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: JANUARY 12 , 2023 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 9.6 9.6 100 10.5 11.8 89 Blind Bull Sum 8650 12.1 12.0 101 8.7 10.2 85 Cottonwood Creek 7670 12.5 9.6 130 13.4 12.4 108 East Rim Divide 7930 6.0 5.2 115 6.1 6.3 97 Grand Targhee 9260 23.8 22.8 104 14.9 17.4 86 Granite Creek 6770 8.7 7.8 112 8.1 10.6 76 Grassy Lake 7265 16.2 15.5 105 19.6 18.2 108 Gros Ventre Summit 8750 7.1 7.1 100 6.6 6.8 97 Gunsight Pass 9820 7.2 6.7 107 7.1 7.5 95 Lewis Lake Divide 7850 19.3 15.4 125 21.6 17.8 121 Loomis Park 8240 8.3 7.4 112 8.4 8.8 95 Phillips Bench 8200 14.8 12.6 117 15.6 13.8 113 Salt River Summit 7640 9.3 5.8 160 9.5 8.1 117 Snake River Station 6920 10.5 8.6 122 12.6 12.4 102 Somsen Ranch 6800 9.2 6.0 153 10.7 9.1 118 Spring Creek Divide 9000 13.5 11.2 121 14.1 12.0 118 Thumb Divide 7980 11.7 7.6 154 11.3 9.4 120 Togwotee Pass 9580 12.1 12.6 96 11.9 13.2 90 Triple Peak 8500 13.4 11.2 120 13.6 12.5 109 Two Ocean Plateau 9240 17.5 16.3 107 14.2 14.8 96 Willow Creek 8080 17.8 13.4 133 17.9 16.7 107 Younts Peak 8350 8.8 7.6 116 8.0 8.0 100 ----- ----- Basin Index (%) 116 103 MADISON HEADWATERS IN WYOMING Black Bear 8170 23.4 20.0 117 23.6 20.4 116 Canyon 7870 8.2 -M * 10.0 -M * Madison Plateau 7750 16.3 11.2 146 17.2 13.6 126 West Yellowstone 6700 9.1 5.6 162 11.7 7.8 150 Whiskey Creek 6800 11.6 7.4 157 15.4 11.0 140 ----- ----- Basin Index (%) 137 129 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 9.7 11.9 82 8.7 11.3 77 Canyon 7870 8.2 -M * 10.0 -M * Evening Star 9200 13.9 14.0 99 16.3 16.0 102 Fisher Creek 9100 19.2 17.9 107 20.2 17.8 113 Monument Peak 8850 11.3 10.8 105 13.5 12.2 111 Northeast Entrance 7350 5.2 4.9 106 7.4 7.2 103 Parker Peak 9400 12.6 11.5 110 13.1 11.2 117 Sylvan Lake 8420 10.2 10.4 98 13.0 13.2 98 Thumb Divide 7980 11.7 7.6 154 11.3 9.4 120 Two Ocean Plateau 9240 17.5 16.3 107 14.2 14.8 96 White Mill 8700 13.4 13.0 103 13.4 12.7 106 Wolverine 7650 6.2 6.0 103 7.0 7.1 99 ----- ----- Basin Index (%) 105 104 WIND RIVER Burroughs Creek 8750 5.7 -M * 6.5 -M * Castle Creek 8400 3.5 3.8 92 4.1 5.0 82 Cold Springs 9630 4.8 4.2 114 5.9 5.3 111 Deer Park 9700 14.0 6.8 206 14.1 8.8 160 Hobbs Park 10100 9.3 7.0 133 8.6 6.7 128 Kirwin 9550 5.2 6.0 87 6.8 6.6 103 Little Warm 9370 5.8 5.3 109 6.7 6.8 99 South Pass 9040 10.9 6.8 160 10.2 8.0 128 St. Lawrence Alt 8620 4.1 -M * 5.8 -M * Togwotee Pass 9580 12.1 12.6 96 11.9 13.2 90 Townsend Creek 8700 6.6 4.4 150 7.5 6.0 125 ----- ----- Basin Index (%) 127 114 BIGHORN BASIN Bald Mtn. 9380 8.5 9.8 87 7.2 8.5 85 Bear Trap Meadow 8200 4.6 3.4 135 5.4 4.7 115 Bone Springs Div 9350 5.6 8.6 65 5.7 8.0 71 Grave Springs 8550 5.9 3.9 151 6.3 5.0 126 Kirwin 9550 5.2 6.0 87 6.8 6.6 103 Marquette 8760 3.7 3.8 97 4.5 5.2 87 Middle Powder 7760 6.6 4.9 135 5.9 5.4 109 Owl