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: FEBRUARY 20 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 11.1 14.0 79 14.7 15.7 94 Blind Bull Sum 8650 16.3 17.8 92 11.5 13.7 84 Cottonwood Creek 7670 16.5 16.2 102 19.4 18.6 104 East Rim Divide 7930 6.8 8.0 85 8.0 8.4 95 Grand Targhee 9260 28.5 31.8 90 22.4 24.8 90 Granite Creek 6770 10.2 13.4 76 11.4 15.2 75 Grassy Lake 7265 19.3 24.4 79 25.1 26.6 94 Gros Ventre Summit 8750 7.6 9.2 83 9.1 8.7 105 Gunsight Pass 9820 9.1 9.4 97 11.2 10.4 108 Lewis Lake Divide 7850 20.5 22.2 92 24.8 25.4 98 Loomis Park 8240 9.5 11.4 83 10.7 12.6 85 Phillips Bench 8200 16.8 19.5 86 19.6 20.2 97 Salt River Summit 7640 11.1 10.1 110 10.8 11.6 93 Snake River Station 6920 11.5 13.7 84 17.1 16.8 102 Somsen Ranch 6800 12.2 9.8 124 16.2 12.6 129 Spring Creek Divide 9000 16.6 18.0 92 16.7 18.0 93 Thumb Divide 7980 10.3 11.5 90 11.7 12.7 92 Togwotee Pass 9580 13.4 17.2 78 13.1 18.4 71 Triple Peak 8500 15.6 16.8 93 17.2 18.8 91 Two Ocean Plateau 9240 17.5 21.6 81 17.9 18.9 95 Willow Creek 8080 22.5 21.2 106 24.6 23.7 104 Younts Peak 8350 8.7 11.0 79 10.5 11.0 95 ----- ----- Basin Index (%) 89 95 MADISON HEADWATERS IN WYOMING Black Bear 8170 21.7 27.6 79 26.5 26.2 101 Canyon 7870 7.0 -M * 9.6 -M * Madison Plateau 7750 12.9 16.2 80 16.2 17.5 93 West Yellowstone 6700 5.4 8.4 64 9.6 10.6 91 Whiskey Creek 6800 8.7 11.3 77 14.2 13.6 104 ----- ----- Basin Index (%) 77 98 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 10.1 16.8 60 9.9 15.6 63 Canyon 7870 7.0 -M * 9.6 -M * Evening Star 9200 14.0 20.3 69 19.8 21.9 90 Fisher Creek 9100 13.1 25.0 52 16.2 24.2 67 Monument Peak 8850 9.4 15.4 61 12.4 16.4 76 Northeast Entrance 7350 3.4 7.8 44 6.8 10.2 67 Parker Peak 9400 13.4 15.9 84 15.3 15.0 102 Sylvan Lake 8420 10.8 14.4 75 16.4 17.4 94 Thumb Divide 7980 10.3 11.5 90 11.7 12.7 92 Two Ocean Plateau 9240 17.5 21.6 81 17.9 18.9 95 White Mill 8700 10.8 17.8 61 11.9 17.0 70 Wolverine 7650 7.5 9.1 82 10.5 9.4 112 ----- ----- Basin Index (%) 69 83 WIND RIVER Burroughs Creek 8750 8.5 -M * 8.7 -M * Castle Creek 8400 5.2 5.2 100 6.3 6.4 98 Cold Springs 9630 6.0 5.6 107 8.6 6.7 128 Deer Park 9700 12.3 9.6 128 14.2 12.2 116 Hobbs Park 10100 11.0 9.2 120 12.0 8.1 148 Kirwin 9550 8.8 7.6 116 11.2 8.4 133 Little Warm 9370 6.8 7.4 92 9.4 8.6 109 South Pass 9040 10.4 10.2 102 12.2 10.2 120 St. Lawrence Alt 8620 4.1 -M * 7.2 -M * Togwotee Pass 9580 13.4 17.2 78 13.1 18.4 71 Townsend Creek 8700 6.4 6.1 105 9.8 7.6 129 ----- ----- Basin Index (%) 103 112 BIGHORN BASIN Bald Mtn. 9380 9.1 13.7 66 8.8 11.4 77 Bear Trap Meadow 8200 2.8 4.6 61 5.6 5.8 97 Bone Springs Div 9350 8.0 11.4 70 8.4 10.9 77 Grave Springs 8550 3.0 5.8 52 5.2 6.6 79 Kirwin 9550 8.8 7.6 116 11.2 8.4 133 Marquette 8760 8.9 4.8 185 11.7 6.4 183 Middle Powder 7760 -M 7.0 * 5.8 6.7 87 Owl