Western and Central Wyoming

Weather Forecast Office

Saturday: Signficant Western Valley Rain & Mountain Snow with Minor Flooding Possible

SYNOPSIS:

Saturday & Saturday evening: A stronger, but warmer system is expected to impact the Cowboy State. The bulk of the precipitation is expected to impact the western and southern portions of the area. Significant mountain snow/valley rain could occur over the west and southwest with this system with rain expected up to 9000 feet. A few thunderstorms are possible Saturday afternoon and evening which could produce heavy downpours. The rainfall in the western valleys on a melting snowpack, and some frozen ground could cause localized flooding across the western valleys Saturday. Although the heaviest of the precipitation will end Saturday night, the localized flooding threat could continue over the far west into the day Sunday.

IMPACTS:

Localized flooding possible across the western Valleys Saturday & Sunday

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NWS Text Products and Forecasts

Area Forecast Discussion	Flood Watch Statement	Special Weather Statement	What's a "Watch?"
Observed Snow Totals		Weather Story	What's a "Watch?"

**Quick View of Hazards and Forecast Precipitation Totals (created at 6 AM on 4/7)**

Click Image To Enlarge â–º Flood Advisory for the Jackson Hole Valley until 1145 AM Sunday â–º Flood Watch for the Star Valley from Noon Saturday through Sunday Afternoon	Click Image To Enlarge Expected Precipitation Saturday & Saturday Night (Mainly Rainfall below 9000 feet)

