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 14 , 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 11.9 88 Blind Bull Sum 8650 12.3 12.2 101 8.8 10.4 85 Cottonwood Creek 7670 12.4 10.2 122 13.4 12.8 105 East Rim Divide 7930 6.0 5.4 111 6.2 6.4 97 Grand Targhee 9260 23.9 22.6 106 15.0 17.6 85 Granite Creek 6770 8.7 8.2 106 8.1 10.8 75 Grassy Lake 7265 16.3 15.6 104 19.6 18.8 104 Gros Ventre Summit 8750 7.2 7.2 100 6.8 6.8 100 Gunsight Pass 9820 7.2 6.8 106 7.2 7.5 96 Lewis Lake Divide 7850 19.4 15.6 124 21.6 18.4 117 Loomis Park 8240 8.3 7.6 109 8.5 9.0 94 Phillips Bench 8200 14.9 13.0 115 15.7 14.4 109 Salt River Summit 7640 9.5 6.0 158 9.7 8.2 118 Snake River Station 6920 10.5 9.0 117 12.6 12.9 98 Somsen Ranch 6800 9.2 6.4 144 10.9 9.2 118 Spring Creek Divide 9000 13.7 11.6 118 14.3 12.1 118 Thumb Divide 7980 11.7 7.7 152 11.3 9.4 120 Togwotee Pass 9580 12.2 12.8 95 12.0 13.2 91 Triple Peak 8500 13.4 11.4 118 13.7 12.8 107 Two Ocean Plateau 9240 17.5 16.4 107 14.2 15.0 95 Willow Creek 8080 18.0 13.6 132 18.2 17.1 106 Younts Peak 8350 8.9 7.9 113 8.1 8.1 100 ----- ----- Basin Index (%) 114 101 MADISON HEADWATERS IN WYOMING Black Bear 8170 23.5 20.5 115 23.8 20.7 115 Canyon 7870 8.2 -M * 10.0 -M * Madison Plateau 7750 16.4 11.4 144 17.3 13.6 127 West Yellowstone 6700 9.2 5.7 161 11.8 7.9 149 Whiskey Creek 6800 11.7 7.6 154 15.2 11.2 136 ----- ----- Basin Index (%) 135 128 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 9.8 12.4 79 8.9 11.4 78 Canyon 7870 8.2 -M * 10.0 -M * Evening Star 9200 14.1 14.6 97 16.5 16.2 102 Fisher Creek 9100 19.2 18.1 106 20.4 18.0 113 Monument Peak 8850 11.5 11.2 103 13.6 12.6 108 Northeast Entrance 7350 5.2 5.0 104 7.4 7.2 103 Parker Peak 9400 12.7 11.5 110 13.2 11.4 116 Sylvan Lake 8420 10.2 10.6 96 12.9 13.2 98 Thumb Divide 7980 11.7 7.7 152 11.3 9.4 120 Two Ocean Plateau 9240 17.5 16.4 107 14.2 15.0 95 White Mill 8700 13.5 13.4 101 13.5 13.1 103 Wolverine 7650 6.3 6.2 102 7.0 7.3 96 ----- ----- Basin Index (%) 104 103 WIND RIVER Burroughs Creek 8750 5.9 -M * 6.5 -M * Castle Creek 8400 3.6 3.8 95 4.3 5.0 86 Cold Springs 9630 4.9 4.2 117 6.0 5.3 113 Deer Park 9700 14.0 7.0 200 14.3 8.9 161 Hobbs Park 10100 9.5 7.0 136 8.9 6.7 133 Kirwin 9550 5.3 6.1 87 7.0 6.8 103 Little Warm 9370 5.9 5.4 109 6.9 6.9 100 South Pass 9040 10.9 6.8 160 10.7 8.0 134 St. Lawrence Alt 8620 4.3 -M * 6.2 -M * Togwotee Pass 9580 12.2 12.8 95 12.0 13.2 91 Townsend Creek 8700 6.7 4.4 152 7.7 6.0 128 ----- ----- Basin Index (%) 127 116 BIGHORN BASIN Bald Mtn. 9380 8.7 10.0 87 7.4 8.6 86 Bear Trap Meadow 8200 4.7 3.4 138 5.5 4.7 117 Bone Springs Div 9350 5.9 8.6 69 5.8 8.2 71 Grave Springs 8550 6.0 4.0 150 6.4 5.0 128 Kirwin 9550 5.3 6.1 87 7.0 6.8 103 Marquette 8760 3.9 3.8 103 4.6 5.3 87 Middle Powder 7760 6.6 4.9 135 5.9 5.4 109 Owl Creek 8975 4.3 2.8 154 