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 5 , 2023 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 8.4 8.0 105 9.4 10.4 90 Blind Bull Sum 8650 11.2 9.9 113 7.8 8.6 91 Cottonwood Creek 7670 10.6 8.8 120 11.4 11.2 102 East Rim Divide 7930 5.4 4.8 112 5.5 5.5 100 Grand Targhee 9260 21.3 20.3 105 13.4 16.4 82 Granite Creek 6770 7.8 6.8 115 7.2 9.4 77 Grassy Lake 7265 14.6 12.9 113 18.0 16.6 108 Gros Ventre Summit 8750 6.3 6.4 98 6.2 6.4 97 Gunsight Pass 9820 6.4 6.2 103 6.3 7.0 90 Lewis Lake Divide 7850 17.7 13.2 134 20.0 16.7 120 Loomis Park 8240 7.5 6.8 110 7.7 7.9 97 Phillips Bench 8200 13.5 11.3 119 13.9 12.9 108 Salt River Summit 7640 7.8 5.0 156 7.9 7.2 110 Snake River Station 6920 9.5 7.2 132 11.5 11.1 104 Somsen Ranch 6800 8.3 5.0 166 9.7 8.5 114 Spring Creek Divide 9000 11.8 10.3 115 12.1 11.0 110 Thumb Divide 7980 10.9 6.6 165 10.5 8.8 119 Togwotee Pass 9580 11.4 11.5 99 11.3 11.8 96 Triple Peak 8500 12.2 9.0 136 12.1 11.0 110 Two Ocean Plateau 9240 16.6 13.8 120 13.2 13.4 99 Willow Creek 8080 15.5 11.6 134 15.8 15.5 102 Younts Peak 8350 8.1 7.0 116 7.2 7.4 97 ----- ----- Basin Index (%) 120 101 MADISON HEADWATERS IN WYOMING Black Bear 8170 21.2 17.2 123 21.5 18.7 115 Canyon 7870 7.6 -M * 9.4 -M * Madison Plateau 7750 14.7 10.3 143 15.7 12.2 129 West Yellowstone 6700 8.2 5.0 164 10.8 7.4 146 Whiskey Creek 6800 10.3 6.5 158 13.6 9.8 139 ----- ----- Basin Index (%) 139 128 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 -M 10.8 * -M 10.0 * Canyon 7870 7.6 -M * 9.4 -M * Evening Star 9200 13.3 13.2 101 15.3 14.9 103 Fisher Creek 9100 17.9 16.4 109 18.8 16.6 113 Monument Peak 8850 10.6 9.4 113 12.9 11.2 115 Northeast Entrance 7350 4.9 4.4 111 7.2 6.9 104 Parker Peak 9400 11.9 10.9 109 12.3 10.5 117 Sylvan Lake 8420 9.6 9.4 102 12.3 12.2 101 Thumb Divide 7980 10.9 6.6 165 10.5 8.8 119 Two Ocean Plateau 9240 16.6 13.8 120 13.2 13.4 99 White Mill 8700 12.6 11.4 111 12.5 11.8 106 Wolverine 7650 6.1 5.6 109 6.7 6.4 105 ----- ----- Basin Index (%) 113 108 WIND RIVER Burroughs Creek 8750 5.4 -M * 6.3 -M * Castle Creek 8400 3.2 3.6 89 3.7 4.6 80 Cold Springs 9630 4.6 4.0 115 5.8 5.1 114 Deer Park 9700 12.8 6.0 213 13.0 8.4 155 Hobbs Park 10100 8.8 6.8 129 8.2 6.4 128 Kirwin 9550 4.8 5.8 83 6.5 6.4 102 Little Warm 9370 5.3 4.7 113 6.2 6.2 100 South Pass 9040 10.0 6.6 152 9.5 7.4 128 St. Lawrence Alt 8620 3.8 -M * 5.5 -M * Togwotee Pass 9580 11.4 11.5 99 11.3 11.8 96 Townsend Creek 8700 6.0 4.2 143 6.9 5.8 119 ----- ----- Basin Index (%) 126 114 BIGHORN BASIN Bald Mtn. 9380 8.4 9.4 89 7.1 8.1 88 Bear Trap Meadow 8200 4.3 3.0 143 5.1 4.4 116 Bone Springs Div 9350 5.4 7.8 69 5.6 7.4 76 Grave Springs 8550 5.1 3.7 138 5.6 4.6 122 Kirwin 9550 4.8 5.8 83 6.5 6.4 102 Marquette 8760 3.6 3.6 100 4.3 5.0 86 Middle Powder 7760 6.2 4.5 138 5.4 5.2 104 Owl Creek 8975 