elevation (ft.)

...Wyoming...

...Big Horn County...
1 ESE Burlington             1.55 in   0700 AM 05/23   4372
Greybull                     0.86 in   0700 AM 05/23   3793
Greybull Airport             0.64 in   0553 AM 05/23   3935
7 W Basin                    0.56 in   0800 AM 05/23   4037
30 E Greybull                0.51 in   1158 AM 05/23   8898
2 SSW Lovell                 0.49 in   0700 AM 05/23   3958
5 ENE Hyattville             0.46 in   1152 AM 05/23   5670
Deaver - Coop                0.44 in   0800 AM 05/23   4105
11 ESE Lovell                0.44 in   1115 AM 05/23   3660
Basin                        0.38 in   1115 AM 05/23   3821
9 ENE Greybull               0.34 in   0600 AM 05/23   4205
Lovell                       0.32 in   0700 AM 05/23   3848
Basin                        0.31 in   1200 PM 05/23   3897
9 NNW Shell                  0.31 in   0700 AM 05/23   5014
Lovell                       0.24 in   1159 AM 05/23   3830

...Fremont County...
8 W South Pass City          2.01 in   1150 AM 05/23   8120
19 WSW Dubois                1.03 in   1110 AM 05/23   8833
Dubois                       0.98 in   0600 AM 05/23   6955
Burris                       0.83 in   0700 AM 05/23   6120
10 W Dubois                  0.79 in   1158 AM 05/23   8432
Crowheart                    0.68 in   1200 PM 05/23   6099
6 NW Dubois                  0.67 in   1115 AM 05/23   7189
10 N Dubois                  0.66 in   1157 AM 05/23   8085
3 NNE South Pass City        0.66 in   1145 AM 05/23   8540
13 NW Lost Cabin             0.64 in   1106 AM 05/23   6110
Lander                       0.63 in   0748 AM 05/23   5394
1 W Lander                   0.63 in   0900 AM 05/23   0
14 ENE Dubois                0.61 in   1200 PM 05/23   7365
Lander Airport               0.61 in   0553 AM 05/23   5586
N Fork Popo Agie River       0.61 in   1200 PM 05/23   5760
Boysen Dam                   0.61 in   0700 AM 05/23   4760
10 W Fort Washakie           0.61 in   1201 PM 05/23   9235
7 WNW Lander                 0.61 in   0615 AM 05/23   6042
Lander                       0.60 in   0630 AM 05/23   5320
N. Fork Little Wind River    0.60 in   1130 AM 05/23   6120
Lander                       0.60 in   0900 AM 05/23   5456
7 SE Lander                  0.60 in   0600 AM 05/23   5542
10 SE Crowheart              0.58 in   1115 AM 05/23   5654
11 W Crowheart               0.58 in   1145 AM 05/23   6520
11 SSE Lander                0.57 in   1110 AM 05/23   5773
3 NNW Hudson                 0.54 in   1146 AM 05/23   5555
6 SW Lander                  0.53 in   0700 AM 05/23   6088
Atlantic City - Coop         0.52 in   0707 AM 05/23   7714
Hudson                       0.52 in   0630 AM 05/23   5090
Middle Fork Popo Agie River  0.51 in   1115 AM 05/23   6555
9 SW Lander                  0.51 in   1100 AM 05/23   7085
9 SSE Lander                 0.51 in   0715 AM 05/23   5796
7 NW Lander                  0.48 in   1152 AM 05/23   5797
Fort Washakie                0.46 in   1115 AM 05/23   5565
Boysen Reservoir             0.41 in   1130 AM 05/23   4710
Riverton                     0.35 in   0700 AM 05/23   4950
Jeffrey City                 0.25 in   0700 AM 05/23   6320
Riverton Airport             0.16 in   0553 AM 05/23   5525
2 W Riverton                 0.16 in   0700 AM 05/23   5075
7 SW Muddy Gap               0.09 in   1150 AM 05/23   7380

