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: JANUARY 25 , 2023 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 9.8 10.6 92 11.0 13.3 83 Blind Bull Sum 8650 12.5 14.2 88 9.2 11.2 82 Cottonwood Creek 7670 13.1 11.9 110 14.1 14.4 98 East Rim Divide 7930 6.1 6.5 94 6.2 7.0 89 Grand Targhee 9260 25.4 25.2 101 15.6 20.0 78 Granite Creek 6770 9.1 9.5 96 8.4 12.0 70 Grassy Lake 7265 16.7 18.0 93 20.3 22.4 91 Gros Ventre Summit 8750 7.2 7.8 92 7.0 7.4 95 Gunsight Pass 9820 7.4 7.8 95 7.2 8.4 86 Lewis Lake Divide 7850 20.2 17.8 113 22.2 21.1 105 Loomis Park 8240 8.3 9.0 92 8.6 10.0 86 Phillips Bench 8200 15.5 15.4 101 16.3 16.4 99 Salt River Summit 7640 9.7 7.2 135 9.8 9.1 108 Snake River Station 6920 10.8 10.1 107 12.8 14.4 89 Somsen Ranch 6800 9.5 7.8 122 11.2 10.4 108 Spring Creek Divide 9000 13.5 13.6 99 14.6 13.8 106 Thumb Divide 7980 12.2 9.2 133 11.7 11.0 106 Togwotee Pass 9580 12.6 13.6 93 12.3 14.6 84 Triple Peak 8500 13.5 13.0 104 13.7 15.0 91 Two Ocean Plateau 9240 18.0 17.6 102 14.6 15.8 92 Willow Creek 8080 19.0 16.0 119 19.1 19.2 99 Younts Peak 8350 8.8 8.8 100 8.0 9.0 89 ----- ----- Basin Index (%) 103 93 MADISON HEADWATERS IN WYOMING Black Bear 8170 24.8 21.9 113 24.7 22.4 110 Canyon 7870 8.4 -M * 10.4 -M * Madison Plateau 7750 17.3 13.4 129 18.0 15.0 120 West Yellowstone 6700 9.6 6.6 145 12.4 8.8 141 Whiskey Creek 6800 12.2 8.8 139 15.3 11.8 130 ----- ----- Basin Index (%) 126 121 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 10.1 13.8 73 9.1 12.1 75 Canyon 7870 8.4 -M * 10.4 -M * Evening Star 9200 14.2 16.4 87 16.4 17.7 93 Fisher Creek 9100 20.0 20.2 99 20.9 19.6 107 Monument Peak 8850 11.8 12.6 94 14.0 13.6 103 Northeast Entrance 7350 5.5 6.1 90 7.8 8.1 96 Parker Peak 9400 13.0 13.0 100 13.5 12.4 109 Sylvan Lake 8420 10.7 11.8 91 13.3 14.2 94 Thumb Divide 7980 12.2 9.2 133 11.7 11.0 106 Two Ocean Plateau 9240 18.0 17.6 102 14.6 15.8 92 White Mill 8700 14.1 14.8 95 13.9 14.2 98 Wolverine 7650 6.3 7.4 85 7.0 8.0 88 ----- ----- Basin Index (%) 95 97 WIND RIVER Burroughs Creek 8750 5.8 -M * 6.7 -M * Castle Creek 8400 3.6 4.4 82 4.2 5.6 75 Cold Springs 9630 5.2 4.8 108 6.4 5.8 110 Deer Park 9700 14.2 7.6 187 14.3 9.7 147 Hobbs Park 10100 9.8 7.5 131 9.1 7.0 130 Kirwin 9550 5.5 6.6 83 7.1 7.4 96 Little Warm 9370 5.9 6.0 98 6.7 7.6 88 South Pass 9040 11.2 7.8 144 10.8 9.0 120 St. Lawrence Alt 8620 4.4 -M * 6.2 -M * Togwotee Pass 9580 12.6 13.6 93 12.3 14.6 84 Townsend Creek 8700 7.1 4.9 145 8.0 6.5 123 ----- ----- Basin Index (%) 119 108 BIGHORN BASIN Bald Mtn. 9380 9.0 10.8 83 7.6 9.6 79 Bear Trap Meadow 8200 4.8 3.8 126 5.5 5.0 110 Bone Springs Div 9350 6.1 9.4 65 6.0 8.6 70 Grave Springs 8550 6.0 4.5 133 6.4 5.4 119 Kirwin 9550 5.5 6.6 83 7.1 7.4 96 Marquette 8760 4.0 3.9 103 4.7 5.5 85 Middle Powder 7760 6.7 5.6 120 6.0 5.8 103 Owl Creek 8975 4.5 