3.8 2.8 136 4.4 3.4 129 Powder River Pass 9480 5.0 5.3 94 6.3 6.6 95 Shell Creek 9580 5.8 7.4 78 6.6 7.0 94 Timber Creek 7950 2.6 2.4 108 2.8 4.2 67 ----- ----- Basin Index (%) 99 96 SHOSHONE RIVER Blackwater 9780 10.8 11.9 91 10.6 11.4 93 Evening Star 9200 13.3 13.2 101 15.3 14.9 103 Marquette 8760 3.6 3.6 100 4.3 5.0 86 Sylvan Lake 8420 9.6 9.4 102 12.3 12.2 101 Sylvan Road 7120 5.3 6.0 88 7.9 9.4 84 Younts Peak 8350 8.1 7.0 116 7.2 7.4 97 ----- ----- Basin Index (%) 99 96 POWDER RIVER Bear Trap Meadow 8200 4.3 3.0 143 5.1 4.4 116 Cloud Peak Reservoir 9860 6.8 6.6 103 6.9 6.6 105 Grave Springs 8550 5.1 3.7 138 5.6 4.6 122 Hansen Sawmill 8360 3.6 3.4 106 4.1 4.2 98 Middle Powder 7760 6.2 4.5 138 5.4 5.2 104 Powder River Pass 9480 5.0 5.3 94 6.3 6.6 95 Soldier Park 8720 1.8 2.6 69 3.4 4.6 74 ----- ----- Basin Index (%) 113 102 TONGUE RIVER Big Goose 7990 4.3 3.6 119 5.2 5.2 100 Bone Springs Div 9350 5.4 7.8 69 5.6 7.4 76 Burgess Junction 7880 5.8 5.0 116 7.2 5.9 122 Dome Lake 8880 3.8 5.1 75 5.7 6.3 90 Little Goose 8870 4.7 4.6 102 5.7 6.0 95 Sucker Creek 8880 6.0 5.6 107 7.9 6.4 123 Tie Creek 6870 3.4 2.2 155 6.1 5.4 113 ----- ----- Basin Index (%) 99 102 BELLE FOURCHE Blind Park 6890 3.7 3.2 116 5.0 5.1 98 Cole Canyon 5910 3.0 2.6 115 4.2 4.2 100 North Rapid Creek 6130 3.6 3.4 106 4.3 3.9 110 ----- ----- Basin Index (%) 112 102 CHEYENNE RIVER BASIN Blind Park 6890 3.7 3.2 116 5.0 5.1 98 North Rapid Creek 6130 3.6 3.4 106 4.3 3.9 110 ----- ----- Basin Index (%) 111 103 UPPER N. PLATTE Arapaho Ridge 10976 11.9 10.4 114 12.1 10.8 112 Blackhall Mtn 9839 15.4 12.7 121 16.4 14.4 114 Cinnabar Park 9707 -M 9.4 * 10.7 12.1 88 Columbine 9167 12.1 9.2 132 12.4 11.1 112 Divide Peak 8730 10.6 8.2 129 12.7 10.4 122 Joe Wright 10158 11.5 9.1 126 14.2 11.8 120 Laprele Creek 8390 4.4 3.8 116 4.8 5.5 87 Med Bow 10512 16.2 -M * 15.8 -M * Never Summer 10323 12.6 8.8 143 8.7 8.5 102 North French Creek 10153 12.6 12.3 102 12.8 12.6 102 Old Battle 9860 16.1 13.2 122 18.0 16.1 112 Rawah 9069 8.0 5.2 154 9.3 7.8 119 Sage Creek Basin 7850 9.7 6.0 162 10.4 6.9 151 Sand Lake 10098 11.4 12.1 94 11.7 11.4 103 South Brush Creek 8495 7.1 5.0 142 6.6 6.4 103 Tower 10620 22.4 17.6 127 22.1 18.0 123 Webber Springs 9260 12.0 9.6 125 13.0 12.1 107 Whiskey Park 9020 16.8 10.0 168 16.6 13.1 127 Willow Creek Pass 9523 8.2 6.0 137 8.8 6.8 129 Zirkel 9338 12.6 10.9 116 15.0 14.4 104 ----- ----- Basin Index (%) 127 112 SWEETWATER Deer Park 9700 12.8 6.0 213 13.0 8.4 155 Larsen Creek 9000 4.4 3.0 147 6.9 5.8 119 South Pass 9040 10.0 6.6 152 9.5 7.4 128 ----- ----- Basin Index (%) 174 136 LOWER N. PLATTE Casper Mtn. 7920 5.5 5.4 102 5.4 6.6 82 Laprele Creek 8390 4.4 3.8 116 4.8 5.5 87 Reno Hill 8430 6.4 6.2 103 7.9 6.7 118 Windy Peak 7915 3.5 3.2 109 4.5 4.9 92 ----- ----- Basin Index (%) 106 95 LARAMIE RIVER