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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)
322 NOUS45 KRIW 290424 PNSRIW WYZ001>020-022>030-291609- Public Information Statement National Weather Service Riverton WY 1009 PM MDT Mon Apr 28 2025 ...STORM SUMMARY... A large Spring-Time weather system slowly pushed through Wyoming from Sunday through Monday evening. This weather system had plenty of moisture in it and these rain totals certainly prove that true. Lower elevations had all rain with this weather system, while most of the mountains had mostly snow. The totals below are rain totals and liquid equivalent totals from snowfall. Generally elevations above 7000 ft saw most of this precipitation as snow and below 7000 ft as rain. ...PRECIPITATION REPORTS... Location Amount Time/Date Elevation (ft.) ...Wyoming... ...Big Horn County... Bald Mtn. 1.10 in 0900 PM 04/28 9379 Lovell 12E 1.00 in 0915 PM 04/28 3660 Bone Springs Div 0.80 in 0900 PM 04/28 9350 Hyattville 5 ENE 0.73 in 0952 PM 04/28 5669 Lovell 0.5 ESE 0.40 in 1146 AM 04/28 3829 Byron 0.34 in 0955 PM 04/28 4022 Lovell 0.33 in 1000 PM 04/28 3964 Greybull 30 E 0.30 in 0858 PM 04/28 8897 Greybull Airport 0.18 in 0953 PM 04/28 3917 Willow Creek 0.08 in 0949 PM 04/28 4299 ...Fremont County... Castle Creek 0.70 in 0800 PM 04/28 8399 Lander 6 SW 0.63 in 0915 PM 04/28 6555 RED CANYON RANCH NC LANDER 1 0.46 in 0910 PM 04/28 5777 Burroughs Creek 0.40 in 0800 PM 04/28 8750 Lander 7 NW 0.31 in 0955 PM 04/28 5797 Lander Airport 0.28 in 0953 PM 04/28 5565 Kinnear 0.28 in 1000 PM 04/28 5413 Riverton 0.17 in 0950 PM 04/28 5390 Riverton Airport 0.15 in 0953 PM 04/28 5509 Kinnear 0.15 in 0959 PM 04/28 5488 Hudson 3 NNW 0.14 in 0946 PM 04/28 5555 South Pass City 8 W 0.12 in 0950 PM 04/28 8120 Dubois 19 WSW 0.11 in 0910 PM 04/28 8833 Riverton - CWC 0.10 in 1000 PM 04/28 5372 RIVERTON 0.08 in 1000 PM 04/28 4920 1 W Riverton 0.07 in 1000 PM 04/28 4989 Riverton 0.06 in 0945 PM 04/28 4966 Shf5 Portable 0.05 in 0908 PM 04/28 8645 Crowheart 0.05 in 0945 PM 04/28 6137 Elkhorn 0.03 in 0857 PM 04/28 8084 Muddy Gap 7 SW 0.01 in 0950 PM 04/28 7379 ...Hot Springs County... Thermopolis 0.96 in 0955 PM 04/28 4425 Meeteetse 10 S 0.33 in 0942 PM 04/28 7126 Shf2 - Portable 0.28 in 0902 PM 04/28 8560 Kirby 0.21 in 1000 PM 04/28 4350 Anchor Dam 0.17 in 0930 PM 04/28 6250 ...Johnson County... Cloud Peak Reservoir 1.10 in 0800 PM 04/28 9859 Story 4 SE 0.95 in 0945 PM 04/28 4662 Bear Trap Meadow 0.90 in 0900 PM 04/28 8200 Buffalo 0.55 in 0945 PM 04/28 4370 BUFFALO 0.50 in 0930 PM 04/28 4675 Buffalo Airport 0.44 in 0953 PM 04/28 4905 Buffalo 18 NW 0.28 in 0947 PM 04/28 8604 Story 8 S 0.21 in 0915 PM 04/28 5278 Barnum 7 SW 0.19 in 0946 PM 04/28 6439 Buffalo 15 W 0.17 in 0915 PM 04/28 8398 ...Lincoln County... Salt River Summit Snotel 0.50 in 0900 PM 04/28 7760 Indian Creek Snotel 0.40 in 0900 PM 04/28 9424 Etna 0.32 in 0945 PM 04/28 5692 Kelley R.S. Snotel 0.30 in 0900 PM 04/28 8180 Thayne 0.24 in 0945 PM 04/28 5948 Afton 0.21 in 0956 PM 04/28 6257 Blind Bull Summit 0.20 in 0900 PM 04/28 8649 Afton 0.6 NW (AGRIMET) 0.14 in 0900 PM 04/28 6210 Afton 0.14 in 1000 PM 04/28 6267 B-T Portable No. 1 0.11 in 0951 PM 04/28 7385 Cottonwood Creek 0.10 in 0900 PM 04/28 7669 Cokeville 15 NE 0.06 in 0900 PM 04/28 8470 Calpet 15 SW 0.01 in 0945 PM 04/28 6957 ...Natrona County... Reno Hill Snotel 0.50 in 0900 PM 04/28 8399 Casper Mtn. 0.50 in 0900 PM 04/28 7899 Casper 8 S 0.33 in 0952 PM 04/28 7740 Casper Airport 0.23 in 0953 PM 04/28 5327 Bar Nunn 0.19 in 0959 PM 04/28 5275 Casper 0.13 in 0945 PM 04/28 5341 Hiland 16 S 0.10 in 0910 PM 04/28 6379 ...Park County... Fort Collins 1.86 in 1000 PM 04/28 5102 Cody Airport 1.83 in 0956 PM 04/28 5138 POWELL 0.85 in 0958 PM 04/28 4381 Clark 0.84 in 1000 PM 04/28 4270 Wapiti 0.73 in 0955 PM 04/28 5993 Powell 0.68 in 1000 PM 04/28 4386 Meeteetse 0.66 in 0945 PM 04/28 5749 Cody 10 WNW 0.64 in 0940 PM 04/28 8400 Cody 15 SE 0.63 in 0946 PM 04/28 5520 Sylvan Road Snotel 0.60 in 0900 PM 04/28 7120 Sylvan Pass 14 S - YNP 0.57 in 0908 PM 04/28 8649 Crandall 0.48 in 0912 PM 04/28 6640 Pahaska 3 E 0.39 in 0857 PM 04/28 7500 Mammoth 15 WSW 0.38 in 0949 PM 04/28 7899 Canyon 1 SW - YNP 0.33 in 0949 PM 04/28 7899 Shf1 - Fts Qd 0.18 in 0856 PM 04/28 5924 Pahaska 0.07 in 0900 PM 04/28 6798 ...Sublette County... Snider Basin Snotel 0.50 in 0900 PM 04/28 8060 East Rim Divide Snotel 0.50 in 0900 PM 04/28 7930 Big Sandy Opening 0.40 in 0900 PM 04/28 9080 Kendall R.S. 0.30 in 0900 PM 04/28 7740 Big Piney 21 W 0.18 in 0909 PM 04/28 8200 Triple Peak Snotel 0.10 in 0900 PM 04/28 8500 Bondurant 0.07 in 0900 PM 04/28 6648 Pinedale 7 NE 0.04 in 0926 PM 04/28 8529 Big Piney Airport T in 0953 PM 04/28 6944 ...Sweetwater County... Rock Springs 0.07 in 0959 PM 04/28 6432 Rock Springs 15 SE 0.04 in 0944 PM 04/28 7549 Rock Springs Airport 0.03 in 0954 PM 04/28 6745 ...Teton County... Two Ocean Plateau Snotel 1.30 in 0900 PM 04/28 9240 Base Camp 0.90 in 0900 PM 04/28 7029 Moran Jct 7 E 0.84 in 0952 PM 04/28 7250 Grassy Lake 0.80 in 0800 PM 04/28 7265 Moran 0.76 in 0945 PM 04/28 6748 Grand Targhee Snotel 0.70 in 0900 PM 04/28 9260 ALTA 0.66 in 0955 PM 04/28 South Entrance 19 W - YNP 0.63 in 0949 PM 04/28 6399 Gros Ventre Summit 0.60 in 0900 PM 04/28 8750 Alta Alta 17 N 0.55 in 0903 PM 04/28 6830 South Entrance 3 W - YNP 0.40 in 0945 PM 04/28 7040 South Entrance - YNP 0.36 in 0945 PM 04/28 6898 Alta 0.31 in 0945 PM 04/28 6430 B-T Portable No. 3 0.28 in 0855 PM 04/28 6000 Jackson Dam 0.28 in 0945 PM 04/28 6776 Jackson Hole - Rendezvous Bo 0.25 in 0945 PM 04/28 9634 Milepost 12 Snow Study Plot 0.24 in 0900 PM 04/28 8007 Lake Yellowstone - YNP 0.23 in 0900 PM 04/28 7875 Jackson 0.23 in 1000 PM 04/28 6158 Jackson Hole - Raymer (BTAVA 0.22 in 0945 PM 04/28 9657 Moose 4 N 0.16 in 0858 PM 04/28 6729 Jackson Hole - Mid Mtn (BTAV 0.16 in 0945 PM 04/28 8225 Jackson Hole - Base (BTAVAL) 0.16 in 0945 PM 04/28 6611 Hoback 0.14 in 0954 PM 04/28 5928 South Entrance 5 SSW - YNP 0.10 in 0945 PM 04/28 7020 Jackson 0.05 in 0945 PM 04/28 6240 Jackson Hole Airport 0.03 in 0956 PM 04/28 6453 Old Faithful - YNP 0.01 in 0915 PM 04/28 7319 ...Washakie County... Worland 10 SSE 1.07 in 0917 PM 04/28 4520 Ten Sleep 2 SE 0.73 in 0930 PM 04/28 4418 Ten Sleep 12 ENE 0.52 in 0914 PM 04/28 8202 Big Trails 15 SSW 0.48 in 0940 PM 04/28 6554 Worland 0.36 in 1000 PM 04/28 4400 Worland 1 NE 0.28 in 1000 PM 04/28 4064 Worland Airport 0.19 in 0953 PM 04/28 4190 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)

