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: FEBRUARY 28 , 2024 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 11.8 14.8 80 15.5 16.8 92 Blind Bull Sum 8650 16.9 19.2 88 11.8 15.0 79 Cottonwood Creek 7670 17.7 17.4 102 20.8 19.4 107 East Rim Divide 7930 6.9 8.8 78 8.2 9.2 89 Grand Targhee 9260 29.5 33.0 89 23.2 25.8 90 Granite Creek 6770 10.6 14.2 75 11.8 15.8 75 Grassy Lake 7265 20.4 26.0 78 26.3 28.3 93 Gros Ventre Summit 8750 7.9 9.4 84 10.0 9.4 106 Gunsight Pass 9820 9.4 10.4 90 11.4 10.9 105 Lewis Lake Divide 7850 22.1 24.6 90 26.2 26.6 98 Loomis Park 8240 9.8 12.5 78 11.1 13.8 80 Phillips Bench 8200 17.5 20.4 86 20.4 21.6 94 Salt River Summit 7640 11.7 10.7 109 11.1 12.6 88 Snake River Station 6920 12.2 14.3 85 17.8 17.3 103 Somsen Ranch 6800 12.8 10.8 119 16.7 13.2 127 Spring Creek Divide 9000 17.3 19.4 89 17.5 19.1 92 Thumb Divide 7980 11.9 12.6 94 12.7 13.4 95 Togwotee Pass 9580 14.2 18.5 77 13.8 19.8 70 Triple Peak 8500 17.1 18.8 91 18.4 20.5 90 Two Ocean Plateau 9240 19.3 22.6 85 18.8 20.4 92 Willow Creek 8080 24.1 23.0 105 25.6 25.7 100 Younts Peak 8350 9.6 11.7 82 10.9 11.4 96 ----- ----- Basin Index (%) 89 93 MADISON HEADWATERS IN WYOMING Black Bear 8170 23.3 29.6 79 27.5 28.2 98 Canyon 7870 7.2 -M * 9.6 -M * Madison Plateau 7750 13.7 17.2 80 16.9 19.8 85 West Yellowstone 6700 5.8 9.0 64 10.1 11.0 92 Whiskey Creek 6800 9.1 12.0 76 14.8 15.4 96 ----- ----- Basin Index (%) 77 93 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 10.8 17.8 61 10.6 16.4 65 Canyon 7870 7.2 -M * 9.6 -M * Evening Star 9200 15.8 21.7 73 20.9 23.7 88 Fisher Creek 9100 15.3 26.2 58 17.6 25.6 69 Monument Peak 8850 10.1 16.4 62 13.0 16.9 77 Northeast Entrance 7350 3.5 8.6 41 7.2 10.8 67 Parker Peak 9400 14.5 17.0 85 16.3 15.6 104 Sylvan Lake 8420 11.8 15.6 76 17.6 18.2 97 Thumb Divide 7980 11.9 12.6 94 12.7 13.4 95 Two Ocean Plateau 9240 19.3 22.6 85 18.8 20.4 92 White Mill 8700 11.4 19.0 60 12.4 18.4 67 Wolverine 7650 7.6 9.8 78 10.7 10.1 106 ----- ----- Basin Index (%) 70 83 WIND RIVER Burroughs Creek 8750 8.5 -M * 8.9 -M * Castle Creek 8400 5.1 6.1 84 6.2 6.9 90 Cold Springs 9630 6.0 5.7 105 8.8 6.8 129 Deer Park 9700 12.4 10.1 123 14.4 13.1 110 Hobbs Park 10100 11.4 9.8 116 12.2 8.6 142 Kirwin 9550 9.0 8.5 106 11.6 9.0 129 Little Warm 9370 7.0 7.8 90 9.2 9.2 100 South Pass 9040 10.8 11.3 96 12.4 11.2 111 St. Lawrence Alt 8620 3.8 -M * 7.2 -M * Togwotee Pass 9580 14.2 18.5 77 13.8 19.8 70 Townsend Creek 8700 6.5 6.5 100 9.9 8.1 122 ----- ----- Basin Index (%) 98 106 BIGHORN BASIN Bald Mtn. 9380 9.1 14.4 63 8.7 12.4 70 Bear Trap Meadow 8200 3.1 4.8 65 5.5 6.2 89 Bone Springs Div 9350 8.0 12.6 63 8.4 12.4 68 Grave Springs 8550 3.0 6.5 46 5.3 6.8 78 Kirwin 9550 9.0 8.5 106 11.6 9.0 129 Marquette 8760 8.8 5.0 176 11.7 6.6 177 Middle Powder 7760 4.0 7.8 51 6.0 6.8 88 Owl Creek 