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 TUESDAY: MAY 24 , 2022 ------------------------------------------------------------------------------ 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 * 21.2 25.1 84 Blind Bull Sum 8650 22.6 20.1 112 17.8 22.1 81 Cottonwood Creek 7670 7.8 4.9 159 30.1 30.6 98 East Rim Divide 7930 .0 .0 * 12.9 14.4 90 Grand Targhee 9260 32.2 43.8 74 33.2 39.0 85 Granite Creek 6770 .0 .0 * 17.4 22.8 76 Grassy Lake 7265 14.5 13.3 109 36.4 42.4 86 Gros Ventre Summit 8750 1.4 2.0 70 14.0 16.0 88 Gunsight Pass 9820 10.7 8.8 122 17.4 17.8 98 Lewis Lake Divide 7850 15.5 19.3 80 37.2 40.0 93 Loomis Park 8240 .0 .0 * 18.6 21.0 89 Phillips Bench 8200 15.0 15.7 96 28.3 31.5 90 Salt River Summit 7640 .0 .0 * 18.7 19.4 96 Snake River Station 6920 .0 .0 * 21.4 28.0 76 Somsen Ranch 6800 .0 .0 * -M 20.3 * Spring Creek Divide 9000 19.9 19.0 105 27.5 28.6 96 Thumb Divide 7980 5.5 .0 * 22.7 23.0 99 Togwotee Pass 9580 22.1 23.2 95 27.4 30.0 91 Triple Peak 8500 13.6 8.0 170 31.6 31.0 102 Two Ocean Plateau 9240 30.4 28.8 106 31.3 32.8 95 Willow Creek 8080 16.4 13.5 121 39.1 40.8 96 Younts Peak 8350 1.2 3.6 33 15.9 19.5 82 ----- ----- Basin Index (%) 102 90 MADISON HEADWATERS IN WYOMING Black Bear 8170 28.2 33.4 84 36.0 45.0 80 Canyon 7870 5.8 -M * 16.7 -M * Madison Plateau 7750 13.1 13.5 97 26.0 31.1 84 West Yellowstone 6700 .0 .0 * 16.4 17.8 92 Whiskey Creek 6800 5.6 3.0 187 -M 25.4 * ----- ----- Basin Index (%) 94 83 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 21.2 21.1 100 22.2 26.2 85 Canyon 7870 5.8 -M * 16.7 -M * Evening Star 9200 29.2 21.8 134 31.4 34.9 90 Fisher Creek 9100 33.8 35.2 96 39.1 41.8 94 Monument Peak 8850 19.7 17.7 111 28.1 28.0 100 Northeast Entrance 7350 .0 .0 * 15.6 16.8 93 Parker Peak 9400 23.8 18.5 129 26.5 24.6 108 Sylvan Lake 8420 11.6 11.7 99 27.4 29.4 93 Thumb Divide 7980 5.5 .0 * 22.7 23.0 99 Two Ocean Plateau 9240 30.4 28.8 106 31.3 32.8 95 White Mill 8700 23.4 21.4 109 26.2 27.8 94 Wolverine 7650 .0 .0 * 16.9 15.9 106 ----- ----- Basin Index (%) 113 95 WIND RIVER Burroughs Creek 8750 1.6 -M * 17.8 -M * Castle Creek 8400 .0 .0 * -M 12.2 * Cold Springs 9630 .4 .0 * 16.9 14.6 116 Deer Park 9700 10.8 8.7 124 22.4 24.3 92 Hobbs Park 10100 17.4 11.8 147 23.0 19.6 117 Kirwin 9550 10.9 7.0 156 18.6 17.2 108 Little Warm 9370 6.7 1.2 558 17.7 15.8 112 South Pass 9040 6.2 6.9 90 19.0 20.6 92 St. Lawrence Alt 8620 .0 -M * 13.3 -M * Togwotee Pass 9580 22.1 23.2 95 27.4 30.0 91 Townsend Creek 8700 2.9 .0 * 18.2 17.4 105 ----- ----- Basin Index (%) 132 102 BIGHORN BASIN Bald Mtn. 9380 18.3 17.0 108 19.4 21.1 92 Bear Trap Meadow 8200 .0 .0 * 13.4 13.2 102 Bone Springs Div 9350 16.0 13.2 121 17.7 20.0 88 Grave Springs 8550 3.0 .2 1500* 14.3 13.7 104 Kirwin 9550 10.9 7.0 156 18.6 17.2 108 Marquette 8760 1.5 1.3 115 13.8 