Creek 8975 4.2 2.8 150 4.9 3.4 144 Powder River Pass 9480 5.0 5.8 86 6.5 7.0 93 Shell Creek 9580 5.9 8.2 72 6.7 7.4 91 Timber Creek 7950 2.8 2.5 112 3.2 4.4 73 ----- ----- Basin Index (%) 97 96 SHOSHONE RIVER Blackwater 9780 11.6 12.9 90 11.5 12.4 93 Evening Star 9200 13.9 14.0 99 16.3 16.0 102 Marquette 8760 3.7 3.8 97 4.5 5.2 87 Sylvan Lake 8420 10.2 10.4 98 13.0 13.2 98 Sylvan Road 7120 5.6 6.4 88 8.2 10.2 80 Younts Peak 8350 8.8 7.6 116 8.0 8.0 100 ----- ----- Basin Index (%) 98 95 POWDER RIVER Bear Trap Meadow 8200 4.6 3.4 135 5.4 4.7 115 Cloud Peak Reservoir 9860 6.8 7.2 94 6.9 7.0 99 Grave Springs 8550 5.9 3.9 151 6.3 5.0 126 Hansen Sawmill 8360 3.8 3.6 106 4.2 4.6 91 Middle Powder 7760 6.6 4.9 135 5.9 5.4 109 Powder River Pass 9480 5.0 5.8 86 6.5 7.0 93 Soldier Park 8720 2.0 3.0 67 3.5 4.8 73 ----- ----- Basin Index (%) 109 101 TONGUE RIVER Big Goose 7990 4.4 4.0 110 5.2 5.4 96 Bone Springs Div 9350 5.6 8.6 65 5.7 8.0 71 Burgess Junction 7880 5.9 5.4 109 7.3 6.4 114 Dome Lake 8880 4.0 5.5 73 5.8 6.6 88 Little Goose 8870 4.8 4.8 100 5.8 6.2 94 Sucker Creek 8880 6.1 6.1 100 8.1 7.0 116 Tie Creek 6870 3.4 2.6 131 6.2 5.7 109 ----- ----- Basin Index (%) 92 97 BELLE FOURCHE Blind Park 6890 3.6 3.6 100 5.0 5.4 93 Cole Canyon 5910 3.1 2.8 111 4.2 4.6 91 North Rapid Creek 6130 3.6 3.7 97 4.4 4.2 105 ----- ----- Basin Index (%) 102 96 CHEYENNE RIVER BASIN Blind Park 6890 3.6 3.6 100 5.0 5.4 93 North Rapid Creek 6130 3.6 3.7 97 4.4 4.2 105 ----- ----- Basin Index (%) 99 98 UPPER N. PLATTE Arapaho Ridge 10976 13.7 11.3 121 13.8 11.6 119 Blackhall Mtn 9839 18.4 13.3 138 19.1 15.7 122 Cinnabar Park 9707 -M 11.5 * 11.8 13.1 90 Columbine 9167 14.7 11.1 132 14.8 11.9 124 Divide Peak 8730 12.7 9.6 132 15.0 11.8 127 Joe Wright 10158 12.6 9.8 129 15.5 12.7 122 Laprele Creek 8390 5.4 4.2 129 5.6 6.0 93 Med Bow 10512 18.7 -M * 17.7 -M * Never Summer 10323 13.9 9.8 142 9.8 9.4 104 North French Creek 10153 15.1 13.8 109 15.0 14.2 106 Old Battle 9860 20.4 15.2 134 22.0 17.6 125 Rawah 9069 8.7 5.7 153 9.9 8.6 115 Sage Creek Basin 7850 11.4 6.6 173 11.9 7.2 165 Sand Lake 10098 13.4 13.4 100 13.4 12.2 110 South Brush Creek 8495 8.4 5.8 145 7.7 7.2 107 Tower 10620 28.0 19.7 142 27.1 20.5 132 Webber Springs 9260 14.6 10.6 138 15.9 13.4 119 Whiskey Park 9020 20.8 11.7 178 20.0 14.9 134 Willow Creek Pass 9523 9.2 6.5 142 9.9 7.0 141 Zirkel 9338 14.9 14.4 103 17.3 16.6 104 ----- ----- Basin Index (%) 133 119 SWEETWATER Deer Park 9700 14.0 6.8 206 14.1 8.8 160 Larsen Creek 9000 5.8 4.0 145 8.2 6.6 124 South Pass 9040 10.9 6.8 160 10.2 8.0 128 ----- ----- Basin Index (%) 174 139 LOWER N. PLATTE Casper Mtn. 7920 6.8 6.0 113 6.9 7.2 96 Laprele Creek 8390 5.4 4.2 129 5.6 6.0 93 Reno Hill 8430 7.2 6.6 109 8.6 7.4 116 Windy Peak 7915 4.2 3.5 120 5.2 5.2 100 ----- ----- Basin Index (%) 116 102 LARAMIE RIVER Brooklyn