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 SATURDAY: JANUARY 21 , 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 10.4 95 11.0 12.8 86 Blind Bull Sum 8650 12.5 12.8 98 9.2 11.0 84 Cottonwood Creek 7670 12.9 11.6 111 14.0 13.8 101 East Rim Divide 7930 6.1 6.4 95 6.2 6.8 91 Grand Targhee 9260 25.1 24.1 104 15.6 19.2 81 Granite Creek 6770 9.1 9.2 99 8.3 11.8 70 Grassy Lake 7265 16.7 17.1 98 20.1 21.0 96 Gros Ventre Summit 8750 7.2 7.4 97 6.9 7.2 96 Gunsight Pass 9820 7.4 7.4 100 7.2 8.2 88 Lewis Lake Divide 7850 20.3 16.8 121 22.1 20.6 107 Loomis Park 8240 8.3 8.4 99 8.6 9.8 88 Phillips Bench 8200 15.2 14.1 108 16.2 15.6 104 Salt River Summit 7640 9.6 6.8 141 9.7 8.8 110 Snake River Station 6920 10.9 9.8 111 12.9 13.8 93 Somsen Ranch 6800 9.5 7.2 132 11.3 10.0 113 Spring Creek Divide 9000 13.5 13.2 102 14.5 13.4 108 Thumb Divide 7980 12.2 8.7 140 11.7 10.0 117 Togwotee Pass 9580 12.5 13.0 96 12.2 14.0 87 Triple Peak 8500 13.5 12.1 112 13.6 14.4 94 Two Ocean Plateau 9240 18.0 17.4 103 14.6 15.6 94 Willow Creek 8080 18.9 15.3 124 18.9 18.3 103 Younts Peak 8350 8.8 8.6 102 7.9 8.6 92 ----- ----- Basin Index (%) 108 96 MADISON HEADWATERS IN WYOMING Black Bear 8170 24.7 21.4 115 24.8 21.9 113 Canyon 7870 8.4 -M * 10.3 -M * Madison Plateau 7750 17.1 12.6 136 18.0 14.8 122 West Yellowstone 6700 9.5 6.2 153 12.3 8.3 148 Whiskey Creek 6800 12.2 8.2 149 16.0 11.4 140 ----- ----- Basin Index (%) 131 126 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 9.9 13.2 75 8.9 12.0 74 Canyon 7870 8.4 -M * 10.3 -M * Evening Star 9200 14.2 16.0 89 16.4 17.2 95 Fisher Creek 9100 19.7 19.6 101 20.6 18.8 110 Monument Peak 8850 11.5 12.4 93 13.8 13.5 102 Northeast Entrance 7350 5.3 5.7 93 7.6 7.7 99 Parker Peak 9400 13.0 12.4 105 13.4 12.2 110 Sylvan Lake 8420 10.6 11.3 94 13.6 13.8 99 Thumb Divide 7980 12.2 8.7 140 11.7 10.0 117 Two Ocean Plateau 9240 18.0 17.4 103 14.6 15.6 94 White Mill 8700 13.9 14.2 98 13.7 13.8 99 Wolverine 7650 6.2 7.0 89 6.9 7.8 88 ----- ----- Basin Index (%) 98 99 WIND RIVER Burroughs Creek 8750 5.7 -M * 6.7 -M * Castle Creek 8400 3.6 4.3 84 4.2 5.6 75 Cold Springs 9630 5.0 4.4 114 6.2 5.7 109 Deer Park 9700 14.2 7.5 189 14.2 9.1 156 Hobbs Park 10100 9.7 7.2 135 9.0 6.8 132 Kirwin 9550 5.3 6.6 80 7.0 7.2 97 Little Warm 9370 5.9 5.7 104 6.7 7.5 89 South Pass 9040 11.1 7.5 148 10.8 8.4 129 St. Lawrence Alt 8620 4.3 -M * 6.1 -M * Togwotee Pass 9580 12.5 13.0 96 12.2 14.0 87 Townsend Creek 8700 6.9 4.6 150 7.8 6.4 122 ----- ----- Basin Index (%) 122 110 BIGHORN BASIN Bald Mtn. 9380 8.6 10.4 83 7.2 9.3 77 Bear Trap Meadow 8200 4.7 3.6 131 5.4 4.8 112 Bone Springs Div 9350 5.8 9.2 63 5.8 8.6 67 Grave Springs 8550 5.9 4.2 140 6.3 5.2 121 Kirwin 9550 5.3 6.6 80 7.0 7.2 97 Marquette 8760 3.8 3.8 100 4.6 5.4 85 Middle Powder 7760 6.6 5.3 125 5.9 5.8 102 Owl Creek 8975 