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 MONDAY: JANUARY 9 , 2023 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 8.7 8.5 102 9.6 11.0 87 Blind Bull Sum 8650 11.4 10.6 108 8.0 8.9 90 Cottonwood Creek 7670 10.8 9.2 117 11.6 11.8 98 East Rim Divide 7930 5.4 5.0 108 5.5 5.8 95 Grand Targhee 9260 22.0 21.8 101 13.8 17.0 81 Granite Creek 6770 7.8 7.2 108 7.3 9.8 74 Grassy Lake 7265 15.2 13.8 110 18.7 17.8 105 Gros Ventre Summit 8750 6.7 6.9 97 6.5 6.8 96 Gunsight Pass 9820 6.6 6.6 100 6.6 7.3 90 Lewis Lake Divide 7850 18.4 14.5 127 20.8 17.1 122 Loomis Park 8240 7.6 7.0 109 7.8 8.4 93 Phillips Bench 8200 13.9 11.6 120 14.7 13.4 110 Salt River Summit 7640 8.0 5.4 148 8.1 7.6 107 Snake River Station 6920 10.0 7.6 132 12.1 11.9 102 Somsen Ranch 6800 8.3 5.4 154 9.9 8.8 112 Spring Creek Divide 9000 12.0 10.8 111 12.5 11.4 110 Thumb Divide 7980 11.3 7.2 157 10.9 9.0 121 Togwotee Pass 9580 11.6 11.9 97 11.5 12.3 93 Triple Peak 8500 12.4 9.7 128 12.6 11.8 107 Two Ocean Plateau 9240 17.0 14.6 116 13.5 14.2 95 Willow Creek 8080 15.9 12.4 128 16.2 16.0 101 Younts Peak 8350 8.6 7.2 119 7.7 7.6 101 ----- ----- Basin Index (%) 116 100 MADISON HEADWATERS IN WYOMING Black Bear 8170 22.2 18.2 122 22.4 19.8 113 Canyon 7870 7.9 -M * 9.6 -M * Madison Plateau 7750 15.4 10.6 145 16.4 12.9 127 West Yellowstone 6700 8.5 5.2 163 11.1 7.8 142 Whiskey Creek 6800 10.8 6.8 159 14.5 10.8 134 ----- ----- Basin Index (%) 139 126 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 9.5 11.4 83 8.6 10.6 81 Canyon 7870 7.9 -M * 9.6 -M * Evening Star 9200 13.5 13.6 99 15.8 15.9 99 Fisher Creek 9100 18.4 16.6 111 19.5 17.4 112 Monument Peak 8850 10.9 10.2 107 13.2 11.8 112 Northeast Entrance 7350 5.1 4.8 106 7.3 7.0 104 Parker Peak 9400 12.2 11.2 109 12.7 10.8 118 Sylvan Lake 8420 9.8 10.0 98 12.4 12.7 98 Thumb Divide 7980 11.3 7.2 157 10.9 9.0 121 Two Ocean Plateau 9240 17.0 14.6 116 13.5 14.2 95 White Mill 8700 12.9 12.0 108 12.9 12.5 103 Wolverine 7650 6.2 6.0 103 6.8 7.0 97 ----- ----- Basin Index (%) 108 104 WIND RIVER Burroughs Creek 8750 5.6 -M * 6.3 -M * Castle Creek 8400 3.3 3.6 92 4.0 4.8 83 Cold Springs 9630 4.6 4.0 115 5.8 5.2 112 Deer Park 9700 12.9 6.6 195 13.1 8.7 151 Hobbs Park 10100 8.9 6.8 131 8.3 6.4 130 Kirwin 9550 5.0 5.8 86 6.6 6.5 102 Little Warm 9370 5.5 5.0 110 6.4 6.4 100 South Pass 9040 10.1 6.6 153 9.9 7.6 130 St. Lawrence Alt 8620 3.9 -M * 5.7 -M * Togwotee Pass 9580 11.6 11.9 97 11.5 12.3 93 Townsend Creek 8700 6.1 4.4 139 7.0 5.9 119 ----- ----- Basin Index (%) 124 114 BIGHORN BASIN Bald Mtn. 9380 8.6 9.6 90 7.3 8.2 89 Bear Trap Meadow 8200 4.5 3.2 141 5.2 4.6 113 Bone Springs Div 9350 5.8 8.1 72 5.8 7.8 74 Grave Springs 8550 5.3 3.8 139 5.7 4.8 119 Kirwin 9550 5.0 5.8 86 6.6 6.5 102 Marquette 8760 3.6 3.8 95 4.4 5.0 88 Middle Powder 7760 6.2 4.8 129 5.6 5.4 104 Owl