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 FRIDAY: JANUARY 27 , 2023 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 9.9 10.6 93 11.1 13.4 83 Blind Bull Sum 8650 12.8 14.2 90 9.3 11.4 82 Cottonwood Creek 7670 13.3 12.0 111 14.3 14.6 98 East Rim Divide 7930 6.6 6.6 100 6.4 7.0 91 Grand Targhee 9260 26.1 25.5 102 16.2 20.0 81 Granite Creek 6770 9.1 9.9 92 8.5 12.2 70 Grassy Lake 7265 17.1 18.6 92 20.7 22.6 92 Gros Ventre Summit 8750 7.4 7.8 95 7.1 7.6 93 Gunsight Pass 9820 7.6 7.9 96 7.5 8.4 89 Lewis Lake Divide 7850 20.5 18.2 113 22.4 21.4 105 Loomis Park 8240 8.5 9.2 92 8.7 10.1 86 Phillips Bench 8200 16.0 15.8 101 16.7 16.6 101 Salt River Summit 7640 10.1 7.4 136 10.0 9.2 109 Snake River Station 6920 10.9 10.4 105 13.0 14.6 89 Somsen Ranch 6800 9.6 7.8 123 11.4 10.4 110 Spring Creek Divide 9000 13.7 14.0 98 14.8 14.3 103 Thumb Divide 7980 12.4 9.3 133 11.9 11.2 106 Togwotee Pass 9580 12.8 14.0 91 12.4 14.6 85 Triple Peak 8500 13.7 13.2 104 14.0 15.2 92 Two Ocean Plateau 9240 18.1 17.8 102 14.8 15.9 93 Willow Creek 8080 19.5 16.2 120 19.4 19.3 101 Younts Peak 8350 9.1 8.8 103 8.3 9.2 90 ----- ----- Basin Index (%) 103 93 MADISON HEADWATERS IN WYOMING Black Bear 8170 25.3 22.3 113 25.3 22.6 112 Canyon 7870 8.7 -M * 10.7 -M * Madison Plateau 7750 17.7 13.6 130 18.3 15.2 120 West Yellowstone 6700 9.9 6.7 148 12.6 8.9 142 Whiskey Creek 6800 12.5 9.0 139 16.3 12.0 136 ----- ----- Basin Index (%) 127 124 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 10.5 13.8 76 9.3 12.3 76 Canyon 7870 8.7 -M * 10.7 -M * Evening Star 9200 14.4 16.8 86 16.8 17.8 94 Fisher Creek 9100 20.5 20.4 100 21.5 19.9 108 Monument Peak 8850 12.2 13.0 94 14.4 13.9 104 Northeast Entrance 7350 5.7 6.2 92 8.0 8.1 99 Parker Peak 9400 13.6 13.2 103 13.9 12.5 111 Sylvan Lake 8420 11.0 12.0 92 13.7 14.2 96 Thumb Divide 7980 12.4 9.3 133 11.9 11.2 106 Two Ocean Plateau 9240 18.1 17.8 102 14.8 15.9 93 White Mill 8700 14.4 14.8 97 14.2 14.6 97 Wolverine 7650 6.6 7.6 87 7.2 8.2 88 ----- ----- Basin Index (%) 96 98 WIND RIVER Burroughs Creek 8750 6.1 -M * 6.7 -M * Castle Creek 8400 3.8 4.4 86 4.4 5.8 76 Cold Springs 9630 5.2 4.7 111 6.4 5.8 110 Deer Park 9700 14.2 7.6 187 14.4 9.7 148 Hobbs Park 10100 10.0 7.5 133 9.3 7.0 133 Kirwin 9550 5.6 6.6 85 7.2 7.4 97 Little Warm 9370 6.0 6.0 100 6.9 7.6 91 South Pass 9040 11.2 7.8 144 11.0 9.2 120 St. Lawrence Alt 8620 4.6 -M * 6.4 -M * Togwotee Pass 9580 12.8 14.0 91 12.4 14.6 85 Townsend Creek 8700 7.1 5.0 142 8.0 6.5 123 ----- ----- Basin Index (%) 119 109 BIGHORN BASIN Bald Mtn. 9380 10.5 10.8 97 8.6 9.6 90 Bear Trap Meadow 8200 5.2 3.8 137 5.9 5.2 113 Bone Springs Div 9350 7.2 9.6 75 6.7 8.7 77 Grave Springs 8550 6.4 4.6 139 6.8 5.5 124 Kirwin 9550 5.6 6.6 85 7.2 7.4 97 Marquette 8760 4.0 3.9 103 4.8 5.6 86 Middle Powder 7760 7.2 5.6 