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 29 , 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 * 24.5 25.2 97 Blind Bull Sum 8650 22.6 17.8 127 20.3 22.8 89 Cottonwood Creek 7670 .7 1.0 70* 32.5 31.8 102 East Rim Divide 7930 -M .0 * 14.0 14.8 95 Grand Targhee 9260 40.7 40.6 100 38.4 40.2 96 Granite Creek 6770 -M .0 * 21.5 23.8 90 Grassy Lake 7265 9.2 8.4 110 39.9 42.9 93 Gros Ventre Summit 8750 -M .0 * -M 16.1 * Gunsight Pass 9820 4.8 7.6 63 18.7 18.1 103 Lewis Lake Divide 7850 13.2 14.6 90 41.1 40.8 101 Loomis Park 8240 .1 .0 * 18.4 21.5 86 Phillips Bench 8200 16.8 11.0 153 35.0 31.6 111 Salt River Summit 7640 -M .0 * 17.3 20.4 85 Snake River Station 6920 .0 .0 * 26.2 28.4 92 Somsen Ranch 6800 -M .0 * 24.5 21.0 117 Spring Creek Divide 9000 17.4 16.6 105 26.7 29.3 91 Thumb Divide 7980 .3 .0 * 21.8 23.2 94 Togwotee Pass 9580 16.0 20.8 77 26.3 30.8 85 Triple Peak 8500 6.0 3.4 176 30.8 32.0 96 Two Ocean Plateau 9240 25.3 27.6 92 32.4 33.1 98 Willow Creek 8080 12.4 8.0 155 42.1 41.4 102 Younts Peak 8350 .1 1.1 9* 19.2 19.8 97 ----- ----- Basin Index (%) 104 96 MADISON HEADWATERS IN WYOMING Black Bear 8170 28.7 29.0 99 44.5 45.4 98 Canyon 7870 .0 -M * 16.8 -M * Madison Plateau 7750 9.0 10.2 88 27.5 31.7 87 West Yellowstone 6700 -M .0 * 15.7 18.2 86 Whiskey Creek 6800 .0 .0 * 23.0 26.0 88 ----- ----- Basin Index (%) 96 91 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 19.6 20.0 98 23.1 26.9 86 Canyon 7870 .0 -M * 16.8 -M * Evening Star 9200 15.0 21.8 69 32.4 35.6 91 Fisher Creek 9100 24.1 31.3 77 35.0 42.0 83 Monument Peak 8850 12.8 15.7 82 26.3 28.1 94 Northeast Entrance 7350 .0 .0 * 15.8 17.2 92 Parker Peak 9400 18.1 15.8 115 28.9 25.2 115 Sylvan Lake 8420 5.2 8.2 63 29.4 29.8 99 Thumb Divide 7980 .3 .0 * 21.8 23.2 94 Two Ocean Plateau 9240 25.3 27.6 92 32.4 33.1 98 White Mill 8700 17.0 19.4 88 24.8 28.7 86 Wolverine 7650 .0 .0 * 16.6 16.0 104 ----- ----- Basin Index (%) 86 94 WIND RIVER Burroughs Creek 8750 .1 -M * 14.2 -M * Castle Creek 8400 .0 .0 * 10.4 12.9 81 Cold Springs 9630 .1 .0 * 15.2 15.3 99 Deer Park 9700 12.5 6.0 208 27.7 24.8 112 Hobbs Park 10100 16.5 8.2 201 24.8 20.3 122 Kirwin 9550 3.7 3.6 103 20.7 18.2 114 Little Warm 9370 .0 .0 * 18.1 16.2 112 South Pass 9040 6.0 2.0 300 24.1 21.1 114 St. Lawrence Alt 8620 -M -M * 15.3 -M * Togwotee Pass 9580 16.0 20.8 77 26.3 30.8 85 Townsend Creek 8700 .5 .0 * 20.2 18.0 112 ----- ----- Basin Index (%) 136 106 BIGHORN BASIN Bald Mtn. 9380 18.2 15.0 121 20.7 21.8 95 Bear Trap Meadow 8200 -M .0 * 15.4 13.4 115 Bone Springs Div 9350 16.3 10.4 157 18.5 20.8 89 Grave Springs 8550 .0 .0 * 15.2 14.4 106 Kirwin 9550 3.7 3.6 103 20.7 18.2 114 Marquette 8760 10.5 .1 10500* 24.3 16.5 147 Middle Powder 7760 4.5 .0 * 16.3 15.4 106 