4.4 3.1 142 5.0 3.7 135 Powder River Pass 9480 5.1 6.2 82 6.5 7.6 86 Shell Creek 9580 6.0 8.6 70 6.8 8.2 83 Timber Creek 7950 2.9 2.6 112 3.3 4.4 75 ----- ----- Basin Index (%) 93 91 SHOSHONE RIVER Blackwater 9780 11.6 13.8 84 11.5 13.2 87 Evening Star 9200 14.2 16.0 89 16.4 17.2 95 Marquette 8760 3.8 3.8 100 4.6 5.4 85 Sylvan Lake 8420 10.6 11.3 94 13.6 13.8 99 Sylvan Road 7120 5.7 7.2 79 8.4 10.8 78 Younts Peak 8350 8.8 8.6 102 7.9 8.6 92 ----- ----- Basin Index (%) 90 90 POWDER RIVER Bear Trap Meadow 8200 4.7 3.6 131 5.4 4.8 112 Cloud Peak Reservoir 9860 7.0 7.8 90 7.1 7.6 93 Grave Springs 8550 5.9 4.2 140 6.3 5.2 121 Hansen Sawmill 8360 3.8 3.9 97 4.2 4.8 88 Middle Powder 7760 6.6 5.3 125 5.9 5.8 102 Powder River Pass 9480 5.1 6.2 82 6.5 7.6 86 Soldier Park 8720 2.1 3.4 62 3.6 5.2 69 ----- ----- Basin Index (%) 102 95 TONGUE RIVER Big Goose 7990 4.6 4.2 110 5.4 5.8 93 Bone Springs Div 9350 5.8 9.2 63 5.8 8.6 67 Burgess Junction 7880 6.0 5.9 102 7.4 6.9 107 Dome Lake 8880 4.2 6.2 68 6.0 7.0 86 Little Goose 8870 5.0 5.1 98 6.0 6.5 92 Sucker Creek 8880 6.3 6.7 94 8.2 7.6 108 Tie Creek 6870 3.5 3.2 109 6.3 6.1 103 ----- ----- Basin Index (%) 87 93 BELLE FOURCHE Blind Park 6890 4.0 4.0 100 5.4 6.0 90 Cole Canyon 5910 3.5 2.8 125 4.7 5.0 94 North Rapid Creek 6130 3.8 3.8 100 4.6 4.6 100 ----- ----- Basin Index (%) 107 94 CHEYENNE RIVER BASIN Blind Park 6890 4.0 4.0 100 5.4 6.0 90 North Rapid Creek 6130 3.8 3.8 100 4.6 4.6 100 ----- ----- Basin Index (%) 100 94 UPPER N. PLATTE Arapaho Ridge 10976 15.2 12.1 126 15.2 12.5 122 Blackhall Mtn 9839 19.8 15.8 125 20.2 17.0 119 Cinnabar Park 9707 -M 11.6 * 12.9 14.0 92 Columbine 9167 16.3 12.8 127 16.0 13.8 116 Divide Peak 8730 14.3 10.6 135 16.2 12.4 131 Joe Wright 10158 13.7 10.4 132 16.5 14.4 115 Laprele Creek 8390 5.8 4.8 121 6.1 6.5 94 Med Bow 10512 19.4 -M * 18.2 -M * Never Summer 10323 15.0 10.6 142 10.5 9.8 107 North French Creek 10153 15.4 15.4 100 15.5 15.3 101 Old Battle 9860 21.9 16.5 133 23.2 19.6 118 Rawah 9069 9.2 6.2 148 10.5 9.3 113 Sage Creek Basin 7850 12.4 7.8 159 12.5 7.7 162 Sand Lake 10098 14.1 14.8 95 14.3 13.0 110 South Brush Creek 8495 8.2 6.3 130 7.8 8.0 98 Tower 10620 30.6 22.6 135 28.9 22.9 126 Webber Springs 9260 15.6 12.0 130 17.0 15.0 113 Whiskey Park 9020 22.0 14.7 150 20.9 17.0 123 Willow Creek Pass 9523 10.2 6.8 150 10.6 7.2 147 Zirkel 9338 16.4 15.4 106 -M 17.0 * ----- ----- Basin Index (%) 128 117 SWEETWATER Deer Park 9700 14.2 7.5 189 14.2 9.1 156 Larsen Creek 9000 5.9 4.7 126 8.3 7.5 111 South Pass 9040 11.1 7.5 148 10.8 8.4 129 ----- ----- Basin Index (%) 158 133 LOWER N. PLATTE Casper Mtn. 7920 7.2 6.6 109 7.5 7.6 99 Laprele Creek 8390 5.8 4.8 121 6.1 6.5 94 Reno Hill 8430 7.7 7.0 110 9.2 8.0 115 Windy Peak 7915 4.9 3.9 126 5.9 5.8 102 ----- ----- Basin Index (%) 115 103 LARAMIE RIVER Brooklyn Lake 