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 TUESDAY: JANUARY 24 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.6 10.3 151 23.3 13.1 178 Black Bear 8170 22.4 22.6 99 31.5 23.4 135 Blind Bull Sum 8650 22.2 12.9 172 -M 12.1 * Cottonwood Creek 7670 16.1 11.6 139 22.4 14.8 151 East Rim Divide 7930 10.8 6.4 169 13.1 7.2 182 Grand Targhee 9260 28.3 22.3 127 26.2 19.1 137 Granite Creek 6770 15.9 9.3 171 20.9 12.7 165 Grassy Lake 7265 23.3 18.3 127 34.7 22.3 156 Gros Ventre Summit 8750 9.5 7.8 122 13.7 7.8 176 Gunsight Pass 9820 10.3 7.8 132 14.2 8.4 169 Lewis Lake Divide 7850 20.0 18.0 111 31.6 21.7 146 Phillips Bench 8200 18.7 15.8 118 26.8 17.0 158 Salt River Summit 7760 12.2 7.2 169 17.3 9.9 175 Snake River Station 6920 14.2 9.6 148 23.3 14.4 162 Spring Creek Divide 9000 20.3 12.9 157 23.0 14.4 160 Thumb Divide 7980 10.4 8.8 118 15.8 11.5 137 Togwotee Pass 9580 18.0 13.6 132 21.7 14.9 146 Two Ocean Plateau 9240 23.4 16.0 146 23.7 16.2 146 Willow Creek 8380 19.7 16.0 123 30.6 20.2 151 Younts Peak 8350 12.4 8.8 141 16.7 9.9 169 ----- ----- Basin Index (%) 134 154 MADISON-GALLATIN Black Bear 8170 22.4 22.6 99 31.5 23.4 135 Canyon 7870 9.3 7.7 121 15.5 10.1 153 Madison Plateau 7750 13.5 13.6 99 22.7 16.2 140 West Yellowstone 6700 7.7 6.7 115 15.1 8.9 170 Whiskey Creek 6800 8.8 9.2 96 16.5 12.5 132 ----- ----- Basin Index (%) 103 142 YELLOWSTONE Beartooth Lake 9360 15.4 13.0 118 11.7 12.0 98 Burnt Mtn 5880 4.5 2.4 188 8.4 7.6 111 Canyon 7870 9.3 7.7 121 15.5 10.1 153 Cole Creek 7850 6.1 7.7 79 5.0 7.3 68 Evening Star 9200 18.6 14.8 126 24.9 16.8 148 Fisher Creek 9100 18.2 19.6 93 23.3 19.4 120 Northeast Entrance 7350 6.5 6.0 108 11.7 7.8 150 Parker Peak 9400 16.3 12.1 135 19.0 10.7 178 Sylvan Lake 8420 12.7 12.0 106 23.3 14.0 166 Thumb Divide 7980 10.4 8.8 118 15.8 11.5 137 Two Ocean Plateau 9240 23.4 16.0 146 23.7 16.2 146 White Mill 8700 15.1 13.7 110 18.2 14.5 126 Wolverine 7650 -M 6.5 * -M 7.8 * ----- ----- Basin Index (%) 117 136 WIND RIVER Burroughs Creek 8750 12.2 -M * 14.7 -M * Castle Creek 8400 6.8 -M * 8.9 -M * Cold Springs 9630 6.2 4.2 148 8.6 5.9 146 Deer Park 9700 17.8 8.2 217 20.9 11.7 179 Hobbs Park 10100 12.2 7.7 158 11.9 7.4 161 Kirwin 9550 9.7 5.4 180 12.6 6.9 183 Little Warm 9370 6.7 5.9 114 11.7 7.7 152 Owl Creek 8975 3.9 3.0 130 5.4 3.4 159 South Pass 9040 16.9 8.2 206 16.3 10.3 158 St. Lawrence Alt 8620 3.5 3.8 92 7.5 5.1 147 Togwotee Pass 9580 18.0 13.6 132 21.7 14.9 146 Townsend Creek 8700 6.7 4.8 140 9.4 6.8 138 ----- ----- Basin Index (%) 157 157 BIGHORN BASIN Bald Mtn. 9380 12.0 10.3 117 10.5 10.1 104 Bear Trap Meadow 8200 3.0 3.2 94 4.5 4.9 92 Bone Springs Div 