8975 -M 4.2 * -M 4.7 * Powder River Pass 9480 4.8 8.5 56 8.1 9.6 84 Shell Creek 9580 9.0 11.7 77 9.7 10.7 91 Timber Creek 7950 6.2 3.4 182 9.9 5.6 177 ----- ----- Basin Index (%) 78 99 SHOSHONE RIVER Blackwater 9780 16.4 17.2 95 17.0 16.9 101 Evening Star 9200 15.8 21.7 73 20.9 23.7 88 Marquette 8760 8.8 5.0 176 11.7 6.6 177 Sylvan Lake 8420 11.8 15.6 76 17.6 18.2 97 Sylvan Road 7120 6.0 10.2 59 12.6 13.8 91 Younts Peak 8350 9.6 11.7 82 10.9 11.4 96 ----- ----- Basin Index (%) 84 100 POWDER RIVER Bear Trap Meadow 8200 3.1 4.8 65 5.5 6.2 89 Cloud Peak Reservoir 9860 8.6 11.4 75 10.2 10.2 100 Grave Springs 8550 3.0 6.5 46 5.3 6.8 78 Hansen Sawmill 8360 3.1 5.1 61 5.9 6.0 98 Middle Powder 7760 4.0 7.8 51 6.0 6.8 88 Powder River Pass 9480 4.8 8.5 56 8.1 9.6 84 Soldier Park 8720 2.5 5.2 48 7.4 7.0 106 ----- ----- Basin Index (%) 59 92 TONGUE RIVER Big Goose 7990 3.6 6.0 60 7.8 7.8 100 Bone Springs Div 9350 8.0 12.6 63 8.4 12.4 68 Burgess Junction 7880 4.7 8.0 59 8.2 9.2 89 Dome Lake 8880 -M 8.6 * 7.5 9.4 80 Little Goose 8870 5.4 7.4 73 8.4 9.3 90 Sucker Creek 8880 6.6 9.3 71 9.9 10.4 95 Tie Creek 6870 1.2 4.4 27 9.2 8.4 110 ----- ----- Basin Index (%) 62 89 BELLE FOURCHE Blind Park 6890 2.8 6.6 42 4.6 8.6 53 Cole Canyon 5910 2.0 4.7 43 4.0 7.2 56 North Rapid Creek 6130 4.5 5.8 78 5.8 7.1 82 ----- ----- Basin Index (%) 54 63 CHEYENNE RIVER BASIN Blind Park 6890 2.8 6.6 42 4.6 8.6 53 North Rapid Creek 6130 4.5 5.8 78 5.8 7.1 82 ----- ----- Basin Index (%) 59 66 UPPER N. PLATTE Arapaho Ridge 10976 16.2 17.2 94 16.3 17.0 96 Blackhall Mtn 9839 25.8 22.1 117 26.8 22.2 121 Cinnabar Park 9707 13.1 16.9 78 15.5 19.5 79 Columbine 9167 21.0 18.8 112 20.3 18.9 107 Divide Peak 8730 15.5 15.0 103 18.8 16.7 113 Joe Wright 10158 13.1 16.2 81 17.4 20.4 85 Laprele Creek 8390 5.6 7.2 78 8.3 8.4 99 Med Bow 10512 27.8 -M * 25.7 -M * Never Summer 10323 13.5 16.0 84 9.9 13.2 75 North French Creek 10153 19.6 22.0 89 20.1 21.0 96 Old Battle 9860 24.3 24.2 100 24.6 26.8 92 Rawah 9069 8.2 9.0 91 11.6 12.3 94 Sage Creek Basin 7850 10.5 11.4 92 12.1 10.7 113 Sand Lake 10098 20.2 21.0 96 19.5 18.0 108 South Brush Creek 8495 7.4 9.3 80 8.7 10.8 81 Tower 10620 33.0 35.1 94 30.8 32.3 95 Webber Springs 9260 18.1 16.7 108 19.2 20.1 96 Whiskey Park 9020 24.6 21.2 116 24.2 21.8 111 Willow Creek Pass 9523 10.0 10.5 95 11.1 10.6 105 Zirkel 9338 20.8 22.5 92 22.8 24.7 92 ----- ----- Basin Index (%) 96 98 SWEETWATER Deer Park 9700 12.4 10.1 123 14.4 13.1 110 Larsen Creek 9000 6.5 9.3 70 10.4 10.6 98 South Pass 9040 10.8 11.3 96 12.4 11.2 111 ----- ----- Basin Index (%) 97 107 LOWER N. PLATTE Casper Mtn. 7920 6.3 9.5 66 10.6 10.2 104 Laprele Creek 8390 5.6 7.2 78 8.3 8.4 99 Reno Hill 8430 6.6 9.8 67 10.7 10.6 101 Windy Peak 7915 5.5 6.0 92 6.9 7.4 93 ----- ----- Basin Index (%) 74 100 LARAMIE RIVER Brooklyn Lake 10250 17.7 16.2 