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 WEDNESDAY: MAY 7 , 2025 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7040 7.9 7.4 107 23.0 23.4 98 Blind Bull Sum 8880 28.7 24.0 120 20.9 19.6 107 Cottonwood Creek 7710 16.1 15.4 105 31.5 28.6 110 East Rim Divide 8010 .0 4.0 0 14.1 13.0 108 Grand Targhee 9260 40.9 47.1 87 34.3 36.4 94 Granite Creek 6770 5.5 7.8 71 20.9 21.1 99 Grassy Lake 7330 21.2 25.0 85 37.5 38.8 97 Gros Ventre Summit 8760 8.6 10.8 80 15.5 14.8 105 Gunsight Pass 9830 11.8 12.0 98 16.3 16.5 99 Lewis Lake Divide 7880 23.5 29.2 80 38.6 37.4 103 Loomis Park 8240 7.7 9.4 82 19.6 19.1 103 Phillips Bench 8160 20.9 24.8 84 29.8 29.0 103 Salt River Summit 7630 4.3 6.4 67 15.3 18.2 84 Snake River Station 6900 4.0 4.7 85 24.2 25.0 97 Somsen Ranch 6830 .1 .0 * 18.4 18.6 99 Spring Creek Divide 9020 26.3 24.4 108 27.8 26.2 106 Thumb Divide 7970 -M 9.5 * -M 21.6 * Togwotee Pass 9590 22.4 25.4 88 27.8 28.2 99 Triple Peak 8520 20.0 17.3 116 30.3 29.0 104 Two Ocean Plateau 9240 29.9 32.6 92 27.7 30.4 91 Willow Creek 8060 25.2 25.2 100 40.8 38.6 106 Younts Peak 8340 6.2 13.6 46 15.9 17.6 90 ----- ----- Basin Index (%) 90 100 MADISON HEADWATERS IN WYOMING Black Bear 8160 29.7 40.9 73 37.9 41.2 92 Canyon 7870 7.8 10.5 74 15.4 18.4 84 Madison Plateau 7710 16.7 22.7 74 27.9 28.2 99 West Yellowstone 6680 .0 .0 * 14.8 16.1 92 Whiskey Creek 6790 9.9 11.6 85 23.1 22.8 101 ----- ----- Basin Index (%) 75 94 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 25.7 24.7 104 23.9 23.8 100 Canyon 7870 7.8 10.5 74 15.4 18.4 84 Evening Star 9040 25.2 27.1 93 32.0 32.2 99 Fisher Creek 9110 32.4 36.0 90 35.3 38.2 92 Monument Peak 8740 18.6 21.8 85 25.2 26.2 96 Northeast Entrance 7420 .1 .2 50* 15.7 14.8 106 Parker Peak 9420 25.6 24.2 106 26.9 23.2 116 Sylvan Lake 8440 11.6 18.2 64 24.8 27.1 92 Thumb Divide 7970 -M 9.5 * -M 21.6 * Two Ocean Plateau 9240 29.9 32.6 92 27.7 30.4 91 White Mill 8730 26.7 26.8 100 25.6 25.8 99 Wolverine 7650 3.5 1.4 250 17.7 14.0 126 ----- ----- Basin Index (%) 93 99 WIND RIVER Burroughs Creek 8760 6.3 -M * 18.5 -M * Castle Creek 8410 .0 .0 * 10.1 10.2 99 Cold Springs 9640 .6 2.3 26 11.5 11.7 98 Deer Park 9690 16.2 14.0 116 23.0 22.2 104 Hobbs Park 10080 15.8 16.0 99 18.5 17.4 106 Kirwin 9580 11.4 11.9 96 16.9 15.2 111 Little Warm 9370 6.7 8.0 84 15.4 14.2 108 South Pass 9040 12.5 12.8 98 20.3 18.6 109 St. Lawrence Alt 8610 .0 -M * 12.6 -M * Togwotee Pass 9590 22.4 25.4 88 27.8 28.2 99 Townsend Creek 8720 10.4 7.2 144 17.6 14.4 122 ----- ----- Basin Index (%) 98 106 BIGHORN BASIN Bald Mtn. 9360 23.9 20.6 116 20.3 19.1 106 Bear Trap Meadow 8200 .3 .2 150* 10.3 11.6 89 Bone Springs Div 9340 19.8 17.8 111 14.8 18.6 80 Grave Springs 8560 4.0 7.4 54 12.3 12.6 98 Kirwin 9580 11.4 11.9 96 16.9 15.2 111 Marquette 8800 10.0 7.2 139 15.1 12.8 118 Middle Powder 7760 