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: APRIL 16 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 13.0 15.2 86 21.1 21.1 100 Blind Bull Sum 8650 23.7 24.9 95 16.8 18.2 92 Cottonwood Creek 7670 19.0 20.4 93 26.1 26.2 100 East Rim Divide 7930 5.2 9.7 54 11.2 11.6 97 Grand Targhee 9260 40.7 46.2 88 31.5 33.8 93 Granite Creek 6770 13.2 13.0 102 16.7 19.2 87 Grassy Lake 7265 27.0 32.4 83 35.3 36.6 96 Gros Ventre Summit 8750 11.5 13.0 88 13.9 13.0 107 Gunsight Pass 9820 13.0 13.3 98 15.3 14.6 105 Lewis Lake Divide 7850 30.1 32.3 93 36.1 34.4 105 Loomis Park 8240 10.1 14.6 69 15.4 17.2 90 Phillips Bench 8200 24.0 26.4 91 28.4 27.3 104 Salt River Summit 7640 13.5 11.5 117 15.4 16.7 92 Snake River Station 6920 12.9 15.0 86 23.5 23.2 101 Somsen Ranch 6800 13.7 9.1 151 21.9 17.3 127 Spring Creek Divide 9000 24.3 25.2 96 22.5 24.4 92 Thumb Divide 7980 16.2 16.0 101 18.7 18.9 99 Togwotee Pass 9580 19.9 24.6 81 20.4 25.6 80 Triple Peak 8500 21.3 22.0 97 25.1 25.8 97 Two Ocean Plateau 9240 28.9 31.9 91 27.2 28.1 97 Willow Creek 8080 32.2 28.4 113 35.4 34.5 103 Younts Peak 8350 13.6 15.0 91 15.7 15.9 99 ----- ----- Basin Index (%) 93 98 MADISON HEADWATERS IN WYOMING Black Bear 8170 32.7 39.4 83 38.7 38.2 101 Canyon 7870 10.8 -M * 14.3 -M * Madison Plateau 7750 20.1 23.2 87 24.0 25.4 94 West Yellowstone 6700 5.7 7.4 77 13.8 14.7 94 Whiskey Creek 6800 12.8 15.5 83 20.2 20.8 97 ----- ----- Basin Index (%) 83 98 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 15.9 23.1 69 15.5 21.4 72 Canyon 7870 10.8 -M * 14.3 -M * Evening Star 9200 20.1 25.9 78 27.0 29.2 92 Fisher Creek 9100 22.9 35.2 65 26.3 35.1 75 Monument Peak 8850 14.1 21.7 65 18.7 23.0 81 Northeast Entrance 7350 3.0 7.8 38 10.7 13.4 80 Parker Peak 9400 20.6 22.6 91 22.6 21.0 108 Sylvan Lake 8420 14.8 20.2 73 23.6 24.3 97 Thumb Divide 7980 16.2 16.0 101 18.7 18.9 99 Two Ocean Plateau 9240 28.9 31.9 91 27.2 28.1 97 White Mill 8700 17.3 25.1 69 18.4 23.5 78 Wolverine 7650 6.1 8.4 73 13.4 12.8 105 ----- ----- Basin Index (%) 76 89 WIND RIVER Burroughs Creek 8750 9.1 -M * 12.0 -M * Castle Creek 8400 4.0 5.6 71 8.5 9.0 94 Cold Springs 9630 5.9 6.7 88 11.7 9.8 119 Deer Park 9700 17.5 15.8 111 21.2 19.5 109 Hobbs Park 10100 15.8 15.4 103 17.2 14.4 119 Kirwin 9550 12.7 11.6 109 16.3 12.8 127 Little Warm 9370 9.9 10.3 96 13.8 12.4 111 South Pass 9040 14.4 15.7 92 18.1 16.5 110 St. Lawrence Alt 8620 3.7 -M * 10.4 -M * Togwotee Pass 9580 19.9 24.6 81 20.4 25.6 80 Townsend Creek 8700 9.1 10.0 91 14.4 12.8 112 ----- ----- Basin Index (%) 94 107 BIGHORN BASIN Bald Mtn. 9380 13.9 19.7 71 13.5 16.8 80 Bear Trap Meadow 8200 5.0 4.8 104 9.8 9.6 102 Bone Springs Div 9350 13.2 18.0 73 12.7 16.7 76 Grave Springs 8550 7.4 8.4 88 10.4 10.7 97 Kirwin 9550 12.7 11.6 109 16.3 12.8 127 Marquette 8760 13.4 7.7 174 17.1 10.4 164 Middle Powder 7760 11.0 11.6 95 10.7 10.4 103 Owl Creek 8975 