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 MONDAY: APRIL 1 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 16.3 16.6 98 20.5 19.6 105 Blind Bull Sum 8650 23.6 23.5 100 16.5 17.5 94 Cottonwood Creek 7670 21.2 21.5 99 25.4 24.4 104 East Rim Divide 7930 9.3 10.4 89 10.9 10.9 100 Grand Targhee 9260 38.3 40.8 94 25.9 29.9 87 Granite Creek 6770 15.7 15.8 99 16.5 17.8 93 Grassy Lake 7265 28.5 31.8 90 33.8 33.4 101 Gros Ventre Summit 8750 11.9 12.8 93 13.4 12.0 112 Gunsight Pass 9820 13.2 12.6 105 14.7 13.4 110 Lewis Lake Divide 7850 31.7 30.0 106 35.0 31.8 110 Loomis Park 8240 12.6 15.3 82 15.2 16.4 93 Phillips Bench 8200 25.4 25.9 98 27.8 26.1 107 Salt River Summit 7640 16.1 13.4 120 14.9 15.5 96 Snake River Station 6920 16.2 16.8 96 22.8 21.3 107 Somsen Ranch 6800 18.2 11.4 160 21.3 16.3 131 Spring Creek Divide 9000 23.1 24.2 95 22.0 23.1 95 Thumb Divide 7980 17.3 15.8 109 18.0 17.0 106 Togwotee Pass 9580 20.0 22.9 87 19.1 24.0 80 Triple Peak 8500 23.4 22.4 104 23.3 24.4 95 Two Ocean Plateau 9240 27.3 28.2 97 25.7 25.4 101 Willow Creek 8080 33.7 29.0 116 34.3 31.8 108 Younts Peak 8350 14.5 14.2 102 15.2 14.4 106 ----- ----- Basin Index (%) 100 101 MADISON HEADWATERS IN WYOMING Black Bear 8170 33.3 37.0 90 37.2 35.6 104 Canyon 7870 11.0 -M * 13.7 -M * Madison Plateau 7750 20.6 22.0 94 23.1 23.8 97 West Yellowstone 6700 9.1 10.2 89 13.7 13.6 101 Whiskey Creek 6800 13.9 15.2 91 19.9 19.2 104 ----- ----- Basin Index (%) 91 102 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 14.8 21.2 70 14.3 19.4 74 Canyon 7870 11.0 -M * 13.7 -M * Evening Star 9200 20.6 24.4 84 25.9 27.0 96 Fisher Creek 9100 22.5 32.0 70 24.9 31.6 79 Monument Peak 8850 14.7 19.8 74 17.6 20.8 85 Northeast Entrance 7350 6.3 9.4 67 10.3 12.4 83 Parker Peak 9400 19.8 20.0 99 21.3 19.3 110 Sylvan Lake 8420 16.0 19.1 84 22.3 22.4 100 Thumb Divide 7980 17.3 15.8 109 18.0 17.0 106 Two Ocean Plateau 9240 27.3 28.2 97 25.7 25.4 101 White Mill 8700 17.0 23.2 73 17.7 22.0 80 Wolverine 7650 9.6 11.0 87 13.2 12.0 110 ----- ----- Basin Index (%) 83 92 WIND RIVER Burroughs Creek 8750 11.8 -M * 11.9 -M * Castle Creek 8400 7.0 6.1 115 8.3 8.2 101 Cold Springs 9630 8.5 7.2 118 11.7 8.8 133 Deer Park 9700 18.9 14.0 135 21.1 17.0 124 Hobbs Park 10100 16.5 13.8 120 16.8 12.8 131 Kirwin 9550 13.5 10.4 130 15.8 11.6 136 Little Warm 9370 10.4 10.2 102 13.3 11.5 116 South Pass 9040 16.1 14.5 111 17.9 15.0 119 St. Lawrence Alt 8620 6.9 -M * 10.4 -M * Togwotee Pass 9580 20.0 22.9 87 19.1 24.0 80 Townsend Creek 8700 10.5 8.9 118 14.2 10.7 133 ----- ----- Basin Index (%) 112 116 BIGHORN BASIN Bald Mtn. 9380 12.5 18.8 66 11.8 15.4 77 Bear Trap Meadow 8200 4.8 6.0 80 7.9 7.8 101 Bone Springs Div 9350 12.3 16.4 75 11.5 14.8 78 Grave Springs 8550 5.0 8.2 61 7.4 8.9 83 Kirwin 9550 13.5 10.4 130 15.8 11.6 136 Marquette 8760 12.0 6.8 176 14.8 8.6 172 Middle Powder 7760 -M 10.5 * 7.7 9.6 80 Owl Creek 8975 