5.1 3.5 146 Powder River Pass 9480 5.0 6.1 82 6.6 7.2 92 Shell Creek 9580 6.1 8.3 73 6.8 7.6 89 Timber Creek 7950 2.8 2.6 108 3.4 4.4 77 ----- ----- Basin Index (%) 98 97 SHOSHONE RIVER Blackwater 9780 11.7 13.0 90 11.7 12.5 94 Evening Star 9200 14.1 14.6 97 16.5 16.2 102 Marquette 8760 3.9 3.8 103 4.6 5.3 87 Sylvan Lake 8420 10.2 10.6 96 12.9 13.2 98 Sylvan Road 7120 5.7 6.6 86 8.1 10.3 79 Younts Peak 8350 8.9 7.9 113 8.1 8.1 100 ----- ----- Basin Index (%) 96 94 POWDER RIVER Bear Trap Meadow 8200 4.7 3.4 138 5.5 4.7 117 Cloud Peak Reservoir 9860 6.9 7.2 96 7.1 7.2 99 Grave Springs 8550 6.0 4.0 150 6.4 5.0 128 Hansen Sawmill 8360 4.0 3.6 111 4.3 4.6 93 Middle Powder 7760 6.6 4.9 135 5.9 5.4 109 Powder River Pass 9480 5.0 6.1 82 6.6 7.2 92 Soldier Park 8720 2.4 3.2 75 3.8 5.0 76 ----- ----- Basin Index (%) 110 101 TONGUE RIVER Big Goose 7990 4.5 4.0 112 5.1 5.4 94 Bone Springs Div 9350 5.9 8.6 69 5.8 8.2 71 Burgess Junction 7880 6.0 5.4 111 7.4 6.6 112 Dome Lake 8880 4.2 5.7 74 5.8 6.8 85 Little Goose 8870 4.8 4.8 100 5.8 6.2 94 Sucker Creek 8880 6.2 6.2 100 8.2 7.2 114 Tie Creek 6870 3.6 2.6 138 6.3 5.7 111 ----- ----- Basin Index (%) 94 96 BELLE FOURCHE Blind Park 6890 3.6 3.8 95 5.1 5.5 93 Cole Canyon 5910 3.2 2.8 114 4.3 4.6 93 North Rapid Creek 6130 3.8 3.7 103 4.3 4.4 98 ----- ----- Basin Index (%) 103 94 CHEYENNE RIVER BASIN Blind Park 6890 3.6 3.8 95 5.1 5.5 93 North Rapid Creek 6130 3.8 3.7 103 4.3 4.4 98 ----- ----- Basin Index (%) 99 95 UPPER N. PLATTE Arapaho Ridge 10976 13.8 11.4 121 13.8 12.2 113 Blackhall Mtn 9839 18.5 13.9 133 19.2 15.9 121 Cinnabar Park 9707 -M 11.6 * 11.8 13.2 89 Columbine 9167 14.9 11.2 133 14.9 12.8 116 Divide Peak 8730 12.8 9.8 131 15.1 12.0 126 Joe Wright 10158 12.8 9.8 131 15.5 13.0 119 Laprele Creek 8390 5.4 4.4 123 5.7 6.2 92 Med Bow 10512 18.8 -M * 17.8 -M * Never Summer 10323 13.9 10.2 136 9.8 9.5 103 North French Creek 10153 15.2 14.2 107 15.1 14.4 105 Old Battle 9860 20.5 15.4 133 22.3 17.8 125 Rawah 9069 8.7 6.0 145 9.8 9.0 109 Sage Creek Basin 7850 11.4 6.7 170 12.0 7.7 156 Sand Lake 10098 13.6 13.8 99 13.6 12.2 111 South Brush Creek 8495 8.4 6.0 140 7.8 7.4 105 Tower 10620 28.0 20.5 137 27.2 20.8 131 Webber Springs 9260 14.5 10.8 134 16.0 13.8 116 Whiskey Park 9020 21.0 12.4 169 20.0 15.3 131 Willow Creek Pass 9523 9.2 6.6 139 9.9 7.1 139 Zirkel 9338 15.1 14.6 103 17.7 16.8 105 ----- ----- Basin Index (%) 130 117 SWEETWATER Deer Park 9700 14.0 7.0 200 14.3 8.9 161 Larsen Creek 9000 6.0 4.0 150 8.4 6.6 127 South Pass 9040 10.9 6.8 160 10.7 8.0 134 ----- ----- Basin Index (%) 174 142 LOWER N. PLATTE Casper Mtn. 7920 6.8 6.0 113 6.9 7.4 93 Laprele Creek 8390 5.4 4.4 123 5.7 6.2 92 Reno Hill 8430 7.4 6.6 112 8.7 7.4 118 Windy Peak 7915 4.4 3.6 122 5.3 5.3 100 ----- ----- Basin Index (%) 117 101 LARAMIE RIVER Brooklyn Lake 10250 