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 28 , 2023 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 10.4 11.0 95 11.7 13.4 87 Blind Bull Sum 8650 13.2 14.3 92 9.5 11.4 83 Cottonwood Creek 7670 14.1 12.4 114 15.1 14.8 102 East Rim Divide 7930 7.0 6.8 103 6.7 7.2 93 Grand Targhee 9260 28.1 26.0 108 17.4 20.0 87 Granite Creek 6770 9.5 10.0 95 8.8 12.2 72 Grassy Lake 7265 18.2 18.8 97 21.7 23.0 94 Gros Ventre Summit 8750 7.4 7.8 95 7.0 7.7 91 Gunsight Pass 9820 7.9 8.0 99 7.8 8.6 91 Lewis Lake Divide 7850 21.0 18.8 112 23.0 21.6 106 Loomis Park 8240 8.9 9.2 97 9.1 10.2 89 Phillips Bench 8200 16.8 15.8 106 17.4 16.8 104 Salt River Summit 7640 10.6 7.4 143 10.6 9.3 114 Snake River Station 6920 11.3 10.7 106 13.6 14.7 93 Somsen Ranch 6800 10.6 7.9 134 12.3 10.6 116 Spring Creek Divide 9000 14.7 14.2 104 15.6 14.4 108 Thumb Divide 7980 12.6 9.7 130 12.1 11.4 106 Togwotee Pass 9580 13.3 14.2 94 12.8 14.6 88 Triple Peak 8500 14.1 13.2 107 14.4 15.2 95 Two Ocean Plateau 9240 18.8 18.0 104 15.3 16.2 94 Willow Creek 8080 20.4 16.4 124 20.2 19.6 103 Younts Peak 8350 9.2 8.8 105 8.4 9.2 91 ----- ----- Basin Index (%) 107 96 MADISON HEADWATERS IN WYOMING Black Bear 8170 26.0 22.3 117 26.1 22.7 115 Canyon 7870 8.9 -M * 11.0 -M * Madison Plateau 7750 18.1 13.6 133 18.6 15.2 122 West Yellowstone 6700 10.1 6.8 149 12.8 9.0 142 Whiskey Creek 6800 12.8 9.0 142 16.4 12.0 137 ----- ----- Basin Index (%) 130 125 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 10.7 13.9 77 9.5 12.4 77 Canyon 7870 8.9 -M * 11.0 -M * Evening Star 9200 15.1 16.9 89 17.5 18.0 97 Fisher Creek 9100 20.8 20.5 101 21.9 20.1 109 Monument Peak 8850 12.7 13.1 97 14.9 14.1 106 Northeast Entrance 7350 6.0 6.2 97 8.2 8.2 100 Parker Peak 9400 14.3 13.2 108 14.6 12.6 116 Sylvan Lake 8420 11.7 12.2 96 13.9 14.4 97 Thumb Divide 7980 12.6 9.7 130 12.1 11.4 106 Two Ocean Plateau 9240 18.8 18.0 104 15.3 16.2 94 White Mill 8700 14.7 14.8 99 14.4 14.6 99 Wolverine 7650 7.3 7.6 96 7.9 8.2 96 ----- ----- Basin Index (%) 99 100 WIND RIVER Burroughs Creek 8750 6.1 -M * 6.8 -M * Castle Creek 8400 3.7 4.4 84 4.2 5.8 72 Cold Springs 9630 5.2 4.8 108 6.4 5.8 110 Deer Park 9700 14.3 7.8 183 14.4 10.1 143 Hobbs Park 10100 9.9 7.7 129 9.2 7.0 131 Kirwin 9550 5.5 6.6 83 7.2 7.5 96 Little Warm 9370 6.2 6.0 103 7.0 7.6 92 South Pass 9040 11.2 7.9 142 11.0 9.2 120 St. Lawrence Alt 8620 4.5 -M * 6.2 -M * Togwotee Pass 9580 13.3 14.2 94 12.8 14.6 88 Townsend Creek 8700 7.1 5.0 142 8.0 6.5 123 ----- ----- Basin Index (%) 119 108 BIGHORN BASIN Bald Mtn. 9380 11.1 10.9 102 9.2 9.6 96 Bear Trap Meadow 8200 5.4 3.8 142 6.0 5.2 115 Bone Springs Div 9350 7.5 9.6 78 6.9 8.8 78 Grave Springs 8550 6.6 4.7 140 7.0 5.6 125 Kirwin 9550 5.5 6.6 83 7.2 7.5 96 Marquette 8760 4.3 3.9 110 5.0 5.6 89 Middle Powder 7760 7.4 5.8 128 6.5 5.9 110 Owl