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 WEDNESDAY: FEBRUARY 8 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 19.8 11.2 177 26.5 14.6 182 Black Bear 8170 27.2 24.7 110 35.7 26.0 137 Blind Bull Sum 8650 28.7 14.9 193 -M 13.5 * Cottonwood Creek 7670 19.2 13.6 141 25.7 16.6 155 East Rim Divide 7930 14.4 7.0 206 16.2 8.1 200 Grand Targhee 9260 30.5 24.6 124 28.7 21.6 133 Granite Creek 6770 21.1 11.3 187 24.4 14.3 171 Grassy Lake 7265 27.5 21.7 127 38.8 25.1 155 Gros Ventre Summit 8750 13.0 8.7 149 16.8 8.6 195 Gunsight Pass 9820 14.2 8.7 163 17.5 9.4 186 Lewis Lake Divide 7850 25.2 21.2 119 34.6 24.2 143 Phillips Bench 8200 23.9 16.5 145 31.3 19.1 164 Salt River Summit 7760 15.3 8.3 184 20.7 11.2 185 Snake River Station 6920 16.8 11.9 141 25.8 16.2 159 Spring Creek Divide 9000 25.3 15.4 164 27.6 16.1 171 Thumb Divide 7980 14.3 9.8 146 18.9 12.7 149 Togwotee Pass 9580 22.5 15.6 144 26.4 16.6 159 Two Ocean Plateau 9240 30.1 18.7 161 27.3 18.2 150 Willow Creek 8380 23.6 18.1 130 34.6 22.5 154 Younts Peak 8350 17.2 10.1 170 20.5 10.9 188 ----- ----- Basin Index (%) 147 160 MADISON-GALLATIN Black Bear 8170 27.2 24.7 110 35.7 26.0 137 Canyon 7870 12.5 8.6 145 18.6 11.3 165 Madison Plateau 7750 17.2 14.8 116 25.6 18.1 141 West Yellowstone 6700 9.5 7.2 132 17.0 10.2 167 Whiskey Creek 6800 11.1 9.9 112 18.6 13.9 134 ----- ----- Basin Index (%) 119 145 YELLOWSTONE Beartooth Lake 9360 20.2 14.5 139 16.3 13.4 122 Burnt Mtn 5880 5.8 2.7 215 10.0 8.3 120 Canyon 7870 12.5 8.6 145 18.6 11.3 165 Cole Creek 7850 7.3 8.7 84 5.9 7.9 75 Evening Star 9200 24.1 16.7 144 29.1 18.8 155 Fisher Creek 9100 24.6 21.6 114 29.1 21.8 133 Northeast Entrance 7350 8.5 6.7 127 13.6 8.6 158 Parker Peak 9400 21.2 13.5 157 22.7 11.9 191 Sylvan Lake 8420 16.4 13.5 121 27.3 15.5 176 Thumb Divide 7980 14.3 9.8 146 18.9 12.7 149 Two Ocean Plateau 9240 30.1 18.7 161 27.3 18.2 150 White Mill 8700 19.7 15.3 129 22.4 16.2 138 Wolverine 7650 -M 7.3 * -M 8.5 * ----- ----- Basin Index (%) 136 147 WIND RIVER Burroughs Creek 8750 16.0 -M * 18.3 -M * Castle Creek 8400 9.4 -M * 11.6 -M * Cold Springs 9630 8.6 4.8 179 10.7 6.5 165 Deer Park 9700 21.5 9.5 226 24.0 13.0 185 Hobbs Park 10100 15.0 8.0 188 14.2 8.1 175 Kirwin 9550 12.6 6.1 207 15.4 7.5 205 Little Warm 9370 10.2 6.6 155 15.5 8.5 182 Owl Creek 8975 5.6 3.1 181 7.1 3.7 192 South Pass 9040 20.1 9.7 207 18.8 11.5 163 St. Lawrence Alt 8620 4.8 4.2 114 8.9 5.6 159 Togwotee Pass 9580 22.5 15.6 144 26.4 16.6 159 Townsend Creek 8700 8.2 5.6 146 10.7 7.4 145 ----- ----- Basin Index (%) 176 172 BIGHORN BASIN Bald Mtn. 9380 13.6 11.3 120 12.1 11.1 109 Bear Trap Meadow 8200 3.6 3.6 100 5.1 5.3 96 Bone Springs Div 9350 11.2 10.0 112 11.1 10.0 