Supercell over Laramie
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Wyoming Snow Precipitation Update

United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of MONDAY: APRIL 28 , 2025 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7040 11.8 11.4 104 21.9 22.2 99 Blind Bull Sum 8880 28.2 24.8 114 20.2 19.2 105 Cottonwood Creek 7710 20.4 18.5 110 30.4 27.8 109 East Rim Divide 8010 4.0 7.8 51 13.7 12.2 112 Grand Targhee 9260 42.0 47.6 88 32.2 35.8 90 Granite Creek 6770 11.5 10.4 111 19.5 20.4 96 Grassy Lake 7330 25.6 30.5 84 36.0 38.0 95 Gros Ventre Summit 8760 11.9 12.8 93 15.0 14.2 106 Gunsight Pass 9830 13.7 13.2 104 15.9 16.0 99 Lewis Lake Divide 7880 27.0 31.3 86 37.1 36.3 102 Loomis Park 8240 12.3 11.8 104 19.4 17.7 110 Phillips Bench 8160 24.4 27.6 88 28.5 28.4 100 Salt River Summit 7630 10.1 9.4 107 15.0 17.6 85 Snake River Station 6900 9.8 12.0 82 23.0 24.1 95 Somsen Ranch 6830 1.2 3.3 36 17.6 17.8 99 Spring Creek Divide 9020 28.6 25.3 113 27.2 25.2 108 Thumb Divide 7970 -M 14.8 * -M 20.5 * Togwotee Pass 9590 24.5 25.2 97 27.4 26.7 103 Triple Peak 8520 24.0 19.6 122 29.3 27.6 106 Two Ocean Plateau 9240 32.6 33.0 99 26.8 28.9 93 Willow Creek 8060 30.1 27.9 108 39.2 36.5 107 Younts Peak 8340 11.9 14.9 80 15.8 16.8 94 ----- ----- Basin Index (%) 97 100 MADISON HEADWATERS IN WYOMING Black Bear 8160 32.0 40.2 80 36.3 39.8 91 Canyon 7870 11.0 12.7 87 14.7 17.4 84 Madison Plateau 7710 20.6 23.1 89 26.5 27.2 97 West Yellowstone 6680 .4 3.1 13 13.8 15.6 88 Whiskey Creek 6790 12.8 14.8 86 22.1 22.2 100 ----- ----- Basin Index (%) 82 93 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 24.9 24.0 104 23.0 22.4 103 Canyon 7870 11.0 12.7 87 14.7 17.4 84 Evening Star 9040 27.0 27.0 100 30.7 30.9 99 Fisher Creek 9110 32.2 36.0 89 34.1 36.2 94 Monument Peak 8740 19.7 22.4 88 23.7 24.4 97 Northeast Entrance 7420 3.2 3.9 82 14.6 14.2 103 Parker Peak 9420 26.8 23.4 115 25.9 22.0 118 Sylvan Lake 8440 14.8 20.6 72 24.0 25.9 93 Thumb Divide 7970 -M 14.8 * -M 20.5 * Two Ocean Plateau 9240 32.6 33.0 99 26.8 28.9 93 White Mill 8730 26.7 25.8 103 24.2 25.0 97 Wolverine 7650 8.3 5.0 166 16.8 13.4 125 ----- ----- Basin Index (%) 97 99 WIND RIVER Burroughs Creek 8760 10.2 -M * 18.2 -M * Castle Creek 8410 1.6 1.4 114 9.8 9.4 104 Cold Springs 9640 3.9 5.2 75 10.9 11.1 98 Deer Park 9690 17.2 15.4 112 22.0 21.0 105 Hobbs Park 10080 15.0 16.2 93 17.1 15.8 108 Kirwin 9580 12.7 12.2 104 15.8 14.0 113 Little Warm 9370 9.6 9.4 102 15.1 13.0 116 South Pass 9040 14.0 15.0 93 19.2 18.0 107 St. Lawrence Alt 8610 .0 -M * 11.4 -M * Togwotee Pass 9590 24.5 25.2 97 27.4 26.7 103 Townsend Creek 8720 11.0 9.4 117 16.0 13.3 120 ----- ----- Basin Index (%) 100 108 BIGHORN BASIN Bald Mtn. 9360 22.2 20.6 108 18.6 18.2 102 Bear Trap Meadow 8200 .0 3.3 0 8.2 10.6 77 Bone Springs Div 9340 17.9 17.4 103 13.3 18.0 74 Grave Springs 8560 5.2 8.6 60 11.2 11.8 95 Kirwin 9580 12.7 12.2 104 15.8 14.0 113 Marquette 8800 9.4 8.1 116 12.9 11.6 111 Middle Powder 7760 8.7 12.1 72 9.7 11.9 82 Owl Creek 8990 .3 2.2 14 9.0 8.2 110 Powder River Pass 9480 5.5 10.6 52 12.2 15.2 80 Shell Creek 9570 14.1 16.4 86 13.7 15.6 88 Timber Creek 