                        
322
NOUS45 KRIW 290424
PNSRIW
WYZ001>020-022>030-291609-

Public Information Statement
National Weather Service Riverton WY
1009 PM MDT Mon Apr 28 2025

...STORM SUMMARY...

A large Spring-Time weather system slowly pushed through Wyoming
from Sunday through Monday evening. This weather system had plenty
of moisture in it and these rain totals certainly prove that true.
Lower elevations had all rain with this weather system, while most
of the mountains had mostly snow. The totals below are rain totals
and liquid equivalent totals from snowfall. Generally elevations
above 7000 ft saw most of this precipitation as snow and below
7000 ft as rain.

...PRECIPITATION REPORTS...

Location                     Amount    Time/Date       Elevation (ft.)

...Wyoming...

...Big Horn County...
Bald Mtn.                    1.10 in   0900 PM 04/28   9379
Lovell 12E                   1.00 in   0915 PM 04/28   3660
Bone Springs Div             0.80 in   0900 PM 04/28   9350
Hyattville 5 ENE             0.73 in   0952 PM 04/28   5669
Lovell 0.5 ESE               0.40 in   1146 AM 04/28   3829
Byron                        0.34 in   0955 PM 04/28   4022
Lovell                       0.33 in   1000 PM 04/28   3964
Greybull 30 E                0.30 in   0858 PM 04/28   8897
Greybull Airport             0.18 in   0953 PM 04/28   3917
Willow Creek                 0.08 in   0949 PM 04/28   4299