3.7 5.0 74 8.5 6.8 125 Powder River Pass 9480 5.9 10.4 57 12.0 13.6 88 Shell Creek 9580 13.0 16.2 80 13.8 14.5 95 Timber Creek 7950 6.7 5.2 129 12.7 8.8 144 ----- ----- Basin Index (%) 89 105 SHOSHONE RIVER Blackwater 9780 22.4 24.6 91 24.1 23.4 103 Evening Star 9200 20.1 25.9 78 27.0 29.2 92 Marquette 8760 13.4 7.7 174 17.1 10.4 164 Sylvan Lake 8420 14.8 20.2 73 23.6 24.3 97 Sylvan Road 7120 1.4 10.2 14 15.6 17.0 92 Younts Peak 8350 13.6 15.0 91 15.7 15.9 99 ----- ----- Basin Index (%) 83 102 POWDER RIVER Bear Trap Meadow 8200 5.0 4.8 104 9.8 9.6 102 Cloud Peak Reservoir 9860 11.5 15.1 76 15.0 14.6 103 Grave Springs 8550 7.4 8.4 88 10.4 10.7 97 Hansen Sawmill 8360 3.9 6.1 64 9.5 9.4 101 Middle Powder 7760 11.0 11.6 95 10.7 10.4 103 Powder River Pass 9480 5.9 10.4 57 12.0 13.6 88 Soldier Park 8720 2.2 6.6 33 10.1 10.4 97 ----- ----- Basin Index (%) 74 98 TONGUE RIVER Big Goose 7990 6.1 8.9 69 11.5 10.8 106 Bone Springs Div 9350 13.2 18.0 73 12.7 16.7 76 Burgess Junction 7880 8.6 11.6 74 12.6 13.2 95 Dome Lake 8880 -M 12.0 * 12.1 13.8 88 Little Goose 8870 7.9 10.6 75 13.3 13.5 99 Sucker Creek 8880 9.8 13.0 75 15.4 14.9 103 Tie Creek 6870 -M 4.6 * 12.8 12.0 107 ----- ----- Basin Index (%) 73 95 BELLE FOURCHE Blind Park 6890 .0 4.6 0 7.2 11.9 61 Cole Canyon 5910 .0 3.2 0 8.0 9.6 83 North Rapid Creek 6130 -M 5.2 * 9.7 9.6 101 ----- ----- Basin Index (%) 0 80 CHEYENNE RIVER BASIN Blind Park 6890 .0 4.6 0 7.2 11.9 61 North Rapid Creek 6130 -M 5.2 * 9.7 9.6 101 ----- ----- Basin Index (%) 0 79 UPPER N. PLATTE Arapaho Ridge 10976 22.1 23.2 95 22.7 23.0 99 Blackhall Mtn 9839 31.8 31.5 101 35.9 31.3 115 Cinnabar Park 9707 19.4 20.8 93 23.8 24.5 97 Columbine 9167 23.4 21.4 109 26.7 26.3 102 Divide Peak 8730 19.1 19.6 97 24.7 22.6 109 Joe Wright 10158 20.2 21.9 92 25.6 27.1 94 Laprele Creek 8390 -M 8.6 * -M 12.6 * Med Bow 10512 40.6 -M * 34.6 -M * Never Summer 10323 20.3 21.3 95 16.0 18.3 87 North French Creek 10153 26.8 31.6 85 28.3 28.3 100 Old Battle 9860 33.6 33.2 101 34.7 35.6 97 Rawah 9069 10.9 10.2 107 17.7 16.5 107 Sage Creek Basin 7850 10.5 9.9 106 15.6 13.5 116 Sand Lake 10098 30.7 30.0 102 29.8 26.6 112 South Brush Creek 8495 8.7 9.8 89 12.8 14.2 90 Tower 10620 42.3 45.1 94 41.5 41.2 101 Webber Springs 9260 22.3 22.2 100 26.9 26.7 101 Whiskey Park 9020 30.4 26.7 114 31.0 28.8 108 Willow Creek Pass 9523 15.0 14.4 104 15.9 14.6 109 Zirkel 9338 23.1 26.0 89 29.9 32.5 92 ----- ----- Basin Index (%) 98 102 SWEETWATER Deer Park 9700 17.5 15.8 111 21.2 19.5 109 Larsen Creek 9000 6.7 8.7 77 14.9 14.4 103 South Pass 9040 14.4 15.7 92 18.1 16.5 110 ----- ----- Basin Index (%) 96 108 LOWER N. PLATTE Casper Mtn. 7920 11.0 13.6 81 15.8 15.0 105 Laprele Creek 8390 -M 8.6 * -M 12.6 * Reno Hill 8430 10.2 14.0 73 15.5 16.6 93 Windy Peak 7915 8.6 7.5 115 11.5 11.0 105 ----- ----- Basin Index (%) 85 100 LARAMIE RIVER Brooklyn Lake 10250 23.9 22.0 