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: FEBRUARY 11 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 21.6 11.7 185 29.2 15.0 195 Black Bear 8170 -M 26.0 * 37.9 26.6 142 Blind Bull Sum 8650 33.3 15.3 218 -M 13.8 * Cottonwood Creek 7670 21.0 13.9 151 27.7 17.0 163 East Rim Divide 7930 15.5 7.1 218 17.2 8.2 210 Grand Targhee 9260 32.7 25.2 130 30.5 22.2 137 Granite Creek 6770 23.7 11.7 203 26.0 14.6 178 Grassy Lake 7265 29.8 22.5 132 41.4 25.7 161 Gros Ventre Summit 8750 14.0 8.8 159 18.2 8.8 207 Gunsight Pass 9820 15.6 8.8 177 18.6 9.6 194 Lewis Lake Divide 7850 28.9 22.1 131 39.8 24.9 160 Phillips Bench 8200 25.5 17.1 149 35.2 19.6 180 Salt River Summit 7760 17.0 8.6 198 21.8 11.5 190 Snake River Station 6920 17.5 12.4 141 28.3 16.6 170 Spring Creek Divide 9000 28.9 15.9 182 29.4 16.6 177 Thumb Divide 7980 17.0 10.1 168 20.6 12.9 160 Togwotee Pass 9580 24.7 15.9 155 28.5 17.0 168 Two Ocean Plateau 9240 -M 19.0 * -M 18.6 * Willow Creek 8380 26.9 18.3 147 36.1 23.1 156 Younts Peak 8350 19.6 10.3 190 23.3 11.2 208 ----- ----- Basin Index (%) 162 169 MADISON-GALLATIN Black Bear 8170 -M 26.0 * 37.9 26.6 142 Canyon 7870 13.6 8.8 155 20.1 11.6 173 Madison Plateau 7750 19.2 15.2 126 27.2 18.5 147 West Yellowstone 6700 9.9 7.4 134 18.1 10.4 174 Whiskey Creek 6800 11.9 10.1 118 20.0 14.1 142 ----- ----- Basin Index (%) 132 152 YELLOWSTONE Beartooth Lake 9360 23.5 14.9 158 19.5 13.8 141 Burnt Mtn 5880 5.0 3.0 167 10.1 8.4 120 Canyon 7870 13.6 8.8 155 20.1 11.6 173 Cole Creek 7850 7.4 8.8 84 5.7 8.1 70 Evening Star 9200 27.5 16.8 164 29.5 19.4 152 Fisher Creek 9100 29.2 22.1 132 33.4 22.3 150 Northeast Entrance 7350 9.4 7.0 134 15.1 8.9 170 Parker Peak 9400 23.8 13.7 174 22.9 12.2 188 Sylvan Lake 8420 18.0 13.5 133 28.9 15.8 183 Thumb Divide 7980 17.0 10.1 168 20.6 12.9 160 Two Ocean Plateau 9240 -M 19.0 * -M 18.6 * White Mill 8700 22.6 15.7 144 24.5 16.6 148 Wolverine 7650 -M 7.5 * -M 8.7 * ----- ----- Basin Index (%) 147 154 WIND RIVER Burroughs Creek 8750 18.3 -M * 20.4 -M * Castle Creek 8400 10.1 -M * 12.3 -M * Cold Springs 9630 -M 4.9 * 11.4 6.6 173 Deer Park 9700 22.9 9.5 241 26.5 13.4 198 Hobbs Park 10100 16.3 8.2 199 15.4 8.3 186 Kirwin 9550 13.9 6.1 228 17.0 7.7 221 Little Warm 9370 11.3 6.8 166 16.8 8.7 193 Owl Creek 8975 5.7 3.2 178 7.2 3.8 189 South Pass 9040 21.4 9.8 218 19.9 11.7 170 St. Lawrence Alt 8620 5.1 4.3 119 9.5 5.7 167 Togwotee Pass 9580 24.7 15.9 155 28.5 17.0 168 Townsend Creek 8700 8.5 5.7 149 11.4 7.6 150 ----- ----- Basin Index (%) 187 181 BIGHORN BASIN Bald Mtn. 9380 13.9 11.9 117 12.3 11.5 107 Bear Trap Meadow 8200 3.8 3.7 103 5.2 5.4 96 Bone Springs Div 9350 11.7 10.2 115 11.7 10.2 115 Grave Springs 