5.7 5.5 104 7.2 5.8 124 Powder River Pass 9480 6.2 10.6 58 10.0 12.0 83 Shell Creek 9580 11.4 14.8 77 12.1 13.3 91 Timber Creek 7950 8.1 4.6 176 12.1 7.6 159 ----- ----- Basin Index (%) 90 103 SHOSHONE RIVER Blackwater 9780 22.2 22.0 101 23.0 21.0 110 Evening Star 9200 20.6 24.4 84 25.9 27.0 96 Marquette 8760 12.0 6.8 176 14.8 8.6 172 Sylvan Lake 8420 16.0 19.1 84 22.3 22.4 100 Sylvan Road 7120 7.7 10.6 73 15.1 15.6 97 Younts Peak 8350 14.5 14.2 102 15.2 14.4 106 ----- ----- Basin Index (%) 96 107 POWDER RIVER Bear Trap Meadow 8200 4.8 6.0 80 7.9 7.8 101 Cloud Peak Reservoir 9860 11.4 14.1 81 13.2 12.7 104 Grave Springs 8550 5.0 8.2 61 7.4 8.9 83 Hansen Sawmill 8360 5.4 6.6 82 8.2 8.1 101 Middle Powder 7760 -M 10.5 * 7.7 9.6 80 Powder River Pass 9480 6.2 10.6 58 10.0 12.0 83 Soldier Park 8720 4.3 7.2 60 9.4 8.8 107 ----- ----- Basin Index (%) 70 94 TONGUE RIVER Big Goose 7990 5.9 8.0 74 10.0 9.4 106 Bone Springs Div 9350 12.3 16.4 75 11.5 14.8 78 Burgess Junction 7880 -M 10.2 * 10.8 11.2 96 Dome Lake 8880 -M 11.2 * 10.4 12.0 87 Little Goose 8870 7.8 9.3 84 11.1 11.4 97 Sucker Creek 8880 9.2 11.4 81 12.9 13.0 99 Tie Creek 6870 2.4 5.0 48 11.4 10.3 111 ----- ----- Basin Index (%) 75 95 BELLE FOURCHE Blind Park 6890 .1 7.0 1 6.1 10.4 59 Cole Canyon 5910 2.3 5.2 44 5.7 8.6 66 North Rapid Creek 6130 4.9 6.6 74 6.9 8.4 82 ----- ----- Basin Index (%) 39 68 CHEYENNE RIVER BASIN Blind Park 6890 .1 7.0 1 6.1 10.4 59 North Rapid Creek 6130 4.9 6.6 74 6.9 8.4 82 ----- ----- Basin Index (%) 37 69 UPPER N. PLATTE Arapaho Ridge 10976 21.1 21.0 100 21.0 21.1 100 Blackhall Mtn 9839 32.5 30.2 108 33.8 28.8 117 Cinnabar Park 9707 20.1 20.0 100 22.5 22.8 99 Columbine 9167 27.0 22.0 123 25.3 23.4 108 Divide Peak 8730 21.6 19.4 111 24.1 21.1 114 Joe Wright 10158 18.6 19.6 95 22.8 25.2 90 Laprele Creek 8390 7.2 9.4 77 10.4 11.4 91 Med Bow 10512 37.5 -M * 32.1 -M * Never Summer 10323 18.7 19.7 95 14.4 16.4 88 North French Creek 10153 26.4 27.6 96 26.3 25.9 102 Old Battle 9860 32.5 29.7 109 33.0 32.4 102 Rawah 9069 12.5 10.6 118 15.9 14.8 107 Sage Creek Basin 7850 16.0 13.2 121 15.4 12.5 123 Sand Lake 10098 29.2 26.6 110 27.9 24.0 116 South Brush Creek 8495 10.7 11.9 90 12.0 13.4 90 Tower 10620 40.3 42.0 96 36.7 38.2 96 Webber Springs 9260 24.1 21.8 111 25.8 24.8 104 Whiskey Park 9020 31.8 25.4 125 29.5 26.6 111 Willow Creek Pass 9523 14.0 12.6 111 14.7 13.2 111 Zirkel 9338 26.1 27.6 95 28.2 30.0 94 ----- ----- Basin Index (%) 105 103 SWEETWATER Deer Park 9700 18.9 14.0 135 21.1 17.0 124 Larsen Creek 9000 9.7 10.0 97 14.8 13.2 112 South Pass 9040 16.1 14.5 111 17.9 15.0 119 ----- ----- Basin Index (%) 116 119 LOWER N. PLATTE Casper Mtn. 7920 9.8 13.0 75 13.6 13.3 102 Laprele Creek 8390 7.2 9.4 77 10.4 11.4 91 Reno Hill 8430 9.4 13.8 68 13.2 14.4 92 Windy Peak 7915 8.4 7.8 108 9.8 9.8 100 ----- ----- Basin Index (%) 79 96 LARAMIE RIVER Brooklyn Lake 10250 24.4 20.6 118 24.6 