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 29 , 2025 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7040 .0 .0 * 25.2 25.2 100 Blind Bull Sum 8880 23.6 17.8 133 21.8 22.8 96 Cottonwood Creek 7710 .1 1.0 10* 34.0 31.8 107 East Rim Divide 8010 .0 .0 * 14.9 14.8 101 Grand Targhee 9260 35.3 40.6 87 37.1 40.2 92 Granite Creek 6770 .0 .0 * 21.9 23.8 92 Grassy Lake 7330 3.2 8.4 38 40.4 42.9 94 Gros Ventre Summit 8760 .0 .0 * 16.3 16.1 101 Gunsight Pass 9830 3.8 7.6 50 17.7 18.1 98 Lewis Lake Divide 7880 5.8 14.6 40 40.7 40.8 100 Loomis Park 8240 .0 .0 * 20.4 21.5 95 Phillips Bench 8160 6.5 11.0 59 32.1 31.6 102 Salt River Summit 7630 .0 .0 * 16.5 20.4 81 Snake River Station 6900 .0 .0 * 26.4 28.4 93 Somsen Ranch 6830 .0 .0 * 19.6 21.0 93 Spring Creek Divide 9020 16.5 16.6 99 29.0 29.3 99 Thumb Divide 7970 -M .0 * -M 23.2 * Togwotee Pass 9590 12.9 20.8 62 30.1 30.8 98 Triple Peak 8520 3.8 3.4 112 31.7 32.0 99 Two Ocean Plateau 9240 20.1 27.6 73 31.3 33.1 95 Willow Creek 8060 8.9 8.0 111 44.4 41.4 107 Younts Peak 8340 .0 1.1 0* 17.8 19.8 90 ----- ----- Basin Index (%) 79 97 MADISON HEADWATERS IN WYOMING Black Bear 8160 16.6 29.0 57 40.9 45.4 90 Canyon 7870 .0 .0 * 16.7 20.5 81 Madison Plateau 7710 2.3 10.2 23 30.0 31.7 95 West Yellowstone 6680 .0 .0 * 16.4 18.2 90 Whiskey Creek 6790 .0 .0 * 24.2 26.0 93 ----- ----- Basin Index (%) 48* 90 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 19.9 20.0 100 26.0 26.9 97 Canyon 7870 .0 .0 * 16.7 20.5 81 Evening Star 9040 14.7 21.8 67 34.6 35.6 97 Fisher Creek 9110 21.8 31.3 70 36.8 42.0 88 Monument Peak 8740 6.6 15.7 42 26.2 28.1 93 Northeast Entrance 7420 .0 .0 * 16.9 17.2 98 Parker Peak 9420 14.4 15.8 91 30.1 25.2 119 Sylvan Lake 8440 .0 8.2 0 28.4 29.8 95 Thumb Divide 7970 -M .0 * -M 23.2 * Two Ocean Plateau 9240 20.1 27.6 73 31.3 33.1 95 White Mill 8730 16.2 19.4 84 27.0 28.7 94 Wolverine 7650 .0 .0 * 19.7 16.0 123 ----- ----- Basin Index (%) 71 97 WIND RIVER Burroughs Creek 8760 .0 -M * 19.5 -M * Castle Creek 8410 .0 .0 * 11.1 12.9 86 Cold Springs 9640 .0 .0 * 12.3 15.3 80 Deer Park 9690 3.6 6.0 60 24.8 24.8 100 Hobbs Park 10080 7.4 8.2 90 20.0 20.3 99 Kirwin 9580 .0 3.6 0 18.5 18.2 102 Little Warm 9370 .0 .0 * 16.3 16.2 101 South Pass 9040 .0 2.0 0 21.5 21.1 102 St. Lawrence Alt 8610 .0 -M * 13.5 -M * Togwotee Pass 9590 12.9 20.8 62 30.1 30.8 98 Townsend Creek 8720 .0 .0 * 19.8 18.0 110 ----- ----- Basin Index (%) 59 98 BIGHORN BASIN Bald Mtn. 9360 18.8 15.0 125 23.6 21.8 108 Bear Trap Meadow 8200 .0 .0 * 14.1 13.4 105 Bone Springs Div 9340 10.8 10.4 104 17.5 20.8 84 Grave Springs 8560 .0 .0 * 14.1 14.4 98 Kirwin 9580 .0 3.6 0 18.5 18.2 102 Marquette 8800 .0 .1 0* 17.5 16.5 106 Middle Powder 7760 .0 .0 * 14.1 