129 6.3 5.9 107 Owl Creek 8975 4.5 3.2 141 5.1 3.8 134 Powder River Pass 9480 5.9 6.6 89 7.5 7.8 96 Shell Creek 9580 7.0 8.8 80 7.6 8.4 90 Timber Creek 7950 3.0 2.8 107 3.5 4.6 76 ----- ----- Basin Index (%) 100 97 SHOSHONE RIVER Blackwater 9780 12.0 14.0 86 11.9 13.6 88 Evening Star 9200 14.4 16.8 86 16.8 17.8 94 Marquette 8760 4.0 3.9 103 4.8 5.6 86 Sylvan Lake 8420 11.0 12.0 92 13.7 14.2 96 Sylvan Road 7120 5.7 7.7 74 8.6 11.2 77 Younts Peak 8350 9.1 8.8 103 8.3 9.2 90 ----- ----- Basin Index (%) 89 90 POWDER RIVER Bear Trap Meadow 8200 5.2 3.8 137 5.9 5.2 113 Cloud Peak Reservoir 9860 8.1 8.2 99 8.2 7.9 104 Grave Springs 8550 6.4 4.6 139 6.8 5.5 124 Hansen Sawmill 8360 4.2 4.0 105 4.5 4.9 92 Middle Powder 7760 7.2 5.6 129 6.3 5.9 107 Powder River Pass 9480 5.9 6.6 89 7.5 7.8 96 Soldier Park 8720 2.8 3.6 78 4.2 5.5 76 ----- ----- Basin Index (%) 109 102 TONGUE RIVER Big Goose 7990 5.6 4.5 124 6.1 5.8 105 Bone Springs Div 9350 7.2 9.6 75 6.7 8.7 77 Burgess Junction 7880 7.5 6.3 119 8.9 7.4 120 Dome Lake 8880 5.0 6.4 78 6.8 7.2 94 Little Goose 8870 6.0 5.4 111 7.0 6.8 103 Sucker Creek 8880 8.0 7.2 111 10.2 8.2 124 Tie Creek 6870 -M 3.2 * 7.9 6.4 123 ----- ----- Basin Index (%) 100 106 BELLE FOURCHE Blind Park 6890 5.0 4.4 114 6.5 6.3 103 Cole Canyon 5910 4.3 3.3 130 5.5 5.2 106 North Rapid Creek 6130 4.5 4.3 105 5.2 5.0 104 ----- ----- Basin Index (%) 115 104 CHEYENNE RIVER BASIN Blind Park 6890 5.0 4.4 114 6.5 6.3 103 North Rapid Creek 6130 4.5 4.3 105 5.2 5.0 104 ----- ----- Basin Index (%) 109 104 UPPER N. PLATTE Arapaho Ridge 10976 15.4 13.4 115 15.4 13.4 115 Blackhall Mtn 9839 21.0 17.1 123 21.3 18.1 118 Cinnabar Park 9707 -M 12.8 * 13.4 14.8 91 Columbine 9167 16.8 13.4 125 16.3 14.7 111 Divide Peak 8730 15.0 11.5 130 16.8 13.4 125 Joe Wright 10158 14.8 11.3 131 17.2 15.0 115 Laprele Creek 8390 6.6 5.2 127 7.0 6.6 106 Med Bow 10512 20.8 -M * 18.9 -M * Never Summer 10323 15.6 11.0 142 11.1 10.1 110 North French Creek 10153 16.8 16.2 104 16.7 15.7 106 Old Battle 9860 22.6 18.2 124 23.5 20.4 115 Rawah 9069 9.7 6.8 143 11.0 9.6 115 Sage Creek Basin 7850 13.0 8.6 151 12.9 8.5 152 Sand Lake 10098 15.2 15.6 97 15.3 14.8 103 South Brush Creek 8495 9.7 7.0 139 9.0 8.2 110 Tower 10620 31.7 25.0 127 29.2 24.6 119 Webber Springs 9260 15.8 12.6 125 17.5 15.4 114 Whiskey Park 9020 23.0 15.6 147 21.7 17.6 123 Willow Creek Pass 9523 10.6 7.5 141 11.0 8.2 134 Zirkel 9338 17.0 16.5 103 19.2 18.8 102 ----- ----- Basin Index (%) 125 114 SWEETWATER Deer Park 9700 14.2 7.6 187 14.4 9.7 148 Larsen Creek 9000 6.0 4.8 125 8.4 7.7 109 South Pass 9040 11.2 7.8 144 11.0 9.2 120 ----- ----- Basin Index (%) 155 127 LOWER N. PLATTE Casper Mtn. 7920 7.8 7.2 108 8.0 8.0 100 Laprele Creek 8390 6.6 5.2 127 7.0 6.6 106 Reno Hill 8430 8.6 7.8 110 10.0 8.2 122 Windy Peak 7915 5.5 4.2 131 6.5 