Creek 8975 4.0 2.8 143 4.6 3.4 135 Powder River Pass 9480 5.0 5.8 86 6.4 7.0 91 Shell Creek 9580 6.0 7.6 79 6.7 7.2 93 Timber Creek 7950 2.6 2.5 104 3.1 4.2 74 ----- ----- Basin Index (%) 98 96 SHOSHONE RIVER Blackwater 9780 11.2 12.3 91 11.2 12.0 93 Evening Star 9200 13.5 13.6 99 15.8 15.9 99 Marquette 8760 3.6 3.8 95 4.4 5.0 88 Sylvan Lake 8420 9.8 10.0 98 12.4 12.7 98 Sylvan Road 7120 5.5 6.1 90 7.9 10.0 79 Younts Peak 8350 8.6 7.2 119 7.7 7.6 101 ----- ----- Basin Index (%) 98 94 POWDER RIVER Bear Trap Meadow 8200 4.5 3.2 141 5.2 4.6 113 Cloud Peak Reservoir 9860 6.9 7.0 99 7.0 6.6 106 Grave Springs 8550 5.3 3.8 139 5.7 4.8 119 Hansen Sawmill 8360 3.9 3.5 111 4.2 4.4 95 Middle Powder 7760 6.2 4.8 129 5.6 5.4 104 Powder River Pass 9480 5.0 5.8 86 6.4 7.0 91 Soldier Park 8720 2.3 2.8 82 3.7 4.8 77 ----- ----- Basin Index (%) 110 101 TONGUE RIVER Big Goose 7990 4.5 3.8 118 5.2 5.3 98 Bone Springs Div 9350 5.8 8.1 72 5.8 7.8 74 Burgess Junction 7880 5.9 5.0 118 7.5 6.2 121 Dome Lake 8880 4.0 5.2 77 5.8 6.6 88 Little Goose 8870 4.8 4.6 104 5.8 6.0 97 Sucker Creek 8880 6.1 6.0 102 8.1 6.8 119 Tie Creek 6870 3.5 2.4 146 6.2 5.5 113 ----- ----- Basin Index (%) 99 100 BELLE FOURCHE Blind Park 6890 3.6 3.5 103 5.0 5.4 93 Cole Canyon 5910 3.2 2.8 114 4.3 4.4 98 North Rapid Creek 6130 3.7 3.6 103 4.4 4.2 105 ----- ----- Basin Index (%) 106 98 CHEYENNE RIVER BASIN Blind Park 6890 3.6 3.5 103 5.0 5.4 93 North Rapid Creek 6130 3.7 3.6 103 4.4 4.2 105 ----- ----- Basin Index (%) 103 98 UPPER N. PLATTE Arapaho Ridge 10976 12.2 11.2 109 12.4 11.4 109 Blackhall Mtn 9839 16.2 13.1 124 17.0 15.4 110 Cinnabar Park 9707 -M 10.6 * 11.1 12.9 86 Columbine 9167 12.8 10.2 125 13.2 11.4 116 Divide Peak 8730 11.4 9.0 127 13.5 11.2 121 Joe Wright 10158 12.0 9.4 128 14.7 12.4 119 Laprele Creek 8390 4.6 4.3 107 4.9 5.8 84 Med Bow 10512 17.0 -M * 16.4 -M * Never Summer 10323 13.0 9.6 135 9.3 8.8 106 North French Creek 10153 13.5 12.8 105 13.5 13.2 102 Old Battle 9860 17.0 14.6 116 18.7 16.8 111 Rawah 9069 8.3 5.4 154 9.5 8.4 113 Sage Creek Basin 7850 10.4 6.4 162 10.9 7.1 154 Sand Lake 10098 12.1 12.7 95 12.2 11.4 107 South Brush Creek 8495 7.8 5.5 142 7.2 7.0 103 Tower 10620 24.1 19.0 127 23.8 19.6 121 Webber Springs 9260 12.2 10.2 120 13.4 12.9 104 Whiskey Park 9020 17.9 11.3 158 17.5 14.4 122 Willow Creek Pass 9523 8.4 6.4 131 9.0 6.9 130 Zirkel 9338 13.1 12.8 102 15.6 15.7 99 ----- ----- Basin Index (%) 123 111 SWEETWATER Deer Park 9700 12.9 6.6 195 13.1 8.7 151 Larsen Creek 9000 4.6 3.2 144 7.1 6.0 118 South Pass 9040 10.1 6.6 153 9.9 7.6 130 ----- ----- Basin Index (%) 168 135 LOWER N. PLATTE Casper Mtn. 7920 5.5 5.8 95 5.6 6.9 81 Laprele Creek 8390 4.6 4.3 107 4.9 5.8 84 Reno Hill 8430 6.6 6.4 103 8.0 7.3 110 Windy Peak 7915 3.8 3.3 115 4.8 5.2 92 ----- ----- Basin Index (%) 104 92 LARAMIE RIVER