7910 4.9 3.3 148 10.4 9.6 108 ----- ----- Basin Index (%) 88 93 SHOSHONE RIVER Blackwater 9840 27.5 25.2 109 25.6 24.7 104 Evening Star 9040 27.0 27.0 100 30.7 30.9 99 Marquette 8800 9.4 8.1 116 12.9 11.6 111 Sylvan Lake 8440 14.8 20.6 72 24.0 25.9 93 Sylvan Road 7140 .0 6.5 0 14.8 17.9 83 Younts Peak 8340 11.9 14.9 80 15.8 16.8 94 ----- ----- Basin Index (%) 89 97 POWDER RIVER Bear Trap Meadow 8200 .0 3.3 0 8.2 10.6 77 Cloud Peak Reservoir 9830 11.4 15.8 72 14.3 16.4 87 Grave Springs 8560 5.2 8.6 60 11.2 11.8 95 Hansen Sawmill 8360 2.9 4.4 66 9.1 10.4 88 Middle Powder 7760 8.7 12.1 72 9.7 11.9 82 Powder River Pass 9480 5.5 10.6 52 12.2 15.2 80 Soldier Park 8680 .2 5.4 4 8.5 11.2 76 ----- ----- Basin Index (%) 56 84 TONGUE RIVER Big Goose 8010 7.6 8.6 88 11.5 12.5 92 Bone Springs Div 9340 17.9 17.4 103 13.3 18.0 74 Burgess Junction 7900 12.0 12.0 100 13.8 14.6 95 Dome Lake 8890 10.5 10.8 97 10.9 15.6 70 Little Goose 8560 9.2 10.8 85 14.1 15.5 91 Sucker Creek 8840 11.5 13.1 88 16.4 16.8 98 Tie Creek 7050 4.2 2.6 162 13.7 13.6 101 ----- ----- Basin Index (%) 97 88 BELLE FOURCHE Blind Park 6900 .0 1.8 0 10.5 13.2 80 Cole Canyon 5930 .0 .5 0* 10.8 11.2 96 North Rapid Creek 6150 .0 1.6 0 9.2 10.7 86 ----- ----- Basin Index (%) 0 87 CHEYENNE RIVER BASIN Blind Park 6900 .0 1.8 0 10.5 13.2 80 North Rapid Creek 6150 .0 1.6 0 9.2 10.7 86 ----- ----- Basin Index (%) 0 82 UPPER N. PLATTE Arapaho Ridge 10960 19.0 23.6 81 21.8 25.0 87 Blackhall Mtn 9830 28.9 32.0 90 33.3 33.6 99 Cinnabar Park 9670 13.5 19.9 68 23.3 25.8 90 Columbine 9170 12.4 19.5 64 28.2 28.6 99 Divide Peak 8700 9.8 17.1 57 21.0 24.6 85 Joe Wright 10140 21.2 22.5 94 29.9 29.6 101 Laprele Creek 8370 2.8 6.8 41 11.4 14.3 80 Med Bow 10500 40.9 -M * 36.2 -M * Never Summer 10300 21.2 22.0 96 18.1 19.2 94 North French Creek 10150 31.8 31.4 101 31.9 32.0 100 Old Battle 9850 29.9 35.8 84 30.7 37.5 82 Rawah 9100 4.4 7.8 56 15.4 18.8 82 Sage Creek Basin 7830 .0 1.5 0 12.8 14.4 89 Sand Lake 10080 29.1 31.1 94 29.1 28.7 101 South Brush Creek 8480 1.7 7.8 22 13.2 15.7 84 Tower 10610 41.8 46.2 90 44.5 45.0 99 Webber Springs 9250 15.7 22.0 71 24.3 28.6 85 Whiskey Park 8950 23.8 26.6 89 30.4 31.6 96 Willow Creek Pass 9520 12.9 15.3 84 14.4 15.7 92 Zirkel 9320 13.2 24.8 53 32.0 34.4 93 ----- ----- Basin Index (%) 81 93 SWEETWATER Deer Park 9690 17.2 15.4 112 22.0 21.0 105 Larsen Creek 8880 .4 4.6 9 14.0 15.6 90 South Pass 9040 14.0 15.0 93 19.2 18.0 107 ----- ----- Basin Index (%) 90 101 LOWER N. PLATTE Casper Mtn. 7940 6.9 13.2 52 13.0 17.4 75 Laprele Creek 8370 2.8 6.8 41 11.4 14.3 80 Reno Hill 8410 11.6 13.7 85 16.4 18.1 91 Windy Peak 7900 1.7 5.0 34 8.8 12.4 71 ----- ----- Basin Index (%) 59 80 LARAMIE RIVER Brooklyn Lake 10250 20.6 23.2 89 26.0 24.9 104 Cinnabar Park 9670 13.5 19.9 68 23.3 25.8 90 Crow Creek 8320 .0 .9 0 9.5 12.3 77 Deadman Hill 10240 16.3 19.6 83 19.1 20.8 92 Rawah 9100 4.4 7.8 56 15.4 18.8 82 Roach 9710 10.0 16.0 62 18.4 21.3 86 Windy Peak 7900 1.7 5.0 34 8.8 12.4 71 ----- ----- Basin Index (%) 72 88 S. PLATTE Crow Creek 8320 .0 .9 0 9.5 12.3 77 ----- ----- Basin Index (%) 0 77 LITTLE SNAKE RIVER Battle Mountain 7460 .0 .8 0* 16.5 17.3 