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 SATURDAY: MAY 25 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 -M .0 * 24.7 25.2 98 Blind Bull Sum 8650 22.9 19.6 117 20.1 22.2 91 Cottonwood Creek 7670 4.4 4.2 105 31.0 30.7 101 East Rim Divide 7930 -M .0 * 13.8 14.5 95 Grand Targhee 9260 40.0 44.0 91 38.0 39.6 96 Granite Creek 6770 -M .0 * 20.6 22.8 90 Grassy Lake 7265 12.7 12.6 101 39.6 42.6 93 Gros Ventre Summit 8750 .6 1.1 55* -M 16.0 * Gunsight Pass 9820 7.4 8.6 86 18.6 17.8 104 Lewis Lake Divide 7850 16.4 18.6 88 40.6 40.0 102 Loomis Park 8240 .2 .0 * 18.3 21.0 87 Phillips Bench 8200 19.6 14.6 134 34.8 31.6 110 Salt River Summit 7640 -M .0 * 16.9 19.4 87 Snake River Station 6920 .0 .0 * 26.0 28.1 93 Somsen Ranch 6800 -M .0 * 24.3 20.4 119 Spring Creek Divide 9000 19.7 18.8 105 26.5 28.6 93 Thumb Divide 7980 .8 .0 * 21.3 23.0 93 Togwotee Pass 9580 18.1 22.6 80 26.1 30.0 87 Triple Peak 8500 9.5 7.0 136 30.5 31.2 98 Two Ocean Plateau 9240 26.5 28.6 93 31.9 32.8 97 Willow Creek 8080 16.4 12.6 130 41.7 41.1 101 Younts Peak 8350 .2 3.2 6 19.1 19.5 98 ----- ----- Basin Index (%) 100 97 MADISON HEADWATERS IN WYOMING Black Bear 8170 29.2 33.2 88 43.7 45.2 97 Canyon 7870 1.1 -M * 16.5 -M * Madison Plateau 7750 11.7 12.8 91 27.0 31.2 87 West Yellowstone 6700 -M .0 * 15.6 17.8 88 Whiskey Creek 6800 1.5 2.4 62 22.5 25.4 89 ----- ----- Basin Index (%) 88 91 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 19.8 21.0 94 22.4 26.4 85 Canyon 7870 1.1 -M * 16.5 -M * Evening Star 9200 16.2 21.9 74 31.8 35.1 91 Fisher Creek 9100 25.2 35.4 71 34.3 41.9 82 Monument Peak 8850 14.6 17.4 84 26.0 28.0 93 Northeast Entrance 7350 .1 .0 * 15.6 16.8 93 Parker Peak 9400 18.6 18.6 100 28.1 24.6 114 Sylvan Lake 8420 6.5 11.8 55 28.8 29.4 98 Thumb Divide 7980 .8 .0 * 21.3 23.0 93 Two Ocean Plateau 9240 26.5 28.6 93 31.9 32.8 97 White Mill 8700 17.5 21.2 83 24.2 27.8 87 Wolverine 7650 .0 .0 * 16.4 16.0 102 ----- ----- Basin Index (%) 83 93 WIND RIVER Burroughs Creek 8750 .1 -M * 14.2 -M * Castle Creek 8400 -M .0 * 10.4 12.4 84 Cold Springs 9630 .1 .0 * 15.2 14.7 103 Deer Park 9700 15.8 8.5 186 27.6 24.5 113 Hobbs Park 10100 19.2 12.0 160 24.8 19.8 125 Kirwin 9550 7.4 6.4 116 20.5 17.2 119 Little Warm 9370 1.1 .4 275* 17.9 15.8 113 South Pass 9040 9.9 6.7 148 24.1 20.7 116 St. Lawrence Alt 8620 -M -M * 15.3 -M * Togwotee Pass 9580 18.1 22.6 80 26.1 30.0 87 Townsend Creek 8700 3.7 .0 * 20.1 17.9 112 ----- ----- Basin Index (%) 133 108 BIGHORN BASIN Bald Mtn. 9380 19.2 17.0 113 20.2 21.2 95 Bear Trap Meadow 8200 -M .0 * 15.1 13.2 114 Bone Springs Div 9350 17.2 12.8 134 18.2 20.1 91 Grave Springs 8550 .7 .0 * 15.0 13.8 109 Kirwin 9550 7.4 6.4 116 20.5 17.2 119 Marquette 8760 13.3 1.0 1330 24.2 16.4 148 Middle Powder 7760 8.5 .4 2125* 16.4 15.0 109 Owl Creek 