6.0 108 ----- ----- Basin Index (%) 117 109 LARAMIE RIVER Brooklyn Lake 10250 13.4 12.1 111 14.3 12.8 112 Cinnabar Park 9707 -M 12.8 * 13.4 14.8 91 Crow Creek 8335 3.7 4.9 76 5.6 6.5 86 Deadman Hill 10239 10.8 10.4 104 10.0 10.3 97 Rawah 9069 9.7 6.8 143 11.0 9.6 115 Roach 9740 11.2 9.4 119 12.4 11.4 109 Windy Peak 7915 5.5 4.2 131 6.5 6.0 108 ----- ----- Basin Index (%) 114 103 S. PLATTE Crow Creek 8335 3.7 4.9 76 5.6 6.5 86 ----- ----- Basin Index (%) 76 86 LITTLE SNAKE RIVER Battle Mountain 7498 10.8 6.8 159 14.4 9.6 150 Divide Peak 8730 15.0 11.5 130 16.8 13.4 125 Elk River 8739 16.7 10.4 161 15.1 11.6 130 Elkhead Divide 8800 18.7 -M * 18.4 -M * Little Snake River 8928 21.9 15.0 146 24.9 21.1 118 Old Battle 9860 22.6 18.2 124 23.5 20.4 115 Sage Creek Basin 7850 13.0 8.6 151 12.9 8.5 152 Sandstone RS 8152 14.2 7.8 182 15.9 11.2 142 Whiskey Park 9020 23.0 15.6 147 21.7 17.6 123 ----- ----- Basin Index (%) 146 128 UPPER GREEN RIVER Big Sandy Opening 9080 8.8 7.8 113 8.6 7.8 110 Blind Bull Sum 8650 12.8 14.2 90 9.3 11.4 82 East Rim Divide 7930 6.6 6.6 100 6.4 7.0 91 Elkhart Park G.S. 9400 7.3 7.4 99 6.5 7.6 86 Gros Ventre Summit 8750 7.4 7.8 95 7.1 7.6 93 Gunsight Pass 9820 7.6 7.9 96 7.5 8.4 89 Indian Creek 9425 15.9 13.3 120 13.5 12.4 109 Kendall R.S. 7740 6.7 7.3 92 7.0 8.5 82 Larsen Creek 9000 6.0 4.8 125 8.4 7.7 109 Loomis Park 8240 8.5 9.2 92 8.7 10.1 86 New Fork Lake 8340 6.4 6.6 97 -M 6.7 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.4 7.8 95 8.7 8.5 102 Spring Creek Divide 9000 13.7 14.0 98 14.8 14.3 103 Triple Peak 8500 13.7 13.2 104 14.0 15.2 92 ----- ----- Basin Index (%) 101 95 LOWER GREEN RIVER Blacks Fork Jct 8869 8.4 5.0 168 8.5 7.4 115 Buck Pasture 9632 11.4 -M * 13.1 -M * EF Blacks Fork GS 9360 9.2 6.0 153 7.0 6.5 108 Hams Fork 7840 8.7 6.9 126 8.5 7.0 121 Henrys Fork 10182 -M -M * 8.8 -M * Hewinta 9500 7.3 5.2 140 9.4 8.2 115 Hickerson Park 9122 6.1 3.8 161 6.9 6.0 115 Hole-in-Rock 9168 5.6 3.9 144 6.7 6.1 110 Indian Creek 9425 15.9 13.3 120 13.5 12.4 109 Kelley R.S. 8180 11.5 8.4 137 12.2 10.5 116 Spirit Lk 10235 12.0 6.5 185 11.7 9.6 122 Steel Creek Park 10158 11.7 8.4 139 11.6 9.2 126 ----- ----- Basin Index (%) 143 116 UPPER BEAR RIVER Bear River RS 8777 7.6 5.5 138 9.4 7.2 131 Bug Lake 7987 15.0 9.6 156 12.6 10.8 117 Burts Miller Ranch 8000 6.0 3.4 176 9.4 5.0 188 Chalk Creek #1 9171 17.6 11.7 150 17.8 13.7 130 Giveout 6930 7.4 5.5 135 8.7 7.4 118 Hayden Fork 9130 11.4 8.0 142 15.2 11.9 128 Kelley R.S. 8180 11.5 8.4 137 12.2 10.5 116 Lily Lake 9133 10.2 7.0 146 10.4 9.4 111 Monte Cristo 8932 21.2 14.2 149 20.1 15.4 131 Salt River Summit 7640 10.1 7.4 136 10.0 9.2 109 Spring Creek Divide 9000 13.7 14.0 98 14.8 14.3 103 Trial Lake 9992 20.2 11.6 174 20.4 13.4 152 ----- ----- 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.