...Hot Springs County...
Thermopolis 9 NE             0.86 in   0700 AM 05/23   4280
Thermopolis                  0.74 in   0800 AM 05/23   4408
Thermopolis                  0.70 in   0700 AM 05/23   4396
1 NE Lucerne                 0.62 in   0700 AM 05/23   0
10 S Meeteetse               0.57 in   1142 AM 05/23   7127
Lucerne                      0.56 in   0700 AM 05/23   0
Kirby                        0.55 in   1152 AM 05/23   4350
S. Fork Owl Creek Below Anch 0.48 in   1130 AM 05/23   6120

...Johnson County...
8 S Story                    2.99 in   1115 AM 05/23   5279
18 WNW Buffalo               1.56 in   1145 AM 05/23   8580
18 NW Buffalo                1.41 in   1147 AM 05/23   8604
14 W Buffalo                 1.12 in   1115 AM 05/23   8400
20 NW Mayoworth              0.92 in   1200 PM 05/23   8180
7 SW Barnum                  0.89 in   1146 AM 05/23   6440
7 WSW Buffalo                0.84 in   1200 PM 05/23   5745
7 NW Mayoworth               0.82 in   1200 PM 05/23   5720
3 SSE Barnum                 0.60 in   1200 PM 05/23   5075
2 NW Mayoworth               0.54 in   1148 AM 05/23   5404
10 SW Kaycee                 0.54 in   1200 PM 05/23   4900
7 NE Buffalo                 0.49 in   1148 AM 05/23   4370
4 SSW Buffalo                0.37 in   0700 AM 05/23   5262
17 E Kaycee                  0.34 in   0700 AM 05/23   4433
13 SSE Buffalo               0.32 in   0500 AM 05/23   4819
Buffalo Airport              0.30 in   0553 AM 05/23   4970
Buffalo                      0.29 in   0700 AM 05/23   4626
Kaycee                       0.28 in   1157 AM 05/23   4681
Kaycee - Coop                0.27 in   0700 AM 05/23   4660
17 E Kaycee                  0.26 in   1115 AM 05/23   4362
1 E Buffalo                  0.12 in   1204 PM 05/23   4727
Linch                        0.01 in   1148 AM 05/23   4934

...Lincoln County...
5 NNE Thayne                 0.65 in   0700 AM 05/23   6377
3 NW Etna                    0.62 in   1201 PM 05/23   5676
Star Valley Ranch            0.53 in   1000 AM 05/23   6253
3 NW Etna                    0.51 in   1148 AM 05/23   5692
1 S Bedford                  0.43 in   1147 AM 05/23   6279
Etna                         0.41 in   1202 PM 05/23   5823
2 SE Thayne                  0.41 in   0700 AM 05/23   6086
Thayne                       0.40 in   1207 PM 05/23   5928
1 NW Afton                   0.35 in   1100 AM 05/23   6211
Cokeville                    0.35 in   1147 AM 05/23   6191
Afton                        0.35 in   0700 AM 05/23   6234
15 NE Cokeville              0.32 in   1200 PM 05/23   8470
Afton                        0.31 in   1156 AM 05/23   6267
Smiths Fork Near Border      0.29 in   1130 AM 05/23   6650
3 N Etna                     0.28 in   0700 AM 05/23   5886
Afton - Coop                 0.27 in   0800 AM 05/23   6245
Crow Creek Near Fairview     0.27 in   1145 AM 05/23   6230
5 SSE Smoot                  0.27 in   0700 AM 05/23   7005
13 E Cokeville               0.14 in   1145 AM 05/23   7460
Kemmerer                     0.02 in   1200 PM 05/23   6980
5 SSE La Barge               0.01 in   1200 PM 05/23   6530