16.3 85 Middle Powder 7760 5.6 1.0 560* 14.6 14.7 99 Owl Creek 8975 .4 .0 * 11.3 10.4 109 Powder River Pass 9480 4.3 3.9 110 13.2 18.0 73 Shell Creek 9580 15.2 14.0 109 18.6 18.4 101 Timber Creek 7950 .2 .0 * 12.8 13.2 97 ----- ----- Basin Index (%) 131 95 SHOSHONE RIVER Blackwater 9780 26.8 23.0 117 30.0 29.0 103 Evening Star 9200 29.2 21.8 134 31.4 34.9 90 Marquette 8760 1.5 1.3 115 13.8 16.3 85 Sylvan Lake 8420 11.6 11.7 99 27.4 29.4 93 Sylvan Road 7120 .0 .0 * -M 19.9 * Younts Peak 8350 1.2 3.6 33 15.9 19.5 82 ----- ----- Basin Index (%) 114 92 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 13.4 13.2 102 Cloud Peak Reservoir 9860 13.4 11.4 118 20.6 20.8 99 Grave Springs 8550 3.0 .2 1500* 14.3 13.7 104 Hansen Sawmill 8360 .5 .0 * 13.2 13.7 96 Middle Powder 7760 5.6 1.0 560* 14.6 14.7 99 Powder River Pass 9480 4.3 3.9 110 13.2 18.0 73 Soldier Park 8720 .6 .0 * 13.9 13.4 104 ----- ----- Basin Index (%) 166* 96 TONGUE RIVER Big Goose 7990 3.8 1.3 292 16.4 17.6 93 Bone Springs Div 9350 16.0 13.2 121 17.7 20.0 88 Burgess Junction 7880 10.0 4.4 227 19.0 17.6 108 Dome Lake 8880 9.6 3.5 274 19.4 20.2 96 Little Goose 8870 6.9 4.0 172 20.0 18.0 111 Sucker Creek 8880 10.2 5.5 185 23.1 21.4 108 Tie Creek 6870 .1 .0 * 18.1 17.8 102 ----- ----- Basin Index (%) 177 101 BELLE FOURCHE Blind Park 6890 .0 .0 * 16.2 15.2 107 Cole Canyon 5910 .0 .0 * 16.6 14.4 115 North Rapid Creek 6130 -M .0 * 10.0 13.4 75 ----- ----- Basin Index (%) * 100 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 16.2 15.2 107 North Rapid Creek 6130 -M .0 * 10.0 13.4 75 ----- ----- Basin Index (%) * 92 UPPER N. PLATTE Arapaho Ridge 10976 11.5 16.6 69 26.0 28.4 92 Blackhall Mtn 9839 18.9 29.6 64 36.3 40.5 90 Cinnabar Park 9707 4.8 8.2 59 25.3 29.2 87 Columbine 9167 .0 .0 * 30.1 31.2 96 Divide Peak 8730 .0 1.1 0* 24.7 26.2 94 Joe Wright 10158 18.3 17.2 106 37.8 34.0 111 Laprele Creek 8390 .0 .0 * 15.3 17.2 89 Med Bow 10512 31.6 -M * 37.6 -M * Never Summer 10323 21.6 18.8 115 23.2 22.8 102 North French Creek 10153 21.5 26.2 82 33.3 36.6 91 Old Battle 9860 27.0 31.0 87 37.2 42.0 89 Rawah 9069 .2 .1 200* 21.7 20.7 105 Sage Creek Basin 7850 -M .0 * 13.5 16.7 81 Sand Lake 10098 26.5 26.4 100 33.1 32.4 102 South Brush Creek 8495 .4 .0 * 16.9 19.3 88 Tower 10620 36.2 41.6 87 49.1 49.6 99 Webber Springs 9260 8.8 8.2 107 30.5 32.2 95 Whiskey Park 9020 -M 16.7 * 35.0 36.0 97 Willow Creek Pass 9523 6.1 8.4 73 19.4 18.0 108 Zirkel 9338 1.5 4.0 38 37.3 35.9 104 ----- ----- Basin Index (%) 86 96 SWEETWATER Deer Park 9700 10.8 8.7 124 22.4 24.3 92 Larsen Creek 9000 -M .0 * 16.1 17.0 95 South Pass 9040 6.2 6.9 90 19.0 20.6 92 ----- ----- Basin Index (%) 109 93 LOWER N. PLATTE Casper Mtn. 7920 .9 .9 100* 20.0 19.8 101 Laprele Creek 8390 .0 .0 * 15.3 17.2 89 Reno Hill 8430 6.7 1.8 372 23.1 22.2 104 Windy Peak 