95 Divide Peak 8700 9.8 17.1 57 21.0 24.6 85 Elk River 8710 6.6 13.0 51 21.2 22.0 96 Elkhead Divide 8780 9.0 -M * 20.6 -M * Little Snake River 8930 18.5 23.9 77 32.5 36.4 89 Old Battle 9850 29.9 35.8 84 30.7 37.5 82 Sage Creek Basin 7830 .0 1.5 0 12.8 14.4 89 Sandstone RS 8150 3.4 6.8 50 15.8 19.2 82 Whiskey Park 8950 23.8 26.6 89 30.4 31.6 96 ----- ----- Basin Index (%) 73 89 UPPER GREEN RIVER Big Sandy Opening 9100 11.9 12.6 94 13.8 14.8 93 Blind Bull Sum 8880 28.2 24.8 114 20.2 19.2 105 East Rim Divide 8010 4.0 7.8 51 13.7 12.2 112 Elkhart Park G.S. 9410 11.2 11.8 95 14.8 13.8 107 Gros Ventre Summit 8760 11.9 12.8 93 15.0 14.2 106 Gunsight Pass 9830 13.7 13.2 104 15.9 16.0 99 Indian Creek 9400 24.4 23.0 106 24.7 21.0 118 Kendall R.S. 7790 7.7 5.6 138 16.5 14.2 116 Larsen Creek 8880 .4 4.6 9 14.0 15.6 90 Loomis Park 8240 12.3 11.8 104 19.4 17.7 110 New Fork Lake 8380 5.9 6.8 87 -M 11.8 * Pocket Creek 9370 -M -M * -M -M * Snider Basin 8080 8.5 8.2 104 17.8 14.9 119 Spring Creek Divide 9020 28.6 25.3 113 27.2 25.2 108 Triple Peak 8520 24.0 19.6 122 29.3 27.6 106 ----- ----- Basin Index (%) 103 107 LOWER GREEN RIVER Blacks Fork Jct 8880 3.8 5.0 76 14.3 14.1 101 Buck Pasture 9620 8.4 -M * 19.8 -M * EF Blacks Fork GS 9360 3.3 8.2 40 13.6 13.2 103 Hams Fork 7870 2.0 4.8 42 14.5 11.8 123 Henrys Fork 10180 -M -M * 14.1 -M * Hewinta 9510 2.2 6.6 33 15.4 15.6 99 Hickerson Park 9130 .0 4.4 0 10.6 12.0 88 Hole-in-Rock 9170 .0 4.0 0 11.3 11.6 97 Indian Creek 9400 24.4 23.0 106 24.7 21.0 118 Kelley R.S. 8240 12.8 12.4 103 19.6 17.8 110 Spirit Lk 10240 9.3 12.6 74 15.9 19.4 82 Steel Creek Park 10140 15.6 16.9 92 18.4 18.3 101 ----- ----- Basin Index (%) 75 102 UPPER BEAR RIVER Bear River RS 8510 .0 1.4 0 13.7 13.8 99 Bug Lake 7980 11.2 15.5 72 20.6 19.2 107 Burts Miller Ranch 7900 .0 .0 * 12.9 8.7 148 Chalk Creek #1 9160 16.1 21.4 75 24.6 25.3 97 Giveout 6940 .0 .0 * 14.1 13.6 104 Hayden Fork 9160 3.1 10.2 30 22.3 22.6 99 Kelley R.S. 8240 12.8 12.4 103 19.6 17.8 110 Lily Lake 9130 6.2 10.2 61 15.9 17.8 89 Monte Cristo 8930 18.4 25.8 71 25.9 27.8 93 Salt River Summit 7630 10.1 9.4 107 15.0 17.6 85 Spring Creek Divide 9020 28.6 25.3 113 27.2 25.2 108 Trial Lake 9970 20.7 23.0 90 25.7 24.4 105 ----- ----- Basin Index (%) 82 102 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Median (or Average) Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median (or Average) represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median (or Average) value for those sites on this day. The TOTAL PRECIPITATION Percent of Median (or Average) represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Median (or Average) value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1991-2020. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median or average for the day is less than 10% of the maximum median or average value for the year. * Basin - More than half of the stations for a basin with medians (or averages) report missing or invalid data The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians or averages and the resulting fraction multiplied by 100. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.