...Fremont County...
Castle Creek                 0.70 in   0800 PM 04/28   8399
Lander 6 SW                  0.63 in   0915 PM 04/28   6555
RED CANYON RANCH NC LANDER 1 0.46 in   0910 PM 04/28   5777
Burroughs Creek              0.40 in   0800 PM 04/28   8750
Lander 7 NW                  0.31 in   0955 PM 04/28   5797
Lander Airport               0.28 in   0953 PM 04/28   5565
Kinnear                      0.28 in   1000 PM 04/28   5413
Riverton                     0.17 in   0950 PM 04/28   5390
Riverton Airport             0.15 in   0953 PM 04/28   5509
Kinnear                      0.15 in   0959 PM 04/28   5488
Hudson 3 NNW                 0.14 in   0946 PM 04/28   5555
South Pass City 8 W          0.12 in   0950 PM 04/28   8120
Dubois 19 WSW                0.11 in   0910 PM 04/28   8833
Riverton - CWC               0.10 in   1000 PM 04/28   5372
RIVERTON                     0.08 in   1000 PM 04/28   4920
1 W Riverton                 0.07 in   1000 PM 04/28   4989
Riverton                     0.06 in   0945 PM 04/28   4966
Shf5 Portable                0.05 in   0908 PM 04/28   8645
Crowheart                    0.05 in   0945 PM 04/28   6137
Elkhorn                      0.03 in   0857 PM 04/28   8084
Muddy Gap 7 SW               0.01 in   0950 PM 04/28   7379

...Hot Springs County...
Thermopolis                  0.96 in   0955 PM 04/28   4425
Meeteetse 10 S               0.33 in   0942 PM 04/28   7126
Shf2 - Portable              0.28 in   0902 PM 04/28   8560
Kirby                        0.21 in   1000 PM 04/28   4350
Anchor Dam                   0.17 in   0930 PM 04/28   6250

...Johnson County...
Cloud Peak Reservoir         1.10 in   0800 PM 04/28   9859
Story 4 SE                   0.95 in   0945 PM 04/28   4662
Bear Trap Meadow             0.90 in   0900 PM 04/28   8200
Buffalo                      0.55 in   0945 PM 04/28   4370
BUFFALO                      0.50 in   0930 PM 04/28   4675
Buffalo Airport              0.44 in   0953 PM 04/28   4905
Buffalo 18 NW                0.28 in   0947 PM 04/28   8604
Story 8 S                    0.21 in   0915 PM 04/28   5278
Barnum 7 SW                  0.19 in   0946 PM 04/28   6439
Buffalo 15 W                 0.17 in   0915 PM 04/28   8398

...Lincoln County...
Salt River Summit Snotel     0.50 in   0900 PM 04/28   7760
Indian Creek Snotel          0.40 in   0900 PM 04/28   9424
Etna                         0.32 in   0945 PM 04/28   5692
Kelley R.S. Snotel           0.30 in   0900 PM 04/28   8180
Thayne                       0.24 in   0945 PM 04/28   5948
Afton                        0.21 in   0956 PM 04/28   6257
Blind Bull Summit            0.20 in   0900 PM 04/28   8649
Afton  0.6 NW (AGRIMET)      0.14 in   0900 PM 04/28   6210
Afton                        0.14 in   1000 PM 04/28   6267
B-T Portable No. 1           0.11 in   0951 PM 04/28   7385
Cottonwood Creek             0.10 in   0900 PM 04/28   7669
Cokeville 15 NE              0.06 in   0900 PM 04/28   8470
Calpet 15 SW                 0.01 in   0945 PM 04/28   6957

...Natrona County...
Reno Hill Snotel             0.50 in   0900 PM 04/28   8399
Casper Mtn.                  0.50 in   0900 PM 04/28   7899
Casper 8 S                   0.33 in   0952 PM 04/28   7740
Casper Airport               0.23 in   0953 PM 04/28   5327
Bar Nunn                     0.19 in   0959 PM 04/28   5275
Casper                       0.13 in   0945 PM 04/28   5341
Hiland 16 S                  0.10 in   0910 PM 04/28   6379