7915 .3 .0 * 13.7 15.4 89 ----- ----- Basin Index (%) 293* 97 LARAMIE RIVER Brooklyn Lake 10250 9.0 12.9 70 28.2 28.2 100 Cinnabar Park 9707 4.8 8.2 59 25.3 29.2 87 Crow Creek 8335 .1 .0 * 13.3 15.0 89 Deadman Hill 10239 9.7 13.8 70 24.8 24.0 103 Rawah 9069 .2 .1 200* 21.7 20.7 105 Roach 9740 4.3 7.1 61 25.4 24.3 105 Windy Peak 7915 .3 .0 * 13.7 15.4 89 ----- ----- Basin Index (%) 67 97 S. PLATTE Crow Creek 8335 .1 .0 * 13.3 15.0 89 ----- ----- Basin Index (%) * 89 LITTLE SNAKE RIVER Battle Mountain 7498 .0 .0 * 19.3 19.4 99 Divide Peak 8730 .0 1.1 0* 24.7 26.2 94 Elk River 8739 .1 .0 * 26.2 24.4 107 Elkhead Divide 8800 .0 -M * 25.6 -M * Little Snake River 8928 7.1 9.9 72 36.8 39.6 93 Old Battle 9860 27.0 31.0 87 37.2 42.0 89 Sage Creek Basin 7850 -M .0 * 13.5 16.7 81 Sandstone RS 8152 .0 .0 * 19.1 21.8 88 Whiskey Park 9020 -M 16.7 * 35.0 36.0 97 ----- ----- Basin Index (%) 81* 94 UPPER GREEN RIVER Big Sandy Opening 9080 4.2 1.3 323* 16.0 17.1 94 Blind Bull Sum 8650 22.6 20.1 112 17.8 22.1 81 East Rim Divide 7930 .0 .0 * 12.9 14.4 90 Elkhart Park G.S. 9400 .3 3.0 10 12.2 16.7 73 Gros Ventre Summit 8750 1.4 2.0 70 14.0 16.0 88 Gunsight Pass 9820 10.7 8.8 122 17.4 17.8 98 Indian Creek 9425 15.9 15.8 101 23.4 25.2 93 Kendall R.S. 7740 .0 .0 * 16.3 16.2 101 Larsen Creek 9000 -M .0 * 16.1 17.0 95 Loomis Park 8240 .0 .0 * 18.6 21.0 89 New Fork Lake 8340 .0 .0 * 11.7 14.0 84 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M .0 * 18.7 17.0 110 Spring Creek Divide 9000 19.9 19.0 105 27.5 28.6 96 Triple Peak 8500 13.6 8.0 170 31.6 31.0 102 ----- ----- Basin Index (%) 114 93 LOWER GREEN RIVER Blacks Fork Jct 8869 .4 .0 * 15.6 15.4 101 Buck Pasture 9632 .1 -M * 21.0 -M * EF Blacks Fork GS 9360 -M .0 * 17.7 16.6 107 Hams Fork 7840 .0 .0 * 13.7 14.5 94 Henrys Fork 10182 -M -M * 14.7 -M * Hewinta 9500 .0 .0 * 18.2 17.2 106 Hickerson Park 9122 .0 .0 * 12.9 13.6 95 Hole-in-Rock 9168 .0 .0 * 13.3 13.6 98 Indian Creek 9425 15.9 15.8 101 23.4 25.2 93 Kelley R.S. 8180 .4 .3 133* 19.5 21.5 91 Spirit Lk 10235 .3 1.0 30* -M 20.5 * Steel Creek Park 10158 7.7 12.0 64 21.4 21.0 102 ----- ----- Basin Index (%) 85* 98 UPPER BEAR RIVER Bear River RS 8777 .0 .0 * 16.6 14.9 111 Bug Lake 7987 .2 .4 50* 21.7 21.1 103 Burts Miller Ranch 8000 -M .0 * 10.0 9.7 103 Chalk Creek #1 9171 5.6 9.0 62 27.5 29.4 94 Giveout 6930 .0 .0 * 14.6 16.5 88 Hayden Fork 9130 .0 .0 * 25.5 25.0 102 Kelley R.S. 8180 .4 .3 133* 19.5 21.5 91 Lily Lake 9133 .1 .0 * 19.1 20.9 91 Monte Cristo 8932 8.2 12.4 66 29.3 30.2 97 Salt River Summit 7640 .0 .0 * 18.7 19.4 96 Spring Creek Divide 9000 19.9 19.0 105 27.5 28.6 96 Trial Lake 9992 .6 12.0 5 26.4 27.4 96 ----- ----- Basin Index (%) 66* 97 ----------------------------------------------------------------------------- -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.