109 18.2 17.0 107 Cinnabar Park 9707 13.1 16.9 78 15.5 19.5 79 Crow Creek 8335 2.5 5.9 42 6.3 7.8 81 Deadman Hill 10239 12.4 13.2 94 11.8 13.0 91 Rawah 9069 8.2 9.0 91 11.6 12.3 94 Roach 9740 9.3 12.1 77 11.3 14.8 76 Windy Peak 7915 5.5 6.0 92 6.9 7.4 93 ----- ----- Basin Index (%) 87 89 S. PLATTE Crow Creek 8335 2.5 5.9 42 6.3 7.8 81 ----- ----- Basin Index (%) 42 81 LITTLE SNAKE RIVER Battle Mountain 7498 9.8 10.0 98 14.7 12.2 120 Divide Peak 8730 15.5 15.0 103 18.8 16.7 113 Elk River 8739 14.6 14.8 99 15.2 15.0 101 Elkhead Divide 8800 18.2 -M * 19.4 -M * Little Snake River 8928 23.7 21.8 109 26.9 27.0 100 Old Battle 9860 24.3 24.2 100 24.6 26.8 92 Sage Creek Basin 7850 10.5 11.4 92 12.1 10.7 113 Sandstone RS 8152 15.0 10.2 147 14.3 14.6 98 Whiskey Park 9020 24.6 21.2 116 24.2 21.8 111 ----- ----- Basin Index (%) 107 104 UPPER GREEN RIVER Big Sandy Opening 9080 9.4 10.2 92 10.2 10.0 102 Blind Bull Sum 8650 16.9 19.2 88 11.8 15.0 79 East Rim Divide 7930 6.9 8.8 78 8.2 9.2 89 Elkhart Park G.S. 9400 7.4 9.6 77 8.9 10.0 89 Gros Ventre Summit 8750 7.9 9.4 84 10.0 9.4 106 Gunsight Pass 9820 9.4 10.4 90 11.4 10.9 105 Indian Creek 9425 17.7 18.8 94 15.5 15.8 98 Kendall R.S. 7740 7.1 9.6 74 10.0 10.6 94 Larsen Creek 9000 6.5 9.3 70 10.4 10.6 98 Loomis Park 8240 9.8 12.5 78 11.1 13.8 80 New Fork Lake 8340 6.6 8.6 77 -M 8.2 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.7 10.6 73 9.8 11.2 88 Spring Creek Divide 9000 17.3 19.4 89 17.5 19.1 92 Triple Peak 8500 17.1 18.8 91 18.4 20.5 90 ----- ----- Basin Index (%) 84 92 LOWER GREEN RIVER Blacks Fork Jct 8869 9.3 6.6 141 11.4 9.5 120 Buck Pasture 9632 12.2 -M * 12.9 -M * EF Blacks Fork GS 9360 7.1 8.4 85 8.3 8.4 99 Hams Fork 7840 -M 9.1 * 9.0 8.7 103 Henrys Fork 10182 -M -M * 10.5 -M * Hewinta 9500 9.7 7.8 124 12.3 10.3 119 Hickerson Park 9122 6.9 6.0 115 9.6 7.9 122 Hole-in-Rock 9168 6.3 5.6 112 7.6 7.6 100 Indian Creek 9425 17.7 18.8 94 15.5 15.8 98 Kelley R.S. 8180 13.2 12.0 110 13.9 13.2 105 Spirit Lk 10235 9.9 9.3 106 13.6 12.5 109 Steel Creek Park 10158 12.2 11.3 108 14.4 12.4 116 ----- ----- Basin Index (%) 108 109 UPPER BEAR RIVER Bear River RS 8777 9.2 7.4 124 11.3 9.2 123 Bug Lake 7987 19.4 14.8 131 19.0 14.4 132 Burts Miller Ranch 8000 7.2 5.0 144 10.4 5.7 182 Chalk Creek #1 9171 17.8 17.4 102 19.5 17.4 112 Giveout 6930 8.2 7.8 105 10.1 9.7 104 Hayden Fork 9130 14.2 11.7 121 18.2 16.1 113 Kelley R.S. 8180 13.2 12.0 110 13.9 13.2 105 Lily Lake 9133 11.5 10.0 115 12.8 12.2 105 Monte Cristo 8932 23.5 20.4 115 22.8 20.0 114 Salt River Summit 7640 11.7 10.7 109 11.1 12.6 88 Spring Creek Divide 9000 17.3 19.4 89 17.5 19.1 92 Trial Lake 9992 19.9 17.4 114 20.2 17.8 113 ----- ----- Basin Index (%) 112 112 ----------------------------------------------------------------------------- -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.