Creek 8975 4.5 3.2 141 5.1 3.8 134 Powder River Pass 9480 6.3 6.6 95 7.9 8.0 99 Shell Creek 9580 7.4 9.0 82 8.0 8.4 95 Timber Creek 7950 3.2 2.8 114 3.7 4.6 80 ----- ----- Basin Index (%) 103 99 SHOSHONE RIVER Blackwater 9780 12.2 14.2 86 12.1 13.6 89 Evening Star 9200 15.1 16.9 89 17.5 18.0 97 Marquette 8760 4.3 3.9 110 5.0 5.6 89 Sylvan Lake 8420 11.7 12.2 96 13.9 14.4 97 Sylvan Road 7120 6.3 7.8 81 9.1 11.4 80 Younts Peak 8350 9.2 8.8 105 8.4 9.2 91 ----- ----- Basin Index (%) 92 91 POWDER RIVER Bear Trap Meadow 8200 5.4 3.8 142 6.0 5.2 115 Cloud Peak Reservoir 9860 8.4 8.2 102 8.4 8.0 105 Grave Springs 8550 6.6 4.7 140 7.0 5.6 125 Hansen Sawmill 8360 4.4 4.1 107 4.6 5.0 92 Middle Powder 7760 7.4 5.8 128 6.5 5.9 110 Powder River Pass 9480 6.3 6.6 95 7.9 8.0 99 Soldier Park 8720 2.9 3.5 83 4.3 5.5 78 ----- ----- Basin Index (%) 113 103 TONGUE RIVER Big Goose 7990 5.9 4.6 128 6.5 5.8 112 Bone Springs Div 9350 7.5 9.6 78 6.9 8.8 78 Burgess Junction 7880 7.7 6.3 122 9.0 7.4 122 Dome Lake 8880 5.3 6.5 82 7.1 7.4 96 Little Goose 8870 6.4 5.6 114 7.3 6.8 107 Sucker Creek 8880 8.4 7.2 117 10.6 8.2 129 Tie Creek 6870 5.5 3.2 172 8.2 6.4 128 ----- ----- Basin Index (%) 109 109 BELLE FOURCHE Blind Park 6890 5.1 4.5 113 6.6 6.3 105 Cole Canyon 5910 4.4 3.2 138 5.6 5.2 108 North Rapid Creek 6130 4.6 4.3 107 5.4 5.0 108 ----- ----- Basin Index (%) 118 107 CHEYENNE RIVER BASIN Blind Park 6890 5.1 4.5 113 6.6 6.3 105 North Rapid Creek 6130 4.6 4.3 107 5.4 5.0 108 ----- ----- Basin Index (%) 110 106 UPPER N. PLATTE Arapaho Ridge 10976 15.9 13.4 119 15.8 13.6 116 Blackhall Mtn 9839 22.0 17.2 128 22.2 18.1 123 Cinnabar Park 9707 -M 12.8 * 14.5 15.0 97 Columbine 9167 17.8 13.4 133 17.1 14.7 116 Divide Peak 8730 15.8 11.6 136 17.6 13.4 131 Joe Wright 10158 15.2 11.4 133 17.6 15.0 117 Laprele Creek 8390 7.3 5.2 140 7.5 6.6 114 Med Bow 10512 22.9 -M * 20.4 -M * Never Summer 10323 15.9 11.0 145 11.4 10.2 112 North French Creek 10153 18.4 16.3 113 18.0 15.8 114 Old Battle 9860 23.5 18.4 128 24.2 20.4 119 Rawah 9069 9.9 6.8 146 11.1 9.6 116 Sage Creek Basin 7850 13.9 8.7 160 13.6 8.5 160 Sand Lake 10098 16.3 15.6 104 16.2 14.9 109 South Brush Creek 8495 10.0 7.0 143 9.4 8.2 115 Tower 10620 33.1 25.2 131 30.2 24.8 122 Webber Springs 9260 16.4 12.6 130 18.2 15.4 118 Whiskey Park 9020 24.4 15.8 154 22.9 17.7 129 Willow Creek Pass 9523 10.6 7.6 139 11.1 8.2 135 Zirkel 9338 18.0 16.6 108 20.3 18.9 107 ----- ----- Basin Index (%) 130 119 SWEETWATER Deer Park 9700 14.3 7.8 183 14.4 10.1 143 Larsen Creek 9000 6.2 4.8 129 8.6 7.8 110 South Pass 9040 11.2 7.9 142 11.0 9.2 120 ----- ----- Basin Index (%) 155 125 LOWER N. PLATTE Casper Mtn. 7920 8.7 7.2 121 8.7 8.2 106 Laprele Creek 8390 7.3 5.2 140 7.5 6.6 114 Reno Hill 8430 9.4 8.0 118 10.7 8.4 127 Windy Peak 7915 6.0 4.2 143 7.0 6.1 115 ----- ----- Basin