Owl Creek 8975 -M .0 * 12.8 11.2 114 Powder River Pass 9480 1.8 .0 * 19.0 18.4 103 Shell Creek 9580 14.5 10.2 142 20.2 19.2 105 Timber Creek 7950 -M .0 * 18.0 13.8 130 ----- ----- Basin Index (%) 177* 110 SHOSHONE RIVER Blackwater 9780 23.0 22.1 104 29.7 29.6 100 Evening Star 9200 15.0 21.8 69 32.4 35.6 91 Marquette 8760 10.5 .1 10500* 24.3 16.5 147 Sylvan Lake 8420 5.2 8.2 63 29.4 29.8 99 Sylvan Road 7120 .0 .0 * 18.4 21.0 88 Younts Peak 8350 .1 1.1 9* 19.2 19.8 97 ----- ----- Basin Index (%) 101 101 POWDER RIVER Bear Trap Meadow 8200 -M .0 * 15.4 13.4 115 Cloud Peak Reservoir 9860 15.9 8.6 185 24.8 21.8 114 Grave Springs 8550 .0 .0 * 15.2 14.4 106 Hansen Sawmill 8360 -M .0 * 15.5 14.8 105 Middle Powder 7760 4.5 .0 * 16.3 15.4 106 Powder River Pass 9480 1.8 .0 * 19.0 18.4 103 Soldier Park 8720 .0 .2 0* 16.2 15.8 103 ----- ----- Basin Index (%) 252* 107 TONGUE RIVER Big Goose 7990 1.8 .0 * 18.8 19.2 98 Bone Springs Div 9350 16.3 10.4 157 18.5 20.8 89 Burgess Junction 7880 5.4 .6 900* 19.6 17.9 109 Dome Lake 8880 -M .1 * 21.7 20.7 105 Little Goose 8870 7.2 3.7 195 22.4 20.7 108 Sucker Creek 8880 7.5 2.0 375 24.6 21.6 114 Tie Creek 6870 -M .0 * 19.0 18.9 101 ----- ----- Basin Index (%) 229* 103 BELLE FOURCHE Blind Park 6890 .0 .0 * 13.4 16.0 84 Cole Canyon 5910 .1 .0 * 13.7 15.1 91 North Rapid Creek 6130 -M .0 * 13.7 14.2 96 ----- ----- Basin Index (%) * 90 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 13.4 16.0 84 North Rapid Creek 6130 -M .0 * 13.7 14.2 96 ----- ----- Basin Index (%) * 90 UPPER N. PLATTE Arapaho Ridge 10976 18.4 12.4 148 28.1 28.6 98 Blackhall Mtn 9839 28.7 27.8 103 43.7 41.2 106 Cinnabar Park 9707 6.7 5.9 114 28.6 29.4 97 Columbine 9167 -M .0 * 32.2 31.8 101 Divide Peak 8730 .4 .0 * 31.2 26.8 116 Joe Wright 10158 16.5 14.4 115 33.1 34.5 96 Laprele Creek 8390 -M .0 * -M 17.6 * Med Bow 10512 -M -M * -M -M * Never Summer 10323 20.9 17.1 122 21.8 23.6 92 North French Creek 10153 25.0 22.9 109 36.1 36.9 98 Old Battle 9860 32.5 27.9 116 42.8 42.4 101 Rawah 9069 .0 .0 * 21.4 21.0 102 Sage Creek Basin 7850 -M .0 * 20.2 16.9 120 Sand Lake 10098 32.4 24.2 134 38.4 33.1 116 South Brush Creek 8495 .1 .0 * 17.5 19.7 89 Tower 10620 42.7 37.4 114 50.4 50.2 100 Webber Springs 9260 11.0 3.2 344 32.7 32.3 101 Whiskey Park 9020 16.4 10.6 155 36.8 36.0 102 Willow Creek Pass 9523 5.1 3.2 159 19.3 18.3 105 Zirkel 9338 .1 .0 * 36.5 36.4 100 ----- ----- Basin Index (%) 124 102 SWEETWATER Deer Park 9700 12.5 6.0 208 27.7 24.8 112 Larsen Creek 9000 -M .0 * 17.6 17.2 102 South Pass 9040 6.0 2.0 300 24.1 21.1 114 ----- ----- Basin Index (%) 231 110 LOWER N. PLATTE Casper Mtn. 7920 .0 .0 * 23.3 20.8 112 Laprele Creek 8390 -M .0 * -M 17.6 * Reno Hill 8430 3.2 .0 * 23.0 22.6 102 Windy Peak 7915 .0 .0 * 15.7 16.5 95 ----- ----- Basin Index (%) * 104 LARAMIE RIVER Brooklyn Lake 10250 13.6 8.8 155 32.6 28.6 114 Cinnabar Park 9707 6.7 5.9 114 28.6 29.4 97 Crow Creek 8335 .0 .0 * 13.3 16.0 83 Deadman Hill 10239 14.4 10.2 141 24.6 24.2 102 Rawah 9069 .0 .0 * 21.4 21.0 102 Roach 9740 1.6 2.6 62 22.5 24.6 91 Windy Peak 7915 .0 .0 * 15.7 16.5 95 ----- ----- Basin Index (%) 132 99 S. PLATTE Crow Creek 8335 .0 .0 * 13.3 16.0 83 ----- ----- Basin Index (%) * 83 LITTLE SNAKE RIVER Battle Mountain 7498 .0 .0 * 23.5 19.8 119 Divide Peak 8730 .4 .0 * 31.2 26.8 116 Elk River 8739 .1 .0 * 24.6 24.4 101 Elkhead Divide 8800 1.7 -M * 28.9 -M * Little Snake River 8928 12.1 4.8 252 42.1 40.4 104 Old Battle 9860 32.5 27.9 116 42.8 42.4 101 Sage Creek Basin 7850 -M .0 * 20.2 16.9 120 Sandstone RS 8152 .0 .0 * 23.7 22.0 108 Whiskey Park 9020 16.4 10.6 155 36.8 36.0 102 ----- ----- Basin Index (%) 142* 107 UPPER GREEN RIVER Big Sandy Opening 9080 .3 .0 * 18.2 17.4 105 Blind Bull Sum 8650 22.6 17.8 127 20.3 22.8 89 East Rim Divide 7930 -M .0 * 14.0 14.8 95 Elkhart Park G.S. 9400 -M .2 * 14.9 17.4 86 Gros Ventre Summit 8750 -M .0 * -M 16.1 * Gunsight Pass 9820 4.8 7.6 63 18.7 18.1 103 Indian Creek 9425 12.8 13.0 98 24.8 25.8 96 Kendall R.S. 7740 .0 .0 * 15.8 17.0 93 Larsen Creek 9000 -M .0 * 17.6 17.2 102 Loomis Park 8240 .1 .0 * 18.4 21.5 86 New Fork Lake 8340 -M .0 * -M 14.8 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M .0 * 16.4 17.9 92 Spring Creek Divide 9000 17.4 16.6 105 26.7 29.3 91 Triple Peak 8500 6.0 3.4 176 30.8 32.0 96 ----- ----- Basin Index (%) 110* 94 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 .0 * 18.1 15.7 115 Buck Pasture 9632 3.3 -M * 22.7 -M * EF Blacks Fork GS 9360 .0 .0 * 16.2 16.8 96 Hams Fork 7840 -M .0 * 14.6 14.8 99 Henrys Fork 10182 -M -M * 18.6 -M * Hewinta 9500 .0 .0 * 19.6 17.8 110 Hickerson Park 9122 .0 .0 * 17.3 14.4 120 Hole-in-Rock 9168 .0 .0 * 14.8 13.9 106 Indian Creek 9425 12.8 13.0 98 24.8 25.8 96 Kelley R.S. 8180 -M .0 * 21.4 22.1 97 Spirit Lk 10235 1.0 .0 * 23.8 20.6 116 Steel Creek Park 10158 13.0 10.0 130 23.8 21.1 113 ----- ----- Basin Index (%) 117* 106 UPPER BEAR RIVER Bear River RS 8777 .0 .0 * 18.1 15.2 119 Bug Lake 7987 .0 .0 * 26.8 21.8 123 Burts Miller Ranch 8000 .0 .0 * 15.0 9.8 153 Chalk Creek #1 9171 7.5 4.4 170 30.8 29.8 103 Giveout 6930 .0 .0 * 15.7 16.8 93 Hayden Fork 9130 .0 .0 * 28.6 25.5 112 Kelley R.S. 8180 -M .0 * 21.4 22.1 97 Lily Lake 9133 .0 .0 * 20.2 21.2 95 Monte Cristo 8932 13.7 7.0 196 34.9 30.6 114 Salt River Summit 7640 -M .0 * 17.3 20.4 85 Spring Creek Divide 9000 17.4 16.6 105 26.7 29.3 91 Trial Lake 9992 18.8 7.3 258 32.8 27.6 119 ----- ----- Basin Index (%) 163* 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.