Brooklyn Lake 10250 10.8 10.0 108 11.7 10.6 110 Cinnabar Park 9707 -M 10.6 * 11.1 12.9 86 Crow Creek 8335 2.3 4.0 58 4.4 5.9 75 Deadman Hill 10239 9.0 8.7 103 8.3 8.8 94 Rawah 9069 8.3 5.4 154 9.5 8.4 113 Roach 9740 8.9 7.6 117 10.3 9.5 108 Windy Peak 7915 3.8 3.3 115 4.8 5.2 92 ----- ----- Basin Index (%) 111 98 S. PLATTE Crow Creek 8335 2.3 4.0 58 4.4 5.9 75 ----- ----- Basin Index (%) 58 75 LITTLE SNAKE RIVER Battle Mountain 7498 9.4 5.2 181 12.5 7.8 160 Divide Peak 8730 11.4 9.0 127 13.5 11.2 121 Elk River 8739 13.6 8.0 170 12.9 9.6 134 Elkhead Divide 8800 15.0 -M * 15.5 -M * Little Snake River 8928 16.5 11.9 139 20.4 16.8 121 Old Battle 9860 17.0 14.6 116 18.7 16.8 111 Sage Creek Basin 7850 10.4 6.4 162 10.9 7.1 154 Sandstone RS 8152 11.5 5.6 205 13.3 8.8 151 Whiskey Park 9020 17.9 11.3 158 17.5 14.4 122 ----- ----- Basin Index (%) 150 129 UPPER GREEN RIVER Big Sandy Opening 9080 7.3 6.6 111 7.2 6.6 109 Blind Bull Sum 8650 11.4 10.6 108 8.0 8.9 90 East Rim Divide 7930 5.4 5.0 108 5.5 5.8 95 Elkhart Park G.S. 9400 6.1 6.0 102 5.5 6.6 83 Gros Ventre Summit 8750 6.7 6.9 97 6.5 6.8 96 Gunsight Pass 9820 6.6 6.6 100 6.6 7.3 90 Indian Creek 9425 13.0 10.5 124 11.1 9.7 114 Kendall R.S. 7740 5.9 5.6 105 6.2 7.0 89 Larsen Creek 9000 4.6 3.2 144 7.1 6.0 118 Loomis Park 8240 7.6 7.0 109 7.8 8.4 93 New Fork Lake 8340 5.6 5.2 108 -M 5.6 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 6.2 5.8 107 7.4 6.8 109 Spring Creek Divide 9000 12.0 10.8 111 12.5 11.4 110 Triple Peak 8500 12.4 9.7 128 12.6 11.8 107 ----- ----- Basin Index (%) 111 101 LOWER GREEN RIVER Blacks Fork Jct 8869 7.4 3.8 195 7.5 6.1 123 Buck Pasture 9632 10.0 -M * 11.3 -M * EF Blacks Fork GS 9360 8.8 4.2 210 6.5 5.4 120 Hams Fork 7840 6.6 5.1 129 6.4 5.8 110 Henrys Fork 10182 -M -M * 7.8 -M * Hewinta 9500 6.2 4.3 144 8.3 7.0 119 Hickerson Park 9122 5.1 3.2 159 6.0 5.2 115 Hole-in-Rock 9168 4.5 3.2 141 5.8 5.5 105 Indian Creek 9425 13.0 10.5 124 11.1 9.7 114 Kelley R.S. 8180 9.2 6.6 139 9.5 8.8 108 Spirit Lk 10235 9.4 5.7 165 9.4 8.3 113 Steel Creek Park 10158 10.3 6.6 156 10.2 8.2 124 ----- ----- Basin Index (%) 151 115 UPPER BEAR RIVER Bear River RS 8777 6.8 4.0 170 8.1 6.0 135 Bug Lake 7987 12.2 7.0 174 10.4 9.0 116 Burts Miller Ranch 8000 5.6 2.9 193 8.5 4.2 202 Chalk Creek #1 9171 13.9 9.8 142 14.6 11.2 130 Giveout 6930 5.6 4.0 140 6.9 6.4 108 Hayden Fork 9130 9.2 6.2 148 12.8 10.0 128 Kelley R.S. 8180 9.2 6.6 139 9.5 8.8 108 Lily Lake 9133 8.8 5.6 157 8.8 8.0 110 Monte Cristo 8932 17.2 10.9 158 17.0 12.4 137 Salt River Summit 7640 8.0 5.4 148 8.1 7.6 107 Spring Creek Divide 9000 12.0 10.8 111 12.5 11.4 110 Trial Lake 9992 15.4 9.0 171 16.1 10.6 152 ----- ----- Basin Index (%) 151 126 ----------------------------------------------------------------------------- -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.