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 THURSDAY: MAY 8 , 2025 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7040 6.9 6.6 105 23.0 23.4 98 Blind Bull Sum 8880 29.1 24.0 121 20.9 19.8 106 Cottonwood Creek 7710 15.1 15.4 98 31.5 28.8 109 East Rim Divide 8010 .0 3.2 0 14.1 13.0 108 Grand Targhee 9260 41.0 46.8 88 34.3 36.6 94 Granite Creek 6770 4.4 6.8 65 20.9 21.2 99 Grassy Lake 7330 20.5 24.1 85 37.4 39.0 96 Gros Ventre Summit 8760 7.8 10.6 74 15.4 14.9 103 Gunsight Pass 9830 11.3 12.4 91 16.2 16.8 96 Lewis Lake Divide 7880 22.4 29.4 76 38.5 37.6 102 Loomis Park 8240 7.0 8.7 80 19.6 19.4 101 Phillips Bench 8160 20.3 24.5 83 29.8 29.0 103 Salt River Summit 7630 3.4 5.7 60 15.5 18.4 84 Snake River Station 6900 2.6 4.1 63 24.3 25.2 96 Somsen Ranch 6830 .0 .0 * 18.3 18.8 97 Spring Creek Divide 9020 26.2 24.2 108 27.8 26.4 105 Thumb Divide 7970 -M 9.0 * -M 21.7 * Togwotee Pass 9590 22.0 25.4 87 27.8 28.4 98 Triple Peak 8520 19.1 17.1 112 30.3 29.2 104 Two Ocean Plateau 9240 28.8 32.8 88 27.7 30.4 91 Willow Creek 8060 24.7 25.1 98 40.8 38.7 105 Younts Peak 8340 5.0 13.2 38 16.0 17.6 91 ----- ----- Basin Index (%) 88 100 MADISON HEADWATERS IN WYOMING Black Bear 8160 29.4 41.0 72 37.9 41.4 92 Canyon 7870 7.1 10.4 68 15.4 18.5 83 Madison Plateau 7710 16.3 22.4 73 27.9 28.2 99 West Yellowstone 6680 .0 .0 * 14.8 16.2 91 Whiskey Creek 6790 9.6 11.2 86 23.0 22.8 101 ----- ----- Basin Index (%) 73 94 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 25.5 24.8 103 24.0 24.0 100 Canyon 7870 7.1 10.4 68 15.4 18.5 83 Evening Star 9040 24.2 27.1 89 32.0 32.2 99 Fisher Creek 9110 32.1 35.9 89 35.3 38.3 92 Monument Peak 8740 18.3 21.8 84 25.2 26.4 95 Northeast Entrance 7420 .1 .0 * 15.7 15.0 105 Parker Peak 9420 24.8 24.3 102 27.0 23.3 116 Sylvan Lake 8440 10.3 18.2 57 24.9 27.2 92 Thumb Divide 7970 -M 9.0 * -M 21.7 * Two Ocean Plateau 9240 28.8 32.8 88 27.7 30.4 91 White Mill 8730 26.3 26.8 98 25.6 25.8 99 Wolverine 7650 2.4 .6 400* 17.7 14.2 125 ----- ----- Basin Index (%) 90 98 WIND RIVER Burroughs Creek 8760 5.6 -M * 18.5 -M * Castle Creek 8410 .0 .0 * 10.0 10.6 94 Cold Springs 9640 .2 2.3 9 11.5 11.8 97 Deer Park 9690 15.9 13.6 117 23.0 22.3 103 Hobbs Park 10080 15.6 15.8 99 18.6 17.4 107 Kirwin 9580 10.8 11.8 92 16.9 15.3 110 Little Warm 9370 6.2 7.7 81 15.4 14.4 107 South Pass 9040 12.2 12.2 100 20.4 19.2 106 St. Lawrence Alt 8610 .0 -M * 12.6 -M * Togwotee Pass 9590 22.0 25.4 87 27.8 28.4 98 Townsend Creek 8720 10.1 6.8 149 17.6 14.4 122 ----- ----- Basin Index (%) 97 105 BIGHORN BASIN Bald Mtn. 9360 24.2 20.6 117 20.3 19.6 104 Bear Trap Meadow 8200 .0 .4 0* 10.4 11.6 90 Bone Springs Div 9340 19.5 17.6 111 14.8 18.8 79 Grave Springs 8560 3.7 6.8 54 12.2 12.6 97 Kirwin 9580 10.8 11.8 92 16.9 15.3 110 Marquette 8800 9.7 7.0 139 15.2 12.8 119 Middle Powder 7760 9.0 