10250 12.8 11.6 110 13.6 12.2 111 Cinnabar Park 9707 -M 11.6 * 12.9 14.0 92 Crow Creek 8335 3.2 4.6 70 5.3 6.1 87 Deadman Hill 10239 10.4 9.8 106 9.6 9.7 99 Rawah 9069 9.2 6.2 148 10.5 9.3 113 Roach 9740 10.9 9.0 121 12.3 10.8 114 Windy Peak 7915 4.9 3.9 126 5.9 5.8 102 ----- ----- Basin Index (%) 114 103 S. PLATTE Crow Creek 8335 3.2 4.6 70 5.3 6.1 87 ----- ----- Basin Index (%) 70 87 LITTLE SNAKE RIVER Battle Mountain 7498 10.1 6.4 158 13.7 9.0 152 Divide Peak 8730 14.3 10.6 135 16.2 12.4 131 Elk River 8739 16.2 9.8 165 15.2 11.0 138 Elkhead Divide 8800 18.0 -M * 18.4 -M * Little Snake River 8928 21.0 14.0 150 25.0 19.3 130 Old Battle 9860 21.9 16.5 133 23.2 19.6 118 Sage Creek Basin 7850 12.4 7.8 159 12.5 7.7 162 Sandstone RS 8152 13.7 7.4 185 15.2 10.6 143 Whiskey Park 9020 22.0 14.7 150 20.9 17.0 123 ----- ----- Basin Index (%) 151 133 UPPER GREEN RIVER Big Sandy Opening 9080 8.7 7.2 121 8.5 7.2 118 Blind Bull Sum 8650 12.5 12.8 98 9.2 11.0 84 East Rim Divide 7930 6.1 6.4 95 6.2 6.8 91 Elkhart Park G.S. 9400 7.1 7.0 101 6.5 7.6 86 Gros Ventre Summit 8750 7.2 7.4 97 6.9 7.2 96 Gunsight Pass 9820 7.4 7.4 100 7.2 8.2 88 Indian Creek 9425 15.6 12.3 127 13.2 11.4 116 Kendall R.S. 7740 6.5 6.8 96 7.0 8.2 85 Larsen Creek 9000 5.9 4.7 126 8.3 7.5 111 Loomis Park 8240 8.3 8.4 99 8.6 9.8 88 New Fork Lake 8340 6.3 6.3 100 -M 6.6 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.2 7.4 97 8.5 8.0 106 Spring Creek Divide 9000 13.5 13.2 102 14.5 13.4 108 Triple Peak 8500 13.5 12.1 112 13.6 14.4 94 ----- ----- Basin Index (%) 105 98 LOWER GREEN RIVER Blacks Fork Jct 8869 8.0 4.6 174 8.3 6.8 122 Buck Pasture 9632 11.0 -M * 12.8 -M * EF Blacks Fork GS 9360 9.0 5.2 173 6.8 6.0 113 Hams Fork 7840 8.5 6.2 137 8.4 6.2 135 Henrys Fork 10182 -M -M * 8.7 -M * Hewinta 9500 6.9 5.1 135 8.9 7.7 116 Hickerson Park 9122 5.7 3.6 158 6.5 5.7 114 Hole-in-Rock 9168 5.3 3.7 143 6.3 5.8 109 Indian Creek 9425 15.6 12.3 127 13.2 11.4 116 Kelley R.S. 8180 11.4 7.4 154 11.9 9.7 123 Spirit Lk 10235 10.9 6.2 176 10.8 8.7 124 Steel Creek Park 10158 11.3 7.8 145 11.1 8.9 125 ----- ----- Basin Index (%) 149 120 UPPER BEAR RIVER Bear River RS 8777 7.3 5.0 146 8.9 6.7 133 Bug Lake 7987 14.6 8.6 170 12.3 9.8 126 Burts Miller Ranch 8000 5.6 3.2 175 9.0 4.8 188 Chalk Creek #1 9171 17.0 11.0 155 17.4 12.8 136 Giveout 6930 7.2 5.1 141 8.5 7.0 121 Hayden Fork 9130 11.2 7.4 151 15.1 11.2 135 Kelley R.S. 8180 11.4 7.4 154 11.9 9.7 123 Lily Lake 9133 9.8 6.6 148 9.9 8.8 112 Monte Cristo 8932 20.8 13.3 156 19.9 14.0 142 Salt River Summit 7640 9.6 6.8 141 9.7 8.8 110 Spring Creek Divide 9000 13.5 13.2 102 14.5 13.4 108 Trial Lake 9992 19.8 11.0 180 19.9 12.6 158 ----- ----- Basin Index (%) 150 131 ----------------------------------------------------------------------------- -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.