111 Grave Springs 8550 4.2 5.1 82 5.1 6.8 75 Kirwin 9550 12.6 6.1 207 15.4 7.5 205 Marquette 8760 6.0 -M * 9.5 -M * Middle Powder 7760 5.1 6.7 76 5.6 7.7 73 Owl Creek 8975 5.6 3.1 181 7.1 3.7 192 Powder River Pass 9480 4.8 6.9 70 7.4 8.2 90 Shell Creek 9580 11.3 9.5 119 9.0 9.2 98 Timber Creek 7950 4.4 3.1 142 5.7 4.6 124 ----- ----- Basin Index (%) 117 113 SHOSHONE RIVER Blackwater 9780 24.6 15.0 164 28.1 13.8 204 Evening Star 9200 24.1 16.7 144 29.1 18.8 155 Marquette 8760 6.0 -M * 9.5 -M * Sylvan Road 7120 12.4 8.0 155 22.5 12.4 181 Younts Peak 8350 17.2 10.1 170 20.5 10.9 188 ----- ----- Basin Index (%) 157 179 POWDER RIVER Bear Trap Meadow 8200 3.6 3.6 100 5.1 5.3 96 Cloud Peak Reservoir 9860 8.4 8.8 95 9.8 8.2 120 Grave Springs 8550 4.2 5.1 82 5.1 6.8 75 Hansen Sawmill 8360 5.8 4.1 141 7.6 5.3 143 Middle Powder 7760 5.1 6.7 76 5.6 7.7 73 Powder River Pass 9480 4.8 6.9 70 7.4 8.2 90 Soldier Park 8720 9.0 -M * 7.6 -M * ----- ----- Basin Index (%) 91 98 TONGUE RIVER Big Goose 7990 6.2 5.1 122 7.0 6.8 103 Bone Springs Div 9350 11.2 10.0 112 11.1 10.0 111 Burgess Junction 7880 6.8 7.0 97 8.0 7.8 103 Dome Lake 8880 7.6 7.2 106 9.0 8.7 103 Little Goose 8870 6.7 -M * 8.8 -M * Sucker Creek 8880 7.6 7.4 103 7.8 9.1 86 Tie Creek 6870 4.6 3.6 128 7.8 7.4 105 ----- ----- Basin Index (%) 109 102 BELLE FOURCHE Cole Canyon 5910 3.6 3.7 97 4.7 6.1 77 ----- ----- Basin Index (%) 97 77 CHEYENNE RIVER BASIN Blind Park 6890 4.7 5.2 90 5.8 8.1 72 North Rapid Creek 6130 4.7 4.7 100 5.1 6.5 78 ----- ----- Basin Index (%) 95 75 UPPER N. PLATTE Arapaho Ridge 10960 20.7 13.9 149 20.8 15.0 139 Blackhall Mtn 9820 27.8 -M * 28.4 -M * Columbine 9160 20.7 15.6 133 22.8 17.1 133 Divide Peak 8880 13.9 13.3 105 16.3 14.4 113 Joe Wright 10120 15.8 13.4 118 21.2 16.8 126 Laprele Creek 8375 8.5 5.8 147 7.6 7.9 96 Med Bow 10500 27.9 -M * 26.1 -M * North French Creek 10130 17.9 16.9 106 19.4 17.5 111 Never Summer 10280 17.5 13.1 134 14.6 -M * Old Battle 10000 27.3 20.4 134 28.9 23.5 123 Rawah 9020 10.4 6.7 155 13.2 9.4 140 Sage Creek Basin 7850 11.4 8.9 128 11.9 10.3 116 Sand Lake 10050 20.8 17.3 120 19.6 15.8 124 South Brush Creek 8440 7.7 7.6 101 9.0 9.9 91 Tower 10500 33.4 29.5 113 35.4 26.7 133 Webber Springs 9250 22.1 15.0 147 25.8 17.8 145 Willow Creek Pass 9540 -M 8.0 * -M 8.6 * Zirkel 9340 32.3 19.4 166 33.2 20.1 165 ----- ----- Basin Index (%) 129 128 SWEETWATER Deer Park 9700 21.5 9.5 226 24.0 13.0 185 Larsen Creek 9000 15.1 7.9 191 17.7 -M * South Pass 9040 20.1 9.7 207 18.8 11.5 163 ----- ----- Basin Index (%) 209 175 LOWER N. PLATTE Casper Mtn. 7900 7.4 8.0 92 7.2 9.4 77 Laprele Creek 8375 8.5 5.8 147 7.6 7.9 96 Reno Hill 8400 8.2 8.2 100 8.5 9.4 90 Windy Peak 7900 6.8 