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 SUNDAY: MARCH 31 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 15.7 16.2 97 20.0 19.6 102 Blind Bull Sum 8650 23.4 23.6 99 16.1 17.5 92 Cottonwood Creek 7670 20.7 21.4 97 25.0 24.4 102 East Rim Divide 7930 9.0 10.3 87 10.4 10.9 95 Grand Targhee 9260 37.1 40.1 93 25.8 29.8 87 Granite Creek 6770 14.9 15.6 96 15.8 17.2 92 Grassy Lake 7265 28.3 31.6 90 33.7 33.4 101 Gros Ventre Summit 8750 11.7 12.6 93 13.1 11.8 111 Gunsight Pass 9820 12.3 12.6 98 13.9 13.2 105 Lewis Lake Divide 7850 31.7 30.0 106 34.8 31.8 109 Loomis Park 8240 11.9 15.3 78 14.6 16.4 89 Phillips Bench 8200 24.6 25.9 95 27.2 26.1 104 Salt River Summit 7640 15.8 13.4 118 14.6 15.3 95 Snake River Station 6920 16.2 16.8 96 22.6 21.3 106 Somsen Ranch 6800 17.8 11.4 156 20.9 16.3 128 Spring Creek Divide 9000 -M 24.2 * -M 23.1 * Thumb Divide 7980 17.0 15.8 108 17.7 17.0 104 Togwotee Pass 9580 19.3 22.9 84 18.8 24.0 78 Triple Peak 8500 23.1 22.4 103 23.2 24.4 95 Two Ocean Plateau 9240 26.7 28.0 95 25.5 25.3 101 Willow Creek 8080 33.1 29.0 114 33.4 31.8 105 Younts Peak 8350 14.2 14.2 100 14.9 14.3 104 ----- ----- Basin Index (%) 99 100 MADISON HEADWATERS IN WYOMING Black Bear 8170 33.0 36.9 89 37.0 35.1 105 Canyon 7870 10.9 -M * 13.6 -M * Madison Plateau 7750 20.3 21.7 94 22.8 23.5 97 West Yellowstone 6700 9.0 10.2 88 13.5 13.6 99 Whiskey Creek 6800 13.6 15.0 91 19.7 19.2 103 ----- ----- Basin Index (%) 91 102 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 14.7 21.1 70 14.3 19.4 74 Canyon 7870 10.9 -M * 13.6 -M * Evening Star 9200 20.5 24.2 85 25.7 26.8 96 Fisher Creek 9100 22.4 31.4 71 25.0 31.6 79 Monument Peak 8850 14.5 19.7 74 17.4 20.6 84 Northeast Entrance 7350 6.2 9.4 66 10.2 12.4 82 Parker Peak 9400 19.8 20.2 98 21.3 19.2 111 Sylvan Lake 8420 15.8 19.1 83 22.2 22.0 101 Thumb Divide 7980 17.0 15.8 108 17.7 17.0 104 Two Ocean Plateau 9240 26.7 28.0 95 25.5 25.3 101 White Mill 8700 16.9 23.0 73 17.6 21.8 81 Wolverine 7650 9.5 10.9 87 13.0 11.9 109 ----- ----- Basin Index (%) 83 92 WIND RIVER Burroughs Creek 8750 11.2 -M * 11.4 -M * Castle Creek 8400 6.6 6.6 100 7.9 8.2 96 Cold Springs 9630 8.0 7.2 111 11.0 8.8 125 Deer Park 9700 17.9 14.0 128 20.1 17.0 118 Hobbs Park 10100 16.0 13.7 117 16.3 12.6 129 Kirwin 9550 13.2 10.4 127 15.5 11.4 136 Little Warm 9370 9.9 10.2 97 12.8 11.5 111 South Pass 9040 15.4 14.4 107 17.2 15.0 115 St. Lawrence Alt 8620 6.4 -M * 9.7 -M * Togwotee Pass 9580 19.3 22.9 84 18.8 24.0 78 Townsend Creek 8700 9.8 8.9 110 13.5 10.6 127 ----- ----- Basin Index (%) 107 112 BIGHORN BASIN Bald Mtn. 9380 12.3 18.6 66 11.6 15.4 75 Bear Trap Meadow 8200 4.2 6.0 70 7.3 7.8 94 Bone Springs Div 9350 12.1 16.2 75 11.4 14.8 77 Grave Springs 8550 4.2 8.0 52 6.6 8.9 74 Kirwin 9550 13.2 10.4 127 15.5 11.4 136 Marquette 8760 11.6 6.8 171 14.4 8.5 169 Middle Powder 7760 5.4 10.4 52 7.1 9.4 76 Owl Creek 8975 