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 THURSDAY: FEBRUARY 22 , 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 14.2 78 14.7 16.0 92 Blind Bull Sum 8650 16.4 17.9 92 11.5 14.1 82 Cottonwood Creek 7670 16.9 16.4 103 19.9 18.7 106 East Rim Divide 7930 6.8 8.1 84 8.0 8.4 95 Grand Targhee 9260 28.7 32.1 89 22.4 25.2 89 Granite Creek 6770 10.2 13.5 76 11.5 15.2 76 Grassy Lake 7265 19.4 24.8 78 25.3 27.1 93 Gros Ventre Summit 8750 7.7 9.2 84 9.1 8.8 103 Gunsight Pass 9820 9.1 9.6 95 11.2 10.4 108 Lewis Lake Divide 7850 20.8 22.7 92 25.0 25.6 98 Loomis Park 8240 9.5 11.7 81 10.7 12.7 84 Phillips Bench 8200 16.8 19.6 86 19.8 20.5 97 Salt River Summit 7640 11.4 10.2 112 11.0 11.8 93 Snake River Station 6920 11.7 13.8 85 17.2 16.8 102 Somsen Ranch 6800 12.1 10.2 119 16.3 12.7 128 Spring Creek Divide 9000 16.9 18.3 92 17.0 18.2 93 Thumb Divide 7980 10.4 11.6 90 11.8 12.9 91 Togwotee Pass 9580 13.5 17.4 78 13.2 18.4 72 Triple Peak 8500 15.8 17.0 93 17.5 19.3 91 Two Ocean Plateau 9240 17.6 21.8 81 18.0 19.5 92 Willow Creek 8080 22.9 21.5 107 24.9 24.4 102 Younts Peak 8350 8.6 11.0 78 10.5 11.1 95 ----- ----- Basin Index (%) 89 94 MADISON HEADWATERS IN WYOMING Black Bear 8170 22.1 28.3 78 26.8 27.0 99 Canyon 7870 7.0 -M * 9.5 -M * Madison Plateau 7750 13.0 16.3 80 16.4 18.0 91 West Yellowstone 6700 5.4 8.6 63 9.7 10.8 90 Whiskey Creek 6800 8.9 11.6 77 14.4 14.2 101 ----- ----- Basin Index (%) 76 96 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 10.1 16.8 60 9.9 15.7 63 Canyon 7870 7.0 -M * 9.5 -M * Evening Star 9200 14.1 20.6 68 19.9 22.8 87 Fisher Creek 9100 13.3 25.3 53 16.3 24.5 67 Monument Peak 8850 -M 15.5 * 12.4 16.6 75 Northeast Entrance 7350 3.4 7.8 44 6.9 10.2 68 Parker Peak 9400 13.4 16.0 84 15.4 15.2 101 Sylvan Lake 8420 11.0 14.6 75 16.6 17.8 93 Thumb Divide 7980 10.4 11.6 90 11.8 12.9 91 Two Ocean Plateau 9240 17.6 21.8 81 18.0 19.5 92 White Mill 8700 10.9 18.0 61 11.9 17.5 68 Wolverine 7650 7.4 9.2 80 10.4 9.6 108 ----- ----- Basin Index (%) 69 82 WIND RIVER Burroughs Creek 8750 8.4 -M * 8.7 -M * Castle Creek 8400 5.2 5.4 96 6.3 6.6 95 Cold Springs 9630 6.0 5.6 107 8.5 6.7 127 Deer Park 9700 12.4 9.7 128 14.4 12.2 118 Hobbs Park 10100 11.1 9.4 118 12.1 8.2 148 Kirwin 9550 8.8 7.8 113 11.1 8.6 129 Little Warm 9370 6.8 7.6 89 9.3 8.8 106 South Pass 9040 10.5 10.2 103 12.3 10.4 118 St. Lawrence Alt 8620 4.1 -M * 7.2 -M * Togwotee Pass 9580 13.5 17.4 78 13.2 18.4 72 Townsend Creek 8700 6.5 6.2 105 9.8 7.7 127 ----- ----- Basin Index (%) 102 111 BIGHORN BASIN Bald Mtn. 9380 9.0 14.0 64 8.8 11.5 77 Bear Trap Meadow 8200 2.8 4.6 61 5.6 5.9 95 Bone Springs Div 9350 7.8 11.7 67 8.4 11.2 75 Grave Springs 8550 2.9 5.9 49 5.2 6.6 79 Kirwin 9550 8.8 7.8 113 11.1 8.6 129 Marquette 8760 8.9 4.9 182 11.6 6.5 178 Middle Powder 7760 3.8 7.2 53 5.8 6.7 87 Owl Creek 8975 -M 4.0 * -M 4.4 * Powder River Pass 9480 4.6 8.2 56 7.8 9.4 83 Shell Creek 9580 8.6 10.8 80 9.4 10.0 94 Timber Creek 7950 6.0 3.2 188 9.9 5.3 187 ----- ----- Basin Index (%) 81 102 SHOSHONE RIVER Blackwater 9780 15.5 16.7 93 16.1 16.2 99 Evening Star 9200 14.1 20.6 68 19.9 22.8 87 Marquette 8760 8.9 4.9 182 11.6 6.5 178 Sylvan Lake 8420 11.0 14.6 75 16.6 17.8 93 Sylvan Road 7120 5.6 9.0 62 12.0 13.4 90 Younts Peak 8350 8.6 11.0 78 10.5 11.1 95 ----- ----- Basin Index (%) 83 99 POWDER RIVER Bear Trap Meadow 8200 2.8 4.6 61 5.6 5.9 95 Cloud Peak Reservoir 9860 8.1 10.4 78 9.9 9.6 103 Grave Springs 8550 2.9 5.9 49 5.2 6.6 79 Hansen Sawmill 8360 2.8 4.8 58 5.8 5.8 100 Middle Powder 7760 3.8 7.2 53 5.8 6.7 87 Powder River Pass 9480 4.6 8.2 56 7.8 9.4 83 Soldier Park 8720 2.3 4.9 47 7.2 6.8 106 ----- ----- Basin Index (%) 59 93 TONGUE RIVER Big Goose 7990 3.4 5.8 59 7.4 7.4 100 Bone Springs Div 9350 7.8 11.7 67 8.4 11.2 75 Burgess Junction 7880 4.5 7.8 58 8.1 8.6 94 Dome Lake 8880 -M 7.9 * 7.1 8.8 81 Little Goose 8870 5.0 7.2 69 8.4 9.0 93 Sucker Creek 8880 6.3 8.7 72 9.8 9.9 99 Tie Creek 6870 1.0 4.2 24 9.0 7.9 114 ----- ----- Basin Index (%) 62 93 BELLE FOURCHE Blind Park 6890 2.8 5.9 47 4.9 8.0 61 Cole Canyon 5910 2.4 4.4 55 4.2 6.5 65 North Rapid Creek 6130 4.6 5.7 81 6.0 6.6 91 ----- ----- Basin Index (%) 61 72 CHEYENNE RIVER BASIN Blind Park 6890 2.8 5.9 47 4.9 8.0 61 North Rapid Creek 6130 4.6 5.7 81 6.0 6.6 91 ----- ----- Basin Index (%) 64 75 UPPER N. PLATTE Arapaho Ridge 10976 15.7 16.7 94 15.7 16.8 93 Blackhall Mtn 9839 24.7 21.5 115 25.7 21.6 119 Cinnabar Park 9707 12.2 16.2 75 14.6 17.9 82 Columbine 9167 19.7 17.5 113 19.5 18.1 108 Divide Peak 8730 14.8 14.4 103 18.2 16.2 112 Joe Wright 10158 11.9 14.7 81 16.0 19.0 84 Laprele Creek 8390 5.5 6.6 83 8.2 8.0 102 Med Bow 10512 26.1 -M * 24.3 -M * Never Summer 10323 12.6 14.8 85 9.5 12.4 77 North French Creek 10153 18.5 20.0 92 19.0 19.0 100 Old Battle 9860 23.5 23.2 101 24.2 25.1 96 Rawah 9069 7.8 8.5 92 11.0 12.0 92 Sage Creek Basin 7850 10.0 11.3 88 11.5 10.1 114 Sand Lake 10098 18.8 20.0 94 18.5 17.2 108 South Brush Creek 8495 6.8 8.9 76 8.2 10.0 82 Tower 10620 31.6 32.1 98 29.8 29.7 100 Webber Springs 9260 17.4 16.2 107 18.6 19.0 98 Whiskey Park 9020 23.8 20.3 117 23.5 21.3 110 Willow Creek Pass 9523 9.4 10.1 93 10.6 10.2 104 Zirkel 9338 19.7 22.0 90 21.6 23.8 91 ----- ----- Basin Index (%) 97 99 SWEETWATER Deer Park 9700 12.4 9.7 128 14.4 12.2 118 Larsen Creek 9000 6.4 8.2 78 10.3 9.8 105 South Pass 9040 10.5 10.2 103 12.3 10.4 118 ----- ----- Basin Index (%) 104 114 LOWER N. PLATTE Casper Mtn. 7920 6.1 9.1 67 10.6 9.4 113 Laprele Creek 8390 5.5 6.6 83 8.2 8.0 102 Reno Hill 8430 6.8 9.4 72 10.7 10.2 105 Windy Peak 7915 5.6 5.6 100 6.9 7.2 96 ----- ----- Basin Index (%) 78 105 LARAMIE RIVER Brooklyn Lake 10250 16.6 15.5 