3.1 145 5.0 3.7 135 Powder River Pass 9480 5.2 6.4 81 6.6 7.8 85 Shell Creek 9580 6.1 8.7 70 6.9 8.2 84 Timber Creek 7950 3.0 2.8 107 3.4 4.5 76 ----- ----- Basin Index (%) 93 91 SHOSHONE RIVER Blackwater 9780 11.7 14.0 84 11.6 13.4 87 Evening Star 9200 14.2 16.4 87 16.4 17.7 93 Marquette 8760 4.0 3.9 103 4.7 5.5 85 Sylvan Lake 8420 10.7 11.8 91 13.3 14.2 94 Sylvan Road 7120 5.6 7.6 74 8.5 11.0 77 Younts Peak 8350 8.8 8.8 100 8.0 9.0 89 ----- ----- Basin Index (%) 88 88 POWDER RIVER Bear Trap Meadow 8200 4.8 3.8 126 5.5 5.0 110 Cloud Peak Reservoir 9860 7.2 8.2 88 7.3 7.8 94 Grave Springs 8550 6.0 4.5 133 6.4 5.4 119 Hansen Sawmill 8360 3.9 4.0 98 4.3 4.9 88 Middle Powder 7760 6.7 5.6 120 6.0 5.8 103 Powder River Pass 9480 5.2 6.4 81 6.6 7.8 85 Soldier Park 8720 2.2 3.6 61 3.7 5.5 67 ----- ----- Basin Index (%) 100 94 TONGUE RIVER Big Goose 7990 4.8 4.4 109 5.5 5.8 95 Bone Springs Div 9350 6.1 9.4 65 6.0 8.6 70 Burgess Junction 7880 6.3 6.3 100 7.8 7.2 108 Dome Lake 8880 4.3 6.2 69 6.1 7.2 85 Little Goose 8870 5.2 5.4 96 6.2 6.6 94 Sucker Creek 8880 6.6 7.0 94 8.6 7.9 109 Tie Creek 6870 3.7 3.2 116 6.6 6.4 103 ----- ----- Basin Index (%) 88 94 BELLE FOURCHE Blind Park 6890 4.2 4.3 98 5.6 6.2 90 Cole Canyon 5910 3.6 3.2 112 4.8 5.2 92 North Rapid Creek 6130 4.0 4.0 100 4.8 4.9 98 ----- ----- Basin Index (%) 103 93 CHEYENNE RIVER BASIN Blind Park 6890 4.2 4.3 98 5.6 6.2 90 North Rapid Creek 6130 4.0 4.0 100 4.8 4.9 98 ----- ----- Basin Index (%) 99 94 UPPER N. PLATTE Arapaho Ridge 10976 15.2 13.0 117 15.2 13.4 113 Blackhall Mtn 9839 20.2 16.6 122 20.5 17.9 115 Cinnabar Park 9707 -M 12.7 * 13.1 14.2 92 Columbine 9167 16.5 13.4 123 16.0 14.4 111 Divide Peak 8730 14.5 11.3 128 16.3 13.2 123 Joe Wright 10158 14.0 11.0 127 16.8 14.8 114 Laprele Creek 8390 6.0 5.1 118 6.3 6.6 95 Med Bow 10512 19.7 -M * 18.3 -M * Never Summer 10323 15.1 10.8 140 10.7 10.0 107 North French Creek 10153 15.6 16.0 98 15.7 15.6 101 Old Battle 9860 22.0 17.6 125 23.2 20.4 114 Rawah 9069 9.3 6.7 139 10.6 9.5 112 Sage Creek Basin 7850 12.6 8.5 148 12.6 7.9 159 Sand Lake 10098 14.4 15.5 93 14.5 14.4 101 South Brush Creek 8495 8.4 6.8 124 8.0 8.2 98 Tower 10620 30.9 23.9 129 28.9 24.2 119 Webber Springs 9260 15.6 12.4 126 17.1 15.3 112 Whiskey Park 9020 22.3 15.4 145 21.2 17.2 123 Willow Creek Pass 9523 10.3 7.4 139 10.7 7.6 141 Zirkel 9338 16.5 16.2 102 18.9 18.7 101 ----- ----- Basin Index (%) 123 112 SWEETWATER Deer Park 9700 14.2 7.6 187 14.3 9.7 147 Larsen Creek 9000 5.8 4.8 121 8.3 7.6 109 South Pass 9040 11.2 7.8 144 10.8 9.0 120 ----- ----- Basin Index (%) 154 127 LOWER N. PLATTE Casper Mtn. 7920 7.6 7.2 106 7.8 7.8 100 Laprele Creek 8390 6.0 5.1 118 6.3 6.6 95 Reno Hill 8430 8.2 7.6 108 9.5 8.2 116 Windy Peak 7915 5.0 4.1 122 6.1 6.0 102 ----- ----- Basin Index (%) 112 104 LARAMIE RIVER Brooklyn Lake 10250 