...Natrona County...
12 NE Lysite                 0.70 in   0700 AM 05/23   6045
Midwest                      0.69 in   1146 AM 05/23   4865
Powder River                 0.48 in   0700 AM 05/23   5695
Casper Airport               0.42 in   0553 AM 05/23   5320
10 WSW Casper                0.39 in   0700 AM 05/23   5277
Bar Nunn                     0.34 in   1208 PM 05/23   5275
Casper                       0.33 in   0700 AM 05/23   5252
16 S Hiland                  0.30 in   1110 AM 05/23   6380
Casper                       0.29 in   0700 AM 05/23   5142
Casper                       0.27 in   0800 AM 05/23   5206
18 SW Casper                 0.27 in   0700 AM 05/23   5365
Mills                        0.24 in   1200 PM 05/23   5150
5 SSW Casper                 0.24 in   0700 AM 05/23   6262
Casper - N Platte River      0.23 in   1130 AM 05/23   5100
Casper                       0.23 in   0700 AM 05/23   5315
2 E Casper                   0.21 in   0800 AM 05/23   5220
1 S Casper                   0.21 in   0700 AM 05/23   5522
3 WSW Mills                  0.19 in   1207 PM 05/23   5197
1 E Casper                   0.18 in   1210 PM 05/23   5334
8 S Casper                   0.15 in   1152 AM 05/23   7740
13 S Casper                  0.14 in   1101 AM 05/23   6830
8 SE Evansville              0.13 in   1115 AM 05/23   5592
Casper - Coop                0.11 in   0700 AM 05/23   5180
Independence Rock            0.11 in   1145 AM 05/23   5920

...Park County...
7 SW Cody                    1.40 in   0700 AM 05/23   5419
Cody - Coop                  1.31 in   0800 AM 05/23   5085
6 SW Meeteetse               1.31 in   0700 AM 05/23   6238
2 WSW Cody                   1.27 in   1152 AM 05/23   5167
4 SE Cody                    1.20 in   0800 AM 05/23   5152
Meeteetse                    1.17 in   0800 AM 05/23   5762
Cody                         1.12 in   0700 AM 05/23   5139
1 W Clark                    1.10 in   1158 AM 05/23   4270
2 WSW Cody                   1.08 in   0630 AM 05/23   5164
Meeteetse                    1.06 in   1202 PM 05/23   5797
Cody                         1.06 in   0700 AM 05/23   5088
Buffalo Bill Reservoir       1.01 in   1145 AM 05/23   5357
Crandall                     1.01 in   1112 AM 05/23   6640
Cody                         1.00 in   0700 AM 05/23   4948
Cody Airport                 0.94 in   0556 AM 05/23   5100
2 W Pitchfork                0.94 in   1130 AM 05/23   6883
Mammoth                      0.91 in   1115 AM 05/23   6300
20 SW Cody                   0.86 in   1159 AM 05/23   5843
Cody 25.7 SW                 0.86 in   0700 AM 05/23   6008
9 E Tower Junction           0.84 in   1200 PM 05/23   7266
3 NE Clark                   0.80 in   0800 AM 05/23   4090
6 E Sunlight Basin           0.78 in   1102 AM 05/23   6228
Gardner River Nr Mammoth, Ye 0.77 in   1145 AM 05/23   5624
19 SSW Wapiti                0.74 in   1200 PM 05/23   6200
Pahaska                      0.72 in   1100 AM 05/23   6800
3 E Pahaska                  0.66 in   1157 AM 05/23   7500
4 SW Powell                  0.61 in   0700 AM 05/23   4511
15 WSW Mammoth               0.57 in   1149 AM 05/23   7900
2 N Frannie                  0.50 in   1207 PM 05/23   4275
Tower Falls                  0.50 in   1115 AM 05/23   6266
4 ENE Powell                 0.50 in   0700 AM 05/23   4288
Powell                       0.45 in   0700 AM 05/23   4410
Powell                       0.44 in   1210 PM 05/23   4386
NE Entrance Yellowstone      0.41 in   1145 AM 05/23   7360
Pahaska                      0.35 in   0700 AM 05/23   6696
1 SW Canyon                  0.30 in   1149 AM 05/23   7900
Lamar Ranger Station         0.22 in   0800 AM 05/23   6555
Hoyt Peak                    0.17 in   1130 AM 05/23   9800