9.2 98 11.5 12.8 90 Owl Creek 8990 .0 .8 0 10.0 8.8 114 Powder River Pass 9480 5.3 9.1 58 14.2 16.2 88 Shell Creek 9570 15.4 17.0 91 15.5 17.1 91 Timber Creek 7910 2.4 1.8 133 11.9 10.8 110 ----- ----- Basin Index (%) 98 98 SHOSHONE RIVER Blackwater 9840 27.3 26.6 103 27.0 26.4 102 Evening Star 9040 24.2 27.1 89 32.0 32.2 99 Marquette 8800 9.7 7.0 139 15.2 12.8 119 Sylvan Lake 8440 10.3 18.2 57 24.9 27.2 92 Sylvan Road 7140 .0 .2 0* 15.8 18.5 85 Younts Peak 8340 5.0 13.2 38 16.0 17.6 91 ----- ----- Basin Index (%) 83 97 POWDER RIVER Bear Trap Meadow 8200 .0 .4 0* 10.4 11.6 90 Cloud Peak Reservoir 9830 13.6 16.1 84 17.5 18.2 96 Grave Springs 8560 3.7 6.8 54 12.2 12.6 97 Hansen Sawmill 8360 3.3 2.3 143 12.3 11.7 105 Middle Powder 7760 9.0 9.2 98 11.5 12.8 90 Powder River Pass 9480 5.3 9.1 58 14.2 16.2 88 Soldier Park 8680 .1 1.2 8 10.4 11.9 87 ----- ----- Basin Index (%) 78 93 TONGUE RIVER Big Goose 8010 8.9 8.2 109 14.8 14.0 106 Bone Springs Div 9340 19.5 17.6 111 14.8 18.8 79 Burgess Junction 7900 12.6 11.3 112 15.9 15.6 102 Dome Lake 8890 11.6 11.1 105 -M 17.2 * Little Goose 8560 10.9 10.0 109 17.7 16.2 109 Sucker Creek 8840 13.0 12.2 107 19.8 18.6 106 Tie Creek 7050 1.0 1.2 83 15.9 14.6 109 ----- ----- Basin Index (%) 108 101 BELLE FOURCHE Blind Park 6900 .1 .0 * 11.8 13.9 85 Cole Canyon 5930 .0 .0 * 12.6 13.1 96 North Rapid Creek 6150 -M .0 * 10.8 11.6 93 ----- ----- Basin Index (%) * 91 CHEYENNE RIVER BASIN Blind Park 6900 .1 .0 * 11.8 13.9 85 North Rapid Creek 6150 -M .0 * 10.8 11.6 93 ----- ----- Basin Index (%) * 89 UPPER N. PLATTE Arapaho Ridge 10960 17.1 22.1 77 22.5 25.8 87 Blackhall Mtn 9830 25.2 32.8 77 34.1 36.9 92 Cinnabar Park 9670 10.7 17.3 62 24.5 27.5 89 Columbine 9170 5.6 14.0 40 28.6 29.8 96 Divide Peak 8700 4.0 13.2 30 21.8 25.3 86 Joe Wright 10140 20.1 22.2 91 31.4 31.4 100 Laprele Creek 8370 .1 3.0 3 12.1 15.5 78 Med Bow 10500 38.2 -M * 36.9 -M * Never Summer 10300 21.4 22.2 96 19.5 20.8 94 North French Creek 10150 27.9 31.6 88 32.6 34.0 96 Old Battle 9850 28.6 35.4 81 31.3 39.7 79 Rawah 9100 .5 4.2 12 16.3 20.1 81 Sage Creek Basin 7830 .0 .0 * 13.4 15.3 88 Sand Lake 10080 28.6 31.9 90 30.3 30.4 100 South Brush Creek 8480 .3 2.6 12 13.5 17.2 78 Tower 10610 39.2 47.2 83 45.4 46.1 98 Webber Springs 9250 11.7 19.6 60 25.0 30.6 82 Whiskey Park 8950 19.5 27.4 71 30.8 34.4 90 Willow Creek Pass 9520 12.2 14.7 83 15.3 16.8 91 Zirkel 9320 5.6 20.4 27 32.3 35.4 91 ----- ----- Basin Index (%) 73 90 SWEETWATER Deer Park 9690 15.9 13.6 117 23.0 22.3 103 Larsen Creek 8880 .0 .2 0* 14.1 16.4 86 South Pass 9040 12.2 12.2 100 20.4 19.2 106 ----- ----- Basin Index (%) 108 99 LOWER N. PLATTE Casper Mtn. 7940 4.9 10.4 47 14.5 18.0 81 Laprele Creek 8370 .1 3.0 3 12.1 15.5 78 Reno Hill 8410 10.3 12.9 80 17.6 20.9 84 Windy Peak 7900 .2 1.6 12 9.8 13.9 71 ----- ----- Basin