9.3 10.0 93 11.5 12.8 90 Owl Creek 8990 .3 .4 75* 10.0 8.8 114 Powder River Pass 9480 5.6 9.2 61 14.2 15.8 90 Shell Creek 9570 15.7 16.4 96 15.5 17.0 91 Timber Creek 7910 2.8 1.7 165 11.9 10.8 110 ----- ----- Basin Index (%) 100 99 SHOSHONE RIVER Blackwater 9840 27.5 26.5 104 26.7 26.3 102 Evening Star 9040 25.2 27.1 93 32.0 32.2 99 Marquette 8800 10.0 7.2 139 15.1 12.8 118 Sylvan Lake 8440 11.6 18.2 64 24.8 27.1 92 Sylvan Road 7140 .0 .8 0* 15.7 18.4 85 Younts Peak 8340 6.2 13.6 46 15.9 17.6 90 ----- ----- Basin Index (%) 86 97 POWDER RIVER Bear Trap Meadow 8200 .3 .2 150* 10.3 11.6 89 Cloud Peak Reservoir 9830 13.9 16.1 86 17.5 17.8 98 Grave Springs 8560 4.0 7.4 54 12.3 12.6 98 Hansen Sawmill 8360 3.7 2.6 142 12.3 11.2 110 Middle Powder 7760 9.3 10.0 93 11.5 12.8 90 Powder River Pass 9480 5.6 9.2 61 14.2 15.8 90 Soldier Park 8680 .8 2.0 40 10.4 11.6 90 ----- ----- Basin Index (%) 79 95 TONGUE RIVER Big Goose 8010 9.4 8.1 116 14.7 14.0 105 Bone Springs Div 9340 19.8 17.8 111 14.8 18.6 80 Burgess Junction 7900 13.0 10.9 119 15.9 14.9 107 Dome Lake 8890 12.1 11.1 109 -M 16.3 * Little Goose 8560 11.3 10.0 113 17.7 16.2 109 Sucker Creek 8840 13.4 10.9 123 19.6 18.0 109 Tie Creek 7050 1.8 1.4 129 15.8 14.4 110 ----- ----- Basin Index (%) 115 102 BELLE FOURCHE Blind Park 6900 .1 .0 * 11.8 13.8 86 Cole Canyon 5930 .0 .0 * 12.7 12.6 101 North Rapid Creek 6150 -M .0 * 10.8 11.4 95 ----- ----- Basin Index (%) * 93 CHEYENNE RIVER BASIN Blind Park 6900 .1 .0 * 11.8 13.8 86 North Rapid Creek 6150 -M .0 * 10.8 11.4 95 ----- ----- Basin Index (%) * 90 UPPER N. PLATTE Arapaho Ridge 10960 17.2 22.3 77 22.4 25.7 87 Blackhall Mtn 9830 25.8 32.8 79 34.1 36.9 92 Cinnabar Park 9670 10.4 18.0 58 24.3 27.5 88 Columbine 9170 6.4 15.0 43 28.7 29.6 97 Divide Peak 8700 5.0 13.6 37 21.8 25.2 87 Joe Wright 10140 19.8 22.2 89 31.3 31.0 101 Laprele Creek 8370 .2 3.2 6 12.1 15.5 78 Med Bow 10500 38.1 -M * 36.9 -M * Never Summer 10300 21.1 22.2 95 19.5 20.8 94 North French Creek 10150 28.1 31.7 89 32.6 33.6 97 Old Battle 9850 28.8 35.2 82 31.3 39.2 80 Rawah 9100 1.1 4.8 23 16.2 20.1 81 Sage Creek Basin 7830 .0 .0 * 13.4 15.0 89 Sand Lake 10080 28.4 32.2 88 30.3 30.2 100 South Brush Creek 8480 .2 3.7 5 13.5 17.1 79 Tower 10610 39.7 47.6 83 45.4 45.6 100 Webber Springs 9250 12.1 19.8 61 25.0 30.2 83 Whiskey Park 8950 20.2 27.4 74 30.9 33.8 91 Willow Creek Pass 9520 12.1 15.0 81 15.3 16.7 92 Zirkel 9320 6.0 20.6 29 32.4 35.3 92 ----- ----- Basin Index (%) 73 91 SWEETWATER Deer Park 9690 16.2 14.0 116 23.0 22.2 104 Larsen Creek 8880 .0 .4 0* 14.1 16.2 87 South Pass 9040 12.5 12.8 98 20.3 18.6 109 ----- ----- Basin Index (%) 106 101 LOWER N. PLATTE Casper Mtn. 7940 5.5 10.8 51 14.4 18.0 80 Laprele Creek 8370 .2 3.2 6 12.1 15.5 78 Reno Hill 8410 10.8 13.4 81 17.6 20.0 88 Windy Peak 7900 .6 2.0 30 9.7 13.6 71 ----- ----- Basin