8550 4.2 5.3 79 5.0 7.0 71 Kirwin 9550 13.9 6.1 228 17.0 7.7 221 Marquette 8760 6.2 -M * 9.8 -M * Middle Powder 7760 5.1 6.8 75 5.5 7.9 70 Owl Creek 8975 5.7 3.2 178 7.2 3.8 189 Powder River Pass 9480 4.8 6.9 70 7.8 8.4 93 Shell Creek 9580 11.6 9.7 120 9.0 9.4 96 Timber Creek 7950 4.4 3.1 142 5.8 4.8 121 ----- ----- Basin Index (%) 118 114 SHOSHONE RIVER Blackwater 9780 27.3 15.2 180 29.2 14.1 207 Evening Star 9200 27.5 16.8 164 29.5 19.4 152 Marquette 8760 6.2 -M * 9.8 -M * Sylvan Road 7120 13.3 8.3 160 24.4 12.6 194 Younts Peak 8350 19.6 10.3 190 23.3 11.2 208 ----- ----- Basin Index (%) 173 186 POWDER RIVER Bear Trap Meadow 8200 3.8 3.7 103 5.2 5.4 96 Cloud Peak Reservoir 9860 8.8 9.1 97 10.3 8.4 123 Grave Springs 8550 4.2 5.3 79 5.0 7.0 71 Hansen Sawmill 8360 6.1 4.2 145 7.9 5.4 146 Middle Powder 7760 5.1 6.8 75 5.5 7.9 70 Powder River Pass 9480 4.8 6.9 70 7.8 8.4 93 Soldier Park 8720 9.4 -M * 7.8 -M * ----- ----- Basin Index (%) 91 98 TONGUE RIVER Big Goose 7990 6.4 5.4 119 7.3 7.0 104 Bone Springs Div 9350 11.7 10.2 115 11.7 10.2 115 Burgess Junction 7880 7.0 7.2 97 7.9 8.0 99 Dome Lake 8880 8.1 7.4 109 9.4 8.9 106 Little Goose 8870 7.0 -M * 9.2 -M * Sucker Creek 8880 7.8 7.6 103 8.0 9.3 86 Tie Creek 6870 4.5 3.7 122 8.0 7.5 107 ----- ----- Basin Index (%) 110 103 BELLE FOURCHE Cole Canyon 5910 3.5 4.1 85 4.7 6.3 75 ----- ----- Basin Index (%) 85 75 CHEYENNE RIVER BASIN Blind Park 6890 4.6 5.4 85 5.9 8.3 71 North Rapid Creek 6130 4.7 5.0 94 5.2 6.8 76 ----- ----- Basin Index (%) 89 74 UPPER N. PLATTE Arapaho Ridge 10960 21.0 14.2 148 21.5 15.2 141 Blackhall Mtn 9820 29.0 -M * 29.4 -M * Columbine 9160 21.1 16.3 129 23.1 17.7 131 Divide Peak 8880 14.7 13.6 108 17.0 14.7 116 Joe Wright 10120 15.6 13.6 115 22.4 17.2 130 Laprele Creek 8375 8.7 6.0 145 7.9 8.1 98 Med Bow 10500 29.0 -M * 27.1 -M * North French Creek 10130 18.5 17.6 105 19.9 18.1 110 Never Summer 10280 17.9 13.3 135 14.8 -M * Old Battle 10000 28.7 21.0 137 29.7 24.1 123 Rawah 9020 10.2 7.0 146 13.3 9.5 140 Sage Creek Basin 7850 12.0 9.1 132 12.4 10.5 118 Sand Lake 10050 21.8 17.7 123 20.3 16.2 125 South Brush Creek 8440 7.9 7.7 103 9.3 10.1 92 Tower 10500 34.6 30.7 113 36.7 27.5 133 Webber Springs 9250 23.3 15.6 149 26.9 18.2 148 Willow Creek Pass 9540 14.4 8.1 178 15.4 8.9 173 Zirkel 9340 33.7 19.7 171 34.9 20.4 171 ----- ----- Basin Index (%) 132 131 SWEETWATER Deer Park 9700 22.9 9.5 241 26.5 13.4 198 Larsen Creek 9000 16.2 8.1 200 18.7 -M * South Pass 9040 21.4 9.8 218 19.9 11.7 170 ----- ----- Basin Index (%) 221 185 LOWER N. PLATTE Casper Mtn. 7900 7.6 8.2 93 7.3 9.7 75 Laprele Creek 8375 8.7 6.0 145 7.9 8.1 98 Reno Hill 8400 8.3 8.3 100 8.8 9.6 92 Windy Peak 7900 7.0 