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: FEBRUARY 9 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 20.0 11.4 175 26.8 14.8 181 Black Bear 8170 27.5 25.2 109 36.1 26.2 138 Blind Bull Sum 8650 29.2 15.0 195 -M 13.6 * Cottonwood Creek 7670 19.7 13.7 144 26.1 16.7 156 East Rim Divide 7930 14.5 7.0 207 16.4 8.1 202 Grand Targhee 9260 30.9 24.8 125 29.1 21.8 133 Granite Creek 6770 21.6 11.5 188 24.4 14.3 171 Grassy Lake 7265 28.0 21.9 128 39.1 25.3 155 Gros Ventre Summit 8750 13.3 8.7 153 16.9 8.6 197 Gunsight Pass 9820 14.5 8.7 167 17.7 9.5 186 Lewis Lake Divide 7850 25.7 21.5 120 34.7 24.5 142 Phillips Bench 8200 24.4 16.7 146 31.4 19.3 163 Salt River Summit 7760 15.7 8.4 187 20.9 11.3 185 Snake River Station 6920 17.1 12.0 142 26.0 16.3 160 Spring Creek Divide 9000 26.0 15.6 167 28.2 16.3 173 Thumb Divide 7980 14.6 9.9 147 19.1 12.7 150 Togwotee Pass 9580 23.2 15.6 149 27.0 16.7 162 Two Ocean Plateau 9240 -M 18.8 * -M 18.3 * Willow Creek 8380 23.9 18.1 132 34.8 22.7 153 Younts Peak 8350 18.0 10.2 176 21.1 11.0 192 ----- ----- Basin Index (%) 148 161 MADISON-GALLATIN Black Bear 8170 27.5 25.2 109 36.1 26.2 138 Canyon 7870 12.8 8.7 147 19.1 11.3 169 Madison Plateau 7750 17.4 14.9 117 25.8 18.2 142 West Yellowstone 6700 9.7 7.2 135 17.1 10.2 168 Whiskey Creek 6800 11.3 9.9 114 18.7 14.0 134 ----- ----- Basin Index (%) 119 146 YELLOWSTONE Beartooth Lake 9360 21.1 14.7 144 17.1 13.5 127 Burnt Mtn 5880 5.8 2.8 207 10.1 8.3 122 Canyon 7870 12.8 8.7 147 19.1 11.3 169 Cole Creek 7850 7.4 8.8 84 5.7 8.0 71 Evening Star 9200 25.0 16.7 150 29.2 19.0 154 Fisher Creek 9100 25.4 21.8 117 29.8 21.9 136 Northeast Entrance 7350 8.9 6.8 131 14.0 8.7 161 Parker Peak 9400 21.8 13.6 160 22.8 12.0 190 Sylvan Lake 8420 16.9 13.5 125 27.8 15.6 178 Thumb Divide 7980 14.6 9.9 147 19.1 12.7 150 Two Ocean Plateau 9240 -M 18.8 * -M 18.3 * White Mill 8700 20.6 15.4 134 23.2 16.3 142 Wolverine 7650 -M 7.3 * -M 8.6 * ----- ----- Basin Index (%) 136 148 WIND RIVER Burroughs Creek 8750 16.7 -M * 19.0 -M * Castle Creek 8400 9.8 -M * 12.0 -M * Cold Springs 9630 8.9 4.8 185 11.1 6.5 171 Deer Park 9700 21.6 9.5 227 25.1 13.1 192 Hobbs Park 10100 15.3 8.1 189 14.5 8.2 177 Kirwin 9550 13.1 6.1 215 16.0 7.6 211 Little Warm 9370 10.4 6.7 155 15.8 8.6 184 Owl Creek 8975 5.7 3.2 178 7.2 3.7 195 South Pass 9040 20.2 9.8 206 18.9 11.5 164 St. Lawrence Alt 8620 4.8 4.3 112 8.9 5.6 159 Togwotee Pass 9580 23.2 15.6 149 27.0 16.7 162 Townsend Creek 8700 8.2 5.6 146 10.9 7.5 145 ----- ----- Basin Index (%) 178 175 BIGHORN BASIN Bald Mtn. 9380 13.9 11.5 121 12.1 11.2 108 Bear Trap Meadow 8200 3.8 3.6 106 5.1 5.3 96 Bone Springs Div 9350 11.7 10.1 116 11.5 10.1 114 Grave Springs 8550 4.2 5.2 81 4.9 6.8 72 Kirwin 9550 13.1 6.1 215 16.0 7.6 211 Marquette 8760 6.3 -M * 10.0 -M * Middle Powder 7760 5.2 6.7 78 5.4 7.7 70 Owl Creek 8975 5.7 3.2 178 7.2 3.7 195 Powder River Pass 9480 4.8 6.9 70 7.6 8.2 93 Shell Creek 9580 11.5 9.6 120 8.8 9.3 95 Timber Creek 7950 4.5 3.1 145 5.7 4.7 121 ----- ----- Basin Index (%) 119 113 SHOSHONE RIVER Blackwater 9780 25.4 15.1 168 28.8 13.9 207 Evening Star 9200 25.0 16.7 150 29.2 19.0 154 Marquette 8760 6.3 -M * 10.0 -M * Sylvan Road 7120 12.8 8.1 158 23.0 12.4 185 Younts Peak 8350 18.0 10.2 176 21.1 11.0 192 ----- ----- Basin Index (%) 162 181 POWDER RIVER Bear Trap Meadow 8200 3.8 3.6 106 