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 FRIDAY: MAY 24 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 .0 .0 * 24.7 25.1 98 Blind Bull Sum 8650 23.3 20.1 116 20.1 22.1 91 Cottonwood Creek 7670 5.3 4.9 108 31.2 30.6 102 East Rim Divide 7930 -M .0 * 13.4 14.4 93 Grand Targhee 9260 39.9 43.8 91 37.9 39.0 97 Granite Creek 6770 -M .0 * 20.2 22.8 89 Grassy Lake 7265 12.9 13.3 97 39.7 42.4 94 Gros Ventre Summit 8750 1.2 2.0 60 -M 16.0 * Gunsight Pass 9820 7.6 8.8 86 18.6 17.8 104 Lewis Lake Divide 7850 16.7 19.3 87 40.7 40.0 102 Loomis Park 8240 .2 .0 * 18.3 21.0 87 Phillips Bench 8200 19.7 15.7 125 34.8 31.5 110 Salt River Summit 7640 -M .0 * 16.3 19.4 84 Snake River Station 6920 .0 .0 * 26.0 28.0 93 Somsen Ranch 6800 -M .0 * 24.2 20.3 119 Spring Creek Divide 9000 19.8 19.0 104 26.5 28.6 93 Thumb Divide 7980 1.3 .0 * 21.3 23.0 93 Togwotee Pass 9580 18.3 23.2 79 25.9 30.0 86 Triple Peak 8500 9.8 8.0 122 30.1 31.0 97 Two Ocean Plateau 9240 26.5 28.8 92 31.8 32.8 97 Willow Creek 8080 16.3 13.5 121 41.6 40.8 102 Younts Peak 8350 .5 3.6 14 19.2 19.5 98 ----- ----- Basin Index (%) 98 97 MADISON HEADWATERS IN WYOMING Black Bear 8170 29.2 33.4 87 43.6 45.0 97 Canyon 7870 1.4 -M * 16.6 -M * Madison Plateau 7750 11.9 13.5 88 26.8 31.1 86 West Yellowstone 6700 -M .0 * 15.7 17.8 88 Whiskey Creek 6800 2.1 3.0 70 22.6 25.4 89 ----- ----- Basin Index (%) 87 91 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 19.7 21.1 93 22.4 26.2 85 Canyon 7870 1.4 -M * 16.6 -M * Evening Star 9200 16.2 21.8 74 31.7 34.9 91 Fisher Creek 9100 25.3 35.2 72 34.2 41.8 82 Monument Peak 8850 14.6 17.7 82 26.0 28.0 93 Northeast Entrance 7350 .5 .0 * 15.6 16.8 93 Parker Peak 9400 18.7 18.5 101 28.1 24.6 114 Sylvan Lake 8420 6.5 11.7 56 28.8 29.4 98 Thumb Divide 7980 1.3 .0 * 21.3 23.0 93 Two Ocean Plateau 9240 26.5 28.8 92 31.8 32.8 97 White Mill 8700 17.5 21.4 82 24.1 27.8 87 Wolverine 7650 .0 .0 * 16.4 15.9 103 ----- ----- Basin Index (%) 83 93 WIND RIVER Burroughs Creek 8750 .2 -M * 14.3 -M * Castle Creek 8400 .0 .0 * 10.5 12.2 86 Cold Springs 9630 .0 .0 * 15.3 14.6 105 Deer Park 9700 16.5 8.7 190 27.4 24.3 113 Hobbs Park 10100 19.4 11.8 164 24.6 19.6 126 Kirwin 9550 8.0 7.0 114 20.5 17.2 119 Little Warm 9370 2.0 1.2 167 17.9 15.8 113 South Pass 9040 10.9 6.9 158 24.0 20.6 117 St. Lawrence Alt 8620 -M -M * 15.3 -M * Togwotee Pass 9580 18.3 23.2 79 25.9 30.0 86 Townsend Creek 8700 4.8 .0 * 20.1 17.4 116 ----- ----- Basin Index (%) 136 108 BIGHORN BASIN Bald Mtn. 9380 19.2 17.0 113 20.2 21.1 96 Bear Trap Meadow 8200 .1 .0 * 15.0 13.2 114 Bone Springs Div 9350 17.0 13.2 129 18.0 20.0 90 Grave Springs 8550 1.1 .2 550* 15.0 13.7 109 Kirwin 9550 8.0 7.0 114 20.5 17.2 119 Marquette 8760 13.6 1.3 1046 24.2 16.3 148 Middle Powder 7760 8.7 1.0 870* 16.4 14.7 112 Owl Creek 8975 -M .0 * 12.8 10.4 123 Powder River Pass 9480 4.2 3.9 108 18.6 18.0 103 Shell Creek 9580 16.1 14.0 115 20.1 18.4 109 Timber Creek 7950 3.0 .0 * 17.9 13.2 136 ----- ----- Basin Index (%) 158 113 SHOSHONE RIVER Blackwater 9780 23.3 23.0 101 28.8 29.0 99 Evening Star 9200 16.2 21.8 74 31.7 34.9 91 Marquette 8760 13.6 1.3 1046 24.2 16.3 148 Sylvan Lake 8420 6.5 11.7 56 28.8 29.4 98 Sylvan Road 7120 .0 .0 * 18.4 19.9 92 Younts Peak 8350 .5 3.6 14 19.2 19.5 98 ----- ----- Basin Index (%) 98 101 POWDER RIVER Bear Trap Meadow 8200 .1 .0 * 15.0 13.2 114 Cloud Peak Reservoir 9860 17.6 11.4 154 24.5 20.8 118 Grave Springs 8550 1.1 .2 550* 15.0 13.7 109 Hansen Sawmill 8360 .6 .0 * 15.6 13.7 114 Middle Powder 7760 8.7 1.0 870* 16.4 14.7 112 Powder River Pass 9480 4.2 3.9 108 18.6 18.0 103 Soldier Park 8720 1.6 .0 * 16.1 13.4 120 ----- ----- Basin Index (%) 205* 113 TONGUE RIVER Big Goose 7990 5.3 1.3 408 18.9 17.6 107 Bone Springs Div 9350 17.0 13.2 129 18.0 20.0 90 Burgess Junction 7880 8.0 4.4 182 19.3 17.6 110 Dome Lake 8880 -M 3.5 * 21.0 20.2 104 Little Goose 8870 10.0 4.0 250 22.1 18.0 123 Sucker Creek 8880 9.6 5.5 175 24.2 21.4 113 Tie Creek 6870 1.0 .0 * 18.9 17.8 106 ----- ----- Basin Index (%) 179 107 BELLE FOURCHE Blind Park 6890 .2 .0 * 13.2 15.2 87 Cole Canyon 5910 .1 .0 * 13.7 14.4 95 North Rapid Creek 6130 -M .0 * 13.1 13.4 98 ----- ----- Basin Index (%) * 93 CHEYENNE RIVER BASIN Blind Park 6890 .2 .0 * 13.2 15.2 87 North Rapid Creek 6130 -M .0 * 13.1 13.4 98 ----- ----- Basin Index (%) * 92 UPPER N. PLATTE Arapaho Ridge 10976 20.8 16.6 125 27.6 28.4 97 Blackhall Mtn 9839 31.7 29.6 107 43.1 40.5 106 Cinnabar Park 9707 10.7 8.2 130 28.3 29.2 97 Columbine 9167 1.4 .0 * 31.3 31.2 100 Divide Peak 8730 5.0 1.1 455* 30.1 26.2 115 Joe Wright 10158 18.3 17.2 106 32.7 34.0 96 Laprele Creek 8390 .1 .0 * 18.2 17.2 106 Med Bow 10512 -M -M * -M -M * Never Summer 10323 22.2 18.8 118 21.2 22.8 93 North French Creek 10153 26.0 26.2 99 35.1 36.6 96 Old Battle 9860 33.0 31.0 106 41.3 42.0 98 Rawah 9069 1.5 .1 1500* 21.3 20.7 103 Sage Creek Basin 7850 -M .0 * 19.6 16.7 117 Sand Lake 10098 33.8 26.4 128 37.4 32.4 115 South Brush Creek 8495 .1 .0 * 16.8 19.3 87 Tower 10620 43.3 41.6 104 49.2 49.6 99 Webber Springs 9260 14.1 8.2 172 31.7 32.2 98 Whiskey Park 9020 24.2 16.7 145 36.1 36.0 100 Willow Creek Pass 9523 9.3 8.4 111 19.1 18.0 106 Zirkel 9338 4.6 4.0 115 35.8 35.9 100 ----- ----- Basin Index (%) 118 101 SWEETWATER Deer Park 9700 16.5 8.7 190 27.4 24.3 113 Larsen Creek 9000 -M .0 * 17.4 17.0 102 South Pass 9040 10.9 6.9 158 24.0 20.6 117 ----- ----- Basin Index (%) 176 111 LOWER N. PLATTE Casper Mtn. 7920 5.1 .9 567* 23.2 19.8 117 Laprele Creek 8390 .1 .0 * 18.2 17.2 106 Reno Hill 8430 7.9 1.8 439 22.9 22.2 103 Windy Peak 7915 .2 .0 * 15.7 15.4 102 ----- ----- Basin Index (%) 