...Sublette County...
2 NW Bondurant               0.44 in   1151 AM 05/23   6726
Bondurant                    0.42 in   1200 PM 05/23   6650
7 NE Pinedale                0.36 in   1126 AM 05/23   8530
21 W Big Piney               0.32 in   1209 PM 05/23   8200
Boulder Lake                 0.24 in   1200 PM 05/23   7350
Big Piney Airport            0.18 in   0553 AM 05/23   6974
13 NE Big Piney              0.13 in   0800 AM 05/23   6946
Boulder Rearing Station - Co 0.12 in   0800 AM 05/23   6940
Pinedale                     0.12 in   1200 PM 05/23   7310
10 NNW Daniel                0.12 in   1145 AM 05/23   7470
9 E Big Piney                0.11 in   1200 PM 05/23   6803
14 NW Pinedale               0.10 in   0600 AM 05/23   7469
Daniel Fish Hatchery - Coop  0.07 in   0800 AM 05/23   7335
9 NW Marbleton               0.04 in   1205 PM 05/23   7176

...Sweetwater County...
4 NE Bitter Creek            0.43 in   1200 PM 05/23   6720
15 SE Rock Springs           0.14 in   1144 AM 05/23   7550
Rock Springs                 0.10 in   0600 AM 05/23   6269
Flaming Gorge - Buckboard Ma 0.08 in   0745 AM 05/23   6080
4 NNW Rock Springs           0.06 in   0700 AM 05/23   6497
Green River                  0.05 in   0700 AM 05/23   6133
Mckinnon                     0.04 in   1149 AM 05/23   7086
Green River                  0.04 in   0600 AM 05/23   6209
Green River                  0.03 in   0630 AM 05/23   6241

...Teton County...
17 N Alta                    1.23 in   1203 PM 05/23   6830
4 W South Entrance YNP       1.13 in   1145 AM 05/23   7040
Snake River At Jackson Lake  1.11 in   1145 AM 05/23   6779
5 S Of South Entrance Ynp    1.02 in   1145 AM 05/23   7020
Lake Village                 0.92 in   1200 PM 05/23   7875
Lake Yellowstone             0.86 in   1156 AM 05/23   7835
Kelly                        0.84 in   1154 AM 05/23   6653
7 E Moran Jct                0.82 in   1152 AM 05/23   7251
South Entrance YNP           0.82 in   1145 AM 05/23   6900
Moran                        0.81 in   0800 AM 05/23   6800
4 N Moose                    0.78 in   1158 AM 05/23   6730
Moose                        0.78 in   1110 AM 05/23   6466
12 NE Jackson                0.68 in   1022 AM 05/23   6663
2 NE Wilson                  0.67 in   1201 PM 05/23   6184
Alta                         0.66 in   1145 AM 05/23   6430
Jackson                      0.65 in   1145 AM 05/23   6240
Snake River Ranger Station   0.64 in   0800 AM 05/23   6882
Moose - Coop                 0.57 in   0800 AM 05/23   6445
Jackson                      0.51 in   1205 PM 05/23   6247
2 NE Teton Village           0.48 in   0700 AM 05/23   6339
3 SSW Jackson                0.44 in   1202 PM 05/23   6158
3 SSW Wilson                 0.40 in   0800 AM 05/23   7010
Jackson - Coop               0.37 in   0900 AM 05/23   6210

...Washakie County...
16 SE Big Trails             0.98 in   1200 PM 05/23   7220
Worland                      0.84 in   1204 PM 05/23   4042
15 SSW Big Trails            0.68 in   1140 AM 05/23   6554
12 ENE Ten Sleep             0.66 in   1114 AM 05/23   8202
10 SSE Worland               0.61 in   1117 AM 05/23   4520
Worland                      0.61 in   0800 AM 05/23   4071
1 SE Ten Sleep               0.55 in   1130 AM 05/23   4419
2 NE Worland                 0.53 in   0700 AM 05/23   4089
5 NNW Ten Sleep              0.51 in   0700 AM 05/23   4768
1 NNE Worland                0.50 in   1152 AM 05/23   4065
Winchester                   0.50 in   0700 AM 05/23   4216
Worland Airport              0.48 in   0553 AM 05/23   4245
Tensleep                     0.46 in   0700 AM 05/23   4680
Ten Sleep                    0.41 in   0700 AM 05/23   4426
Worland                      0.33 in   0700 AM 05/23   4060

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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