21.0 117 Cinnabar Park 9707 20.1 20.0 100 22.5 22.8 99 Crow Creek 8335 5.5 6.0 92 10.0 10.1 99 Deadman Hill 10239 19.2 15.8 122 18.0 17.0 106 Rawah 9069 12.5 10.6 118 15.9 14.8 107 Roach 9740 15.1 15.0 101 17.4 18.2 96 Windy Peak 7915 8.4 7.8 108 9.8 9.8 100 ----- ----- Basin Index (%) 110 104 S. PLATTE Crow Creek 8335 5.5 6.0 92 10.0 10.1 99 ----- ----- Basin Index (%) 92 99 LITTLE SNAKE RIVER Battle Mountain 7498 12.2 11.0 111 18.5 14.4 128 Divide Peak 8730 21.6 19.4 111 24.1 21.1 114 Elk River 8739 19.2 17.8 108 19.7 18.2 108 Elkhead Divide 8800 23.2 -M * 23.6 -M * Little Snake River 8928 29.6 25.5 116 32.8 31.1 105 Old Battle 9860 32.5 29.7 109 33.0 32.4 102 Sage Creek Basin 7850 16.0 13.2 121 15.4 12.5 123 Sandstone RS 8152 18.9 12.6 150 18.1 17.2 105 Whiskey Park 9020 31.8 25.4 125 29.5 26.6 111 ----- ----- Basin Index (%) 118 110 UPPER GREEN RIVER Big Sandy Opening 9080 14.0 13.0 108 14.9 12.3 121 Blind Bull Sum 8650 23.6 23.5 100 16.5 17.5 94 East Rim Divide 7930 9.3 10.4 89 10.9 10.9 100 Elkhart Park G.S. 9400 11.4 12.2 93 12.3 12.4 99 Gros Ventre Summit 8750 11.9 12.8 93 13.4 12.0 112 Gunsight Pass 9820 13.2 12.6 105 14.7 13.4 110 Indian Creek 9425 23.7 23.3 102 20.2 19.4 104 Kendall R.S. 7740 9.5 11.4 83 12.9 13.0 99 Larsen Creek 9000 9.7 10.0 97 14.8 13.2 112 Loomis Park 8240 12.6 15.3 82 15.2 16.4 93 New Fork Lake 8340 9.0 10.3 87 6.3 10.4 61 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 10.3 12.4 83 12.7 13.8 92 Spring Creek Divide 9000 23.1 24.2 95 22.0 23.1 95 Triple Peak 8500 23.4 22.4 104 23.3 24.4 95 ----- ----- Basin Index (%) 96 99 LOWER GREEN RIVER Blacks Fork Jct 8869 11.5 8.9 129 14.0 12.2 115 Buck Pasture 9632 15.9 -M * 16.0 -M * EF Blacks Fork GS 9360 11.8 11.3 104 10.1 10.8 94 Hams Fork 7840 -M 10.9 * 11.6 10.8 107 Henrys Fork 10182 -M -M * 13.6 -M * Hewinta 9500 12.9 9.8 132 14.8 12.8 116 Hickerson Park 9122 11.4 7.6 150 13.8 9.8 141 Hole-in-Rock 9168 9.4 7.0 134 10.9 9.5 115 Indian Creek 9425 23.7 23.3 102 20.2 19.4 104 Kelley R.S. 8180 17.2 14.6 118 17.7 15.6 113 Spirit Lk 10235 15.7 12.7 124 19.0 15.9 119 Steel Creek Park 10158 15.6 13.8 113 17.8 15.8 113 ----- ----- Basin Index (%) 119 113 UPPER BEAR RIVER Bear River RS 8777 13.0 9.6 135 14.6 11.6 126 Bug Lake 7987 23.0 18.6 124 23.2 17.6 132 Burts Miller Ranch 8000 9.4 5.5 171 12.6 7.1 177 Chalk Creek #1 9171 24.9 22.6 110 24.7 22.3 111 Giveout 6930 11.8 8.2 144 13.1 11.6 113 Hayden Fork 9130 19.4 14.6 133 23.0 19.8 116 Kelley R.S. 8180 17.2 14.6 118 17.7 15.6 113 Lily Lake 9133 14.3 12.2 117 15.9 14.6 109 Monte Cristo 8932 30.3 26.4 115 28.3 25.6 111 Salt River Summit 7640 16.1 13.4 120 14.9 15.5 96 Spring Creek Divide 9000 23.1 24.2 95 22.0 23.1 95 Trial Lake 9992 28.5 21.5 133 26.6 21.8 122 ----- ----- Basin Index (%) 121 115 ----------------------------------------------------------------------------- -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.