5.2 5.4 96 6.8 5.8 117 Powder River Pass 9480 6.1 10.6 58 9.7 11.9 82 Shell Creek 9580 11.1 14.8 75 11.8 13.2 89 Timber Creek 7950 7.9 4.4 180 11.8 7.6 155 ----- ----- Basin Index (%) 84 99 SHOSHONE RIVER Blackwater 9780 21.7 21.8 100 22.6 20.8 109 Evening Star 9200 20.5 24.2 85 25.7 26.8 96 Marquette 8760 11.6 6.8 171 14.4 8.5 169 Sylvan Lake 8420 15.8 19.1 83 22.2 22.0 101 Sylvan Road 7120 7.4 10.9 68 14.9 15.6 96 Younts Peak 8350 14.2 14.2 100 14.9 14.3 104 ----- ----- Basin Index (%) 94 106 POWDER RIVER Bear Trap Meadow 8200 4.2 6.0 70 7.3 7.8 94 Cloud Peak Reservoir 9860 11.0 14.0 79 12.7 12.6 101 Grave Springs 8550 4.2 8.0 52 6.6 8.9 74 Hansen Sawmill 8360 4.9 6.6 74 7.8 8.0 98 Middle Powder 7760 5.4 10.4 52 7.1 9.4 76 Powder River Pass 9480 6.1 10.6 58 9.7 11.9 82 Soldier Park 8720 3.9 7.1 55 8.9 8.6 103 ----- ----- Basin Index (%) 63 89 TONGUE RIVER Big Goose 7990 5.6 8.2 68 9.6 9.4 102 Bone Springs Div 9350 12.1 16.2 75 11.4 14.8 77 Burgess Junction 7880 7.1 9.8 72 10.5 10.9 96 Dome Lake 8880 -M 11.2 * 9.9 12.0 82 Little Goose 8870 7.5 9.2 82 10.8 11.4 95 Sucker Creek 8880 8.9 11.6 77 12.5 12.9 97 Tie Creek 6870 2.3 5.0 46 11.1 10.2 109 ----- ----- Basin Index (%) 72 93 BELLE FOURCHE Blind Park 6890 .0 7.0 0 5.9 10.4 57 Cole Canyon 5910 1.8 5.1 35 5.1 8.5 60 North Rapid Creek 6130 4.7 6.6 71 6.6 8.4 79 ----- ----- Basin Index (%) 35 64 CHEYENNE RIVER BASIN Blind Park 6890 .0 7.0 0 5.9 10.4 57 North Rapid Creek 6130 4.7 6.6 71 6.6 8.4 79 ----- ----- Basin Index (%) 35 66 UPPER N. PLATTE Arapaho Ridge 10976 21.0 20.7 101 20.9 20.9 100 Blackhall Mtn 9839 32.0 30.0 107 33.6 28.7 117 Cinnabar Park 9707 20.0 19.9 101 22.4 22.8 98 Columbine 9167 26.8 21.8 123 25.2 23.2 109 Divide Peak 8730 21.4 19.4 110 23.7 20.8 114 Joe Wright 10158 18.6 19.5 95 22.7 25.0 91 Laprele Creek 8390 7.1 9.2 77 10.3 11.2 92 Med Bow 10512 37.2 -M * 32.0 -M * Never Summer 10323 18.3 19.6 93 14.1 16.4 86 North French Creek 10153 26.2 27.3 96 26.0 25.7 101 Old Battle 9860 32.2 29.0 111 32.7 31.6 103 Rawah 9069 12.7 10.6 120 15.9 14.7 108 Sage Creek Basin 7850 16.0 13.0 123 15.3 12.4 123 Sand Lake 10098 29.0 26.4 110 27.9 23.8 117 South Brush Creek 8495 10.7 11.8 91 11.9 13.2 90 Tower 10620 40.1 42.0 95 36.6 38.2 96 Webber Springs 9260 23.8 21.6 110 25.4 24.5 104 Whiskey Park 9020 31.7 25.4 125 29.2 26.4 111 Willow Creek Pass 9523 13.9 12.6 110 14.6 13.1 111 Zirkel 9338 25.9 27.6 94 27.9 30.0 93 ----- ----- Basin Index (%) 105 103 SWEETWATER Deer Park 9700 17.9 14.0 128 20.1 17.0 118 Larsen Creek 9000 9.1 10.4 88 14.0 13.0 108 South Pass 9040 15.4 14.4 107 17.2 15.0 115 ----- ----- Basin Index (%) 109 114 LOWER N. PLATTE Casper Mtn. 7920 9.6 12.9 74 13.4 13.2 102 Laprele Creek 8390 7.1 9.2 77 10.3 11.2 92 Reno Hill 8430 9.3 13.8 67 13.0 14.4 90 Windy Peak 7915 8.3 7.8 106 9.6 9.8 98 ----- ----- Basin Index (%) 78 95 LARAMIE RIVER Brooklyn Lake 10250 24.3 20.6 