Brooklyn Lake 10250 10.4 9.3 112 11.4 9.8 116 Cinnabar Park 9707 -M 9.4 * 10.7 12.1 88 Crow Creek 8335 2.0 3.9 51 4.1 5.7 72 Deadman Hill 10239 8.5 8.0 106 8.0 8.4 95 Rawah 9069 8.0 5.2 154 9.3 7.8 119 Roach 9740 8.6 6.9 125 9.8 9.2 107 Windy Peak 7915 3.5 3.2 109 4.5 4.9 92 ----- ----- Basin Index (%) 112 100 S. PLATTE Crow Creek 8335 2.0 3.9 51 4.1 5.7 72 ----- ----- Basin Index (%) 51 72 LITTLE SNAKE RIVER Battle Mountain 7498 8.7 4.8 181 11.7 7.5 156 Divide Peak 8730 10.6 8.2 129 12.7 10.4 122 Elk River 8739 12.8 7.2 178 12.4 8.8 141 Elkhead Divide 8800 14.0 -M * 14.4 -M * Little Snake River 8928 15.6 11.0 142 19.4 16.0 121 Old Battle 9860 16.1 13.2 122 18.0 16.1 112 Sage Creek Basin 7850 9.7 6.0 162 10.4 6.9 151 Sandstone RS 8152 10.6 5.2 204 12.3 8.4 146 Whiskey Park 9020 16.8 10.0 168 16.6 13.1 127 ----- ----- Basin Index (%) 154 130 UPPER GREEN RIVER Big Sandy Opening 9080 7.0 6.4 109 6.9 6.4 108 Blind Bull Sum 8650 11.2 9.9 113 7.8 8.6 91 East Rim Divide 7930 5.4 4.8 112 5.5 5.5 100 Elkhart Park G.S. 9400 5.9 5.9 100 5.3 6.4 83 Gros Ventre Summit 8750 6.3 6.4 98 6.2 6.4 97 Gunsight Pass 9820 6.4 6.2 103 6.3 7.0 90 Indian Creek 9425 12.6 10.2 124 10.7 9.4 114 Kendall R.S. 7740 5.6 5.6 100 6.1 6.9 88 Larsen Creek 9000 4.4 3.0 147 6.9 5.8 119 Loomis Park 8240 7.5 6.8 110 7.7 7.9 97 New Fork Lake 8340 5.5 5.0 110 -M 5.4 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 6.1 5.4 113 7.3 6.7 109 Spring Creek Divide 9000 11.8 10.3 115 12.1 11.0 110 Triple Peak 8500 12.2 9.0 136 12.1 11.0 110 ----- ----- Basin Index (%) 114 102 LOWER GREEN RIVER Blacks Fork Jct 8869 7.1 3.5 203 7.3 5.9 124 Buck Pasture 9632 9.5 -M * 10.8 -M * EF Blacks Fork GS 9360 8.5 4.0 212 6.2 5.2 119 Hams Fork 7840 6.5 4.8 135 6.2 5.4 115 Henrys Fork 10182 -M -M * 7.6 -M * Hewinta 9500 6.0 4.0 150 7.9 6.7 118 Hickerson Park 9122 4.9 3.1 158 6.0 5.0 120 Hole-in-Rock 9168 4.2 3.1 135 5.7 5.3 108 Indian Creek 9425 12.6 10.2 124 10.7 9.4 114 Kelley R.S. 8180 8.9 6.3 141 9.2 8.0 115 Spirit Lk 10235 9.3 5.4 172 9.3 8.1 115 Steel Creek Park 10158 9.9 6.4 155 9.9 7.6 130 ----- ----- Basin Index (%) 153 118 UPPER BEAR RIVER Bear River RS 8777 6.7 3.8 176 7.8 5.7 137 Bug Lake 7987 11.9 6.6 180 10.1 8.4 120 Burts Miller Ranch 8000 5.6 2.7 207 8.3 4.2 198 Chalk Creek #1 9171 13.5 9.2 147 14.0 10.6 132 Giveout 6930 5.5 3.4 162 6.7 6.0 112 Hayden Fork 9130 8.9 5.6 159 12.2 9.2 133 Kelley R.S. 8180 8.9 6.3 141 9.2 8.0 115 Lily Lake 9133 8.5 5.2 163 8.5 7.6 112 Monte Cristo 8932 16.5 10.2 162 16.3 11.6 141 Salt River Summit 7640 7.8 5.0 156 7.9 7.2 110 Spring Creek Divide 9000 11.8 10.3 115 12.1 11.0 110 Trial Lake 9992 14.7 8.4 175 15.1 10.0 151 ----- ----- Basin Index (%) 157 129 ----------------------------------------------------------------------------- -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.