107 17.2 15.8 109 Cinnabar Park 9707 12.2 16.2 75 14.6 17.9 82 Crow Creek 8335 2.4 5.7 42 6.0 7.7 78 Deadman Hill 10239 11.7 12.6 93 11.1 12.5 89 Rawah 9069 7.8 8.5 92 11.0 12.0 92 Roach 9740 8.9 11.7 76 11.0 14.0 79 Windy Peak 7915 5.6 5.6 100 6.9 7.2 96 ----- ----- Basin Index (%) 86 89 S. PLATTE Crow Creek 8335 2.4 5.7 42 6.0 7.7 78 ----- ----- Basin Index (%) 42 78 LITTLE SNAKE RIVER Battle Mountain 7498 9.6 8.9 108 14.2 11.6 122 Divide Peak 8730 14.8 14.4 103 18.2 16.2 112 Elk River 8739 14.1 14.2 99 14.8 14.6 101 Elkhead Divide 8800 17.7 -M * 18.8 -M * Little Snake River 8928 23.1 21.2 109 26.3 26.6 99 Old Battle 9860 23.5 23.2 101 24.2 25.1 96 Sage Creek Basin 7850 10.0 11.3 88 11.5 10.1 114 Sandstone RS 8152 14.5 10.0 145 14.0 13.7 102 Whiskey Park 9020 23.8 20.3 117 23.5 21.3 110 ----- ----- Basin Index (%) 108 105 UPPER GREEN RIVER Big Sandy Opening 9080 9.2 9.4 98 10.0 9.2 109 Blind Bull Sum 8650 16.4 17.9 92 11.5 14.1 82 East Rim Divide 7930 6.8 8.1 84 8.0 8.4 95 Elkhart Park G.S. 9400 7.4 9.0 82 8.7 9.4 93 Gros Ventre Summit 8750 7.7 9.2 84 9.1 8.8 103 Gunsight Pass 9820 9.1 9.6 95 11.2 10.4 108 Indian Creek 9425 16.9 16.8 101 15.1 14.8 102 Kendall R.S. 7740 6.9 9.5 73 9.7 10.4 93 Larsen Creek 9000 6.4 8.2 78 10.3 9.8 105 Loomis Park 8240 9.5 11.7 81 10.7 12.7 84 New Fork Lake 8340 6.5 8.0 81 -M 8.0 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.4 9.8 76 9.4 10.4 90 Spring Creek Divide 9000 16.9 18.3 92 17.0 18.2 93 Triple Peak 8500 15.8 17.0 93 17.5 19.3 91 ----- ----- Basin Index (%) 88 95 LOWER GREEN RIVER Blacks Fork Jct 8869 8.9 6.2 144 11.0 9.4 117 Buck Pasture 9632 11.3 -M * 12.2 -M * EF Blacks Fork GS 9360 6.7 8.0 84 8.1 8.0 101 Hams Fork 7840 -M 8.5 * 8.6 8.3 104 Henrys Fork 10182 -M -M * 9.7 -M * Hewinta 9500 8.7 7.1 123 11.7 10.0 117 Hickerson Park 9122 6.8 5.5 124 9.2 7.4 124 Hole-in-Rock 9168 6.2 5.4 115 7.5 7.2 104 Indian Creek 9425 16.9 16.8 101 15.1 14.8 102 Kelley R.S. 8180 12.6 10.9 116 13.4 12.6 106 Spirit Lk 10235 9.8 8.5 115 13.5 12.3 110 Steel Creek Park 10158 11.3 10.6 107 13.5 11.8 114 ----- ----- Basin Index (%) 111 110 UPPER BEAR RIVER Bear River RS 8777 8.6 7.0 123 10.8 8.8 123 Bug Lake 7987 18.7 14.3 131 18.6 13.8 135 Burts Miller Ranch 8000 6.7 5.0 134 10.0 5.6 179 Chalk Creek #1 9171 16.9 16.2 104 18.7 17.0 110 Giveout 6930 8.2 7.6 108 9.8 9.2 107 Hayden Fork 9130 13.4 11.3 119 17.4 15.0 116 Kelley R.S. 8180 12.6 10.9 116 13.4 12.6 106 Lily Lake 9133 10.7 9.6 111 12.1 11.5 105 Monte Cristo 8932 22.8 19.6 116 21.3 19.1 112 Salt River Summit 7640 11.4 10.2 112 11.0 11.8 93 Spring Creek Divide 9000 16.9 18.3 92 17.0 18.2 93 Trial Lake 9992 18.7 16.6 113 19.2 16.8 114 ----- ----- Basin Index (%) 113 112 ----------------------------------------------------------------------------- -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.