109 26.3 23.4 112 Cinnabar Park 9707 19.4 20.8 93 23.8 24.5 97 Crow Creek 8335 3.3 4.5 73 10.6 11.2 95 Deadman Hill 10239 20.6 16.6 124 19.1 18.8 102 Rawah 9069 10.9 10.2 107 17.7 16.5 107 Roach 9740 13.8 16.0 86 18.1 20.0 90 Windy Peak 7915 8.6 7.5 115 11.5 11.0 105 ----- ----- Basin Index (%) 103 101 S. PLATTE Crow Creek 8335 3.3 4.5 73 10.6 11.2 95 ----- ----- Basin Index (%) 73 95 LITTLE SNAKE RIVER Battle Mountain 7498 7.3 7.1 103 19.1 16.0 119 Divide Peak 8730 19.1 19.6 97 24.7 22.6 109 Elk River 8739 15.7 16.6 95 21.0 20.4 103 Elkhead Divide 8800 21.1 -M * 25.0 -M * Little Snake River 8928 27.6 25.8 107 34.8 33.8 103 Old Battle 9860 33.6 33.2 101 34.7 35.6 97 Sage Creek Basin 7850 10.5 9.9 106 15.6 13.5 116 Sandstone RS 8152 13.6 11.5 118 18.7 18.5 101 Whiskey Park 9020 30.4 26.7 114 31.0 28.8 108 ----- ----- Basin Index (%) 105 105 UPPER GREEN RIVER Big Sandy Opening 9080 12.6 13.8 91 15.2 13.8 110 Blind Bull Sum 8650 23.7 24.9 95 16.8 18.2 92 East Rim Divide 7930 5.2 9.7 54 11.2 11.6 97 Elkhart Park G.S. 9400 10.4 12.9 81 12.8 13.0 98 Gros Ventre Summit 8750 11.5 13.0 88 13.9 13.0 107 Gunsight Pass 9820 13.0 13.3 98 15.3 14.6 105 Indian Creek 9425 22.1 24.8 89 20.6 20.2 102 Kendall R.S. 7740 6.6 10.0 66 13.2 13.5 98 Larsen Creek 9000 6.7 8.7 77 14.9 14.4 103 Loomis Park 8240 10.1 14.6 69 15.4 17.2 90 New Fork Lake 8340 6.1 9.8 62 -M 10.9 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 8.0 11.5 70 12.9 14.1 91 Spring Creek Divide 9000 24.3 25.2 96 22.5 24.4 92 Triple Peak 8500 21.3 22.0 97 25.1 25.8 97 ----- ----- Basin Index (%) 85 98 LOWER GREEN RIVER Blacks Fork Jct 8869 9.4 7.6 124 14.4 12.8 112 Buck Pasture 9632 14.6 -M * 17.0 -M * EF Blacks Fork GS 9360 9.8 11.6 84 10.6 11.8 90 Hams Fork 7840 -M 8.8 * 11.6 11.3 103 Henrys Fork 10182 -M -M * 14.2 -M * Hewinta 9500 10.3 9.4 110 15.4 14.2 108 Hickerson Park 9122 8.2 6.6 124 14.3 11.0 130 Hole-in-Rock 9168 7.5 6.5 115 11.4 10.7 107 Indian Creek 9425 22.1 24.8 89 20.6 20.2 102 Kelley R.S. 8180 14.9 14.6 102 18.1 16.9 107 Spirit Lk 10235 15.0 13.4 112 19.7 18.6 106 Steel Creek Park 10158 16.1 15.4 105 18.6 17.0 109 ----- ----- Basin Index (%) 103 107 UPPER BEAR RIVER Bear River RS 8777 8.0 6.4 125 14.8 12.6 117 Bug Lake 7987 20.2 18.5 109 23.5 18.6 126 Burts Miller Ranch 8000 5.0 2.1 238 12.5 8.4 149 Chalk Creek #1 9171 -M 23.6 * -M 24.0 * Giveout 6930 6.8 4.5 151 13.6 13.0 105 Hayden Fork 9130 14.0 14.0 100 23.8 21.7 110 Kelley R.S. 8180 14.9 14.6 102 18.1 16.9 107 Lily Lake 9133 12.8 12.7 101 16.4 16.0 102 Monte Cristo 8932 29.6 27.4 108 29.9 26.8 112 Salt River Summit 7640 13.5 11.5 117 15.4 16.7 92 Spring Creek Divide 9000 24.3 25.2 96 22.5 24.4 92 Trial Lake 9992 29.4 22.4 131 27.7 23.0 120 ----- ----- Basin Index (%) 112 110 ----------------------------------------------------------------------------- -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.