9350 9.3 9.4 99 9.7 9.1 107 Grave Springs 8550 3.6 4.7 77 4.5 6.1 74 Kirwin 9550 9.7 5.4 180 12.6 6.9 183 Marquette 8760 4.7 -M * 8.0 -M * Middle Powder 7760 4.4 6.0 73 4.9 7.0 70 Owl Creek 8975 3.9 3.0 130 5.4 3.4 159 Powder River Pass 9480 3.7 6.0 62 6.5 7.4 88 Shell Creek 9580 9.9 8.7 114 8.0 8.3 96 Timber Creek 7950 3.5 2.9 121 4.9 4.3 114 ----- ----- Basin Index (%) 106 106 SHOSHONE RIVER Blackwater 9780 19.3 13.4 144 23.0 12.5 184 Evening Star 9200 18.6 14.8 126 24.9 16.8 148 Marquette 8760 4.7 -M * 8.0 -M * Sylvan Road 7120 9.3 7.4 126 19.4 11.2 173 Younts Peak 8350 12.4 8.8 141 16.7 9.9 169 ----- ----- Basin Index (%) 134 167 POWDER RIVER Bear Trap Meadow 8200 3.0 3.2 94 4.5 4.9 92 Cloud Peak Reservoir 9860 7.0 7.8 90 8.9 7.5 119 Grave Springs 8550 3.6 4.7 77 4.5 6.1 74 Hansen Sawmill 8360 4.6 3.9 118 6.4 4.8 133 Middle Powder 7760 4.4 6.0 73 4.9 7.0 70 Powder River Pass 9480 3.7 6.0 62 6.5 7.4 88 Soldier Park 8720 7.2 -M * 6.6 -M * ----- ----- Basin Index (%) 83 95 TONGUE RIVER Big Goose 7990 5.1 4.5 113 6.1 6.2 98 Bone Springs Div 9350 9.3 9.4 99 9.7 9.1 107 Burgess Junction 7880 5.4 6.3 86 6.6 7.1 93 Dome Lake 8880 6.3 6.5 97 7.7 7.9 97 Little Goose 8870 5.5 -M * 7.7 -M * Sucker Creek 8880 6.2 6.7 93 6.6 8.2 80 Tie Creek 6870 3.7 3.1 119 6.7 6.8 99 ----- ----- Basin Index (%) 99 96 BELLE FOURCHE Cole Canyon 5910 3.1 3.0 103 4.1 5.5 75 ----- ----- Basin Index (%) 103 75 CHEYENNE RIVER BASIN Blind Park 6890 3.8 4.1 93 4.8 7.3 66 North Rapid Creek 6130 4.0 4.0 100 4.3 5.9 73 ----- ----- Basin Index (%) 96 69 UPPER N. PLATTE Arapaho Ridge 10960 18.6 11.8 158 19.5 13.3 147 Blackhall Mtn 9820 24.9 -M * 26.3 -M * Columbine 9160 18.6 13.6 137 20.5 15.1 136 Divide Peak 8880 13.0 11.4 114 15.2 12.8 119 Joe Wright 10120 14.6 12.3 119 19.9 15.0 133 Laprele Creek 8375 7.1 5.3 134 6.7 7.1 94 Med Bow 10500 25.9 -M * 24.9 -M * North French Creek 10130 16.7 15.0 111 18.2 15.7 116 Never Summer 10280 -M 11.3 * -M -M * Old Battle 10000 24.6 17.6 140 26.1 20.9 125 Rawah 9020 9.8 5.8 169 12.4 8.7 143 Sage Creek Basin 7850 11.0 7.6 145 11.4 9.1 125 Sand Lake 10050 19.3 15.5 125 18.4 14.1 130 South Brush Creek 8440 7.0 6.8 103 8.3 9.0 92 Tower 10500 29.4 25.3 116 31.1 23.7 131 Webber Springs 9250 19.5 12.7 154 23.4 15.9 147 Willow Creek Pass 9540 13.1 6.9 190 14.0 7.8 179 Zirkel 9340 27.0 16.8 161 32.4 17.4 186 ----- ----- Basin Index (%) 135 135 SWEETWATER Deer Park 9700 17.8 8.2 217 20.9 11.7 179 Larsen Creek 9000 12.0 6.7 179 15.5 -M * South Pass 9040 16.9 8.2 206 16.3 10.3 158 ----- ----- Basin Index (%) 202 169 LOWER N. PLATTE Casper Mtn. 7900 6.6 7.2 92 6.6 8.6 77 Laprele Creek 8375 7.1 5.3 134 6.7 7.1 