Index (%) 56 79 LARAMIE RIVER Brooklyn Lake 10250 18.6 21.8 85 27.4 26.0 105 Cinnabar Park 9670 10.7 17.3 62 24.5 27.5 89 Crow Creek 8320 .1 .0 * 11.0 13.6 81 Deadman Hill 10240 13.8 19.4 71 21.1 22.1 95 Rawah 9100 .5 4.2 12 16.3 20.1 81 Roach 9710 6.4 15.7 41 19.0 22.2 86 Windy Peak 7900 .2 1.6 12 9.8 13.9 71 ----- ----- Basin Index (%) 63 89 S. PLATTE Crow Creek 8320 .1 .0 * 11.0 13.6 81 ----- ----- Basin Index (%) * 81 LITTLE SNAKE RIVER Battle Mountain 7460 .0 .0 * 17.4 17.8 98 Divide Peak 8700 4.0 13.2 30 21.8 25.3 86 Elk River 8710 .1 8.5 1 21.9 23.0 95 Elkhead Divide 8780 3.1 -M * 21.0 -M * Little Snake River 8930 13.0 20.6 63 32.9 37.6 88 Old Battle 9850 28.6 35.4 81 31.3 39.7 79 Sage Creek Basin 7830 .0 .0 * 13.4 15.3 88 Sandstone RS 8150 .2 3.2 6 16.3 20.4 80 Whiskey Park 8950 19.5 27.4 71 30.8 34.4 90 ----- ----- Basin Index (%) 60 87 UPPER GREEN RIVER Big Sandy Opening 9100 8.0 9.6 83 14.0 15.5 90 Blind Bull Sum 8880 29.1 24.0 121 20.9 19.8 106 East Rim Divide 8010 .0 3.2 0 14.1 13.0 108 Elkhart Park G.S. 9410 7.0 9.7 72 15.0 14.7 102 Gros Ventre Summit 8760 7.8 10.6 74 15.4 14.9 103 Gunsight Pass 9830 11.3 12.4 91 16.2 16.8 96 Indian Creek 9400 20.8 20.9 100 25.7 22.4 115 Kendall R.S. 7790 .2 .2 100* 16.5 15.1 109 Larsen Creek 8880 .0 .2 0* 14.1 16.4 86 Loomis Park 8240 7.0 8.7 80 19.6 19.4 101 New Fork Lake 8380 .0 3.4 0 -M 12.6 * Pocket Creek 9370 -M -M * -M -M * Snider Basin 8080 1.9 5.6 34 18.1 15.7 115 Spring Creek Divide 9020 26.2 24.2 108 27.8 26.4 105 Triple Peak 8520 19.1 17.1 112 30.3 29.2 104 ----- ----- Basin Index (%) 92 104 LOWER GREEN RIVER Blacks Fork Jct 8880 .2 .2 100* 14.6 14.6 100 Buck Pasture 9620 3.6 -M * 20.6 -M * EF Blacks Fork GS 9360 .0 5.0 0 14.8 14.2 104 Hams Fork 7870 -M .2 * 15.2 12.9 118 Henrys Fork 10180 -M -M * 14.4 -M * Hewinta 9510 .0 3.0 0 16.0 16.4 98 Hickerson Park 9130 .0 1.0 0 11.3 12.6 90 Hole-in-Rock 9170 .0 .5 0* 11.6 12.6 92 Indian Creek 9400 20.8 20.9 100 25.7 22.4 115 Kelley R.S. 8240 7.4 8.5 87 20.3 18.6 109 Spirit Lk 10240 6.1 11.7 52 16.7 20.0 84 Steel Creek Park 10140 13.8 17.2 80 19.2 19.8 97 ----- ----- Basin Index (%) 71 101 UPPER BEAR RIVER Bear River RS 8510 .0 .0 * 14.2 14.0 101 Bug Lake 7980 4.9 12.6 39 21.4 19.5 110 Burts Miller Ranch 7900 .0 .0 * 13.8 8.8 157 Chalk Creek #1 9160 10.6 20.8 51 25.6 26.4 97 Giveout 6940 .0 .0 * 14.8 14.6 101 Hayden Fork 9160 .0 5.5 0 23.0 23.6 97 Kelley R.S. 8240 7.4 8.5 87 20.3 18.6 109 Lily Lake 9130 .2 7.2 3 16.5 18.6 89 Monte Cristo 8930 14.7 20.6 71 27.5 28.2 98 Salt River Summit 7630 3.4 5.7 60 15.5 18.4 84 Spring Creek Divide 9020 26.2 24.2 108 27.8 26.4 105 Trial Lake 9970 15.9 21.2 75 26.5 25.4 104 ----- ----- Basin Index (%) 66 102 ----------------------------------------------------------------------------- -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.