Creek 8975 -M 3.9 * -M 4.4 * Powder River Pass 9480 4.6 7.9 58 7.8 9.2 85 Shell Creek 9580 8.6 10.8 80 9.4 9.8 96 Timber Creek 7950 6.0 3.2 188 9.9 5.3 187 ----- ----- Basin Index (%) 86 104 SHOSHONE RIVER Blackwater 9780 15.4 16.4 94 15.9 16.0 99 Evening Star 9200 14.0 20.3 69 19.8 21.9 90 Marquette 8760 8.9 4.8 185 11.7 6.4 183 Sylvan Lake 8420 10.8 14.4 75 16.4 17.4 94 Sylvan Road 7120 5.5 9.0 61 12.0 13.3 90 Younts Peak 8350 8.7 11.0 79 10.5 11.0 95 ----- ----- Basin Index (%) 83 100 POWDER RIVER Bear Trap Meadow 8200 2.8 4.6 61 5.6 5.8 97 Cloud Peak Reservoir 9860 8.2 10.2 80 9.9 9.5 104 Grave Springs 8550 3.0 5.8 52 5.2 6.6 79 Hansen Sawmill 8360 2.9 4.8 60 5.8 5.8 100 Middle Powder 7760 -M 7.0 * 5.8 6.7 87 Powder River Pass 9480 4.6 7.9 58 7.8 9.2 85 Soldier Park 8720 2.5 4.7 53 7.2 6.6 109 ----- ----- Basin Index (%) 63 94 TONGUE RIVER Big Goose 7990 -M 5.8 * 7.3 7.2 101 Bone Springs Div 9350 8.0 11.4 70 8.4 10.9 77 Burgess Junction 7880 4.6 7.6 61 8.1 8.6 94 Dome Lake 8880 -M 8.0 * 7.1 8.6 83 Little Goose 8870 5.1 6.9 74 8.4 8.6 98 Sucker Creek 8880 6.4 8.8 73 9.7 9.6 101 Tie Creek 6870 -M 4.1 * 9.0 7.8 115 ----- ----- Basin Index (%) 69 95 BELLE FOURCHE Blind Park 6890 2.8 5.8 48 4.9 7.9 62 Cole Canyon 5910 2.3 4.2 55 4.2 6.4 66 North Rapid Creek 6130 4.6 5.4 85 5.9 6.5 91 ----- ----- Basin Index (%) 63 72 CHEYENNE RIVER BASIN Blind Park 6890 2.8 5.8 48 4.9 7.9 62 North Rapid Creek 6130 4.6 5.4 85 5.9 6.5 91 ----- ----- Basin Index (%) 66 75 UPPER N. PLATTE Arapaho Ridge 10976 15.2 16.7 91 15.3 16.6 92 Blackhall Mtn 9839 22.8 21.5 106 24.2 21.5 113 Cinnabar Park 9707 11.4 16.0 71 13.6 17.8 76 Columbine 9167 18.7 17.4 107 18.6 17.8 104 Divide Peak 8730 13.2 14.2 93 16.8 16.0 105 Joe Wright 10158 11.2 14.6 77 15.4 18.6 83 Laprele Creek 8390 5.1 6.6 77 7.8 8.0 98 Med Bow 10512 24.2 -M * 22.8 -M * Never Summer 10323 12.2 14.6 84 9.2 12.0 77 North French Creek 10153 17.0 19.8 86 17.6 18.9 93 Old Battle 9860 20.6 23.0 90 21.5 25.0 86 Rawah 9069 7.4 8.5 87 10.5 11.9 88 Sage Creek Basin 7850 9.1 11.3 81 10.6 10.1 105 Sand Lake 10098 17.2 19.0 91 17.0 17.0 100 South Brush Creek 8495 6.2 8.8 70 7.6 9.8 78 Tower 10620 29.8 31.9 93 28.1 29.4 96 Webber Springs 9260 15.4 16.0 96 16.5 18.8 88 Whiskey Park 9020 22.3 20.0 112 22.3 21.2 105 Willow Creek Pass 9523 9.2 10.0 92 10.4 10.2 102 Zirkel 9338 18.1 21.4 85 20.3 23.6 86 ----- ----- Basin Index (%) 91 94 SWEETWATER Deer Park 9700 12.3 9.6 128 14.2 12.2 116 Larsen Creek 9000 6.3 7.8 81 10.2 9.7 105 South Pass 9040 10.4 10.2 102 12.2 10.2 120 ----- ----- Basin Index (%) 105 114 LOWER N. PLATTE Casper Mtn. 7920 5.9 9.0 66 10.4 9.4 111 Laprele Creek 8390 5.1 6.6 77 7.8 8.0 98 Reno Hill 8430 6.4 9.4 68 10.3 10.2 101 Windy Peak 7915 5.3 5.6 95 6.6 7.2 92 ----- ----- Basin Index (%) 74 101 LARAMIE RIVER Brooklyn Lake 10250 15.0 