...Park County...
Fort Collins                 1.86 in   1000 PM 04/28   5102
Cody Airport                 1.83 in   0956 PM 04/28   5138
POWELL                       0.85 in   0958 PM 04/28   4381
Clark                        0.84 in   1000 PM 04/28   4270
Wapiti                       0.73 in   0955 PM 04/28   5993
Powell                       0.68 in   1000 PM 04/28   4386
Meeteetse                    0.66 in   0945 PM 04/28   5749
Cody 10 WNW                  0.64 in   0940 PM 04/28   8400
Cody 15 SE                   0.63 in   0946 PM 04/28   5520
Sylvan Road Snotel           0.60 in   0900 PM 04/28   7120
Sylvan Pass 14 S - YNP       0.57 in   0908 PM 04/28   8649
Crandall                     0.48 in   0912 PM 04/28   6640
Pahaska 3 E                  0.39 in   0857 PM 04/28   7500
Mammoth 15 WSW               0.38 in   0949 PM 04/28   7899
Canyon 1 SW - YNP            0.33 in   0949 PM 04/28   7899
Shf1 - Fts Qd                0.18 in   0856 PM 04/28   5924
Pahaska                      0.07 in   0900 PM 04/28   6798

...Sublette County...
Snider Basin Snotel          0.50 in   0900 PM 04/28   8060
East Rim Divide Snotel       0.50 in   0900 PM 04/28   7930
Big Sandy Opening            0.40 in   0900 PM 04/28   9080
Kendall R.S.                 0.30 in   0900 PM 04/28   7740
Big Piney 21 W               0.18 in   0909 PM 04/28   8200
Triple Peak Snotel           0.10 in   0900 PM 04/28   8500
Bondurant                    0.07 in   0900 PM 04/28   6648
Pinedale 7 NE                0.04 in   0926 PM 04/28   8529
Big Piney Airport             T  in    0953 PM 04/28   6944


...Sweetwater County...
Rock Springs                 0.07 in   0959 PM 04/28   6432
Rock Springs 15 SE           0.04 in   0944 PM 04/28   7549
Rock Springs Airport         0.03 in   0954 PM 04/28   6745

...Teton County...
Two Ocean Plateau Snotel     1.30 in   0900 PM 04/28   9240
Base Camp                    0.90 in   0900 PM 04/28   7029
Moran Jct 7 E                0.84 in   0952 PM 04/28   7250
Grassy Lake                  0.80 in   0800 PM 04/28   7265
Moran                        0.76 in   0945 PM 04/28   6748
Grand Targhee Snotel         0.70 in   0900 PM 04/28   9260
ALTA                         0.66 in   0955 PM 04/28
South Entrance 19 W - YNP    0.63 in   0949 PM 04/28   6399
Gros Ventre Summit           0.60 in   0900 PM 04/28   8750                 Alta
Alta 17 N                    0.55 in   0903 PM 04/28   6830
South Entrance 3 W - YNP     0.40 in   0945 PM 04/28   7040
South Entrance - YNP         0.36 in   0945 PM 04/28   6898
Alta                         0.31 in   0945 PM 04/28   6430
B-T Portable No. 3           0.28 in   0855 PM 04/28   6000
Jackson Dam                  0.28 in   0945 PM 04/28   6776
Jackson Hole - Rendezvous Bo 0.25 in   0945 PM 04/28   9634
Milepost 12 Snow Study Plot  0.24 in   0900 PM 04/28   8007
Lake Yellowstone - YNP       0.23 in   0900 PM 04/28   7875
Jackson                      0.23 in   1000 PM 04/28   6158
Jackson Hole - Raymer (BTAVA 0.22 in   0945 PM 04/28   9657
Moose 4 N                    0.16 in   0858 PM 04/28   6729
Jackson Hole - Mid Mtn (BTAV 0.16 in   0945 PM 04/28   8225
Jackson Hole - Base (BTAVAL) 0.16 in   0945 PM 04/28   6611
Hoback                       0.14 in   0954 PM 04/28   5928
South Entrance 5 SSW - YNP   0.10 in   0945 PM 04/28   7020
Jackson                      0.05 in   0945 PM 04/28   6240
Jackson Hole Airport         0.03 in   0956 PM 04/28   6453
Old Faithful - YNP           0.01 in   0915 PM 04/28   7319

...Washakie County...
Worland 10 SSE               1.07 in   0917 PM 04/28   4520
Ten Sleep 2 SE               0.73 in   0930 PM 04/28   4418
Ten Sleep 12 ENE             0.52 in   0914 PM 04/28   8202
Big Trails 15 SSW            0.48 in   0940 PM 04/28   6554
Worland                      0.36 in   1000 PM 04/28   4400
Worland 1 NE                 0.28 in   1000 PM 04/28   4064
Worland Airport              0.19 in   0953 PM 04/28   4190

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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