Index (%) 128 116 LARAMIE RIVER Brooklyn Lake 10250 14.5 12.3 118 15.2 12.8 119 Cinnabar Park 9707 -M 12.8 * 14.5 15.0 97 Crow Creek 8335 3.7 4.9 76 5.6 6.5 86 Deadman Hill 10239 11.0 10.4 106 10.2 10.3 99 Rawah 9069 9.9 6.8 146 11.1 9.6 116 Roach 9740 11.6 9.5 122 12.9 11.4 113 Windy Peak 7915 6.0 4.2 143 7.0 6.1 115 ----- ----- Basin Index (%) 118 107 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 11.8 6.8 174 15.3 9.7 158 Divide Peak 8730 15.8 11.6 136 17.6 13.4 131 Elk River 8739 17.6 10.6 166 16.2 11.6 140 Elkhead Divide 8800 19.6 -M * 18.4 -M * Little Snake River 8928 23.1 15.0 154 25.4 21.2 120 Old Battle 9860 23.5 18.4 128 24.2 20.4 119 Sage Creek Basin 7850 13.9 8.7 160 13.6 8.5 160 Sandstone RS 8152 15.2 7.8 195 16.7 11.2 149 Whiskey Park 9020 24.4 15.8 154 22.9 17.7 129 ----- ----- Basin Index (%) 153 134 UPPER GREEN RIVER Big Sandy Opening 9080 9.1 8.0 114 9.0 7.8 115 Blind Bull Sum 8650 13.2 14.3 92 9.5 11.4 83 East Rim Divide 7930 7.0 6.8 103 6.7 7.2 93 Elkhart Park G.S. 9400 7.5 7.4 101 6.7 7.8 86 Gros Ventre Summit 8750 7.4 7.8 95 7.0 7.7 91 Gunsight Pass 9820 7.9 8.0 99 7.8 8.6 91 Indian Creek 9425 16.4 13.4 122 14.0 12.4 113 Kendall R.S. 7740 7.0 7.3 96 7.3 8.5 86 Larsen Creek 9000 6.2 4.8 129 8.6 7.8 110 Loomis Park 8240 8.9 9.2 97 9.1 10.2 89 New Fork Lake 8340 6.6 6.7 99 -M 6.7 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.9 7.8 101 9.1 8.6 106 Spring Creek Divide 9000 14.7 14.2 104 15.6 14.4 108 Triple Peak 8500 14.1 13.2 107 14.4 15.2 95 ----- ----- Basin Index (%) 104 98 LOWER GREEN RIVER Blacks Fork Jct 8869 8.5 5.0 170 8.7 7.4 118 Buck Pasture 9632 11.7 -M * 13.4 -M * EF Blacks Fork GS 9360 9.4 6.0 157 7.2 6.5 111 Hams Fork 7840 9.1 7.0 130 8.7 7.0 124 Henrys Fork 10182 -M -M * 9.1 -M * Hewinta 9500 7.6 5.2 146 9.7 8.3 117 Hickerson Park 9122 6.2 3.9 159 6.9 6.0 115 Hole-in-Rock 9168 5.6 4.0 140 6.7 6.2 108 Indian Creek 9425 16.4 13.4 122 14.0 12.4 113 Kelley R.S. 8180 12.1 8.6 141 12.7 10.7 119 Spirit Lk 10235 12.0 6.5 185 11.7 9.6 122 Steel Creek Park 10158 12.0 8.4 143 11.9 9.3 128 ----- ----- Basin Index (%) 145 118 UPPER BEAR RIVER Bear River RS 8777 7.8 5.5 142 9.5 7.2 132 Bug Lake 7987 15.7 9.6 164 12.9 11.0 117 Burts Miller Ranch 8000 6.1 3.6 169 9.5 5.1 186 Chalk Creek #1 9171 17.8 11.8 151 17.7 14.0 126 Giveout 6930 7.7 5.6 138 9.0 7.4 122 Hayden Fork 9130 11.8 8.0 148 15.8 12.0 132 Kelley R.S. 8180 12.1 8.6 141 12.7 10.7 119 Lily Lake 9133 10.4 7.2 144 10.6 9.4 113 Monte Cristo 8932 22.2 14.2 156 20.8 15.6 133 Salt River Summit 7640 10.6 7.4 143 10.6 9.3 114 Spring Creek Divide 9000 14.7 14.2 104 15.6 14.4 108 Trial Lake 9992 20.7 11.8 175 20.7 13.6 152 ----- ----- Basin Index (%) 147 128 ----------------------------------------------------------------------------- -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.