15.4 97 15.8 15.7 101 Cinnabar Park 9707 11.4 16.0 71 13.6 17.8 76 Crow Creek 8335 2.4 5.7 42 6.0 7.5 80 Deadman Hill 10239 11.2 12.4 90 10.6 12.4 85 Rawah 9069 7.4 8.5 87 10.5 11.9 88 Roach 9740 8.2 11.6 71 10.2 13.8 74 Windy Peak 7915 5.3 5.6 95 6.6 7.2 92 ----- ----- Basin Index (%) 81 85 S. PLATTE Crow Creek 8335 2.4 5.7 42 6.0 7.5 80 ----- ----- Basin Index (%) 42 80 LITTLE SNAKE RIVER Battle Mountain 7498 8.5 8.9 96 13.2 11.4 116 Divide Peak 8730 13.2 14.2 93 16.8 16.0 105 Elk River 8739 13.0 14.1 92 13.9 14.4 97 Elkhead Divide 8800 16.4 -M * 17.9 -M * Little Snake River 8928 20.8 20.4 102 24.1 26.3 92 Old Battle 9860 20.6 23.0 90 21.5 25.0 86 Sage Creek Basin 7850 9.1 11.3 81 10.6 10.1 105 Sandstone RS 8152 12.8 9.9 129 12.5 13.4 93 Whiskey Park 9020 22.3 20.0 112 22.3 21.2 105 ----- ----- Basin Index (%) 99 98 UPPER GREEN RIVER Big Sandy Opening 9080 9.1 9.4 97 9.9 9.1 109 Blind Bull Sum 8650 16.3 17.8 92 11.5 13.7 84 East Rim Divide 7930 6.8 8.0 85 8.0 8.4 95 Elkhart Park G.S. 9400 7.3 9.0 81 8.7 9.4 93 Gros Ventre Summit 8750 7.6 9.2 83 9.1 8.7 105 Gunsight Pass 9820 9.1 9.4 97 11.2 10.4 108 Indian Creek 9425 16.4 16.8 98 14.6 14.6 100 Kendall R.S. 7740 6.9 9.4 73 9.7 10.3 94 Larsen Creek 9000 6.3 7.8 81 10.2 9.7 105 Loomis Park 8240 9.5 11.4 83 10.7 12.6 85 New Fork Lake 8340 6.5 8.0 81 4.4 8.0 55 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.2 9.8 73 9.2 10.2 90 Spring Creek Divide 9000 16.6 18.0 92 16.7 18.0 93 Triple Peak 8500 15.6 16.8 93 17.2 18.8 91 ----- ----- Basin Index (%) 88 93 LOWER GREEN RIVER Blacks Fork Jct 8869 8.5 6.2 137 10.6 9.4 113 Buck Pasture 9632 11.0 -M * 11.9 -M * EF Blacks Fork GS 9360 6.4 8.0 80 7.6 8.0 95 Hams Fork 7840 -M 8.5 * 8.2 8.1 101 Henrys Fork 10182 -M -M * 9.4 -M * Hewinta 9500 8.2 6.9 119 11.3 9.9 114 Hickerson Park 9122 6.6 5.4 122 9.0 7.4 122 Hole-in-Rock 9168 6.0 5.1 118 7.3 7.1 103 Indian Creek 9425 16.4 16.8 98 14.6 14.6 100 Kelley R.S. 8180 12.2 10.8 113 13.0 12.4 105 Spirit Lk 10235 9.2 8.4 110 12.9 11.8 109 Steel Creek Park 10158 10.7 10.4 103 13.0 11.8 110 ----- ----- Basin Index (%) 108 107 UPPER BEAR RIVER Bear River RS 8777 8.0 7.0 114 10.2 8.8 116 Bug Lake 7987 17.5 14.1 124 17.4 13.8 126 Burts Miller Ranch 8000 6.2 5.0 124 9.6 5.5 175 Chalk Creek #1 9171 -M 16.0 * -M 16.8 * Giveout 6930 8.0 7.7 104 9.6 9.2 104 Hayden Fork 9130 12.8 11.2 114 16.9 15.0 113 Kelley R.S. 8180 12.2 10.8 113 13.0 12.4 105 Lily Lake 9133 10.2 9.5 107 11.6 11.5 101 Monte Cristo 8932 21.3 19.2 111 21.0 18.8 112 Salt River Summit 7640 11.1 10.1 110 10.8 11.6 93 Spring Creek Divide 9000 16.6 18.0 92 16.7 18.0 93 Trial Lake 9992 17.6 16.4 107 18.4 16.8 110 ----- ----- Basin Index (%) 110 110 ----------------------------------------------------------------------------- -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.