11.9 10.8 110 12.7 11.1 114 Cinnabar Park 9707 -M 11.6 * 11.8 13.2 89 Crow Creek 8335 2.5 4.4 57 4.7 5.9 80 Deadman Hill 10239 9.7 9.0 108 9.0 9.2 98 Rawah 9069 8.7 6.0 145 9.8 9.0 109 Roach 9740 9.9 8.2 121 11.4 10.1 113 Windy Peak 7915 4.4 3.6 122 5.3 5.3 100 ----- ----- Basin Index (%) 112 101 S. PLATTE Crow Creek 8335 2.5 4.4 57 4.7 5.9 80 ----- ----- Basin Index (%) 57 80 LITTLE SNAKE RIVER Battle Mountain 7498 10.2 5.6 182 13.7 8.2 167 Divide Peak 8730 12.8 9.8 131 15.1 12.0 126 Elk River 8739 15.7 8.4 187 14.7 10.2 144 Elkhead Divide 8800 17.7 -M * 18.0 -M * Little Snake River 8928 20.2 13.2 153 24.1 18.4 131 Old Battle 9860 20.5 15.4 133 22.3 17.8 125 Sage Creek Basin 7850 11.4 6.7 170 12.0 7.7 156 Sandstone RS 8152 13.4 6.3 213 14.9 9.4 159 Whiskey Park 9020 21.0 12.4 169 20.0 15.3 131 ----- ----- Basin Index (%) 161 138 UPPER GREEN RIVER Big Sandy Opening 9080 8.7 6.8 128 8.6 7.0 123 Blind Bull Sum 8650 12.3 12.2 101 8.8 10.4 85 East Rim Divide 7930 6.0 5.4 111 6.2 6.4 97 Elkhart Park G.S. 9400 7.0 6.4 109 6.4 6.9 93 Gros Ventre Summit 8750 7.2 7.2 100 6.8 6.8 100 Gunsight Pass 9820 7.2 6.8 106 7.2 7.5 96 Indian Creek 9425 15.1 11.2 135 12.9 10.4 124 Kendall R.S. 7740 6.5 6.3 103 6.9 7.4 93 Larsen Creek 9000 6.0 4.0 150 8.4 6.6 127 Loomis Park 8240 8.3 7.6 109 8.5 9.0 94 New Fork Lake 8340 6.2 5.7 109 -M 6.0 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.2 6.3 114 8.4 7.3 115 Spring Creek Divide 9000 13.7 11.6 118 14.3 12.1 118 Triple Peak 8500 13.4 11.4 118 13.7 12.8 107 ----- ----- Basin Index (%) 115 106 LOWER GREEN RIVER Blacks Fork Jct 8869 8.1 3.8 213 8.2 6.6 124 Buck Pasture 9632 11.0 -M * 12.4 -M * EF Blacks Fork GS 9360 9.5 4.4 216 7.1 5.6 127 Hams Fork 7840 8.3 5.6 148 8.0 5.9 136 Henrys Fork 10182 -M -M * 8.1 -M * Hewinta 9500 6.8 4.6 148 8.9 7.2 124 Hickerson Park 9122 5.5 3.3 167 6.2 5.4 115 Hole-in-Rock 9168 5.1 3.5 146 6.3 5.6 112 Indian Creek 9425 15.1 11.2 135 12.9 10.4 124 Kelley R.S. 8180 11.0 7.1 155 11.4 9.1 125 Spirit Lk 10235 10.5 5.7 184 10.3 8.5 121 Steel Creek Park 10158 11.2 7.0 160 11.0 8.6 128 ----- ----- Basin Index (%) 162 124 UPPER BEAR RIVER Bear River RS 8777 7.4 4.2 176 8.8 6.4 138 Bug Lake 7987 14.0 8.0 175 11.8 9.5 124 Burts Miller Ranch 8000 6.0 3.1 194 9.0 4.4 205 Chalk Creek #1 9171 16.6 10.8 154 17.2 11.8 146 Giveout 6930 7.0 4.2 167 8.2 6.6 124 Hayden Fork 9130 10.6 6.6 161 14.2 10.4 137 Kelley R.S. 8180 11.0 7.1 155 11.4 9.1 125 Lily Lake 9133 9.5 6.2 153 9.5 8.4 113 Monte Cristo 8932 19.7 11.9 166 19.1 12.8 149 Salt River Summit 7640 9.5 6.0 158 9.7 8.2 118 Spring Creek Divide 9000 13.7 11.6 118 14.3 12.1 118 Trial Lake 9992 18.9 9.8 193 19.3 11.3 171 ----- ----- Basin Index (%) 161 137 ----------------------------------------------------------------------------- -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.