Lake 10250 11.9 10.6 112 12.6 10.8 117 Cinnabar Park 9707 -M 11.5 * 11.8 13.1 90 Crow Creek 8335 2.4 4.2 57 4.6 5.9 78 Deadman Hill 10239 9.7 9.0 108 9.0 9.0 100 Rawah 9069 8.7 5.7 153 9.9 8.6 115 Roach 9740 9.8 8.1 121 11.3 9.7 116 Windy Peak 7915 4.2 3.5 120 5.2 5.2 100 ----- ----- Basin Index (%) 114 103 S. PLATTE Crow Creek 8335 2.4 4.2 57 4.6 5.9 78 ----- ----- Basin Index (%) 57 78 LITTLE SNAKE RIVER Battle Mountain 7498 10.3 5.4 191 13.6 8.0 170 Divide Peak 8730 12.7 9.6 132 15.0 11.8 127 Elk River 8739 15.5 8.0 194 14.4 9.9 145 Elkhead Divide 8800 17.6 -M * 17.9 -M * Little Snake River 8928 20.2 13.0 155 24.1 18.0 134 Old Battle 9860 20.4 15.2 134 22.0 17.6 125 Sage Creek Basin 7850 11.4 6.6 173 11.9 7.2 165 Sandstone RS 8152 13.5 6.0 225 14.8 9.2 161 Whiskey Park 9020 20.8 11.7 178 20.0 14.9 134 ----- ----- Basin Index (%) 165 141 UPPER GREEN RIVER Big Sandy Opening 9080 8.5 6.8 125 8.4 7.0 120 Blind Bull Sum 8650 12.1 12.0 101 8.7 10.2 85 East Rim Divide 7930 6.0 5.2 115 6.1 6.3 97 Elkhart Park G.S. 9400 6.8 6.2 110 6.3 6.8 93 Gros Ventre Summit 8750 7.1 7.1 100 6.6 6.8 97 Gunsight Pass 9820 7.2 6.7 107 7.1 7.5 95 Indian Creek 9425 14.9 10.9 137 12.7 10.1 126 Kendall R.S. 7740 6.4 6.3 102 6.8 7.4 92 Larsen Creek 9000 5.8 4.0 145 8.2 6.6 124 Loomis Park 8240 8.3 7.4 112 8.4 8.8 95 New Fork Lake 8340 6.2 5.5 113 -M 6.0 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.2 6.1 118 8.3 7.0 119 Spring Creek Divide 9000 13.5 11.2 121 14.1 12.0 118 Triple Peak 8500 13.4 11.2 120 13.6 12.5 109 ----- ----- Basin Index (%) 116 106 LOWER GREEN RIVER Blacks Fork Jct 8869 7.9 3.8 208 8.1 6.4 127 Buck Pasture 9632 10.9 -M * 12.4 -M * EF Blacks Fork GS 9360 9.2 4.4 209 6.9 5.4 128 Hams Fork 7840 8.2 5.3 155 7.9 5.8 136 Henrys Fork 10182 -M -M * 8.5 -M * Hewinta 9500 6.7 4.6 146 8.7 7.2 121 Hickerson Park 9122 5.2 3.2 162 6.2 5.2 119 Hole-in-Rock 9168 4.7 3.4 138 5.9 5.6 105 Indian Creek 9425 14.9 10.9 137 12.7 10.1 126 Kelley R.S. 8180 10.8 6.8 159 11.3 9.1 124 Spirit Lk 10235 10.2 5.6 182 10.1 8.4 120 Steel Creek Park 10158 11.1 6.8 163 11.0 8.4 131 ----- ----- Basin Index (%) 162 124 UPPER BEAR RIVER Bear River RS 8777 7.4 4.2 176 8.7 6.2 140 Bug Lake 7987 14.0 7.6 184 11.8 9.5 124 Burts Miller Ranch 8000 5.8 3.1 187 8.8 4.3 205 Chalk Creek #1 9171 16.5 10.4 159 16.9 11.4 148 Giveout 6930 6.9 4.2 164 8.1 6.4 127 Hayden Fork 9130 10.6 6.4 166 14.1 10.0 141 Kelley R.S. 8180 10.8 6.8 159 11.3 9.1 124 Lily Lake 9133 9.3 6.0 155 9.6 8.2 117 Monte Cristo 8932 19.6 11.2 175 18.4 12.6 146 Salt River Summit 7640 9.3 5.8 160 9.5 8.1 117 Spring Creek Divide 9000 13.5 11.2 121 14.1 12.0 118 Trial Lake 9992 18.8 9.7 194 19.3 11.0 175 ----- ----- Basin Index (%) 165 138 ----------------------------------------------------------------------------- -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.