493* 107 LARAMIE RIVER Brooklyn Lake 10250 16.5 12.9 128 31.9 28.2 113 Cinnabar Park 9707 10.7 8.2 130 28.3 29.2 97 Crow Creek 8335 .0 .0 * 13.1 15.0 87 Deadman Hill 10239 17.2 13.8 125 24.3 24.0 101 Rawah 9069 1.5 .1 1500* 21.3 20.7 103 Roach 9740 5.9 7.1 83 22.2 24.3 91 Windy Peak 7915 .2 .0 * 15.7 15.4 102 ----- ----- Basin Index (%) 124 100 S. PLATTE Crow Creek 8335 .0 .0 * 13.1 15.0 87 ----- ----- Basin Index (%) * 87 LITTLE SNAKE RIVER Battle Mountain 7498 -M .0 * 22.7 19.4 117 Divide Peak 8730 5.0 1.1 455* 30.1 26.2 115 Elk River 8739 .0 .0 * 24.3 24.4 100 Elkhead Divide 8800 5.4 -M * 28.0 -M * Little Snake River 8928 15.0 9.9 152 40.8 39.6 103 Old Battle 9860 33.0 31.0 106 41.3 42.0 98 Sage Creek Basin 7850 -M .0 * 19.6 16.7 117 Sandstone RS 8152 .1 .0 * 22.6 21.8 104 Whiskey Park 9020 24.2 16.7 145 36.1 36.0 100 ----- ----- Basin Index (%) 132* 105 UPPER GREEN RIVER Big Sandy Opening 9080 3.7 1.3 285* 18.1 17.1 106 Blind Bull Sum 8650 23.3 20.1 116 20.1 22.1 91 East Rim Divide 7930 -M .0 * 13.4 14.4 93 Elkhart Park G.S. 9400 .5 3.0 17 14.7 16.7 88 Gros Ventre Summit 8750 1.2 2.0 60 -M 16.0 * Gunsight Pass 9820 7.6 8.8 86 18.6 17.8 104 Indian Creek 9425 16.3 15.8 103 24.2 25.2 96 Kendall R.S. 7740 .0 .0 * 15.6 16.2 96 Larsen Creek 9000 -M .0 * 17.4 17.0 102 Loomis Park 8240 .2 .0 * 18.3 21.0 87 New Fork Lake 8340 -M .0 * -M 14.0 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M .0 * 16.3 17.0 96 Spring Creek Divide 9000 19.8 19.0 104 26.5 28.6 93 Triple Peak 8500 9.8 8.0 122 30.1 31.0 97 ----- ----- Basin Index (%) 106 96 LOWER GREEN RIVER Blacks Fork Jct 8869 .2 .0 * 17.7 15.4 115 Buck Pasture 9632 6.1 -M * 22.0 -M * EF Blacks Fork GS 9360 1.4 .0 * 14.8 16.6 89 Hams Fork 7840 -M .0 * 14.3 14.5 99 Henrys Fork 10182 -M -M * 18.6 -M * Hewinta 9500 -M .0 * 19.1 17.2 111 Hickerson Park 9122 -M .0 * 17.1 13.6 126 Hole-in-Rock 9168 -M .0 * 14.4 13.6 106 Indian Creek 9425 16.3 15.8 103 24.2 25.2 96 Kelley R.S. 8180 1.1 .3 367* 21.2 21.5 99 Spirit Lk 10235 5.8 1.0 580* 23.6 20.5 115 Steel Creek Park 10158 15.1 12.0 126 23.3 21.0 111 ----- ----- Basin Index (%) 137* 106 UPPER BEAR RIVER Bear River RS 8777 -M .0 * 17.6 14.9 118 Bug Lake 7987 1.8 .4 450* 26.4 21.1 125 Burts Miller Ranch 8000 .0 .0 * 14.6 9.7 151 Chalk Creek #1 9171 11.2 9.0 124 30.0 29.4 102 Giveout 6930 -M .0 * 15.1 16.5 92 Hayden Fork 9130 -M .0 * 28.2 25.0 113 Kelley R.S. 8180 1.1 .3 367* 21.2 21.5 99 Lily Lake 9133 .3 .0 * 19.6 20.9 94 Monte Cristo 8932 18.0 12.4 145 34.4 30.2 114 Salt River Summit 7640 -M .0 * 16.3 19.4 84 Spring Creek Divide 9000 19.8 19.0 104 26.5 28.6 93 Trial Lake 9992 19.9 12.0 166 31.8 27.4 116 ----- ----- Basin Index (%) 136* 106 ----------------------------------------------------------------------------- -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.