4.6 152 7.2 6.8 106 ----- ----- Basin Index (%) 117 91 LARAMIE RIVER Brooklyn Lake 10240 19.1 12.9 148 17.1 13.8 124 Cinnabar Park 9574 14.7 14.4 102 17.4 17.1 102 Crow Creek 8330 3.9 5.8 67 6.1 6.7 91 Deadman Hill 10220 15.9 10.9 146 15.4 11.0 140 Rawah 9020 10.2 7.0 146 13.3 9.5 140 Roach 9700 13.8 10.8 128 16.3 12.7 128 ----- ----- Basin Index (%) 126 121 S. PLATTE Black Mountain 8920 7.4 -M * 8.6 -M * Crow Creek 8330 3.9 5.8 67 6.1 6.7 91 Deadman Hill 10220 15.9 10.9 146 15.4 11.0 140 ----- ----- Basin Index (%) 119 121 LITTLE SNAKE RIVER Battle Mountain 7440 8.2 7.8 105 12.2 10.4 117 Divide Peak 8880 14.7 13.6 108 17.0 14.7 116 Elk River 8700 15.8 12.7 124 16.1 13.8 117 Little Snake River 8915 25.3 17.2 147 31.0 22.2 140 Old Battle 10000 28.7 21.0 137 29.7 24.1 123 Sage Creek Basin 7850 12.0 9.1 132 12.4 10.5 118 Sandstone RS 8150 10.8 9.1 119 12.1 12.9 94 Whiskey Park 8950 21.9 17.6 124 23.6 19.3 122 ----- ----- Basin Index (%) 127 120 UPPER GREEN RIVER Big Sandy Opening 9080 17.2 8.7 198 19.1 8.9 215 Blind Bull Sum 8650 33.3 15.3 218 -M 13.8 * East Rim Divide 7930 15.5 7.1 218 17.2 8.2 210 Elkhart Park G.S. 9400 14.1 8.0 176 18.7 9.1 205 Gros Ventre Summit 8750 14.0 8.8 159 18.2 8.8 207 Gunsight Pass 9820 15.6 8.8 177 18.6 9.6 194 Kendall R.S. 7740 18.4 8.4 219 -M 9.9 * Loomis Park 8240 21.8 10.3 212 25.6 12.1 212 New Fork Lake 8340 14.0 7.2 194 14.0 7.6 184 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 16.1 8.5 189 21.3 9.9 215 Spring Creek Divide 9000 28.9 15.9 182 29.4 16.6 177 Triple Peak 8500 30.8 14.7 210 31.0 17.2 180 ----- ----- Basin Index (%) 197 197 LOWER GREEN RIVER Blacks Fork Jct 8870 8.4 -M * 11.0 -M * Buck Pasture 9700 14.6 -M * 17.1 -M * EF Blacks Fork GS 9360 12.0 -M * -M -M * Hams Fork 7840 14.1 7.9 178 15.9 7.8 204 Hewinta 9519 8.6 6.5 132 11.3 9.3 122 Hickerson Park 9145 6.1 4.4 139 6.5 6.6 98 Hole-in-Rock 9150 5.1 4.4 116 7.1 6.2 115 Indian Creek 9425 28.6 15.8 181 -M 15.2 * Kelley R.S. 8180 19.1 9.7 197 24.0 12.4 194 Spirit Lk 10235 10.2 -M * 11.8 -M * Steel Creek Park 10200 12.2 9.6 127 13.9 10.7 130 ----- ----- Basin Index (%) 161 148 UPPER BEAR RIVER Bear River RS 8777 10.1 -M * 12.6 -M * Bug Lake 7950 26.0 12.4 210 24.1 13.3 181 Burts Miller Ranch 8000 5.2 -M * 6.4 -M * Chalk Creek #1 8993 25.1 14.9 168 25.6 16.8 152 Hayden Fork 9212 17.0 9.7 175 -M 14.1 * Kelley R.S. 8180 19.1 9.7 197 24.0 12.4 194 Lily Lake 9156 12.0 8.2 146 14.0 11.5 122 Monte Cristo 8960 26.0 17.6 148 -M 17.5 * Salt River Summit 7760 17.0 8.6 198 21.8 11.5 190 ----- ----- Basin Index (%) 175 167 ----------------------------------------------------------------------------- -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.