94 Reno Hill 8400 -M 7.3 * -M 8.5 * Windy Peak 7900 5.7 3.9 146 6.2 6.1 102 ----- ----- Basin Index (%) 118 89 LARAMIE RIVER Brooklyn Lake 10240 16.1 11.5 140 14.8 12.0 123 Cinnabar Park 9574 13.1 12.4 106 15.9 14.8 107 Crow Creek 8330 4.2 5.5 76 5.9 6.3 94 Deadman Hill 10220 14.0 9.0 156 14.0 9.6 146 Rawah 9020 9.8 5.8 169 12.4 8.7 143 Roach 9700 12.3 9.5 129 14.6 11.1 132 ----- ----- Basin Index (%) 129 124 S. PLATTE Black Mountain 8920 7.0 -M * 8.3 -M * Crow Creek 8330 4.2 5.5 76 5.9 6.3 94 Deadman Hill 10220 14.0 9.0 156 14.0 9.6 146 ----- ----- Basin Index (%) 126 125 LITTLE SNAKE RIVER Battle Mountain 7440 8.5 6.5 131 11.0 9.1 121 Divide Peak 8880 13.0 11.4 114 15.2 12.8 119 Elk River 8700 15.6 10.1 154 15.3 11.9 129 Little Snake River 8915 22.3 13.8 162 26.8 19.3 139 Old Battle 10000 24.6 17.6 140 26.1 20.9 125 Sage Creek Basin 7850 11.0 7.6 145 11.4 9.1 125 Sandstone RS 8150 10.6 7.4 143 11.1 11.2 99 Whiskey Park 8950 19.2 14.9 129 21.7 16.5 132 ----- ----- Basin Index (%) 140 125 UPPER GREEN RIVER Big Sandy Opening 9080 13.2 7.3 181 15.6 7.9 197 Blind Bull Sum 8650 22.2 12.9 172 -M 12.1 * East Rim Divide 7930 10.8 6.4 169 13.1 7.2 182 Elkhart Park G.S. 9400 9.7 7.0 139 15.0 8.0 188 Gros Ventre Summit 8750 9.5 7.8 122 13.7 7.8 176 Gunsight Pass 9820 10.3 7.8 132 14.2 8.4 169 Kendall R.S. 7740 12.3 7.2 171 16.6 8.6 193 Loomis Park 8240 14.9 9.0 166 19.9 10.6 188 New Fork Lake 8340 9.8 6.4 153 10.1 6.6 153 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 12.2 6.9 177 16.9 8.6 197 Spring Creek Divide 9000 20.3 12.9 157 23.0 14.4 160 Triple Peak 8500 22.0 12.0 183 23.4 15.0 156 ----- ----- Basin Index (%) 161 176 LOWER GREEN RIVER Blacks Fork Jct 8870 8.3 -M * 10.4 -M * Buck Pasture 9700 13.4 -M * 16.0 -M * EF Blacks Fork GS 9360 9.3 -M * 9.6 -M * Hams Fork 7840 11.3 6.7 169 13.2 6.8 194 Hewinta 9519 8.6 5.1 169 10.8 8.1 133 Hickerson Park 9145 5.8 3.4 171 6.1 5.8 105 Hole-in-Rock 9150 4.9 3.7 132 6.7 5.5 122 Indian Creek 9425 21.1 13.6 155 -M 13.1 * Kelley R.S. 8180 15.1 8.4 180 20.2 10.8 187 Spirit Lk 10235 9.6 -M * 11.2 -M * Steel Creek Park 10200 11.7 7.9 148 13.3 9.3 143 ----- ----- Basin Index (%) 161 152 UPPER BEAR RIVER Bear River RS 8777 9.8 -M * 11.5 -M * Bug Lake 7950 -M 9.4 * -M 11.6 * Burts Miller Ranch 8000 5.6 -M * 5.9 -M * Chalk Creek #1 8993 21.6 12.4 174 -M 14.6 * Hayden Fork 9212 15.6 8.0 195 -M 12.3 * Kelley R.S. 8180 15.1 8.4 180 20.2 10.8 187 Lily Lake 9156 10.6 6.9 154 12.9 10.0 129 Monte Cristo 8960 21.4 14.4 149 -M 15.3 * Salt River Summit 7760 12.2 7.2 169 17.3 9.9 175 ----- ----- Basin Index (%) 168 164* ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.