Index (%) 58 80 LARAMIE RIVER Brooklyn Lake 10250 18.4 22.2 83 27.3 25.8 106 Cinnabar Park 9670 10.4 18.0 58 24.3 27.5 88 Crow Creek 8320 .2 .0 * 10.6 13.5 79 Deadman Hill 10240 13.2 19.0 69 20.5 22.1 93 Rawah 9100 1.1 4.8 23 16.2 20.1 81 Roach 9710 6.5 15.9 41 18.9 22.2 85 Windy Peak 7900 .6 2.0 30 9.7 13.6 71 ----- ----- Basin Index (%) 62 88 S. PLATTE Crow Creek 8320 .2 .0 * 10.6 13.5 79 ----- ----- Basin Index (%) * 79 LITTLE SNAKE RIVER Battle Mountain 7460 .0 .0 * 17.4 17.8 98 Divide Peak 8700 5.0 13.6 37 21.8 25.2 87 Elk River 8710 .6 9.4 6 21.9 23.0 95 Elkhead Divide 8780 3.8 -M * 21.0 -M * Little Snake River 8930 13.5 20.8 65 33.0 37.6 88 Old Battle 9850 28.8 35.2 82 31.3 39.2 80 Sage Creek Basin 7830 .0 .0 * 13.4 15.0 89 Sandstone RS 8150 .0 3.4 0 16.3 20.3 80 Whiskey Park 8950 20.2 27.4 74 30.9 33.8 91 ----- ----- Basin Index (%) 62 88 UPPER GREEN RIVER Big Sandy Opening 9100 8.6 9.4 91 14.0 15.2 92 Blind Bull Sum 8880 28.7 24.0 120 20.9 19.6 107 East Rim Divide 8010 .0 4.0 0 14.1 13.0 108 Elkhart Park G.S. 9410 7.6 10.0 76 15.0 14.5 103 Gros Ventre Summit 8760 8.6 10.8 80 15.5 14.8 105 Gunsight Pass 9830 11.8 12.0 98 16.3 16.5 99 Indian Creek 9400 21.5 21.2 101 25.7 22.0 117 Kendall R.S. 7790 1.4 1.1 127* 16.5 15.0 110 Larsen Creek 8880 .0 .4 0* 14.1 16.2 87 Loomis Park 8240 7.7 9.4 82 19.6 19.1 103 New Fork Lake 8380 .7 3.7 19 -M 12.4 * Pocket Creek 9370 -M -M * -M -M * Snider Basin 8080 3.1 5.8 53 18.1 15.6 116 Spring Creek Divide 9020 26.3 24.4 108 27.8 26.2 106 Triple Peak 8520 20.0 17.3 116 30.3 29.0 104 ----- ----- Basin Index (%) 95 105 LOWER GREEN RIVER Blacks Fork Jct 8880 .2 .4 50* 14.6 14.5 101 Buck Pasture 9620 4.1 -M * 20.4 -M * EF Blacks Fork GS 9360 .0 5.3 0 14.7 14.0 105 Hams Fork 7870 -M .0 * 15.2 12.8 119 Henrys Fork 10180 -M -M * 14.4 -M * Hewinta 9510 .0 3.2 0 16.0 16.3 98 Hickerson Park 9130 .0 1.4 0 11.1 12.5 89 Hole-in-Rock 9170 .0 .6 0* 11.5 12.6 91 Indian Creek 9400 21.5 21.2 101 25.7 22.0 117 Kelley R.S. 8240 8.3 8.8 94 20.3 18.3 111 Spirit Lk 10240 6.8 12.2 56 16.8 19.9 84 Steel Creek Park 10140 14.0 17.0 82 19.1 19.6 97 ----- ----- Basin Index (%) 72 102 UPPER BEAR RIVER Bear River RS 8510 .0 .0 * 14.3 13.8 104 Bug Lake 7980 5.9 12.9 46 21.4 19.5 110 Burts Miller Ranch 7900 .0 .0 * 13.8 8.8 157 Chalk Creek #1 9160 -M 21.1 * -M 26.3 * Giveout 6940 .0 .0 * 14.8 14.4 103 Hayden Fork 9160 .0 6.9 0 23.0 23.5 98 Kelley R.S. 8240 8.3 8.8 94 20.3 18.3 111 Lily Lake 9130 1.0 7.6 13 16.5 18.6 89 Monte Cristo 8930 15.2 20.9 73 27.5 28.2 98 Salt River Summit 7630 4.3 6.4 67 15.3 18.2 84 Spring Creek Divide 9020 26.3 24.4 108 27.8 26.2 106 Trial Lake 9970 16.4 21.4 77 26.4 25.2 105 ----- ----- Basin Index (%) 71 103 ----------------------------------------------------------------------------- -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.