15.4 92 Owl Creek 8990 .0 .0 * 12.0 11.2 107 Powder River Pass 9480 .0 .0 * 17.9 18.4 97 Shell Creek 9570 10.6 10.2 104 18.4 19.2 96 Timber Creek 7910 .1 .0 * 13.9 13.8 101 ----- ----- Basin Index (%) 103* 99 SHOSHONE RIVER Blackwater 9840 -M 22.1 * 29.4 29.6 99 Evening Star 9040 14.7 21.8 67 34.6 35.6 97 Marquette 8800 .0 .1 0* 17.5 16.5 106 Sylvan Lake 8440 .0 8.2 0 28.4 29.8 95 Sylvan Road 7140 .0 .0 * 18.1 21.0 86 Younts Peak 8340 .0 1.1 0* 17.8 19.8 90 ----- ----- Basin Index (%) 47* 96 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 14.1 13.4 105 Cloud Peak Reservoir 9830 8.0 8.6 93 21.4 21.8 98 Grave Springs 8560 .0 .0 * 14.1 14.4 98 Hansen Sawmill 8360 .0 .0 * 14.1 14.8 95 Middle Powder 7760 .0 .0 * 14.1 15.4 92 Powder River Pass 9480 .0 .0 * 17.9 18.4 97 Soldier Park 8680 .0 .2 0* 13.0 15.8 82 ----- ----- Basin Index (%) 91* 95 TONGUE RIVER Big Goose 8010 .1 .0 * 18.2 19.2 95 Bone Springs Div 9340 10.8 10.4 104 17.5 20.8 84 Burgess Junction 7900 3.4 .6 567* 19.4 17.9 108 Dome Lake 8890 .4 .1 400* -M 20.7 * Little Goose 8560 1.6 3.7 43 21.9 20.7 106 Sucker Creek 8840 6.9 2.0 345 24.3 21.6 112 Tie Creek 7050 .0 .0 * 19.0 18.9 101 ----- ----- Basin Index (%) 138* 101 BELLE FOURCHE Blind Park 6900 .1 .0 * 14.5 16.0 91 Cole Canyon 5930 .0 .0 * 15.8 15.1 105 North Rapid Creek 6150 -M .0 * 13.4 14.2 94 ----- ----- Basin Index (%) * 96 CHEYENNE RIVER BASIN Blind Park 6900 .1 .0 * 14.5 16.0 91 North Rapid Creek 6150 -M .0 * 13.4 14.2 94 ----- ----- Basin Index (%) * 92 UPPER N. PLATTE Arapaho Ridge 10960 10.2 12.4 82 24.5 28.6 86 Blackhall Mtn 9830 9.9 27.8 36 36.6 41.2 89 Cinnabar Park 9670 1.0 5.9 17 26.6 29.4 90 Columbine 9170 .0 .0 * 30.5 31.8 96 Divide Peak 8700 .0 .0 * 23.6 26.8 88 Joe Wright 10140 13.3 14.4 92 34.9 34.5 101 Laprele Creek 8370 .1 .0 * 14.2 17.6 81 Med Bow 10500 31.7 -M * 40.2 -M * Never Summer 10300 16.1 17.1 94 22.5 23.6 95 North French Creek 10150 22.2 22.9 97 36.0 36.9 98 Old Battle 9850 20.3 27.9 73 33.8 42.4 80 Rawah 9100 .0 .0 * 17.6 21.0 84 Sage Creek Basin 7830 .0 .0 * 14.1 16.9 83 Sand Lake 10080 25.6 24.2 106 33.7 33.1 102 South Brush Creek 8480 .2 .0 * 15.1 19.7 77 Tower 10610 29.2 37.4 78 48.7 50.2 97 Webber Springs 9250 .1 3.2 3 27.3 32.3 85 Whiskey Park 8950 4.1 10.6 39 32.6 36.0 91 Willow Creek Pass 9520 .4 3.2 12 16.7 18.3 91 Zirkel 9320 .0 .0 * 34.4 36.4 95 ----- ----- Basin Index (%) 74 91 SWEETWATER Deer Park 9690 3.6 6.0 60 24.8 24.8 100 Larsen Creek 8880 .2 .0 * 15.6 17.2 91 South Pass 9040 .0 2.0 0 21.5 21.1 102 ----- ----- Basin Index (%) 48 98 LOWER N. PLATTE Casper Mtn. 7940 .0 .0 * 16.5 20.8 79 Laprele Creek 8370 .1 .0 * 14.2 17.6 81 Reno Hill 8410 .1 .0 * 20.0 22.6 88 Windy Peak 7900 .2 .0 * 11.3 16.5 68 ----- ----- Basin