13.0 12.0 108 13.7 12.4 110 Cinnabar Park 9707 -M 12.7 * 13.1 14.2 92 Crow Creek 8335 3.3 4.8 69 5.4 6.4 84 Deadman Hill 10239 10.5 10.0 105 9.8 10.1 97 Rawah 9069 9.3 6.7 139 10.6 9.5 112 Roach 9740 11.0 9.3 118 12.3 11.3 109 Windy Peak 7915 5.0 4.1 122 6.1 6.0 102 ----- ----- Basin Index (%) 111 102 S. PLATTE Crow Creek 8335 3.3 4.8 69 5.4 6.4 84 ----- ----- Basin Index (%) 69 84 LITTLE SNAKE RIVER Battle Mountain 7498 10.2 6.8 150 13.9 9.5 146 Divide Peak 8730 14.5 11.3 128 16.3 13.2 123 Elk River 8739 16.3 10.2 160 15.2 11.4 133 Elkhead Divide 8800 18.2 -M * 18.4 -M * Little Snake River 8928 21.2 14.8 143 25.0 20.6 121 Old Battle 9860 22.0 17.6 125 23.2 20.4 114 Sage Creek Basin 7850 12.6 8.5 148 12.6 7.9 159 Sandstone RS 8152 13.7 7.6 180 15.4 11.0 140 Whiskey Park 9020 22.3 15.4 145 21.2 17.2 123 ----- ----- Basin Index (%) 144 128 UPPER GREEN RIVER Big Sandy Opening 9080 8.6 7.6 113 8.5 7.8 109 Blind Bull Sum 8650 12.5 14.2 88 9.2 11.2 82 East Rim Divide 7930 6.1 6.5 94 6.2 7.0 89 Elkhart Park G.S. 9400 7.1 7.3 97 6.4 7.6 84 Gros Ventre Summit 8750 7.2 7.8 92 7.0 7.4 95 Gunsight Pass 9820 7.4 7.8 95 7.2 8.4 86 Indian Creek 9425 15.6 12.9 121 13.3 12.1 110 Kendall R.S. 7740 6.5 7.3 89 7.0 8.5 82 Larsen Creek 9000 5.8 4.8 121 8.3 7.6 109 Loomis Park 8240 8.3 9.0 92 8.6 10.0 86 New Fork Lake 8340 6.3 6.5 97 -M 6.7 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.3 7.6 96 8.5 8.2 104 Spring Creek Divide 9000 13.5 13.6 99 14.6 13.8 106 Triple Peak 8500 13.5 13.0 104 13.7 15.0 91 ----- ----- Basin Index (%) 100 95 LOWER GREEN RIVER Blacks Fork Jct 8869 8.2 4.8 171 8.4 7.4 114 Buck Pasture 9632 11.2 -M * 13.0 -M * EF Blacks Fork GS 9360 9.0 6.0 150 6.8 6.4 106 Hams Fork 7840 8.5 6.6 129 8.4 6.8 124 Henrys Fork 10182 -M -M * 8.7 -M * Hewinta 9500 7.2 5.2 138 9.3 8.2 113 Hickerson Park 9122 6.0 3.6 167 6.8 5.8 117 Hole-in-Rock 9168 5.4 3.9 138 6.5 6.1 107 Indian Creek 9425 15.6 12.9 121 13.3 12.1 110 Kelley R.S. 8180 11.3 8.3 136 12.0 10.4 115 Spirit Lk 10235 11.6 6.5 178 11.3 9.5 119 Steel Creek Park 10158 11.5 8.2 140 11.4 9.1 125 ----- ----- Basin Index (%) 143 115 UPPER BEAR RIVER Bear River RS 8777 7.5 5.4 139 9.2 7.0 131 Bug Lake 7987 14.9 9.4 159 12.5 10.7 117 Burts Miller Ranch 8000 5.8 3.4 171 9.3 4.9 190 Chalk Creek #1 9171 17.4 11.6 150 17.6 13.4 131 Giveout 6930 7.1 5.4 131 8.5 7.2 118 Hayden Fork 9130 11.3 7.8 145 15.0 11.8 127 Kelley R.S. 8180 11.3 8.3 136 12.0 10.4 115 Lily Lake 9133 9.9 7.0 141 10.2 9.2 111 Monte Cristo 8932 21.0 14.1 149 20.0 15.1 132 Salt River Summit 7640 9.7 7.2 135 9.8 9.1 108 Spring Creek Divide 9000 13.5 13.6 99 14.6 13.8 106 Trial Lake 9992 19.9 11.3 176 20.2 13.2 153 ----- ----- Basin Index (%) 143 126 ----------------------------------------------------------------------------- -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.