118 24.5 20.9 117 Cinnabar Park 9707 20.0 19.9 101 22.4 22.8 98 Crow Creek 8335 5.5 5.9 93 9.9 10.1 98 Deadman Hill 10239 19.2 15.7 122 17.9 16.9 106 Rawah 9069 12.7 10.6 120 15.9 14.7 108 Roach 9740 14.8 15.0 99 17.1 18.2 94 Windy Peak 7915 8.3 7.8 106 9.6 9.8 98 ----- ----- Basin Index (%) 110 103 S. PLATTE Crow Creek 8335 5.5 5.9 93 9.9 10.1 98 ----- ----- Basin Index (%) 93 98 LITTLE SNAKE RIVER Battle Mountain 7498 12.2 11.0 111 18.5 14.4 128 Divide Peak 8730 21.4 19.4 110 23.7 20.8 114 Elk River 8739 19.0 17.6 108 19.5 18.1 108 Elkhead Divide 8800 23.0 -M * 23.2 -M * Little Snake River 8928 29.4 25.4 116 32.6 31.0 105 Old Battle 9860 32.2 29.0 111 32.7 31.6 103 Sage Creek Basin 7850 16.0 13.0 123 15.3 12.4 123 Sandstone RS 8152 19.0 12.4 153 18.0 17.2 105 Whiskey Park 9020 31.7 25.4 125 29.2 26.4 111 ----- ----- Basin Index (%) 118 110 UPPER GREEN RIVER Big Sandy Opening 9080 13.1 12.9 102 14.0 12.2 115 Blind Bull Sum 8650 23.4 23.6 99 16.1 17.5 92 East Rim Divide 7930 9.0 10.3 87 10.4 10.9 95 Elkhart Park G.S. 9400 10.2 12.2 84 11.0 12.4 89 Gros Ventre Summit 8750 11.7 12.6 93 13.1 11.8 111 Gunsight Pass 9820 12.3 12.6 98 13.9 13.2 105 Indian Creek 9425 23.0 22.9 100 19.5 19.3 101 Kendall R.S. 7740 9.2 11.3 81 12.6 13.0 97 Larsen Creek 9000 9.1 10.4 88 14.0 13.0 108 Loomis Park 8240 11.9 15.3 78 14.6 16.4 89 New Fork Lake 8340 8.5 10.4 82 -M 10.4 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 9.9 12.4 80 12.3 13.6 90 Spring Creek Divide 9000 -M 24.2 * -M 23.1 * Triple Peak 8500 23.1 22.4 103 23.2 24.4 95 ----- ----- Basin Index (%) 92 98 LOWER GREEN RIVER Blacks Fork Jct 8869 11.4 8.8 130 13.8 12.0 115 Buck Pasture 9632 15.5 -M * 15.8 -M * EF Blacks Fork GS 9360 11.8 11.3 104 10.1 10.4 97 Hams Fork 7840 -M 10.8 * 11.2 10.8 104 Henrys Fork 10182 -M -M * 13.3 -M * Hewinta 9500 12.7 10.2 125 14.8 12.6 117 Hickerson Park 9122 11.3 7.5 151 13.6 9.7 140 Hole-in-Rock 9168 9.3 7.0 133 10.9 9.4 116 Indian Creek 9425 23.0 22.9 100 19.5 19.3 101 Kelley R.S. 8180 16.6 14.5 114 17.1 15.6 110 Spirit Lk 10235 15.2 11.7 130 18.5 15.9 116 Steel Creek Park 10158 15.4 13.8 112 17.5 15.4 114 ----- ----- Basin Index (%) 118 112 UPPER BEAR RIVER Bear River RS 8777 12.8 9.4 136 14.4 11.4 126 Bug Lake 7987 22.4 18.3 122 22.7 17.2 132 Burts Miller Ranch 8000 9.3 5.4 172 12.6 7.1 177 Chalk Creek #1 9171 24.3 22.5 108 24.4 22.2 110 Giveout 6930 11.4 8.0 142 12.7 11.6 109 Hayden Fork 9130 19.2 14.4 133 22.7 19.6 116 Kelley R.S. 8180 16.6 14.5 114 17.1 15.6 110 Lily Lake 9133 14.0 12.2 115 15.7 14.6 108 Monte Cristo 8932 29.4 25.8 114 27.6 25.3 109 Salt River Summit 7640 15.8 13.4 118 14.6 15.3 95 Spring Creek Divide 9000 -M 24.2 * -M 23.1 * Trial Lake 9992 28.0 21.4 131 26.1 21.4 122 ----- ----- Basin Index (%) 123 116 ----------------------------------------------------------------------------- -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.