Index (%) * 80 LARAMIE RIVER Brooklyn Lake 10250 8.7 8.8 99 30.6 28.6 107 Cinnabar Park 9670 1.0 5.9 17 26.6 29.4 90 Crow Creek 8320 .0 .0 * 12.8 16.0 80 Deadman Hill 10240 3.9 10.2 38 23.6 24.2 98 Rawah 9100 .0 .0 * 17.6 21.0 84 Roach 9710 .2 2.6 8 20.8 24.6 85 Windy Peak 7900 .2 .0 * 11.3 16.5 68 ----- ----- Basin Index (%) 51 89 S. PLATTE Crow Creek 8320 .0 .0 * 12.8 16.0 80 ----- ----- Basin Index (%) * 80 LITTLE SNAKE RIVER Battle Mountain 7460 .0 .0 * 17.9 19.8 90 Divide Peak 8700 .0 .0 * 23.6 26.8 88 Elk River 8710 .0 .0 * 23.0 24.4 94 Elkhead Divide 8780 .0 -M * 21.6 -M * Little Snake River 8930 .0 4.8 0 35.3 40.4 87 Old Battle 9850 20.3 27.9 73 33.8 42.4 80 Sage Creek Basin 7830 .0 .0 * 14.1 16.9 83 Sandstone RS 8150 .1 .0 * 17.2 22.0 78 Whiskey Park 8950 4.1 10.6 39 32.6 36.0 91 ----- ----- Basin Index (%) 57* 86 UPPER GREEN RIVER Big Sandy Opening 9100 .0 .0 * 15.9 17.4 91 Blind Bull Sum 8880 23.6 17.8 133 21.8 22.8 96 East Rim Divide 8010 .0 .0 * 14.9 14.8 101 Elkhart Park G.S. 9410 .0 .2 0* 16.1 17.4 93 Gros Ventre Summit 8760 .0 .0 * 16.3 16.1 101 Gunsight Pass 9830 3.8 7.6 50 17.7 18.1 98 Indian Creek 9400 9.4 13.0 72 26.7 25.8 103 Kendall R.S. 7790 .1 .0 * 17.4 17.0 102 Larsen Creek 8880 .2 .0 * 15.6 17.2 91 Loomis Park 8240 .0 .0 * 20.4 21.5 95 New Fork Lake 8380 .0 .0 * -M 14.8 * Pocket Creek 9370 -M -M * -M -M * Snider Basin 8080 .0 .0 * 18.8 17.9 105 Spring Creek Divide 9020 16.5 16.6 99 29.0 29.3 99 Triple Peak 8520 3.8 3.4 112 31.7 32.0 99 ----- ----- Basin Index (%) 98* 98 LOWER GREEN RIVER Blacks Fork Jct 8880 .1 .0 * 15.3 15.7 97 Buck Pasture 9620 .0 -M * 22.1 -M * EF Blacks Fork GS 9360 .1 .0 * 16.4 16.8 98 Hams Fork 7870 -M .0 * 15.8 14.8 107 Henrys Fork 10180 -M -M * 15.4 -M * Hewinta 9510 .0 .0 * 16.9 17.8 95 Hickerson Park 9130 .0 .0 * 11.8 14.4 82 Hole-in-Rock 9170 .0 .0 * 12.4 13.9 89 Indian Creek 9400 9.4 13.0 72 26.7 25.8 103 Kelley R.S. 8240 .0 .0 * 21.5 22.1 97 Spirit Lk 10240 .0 .0 * 17.6 20.6 85 Steel Creek Park 10140 4.5 10.0 45 20.2 21.1 96 ----- ----- Basin Index (%) 61* 95 UPPER BEAR RIVER Bear River RS 8510 .0 .0 * 14.7 15.2 97 Bug Lake 7980 .0 .0 * 22.0 21.8 101 Burts Miller Ranch 7900 .1 .0 * 14.5 9.8 148 Chalk Creek #1 9160 .1 4.4 2 26.8 29.8 90 Giveout 6940 -M .0 * -M 16.8 * Hayden Fork 9160 .0 .0 * 23.9 25.5 94 Kelley R.S. 8240 .0 .0 * 21.5 22.1 97 Lily Lake 9130 .0 .0 * 17.2 21.2 81 Monte Cristo 8930 .2 7.0 3 28.3 30.6 92 Salt River Summit 7630 .0 .0 * 16.5 20.4 81 Spring Creek Divide 9020 16.5 16.6 99 29.0 29.3 99 Trial Lake 9970 1.3 7.3 18 27.5 27.6 100 ----- ----- Basin Index (%) 52* 95 ----------------------------------------------------------------------------- -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.