4.4 155 7.0 6.6 106 ----- ----- Basin Index (%) 117 91 LARAMIE RIVER Brooklyn Lake 10240 18.0 12.4 145 16.2 13.5 120 Cinnabar Park 9574 14.3 13.8 104 17.0 16.9 101 Crow Creek 8330 4.1 5.7 72 6.1 6.6 92 Deadman Hill 10220 15.7 10.6 148 15.2 10.7 142 Rawah 9020 10.4 6.7 155 13.2 9.4 140 Roach 9700 13.5 10.6 127 16.1 12.4 130 ----- ----- Basin Index (%) 127 121 S. PLATTE Black Mountain 8920 7.5 -M * 8.6 -M * Crow Creek 8330 4.1 5.7 72 6.1 6.6 92 Deadman Hill 10220 15.7 10.6 148 15.2 10.7 142 ----- ----- Basin Index (%) 121 123 LITTLE SNAKE RIVER Battle Mountain 7440 8.6 7.5 115 12.0 10.1 119 Divide Peak 8880 13.9 13.3 105 16.3 14.4 113 Elk River 8700 16.1 12.2 132 16.0 13.4 119 Little Snake River 8915 24.4 16.6 147 29.5 21.8 135 Old Battle 10000 27.3 20.4 134 28.9 23.5 123 Sage Creek Basin 7850 11.4 8.9 128 11.9 10.3 116 Sandstone RS 8150 10.8 8.6 126 12.0 12.5 96 Whiskey Park 8950 20.8 17.1 122 23.3 18.8 124 ----- ----- Basin Index (%) 127 120 UPPER GREEN RIVER Big Sandy Opening 9080 15.7 8.6 183 17.9 8.7 206 Blind Bull Sum 8650 28.7 14.9 193 -M 13.5 * East Rim Divide 7930 14.4 7.0 206 16.2 8.1 200 Elkhart Park G.S. 9400 12.9 7.8 165 17.7 8.9 199 Gros Ventre Summit 8750 13.0 8.7 149 16.8 8.6 195 Gunsight Pass 9820 14.2 8.7 163 17.5 9.4 186 Kendall R.S. 7740 17.4 8.1 215 19.1 9.7 197 Loomis Park 8240 19.8 10.0 198 23.1 11.8 196 New Fork Lake 8340 13.3 7.0 190 13.3 7.4 180 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 15.0 8.2 183 19.4 9.7 200 Spring Creek Divide 9000 25.3 15.4 164 27.6 16.1 171 Triple Peak 8500 26.3 14.0 188 -M 16.8 * ----- ----- Basin Index (%) 182 192 LOWER GREEN RIVER Blacks Fork Jct 8870 8.6 -M * 10.7 -M * Buck Pasture 9700 14.4 -M * 16.8 -M * EF Blacks Fork GS 9360 11.3 -M * 11.2 -M * Hams Fork 7840 13.4 7.6 176 14.7 7.6 193 Hewinta 9519 9.0 6.3 143 11.3 9.0 126 Hickerson Park 9145 6.2 4.1 151 6.5 6.4 102 Hole-in-Rock 9150 5.2 4.2 124 7.1 6.0 118 Indian Creek 9425 25.5 15.2 168 -M 14.8 * Kelley R.S. 8180 17.6 9.5 185 22.7 12.1 188 Spirit Lk 10235 10.0 -M * 11.6 -M * Steel Creek Park 10200 12.1 9.2 132 13.9 10.4 134 ----- ----- Basin Index (%) 159 148 UPPER BEAR RIVER Bear River RS 8777 10.5 -M * 12.4 -M * Bug Lake 7950 24.4 12.0 203 23.1 13.0 178 Burts Miller Ranch 8000 5.8 -M * 6.6 -M * Chalk Creek #1 8993 23.9 14.1 170 25.4 16.4 155 Hayden Fork 9212 16.7 9.2 182 21.5 13.8 156 Kelley R.S. 8180 17.6 9.5 185 22.7 12.1 188 Lily Lake 9156 11.8 7.7 153 14.1 11.2 126 Monte Cristo 8960 24.7 16.8 147 25.6 17.1 150 Salt River Summit 7760 15.3 8.3 184 20.7 11.2 185 ----- ----- Basin Index (%) 173 161 ----------------------------------------------------------------------------- -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.