8975 -M .0 * 12.9 10.7 121 Powder River Pass 9480 3.9 3.2 122 18.6 18.1 103 Shell Creek 9580 16.2 13.6 119 20.1 18.8 107 Timber Creek 7950 3.8 .0 * 17.9 13.4 134 ----- ----- Basin Index (%) 166 112 SHOSHONE RIVER Blackwater 9780 23.2 23.2 100 28.9 29.1 99 Evening Star 9200 16.2 21.9 74 31.8 35.1 91 Marquette 8760 13.3 1.0 1330 24.2 16.4 148 Sylvan Lake 8420 6.5 11.8 55 28.8 29.4 98 Sylvan Road 7120 .0 .0 * 18.3 20.0 92 Younts Peak 8350 .2 3.2 6 19.1 19.5 98 ----- ----- Basin Index (%) 97 101 POWDER RIVER Bear Trap Meadow 8200 -M .0 * 15.1 13.2 114 Cloud Peak Reservoir 9860 17.6 12.1 145 24.5 21.2 116 Grave Springs 8550 .7 .0 * 15.0 13.8 109 Hansen Sawmill 8360 .2 .0 * 15.7 13.8 114 Middle Powder 7760 8.5 .4 2125* 16.4 15.0 109 Powder River Pass 9480 3.9 3.2 122 18.6 18.1 103 Soldier Park 8720 1.3 1.0 130 16.1 14.7 110 ----- ----- Basin Index (%) 193* 111 TONGUE RIVER Big Goose 7990 5.0 1.2 417 18.9 18.4 103 Bone Springs Div 9350 17.2 12.8 134 18.2 20.1 91 Burgess Junction 7880 7.9 4.2 188 19.6 17.8 110 Dome Lake 8880 -M 2.6 * 21.0 20.4 103 Little Goose 8870 9.7 4.6 211 22.2 19.6 113 Sucker Creek 8880 9.5 4.7 202 24.3 21.4 114 Tie Creek 6870 .7 .0 * 19.0 18.0 106 ----- ----- Basin Index (%) 182 106 BELLE FOURCHE Blind Park 6890 .2 .0 * 13.1 15.6 84 Cole Canyon 5910 .0 .0 * 13.7 14.5 94 North Rapid Creek 6130 -M .0 * 13.2 13.4 99 ----- ----- Basin Index (%) * 92 CHEYENNE RIVER BASIN Blind Park 6890 .2 .0 * 13.1 15.6 84 North Rapid Creek 6130 -M .0 * 13.2 13.4 99 ----- ----- Basin Index (%) * 91 UPPER N. PLATTE Arapaho Ridge 10976 -M 15.8 * -M 28.6 * Blackhall Mtn 9839 31.1 29.1 107 43.2 40.6 106 Cinnabar Park 9707 9.9 7.8 127 28.3 29.2 97 Columbine 9167 -M .0 * 31.5 31.3 101 Divide Peak 8730 4.1 .4 1025* 30.4 26.2 116 Joe Wright 10158 18.2 16.8 108 32.6 34.0 96 Laprele Creek 8390 .0 .0 * 18.2 17.4 105 Med Bow 10512 -M -M * -M -M * Never Summer 10323 21.6 18.8 115 21.3 23.1 92 North French Creek 10153 25.7 26.0 99 35.1 36.6 96 Old Battle 9860 33.0 30.6 108 41.7 42.1 99 Rawah 9069 .7 .0 * 21.3 20.8 102 Sage Creek Basin 7850 -M .0 * 19.7 16.8 117 Sand Lake 10098 33.6 26.4 127 37.8 32.6 116 South Brush Creek 8495 .2 .0 * 16.8 19.4 87 Tower 10620 43.0 40.8 105 49.5 49.6 100 Webber Springs 9260 13.4 7.5 179 32.0 32.2 99 Whiskey Park 9020 21.8 16.7 131 36.2 36.0 101 Willow Creek Pass 9523 8.4 7.8 108 19.1 18.0 106 Zirkel 9338 3.9 2.4 162* 36.0 36.3 99 ----- ----- Basin Index (%) 116 102 SWEETWATER Deer Park 9700 15.8 8.5 186 27.6 24.5 113 Larsen Creek 9000 -M .0 * 17.5 17.0 103 South Pass 9040 9.9 6.7 148 24.1 20.7 116 ----- ----- Basin Index (%) 169 111 LOWER N. PLATTE Casper Mtn. 7920 4.1 .6 683* 23.4 19.8 118 Laprele Creek 8390 .0 .0 * 18.2 17.4 105 Reno Hill 8430 7.3 .8 912* 23.0 22.4 103 Windy Peak 7915 .1 .0 * 15.8 15.4 103 ----- ----- Basin Index (%) 821* 107 LARAMIE RIVER Brooklyn Lake 10250 16.0 12.4 129 32.1 28.4 113 Cinnabar Park 9707 9.9 7.8 127 28.3 29.2 97 Crow Creek 8335 .0 .0 * 13.3 15.1 88 Deadman Hill 10239 17.0 13.3 128 24.3 24.0 101 Rawah 9069 .7 .0 * 21.3 20.8 102 Roach 9740 4.8 6.6 73 22.3 24.4 91 Windy Peak 7915 .1 .0 * 15.8 15.4 103 ----- ----- Basin Index (%) 121 100 S. PLATTE Crow Creek 8335 .0 .0 * 13.3 15.1 88 ----- ----- Basin Index (%) * 88 LITTLE SNAKE RIVER Battle Mountain 7498 .1 .0 * 22.7 19.5 116 Divide Peak 8730 4.1 .4 1025* 30.4 26.2 116 Elk River 8739 .2 .0 * 24.3 24.4 100 Elkhead Divide 8800 4.7 -M * 28.5 -M * Little Snake River 8928 14.3 8.8 162 41.1 39.8 103 Old Battle 9860 33.0 30.6 108 41.7 42.1 99 Sage Creek Basin 7850 -M .0 * 19.7 16.8 117 Sandstone RS 8152 .2 .0 * 22.7 22.0 103 Whiskey Park 9020 21.8 16.7 131 36.2 36.0 101 ----- ----- Basin Index (%) 130* 105 UPPER GREEN RIVER Big Sandy Opening 9080 3.0 1.3 231* 18.1 17.1 106 Blind Bull Sum 8650 22.9 19.6 117 20.1 22.2 91 East Rim Divide 7930 -M .0 * 13.8 14.5 95 Elkhart Park G.S. 9400 .1 2.9 3 14.6 16.8 87 Gros Ventre Summit 8750 .6 1.1 55* -M 16.0 * Gunsight Pass 9820 7.4 8.6 86 18.6 17.8 104 Indian Creek 9425 15.8 15.4 103 24.4 25.4 96 Kendall R.S. 7740 .0 .0 * 15.6 16.3 96 Larsen Creek 9000 -M .0 * 17.5 17.0 103 Loomis Park 8240 .2 .0 * 18.3 21.0 87 New Fork Lake 8340 -M .0 * -M 14.3 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M .0 * 16.4 17.0 96 Spring Creek Divide 9000 19.7 18.8 105 26.5 28.6 93 Triple Peak 8500 9.5 7.0 136 30.5 31.2 98 ----- ----- Basin Index (%) 106* 96 LOWER GREEN RIVER Blacks Fork Jct 8869 .4 .0 * 17.8 15.4 116 Buck Pasture 9632 5.6 -M * 22.2 -M * EF Blacks Fork GS 9360 1.7 .0 * 15.0 16.6 90 Hams Fork 7840 -M .0 * 14.3 14.6 98 Henrys Fork 10182 -M -M * 18.5 -M * Hewinta 9500 -M .0 * 19.4 17.3 112 Hickerson Park 9122 -M .0 * 17.0 13.9 122 Hole-in-Rock 9168 -M .0 * 14.6 13.8 106 Indian Creek 9425 15.8 15.4 103 24.4 25.4 96 Kelley R.S. 8180 .2 .0 * 21.2 21.5 99 Spirit Lk 10235 4.7 1.9 247 23.7 20.5 116 Steel Creek Park 10158 14.5 11.7 124 23.4 21.0 111 ----- ----- Basin Index (%) 129* 106 UPPER BEAR RIVER Bear River RS 8777 .0 .0 * 17.7 15.0 118 Bug Lake 7987 .5 .0 * 26.4 21.6 122 Burts Miller Ranch 8000 .2 .0 * 14.7 9.8 150 Chalk Creek #1 9171 10.4 8.5 122 30.4 29.8 102 Giveout 6930 -M .0 * 15.3 16.5 93 Hayden Fork 9130 .0 .0 * 28.3 25.4 111 Kelley R.S. 8180 .2 .0 * 21.2 21.5 99 Lily Lake 9133 .2 .0 * 19.7 21.0 94 Monte Cristo 8932 17.1 11.3 151 34.6 30.2 115 Salt River Summit 7640 -M .0 * 16.9 19.4 87 Spring Creek Divide 9000 19.7 18.8 105 26.5 28.6 93 Trial Lake 9992 20.1 11.0 183 32.1 27.4 117 ----- ----- Basin Index (%) 138* 107 ----------------------------------------------------------------------------- -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.