5.1 5.3 96 Cloud Peak Reservoir 9860 8.6 8.9 97 10.1 8.3 122 Grave Springs 8550 4.2 5.2 81 4.9 6.8 72 Hansen Sawmill 8360 6.0 4.1 146 7.8 5.3 147 Middle Powder 7760 5.2 6.7 78 5.4 7.7 70 Powder River Pass 9480 4.8 6.9 70 7.6 8.2 93 Soldier Park 8720 9.4 -M * 7.8 -M * ----- ----- Basin Index (%) 92 98 TONGUE RIVER Big Goose 7990 6.4 5.2 123 7.3 6.8 107 Bone Springs Div 9350 11.7 10.1 116 11.5 10.1 114 Burgess Junction 7880 6.9 7.1 97 7.8 7.8 100 Dome Lake 8880 7.9 7.3 108 9.3 8.7 107 Little Goose 8870 6.9 -M * 9.1 -M * Sucker Creek 8880 7.8 7.5 104 7.8 9.1 86 Tie Creek 6870 4.7 3.6 131 8.0 7.4 108 ----- ----- Basin Index (%) 111 104 BELLE FOURCHE Cole Canyon 5910 3.6 3.8 95 4.7 6.1 77 ----- ----- Basin Index (%) 95 77 CHEYENNE RIVER BASIN Blind Park 6890 4.7 5.3 89 5.8 8.1 72 North Rapid Creek 6130 4.7 4.8 98 5.1 6.6 77 ----- ----- Basin Index (%) 93 74 UPPER N. PLATTE Arapaho Ridge 10960 20.8 14.0 149 21.3 15.1 141 Blackhall Mtn 9820 27.9 -M * 28.7 -M * Columbine 9160 20.8 15.8 132 22.8 17.3 132 Divide Peak 8880 13.9 13.4 104 16.4 14.5 113 Joe Wright 10120 15.5 13.4 116 21.8 16.8 130 Laprele Creek 8375 8.4 5.8 145 7.7 7.9 97 Med Bow 10500 28.0 -M * 26.2 -M * North French Creek 10130 17.9 17.1 105 19.4 17.7 110 Never Summer 10280 17.7 13.2 134 14.7 -M * Old Battle 10000 27.4 20.6 133 28.9 23.7 122 Rawah 9020 10.4 6.8 153 13.2 9.5 139 Sage Creek Basin 7850 11.5 9.0 128 11.9 10.4 114 Sand Lake 10050 20.9 17.4 120 19.8 15.9 125 South Brush Creek 8440 7.6 7.6 100 9.0 10.0 90 Tower 10500 33.6 29.9 112 36.1 26.9 134 Webber Springs 9250 22.1 15.2 145 25.8 17.9 144 Willow Creek Pass 9540 -M 8.1 * -M 8.7 * Zirkel 9340 32.4 19.5 166 33.5 20.2 166 ----- ----- Basin Index (%) 128 129 SWEETWATER Deer Park 9700 21.6 9.5 227 25.1 13.1 192 Larsen Creek 9000 15.3 7.9 194 17.9 -M * South Pass 9040 20.2 9.8 206 18.9 11.5 164 ----- ----- Basin Index (%) 210 179 LOWER N. PLATTE Casper Mtn. 7900 7.4 8.1 91 7.2 9.5 76 Laprele Creek 8375 8.4 5.8 145 7.7 7.9 97 Reno Hill 8400 8.2 8.2 100 8.6 9.4 91 Windy Peak 7900 6.8 4.4 155 7.1 6.6 108 ----- ----- Basin Index (%) 116 92 LARAMIE RIVER Brooklyn Lake 10240 18.2 12.6 144 16.4 13.6 121 Cinnabar Park 9574 14.3 13.9 103 17.1 16.9 101 Crow Creek 8330 4.2 5.8 72 6.1 6.7 91 Deadman Hill 10220 15.7 10.7 147 15.2 10.8 141 Rawah 9020 10.4 6.8 153 13.2 9.5 139 Roach 9700 13.6 10.6 128 16.1 12.5 129 ----- ----- Basin Index (%) 126 120 S. PLATTE Black Mountain 8920 7.5 -M * 8.6 -M * Crow Creek 8330 4.2 5.8 72 6.1 6.7 91 Deadman Hill 10220 15.7 10.7 147 15.2 10.8 141 ----- ----- Basin Index (%) 121 122 LITTLE SNAKE RIVER Battle Mountain 7440 8.6 7.6 113 12.0 10.2 118 Divide Peak 8880 13.9 13.4 104 16.4 14.5 113 Elk River 8700 16.1 12.4 130 16.0 13.5 119 Little Snake River 8915 24.4 16.8 145 30.0 21.9 137 Old Battle 10000 27.4 20.6 133 28.9 23.7 122 Sage Creek Basin 7850 11.5 9.0 128 11.9 10.4 114 Sandstone RS 8150 10.8 8.8 123 12.0 12.7 94 Whiskey Park 8950 21.0 17.2 122 23.3 18.9 123 ----- ----- Basin Index (%) 126 120 UPPER GREEN RIVER Big Sandy Opening 9080 15.9 8.6 185 18.0 8.8 205 Blind Bull Sum 8650 29.2 15.0 195 -M 13.6 * East Rim Divide 7930 14.5 7.0 207 16.4 8.1 202 Elkhart Park G.S. 9400 13.2 7.9 167 17.8 8.9 200 Gros Ventre Summit 8750 13.3 8.7 153 16.9 8.6 197 Gunsight Pass 9820 14.5 8.7 167 17.7 9.5 186 Kendall R.S. 7740 17.7 8.2 216 19.1 9.8 195 Loomis Park 8240 20.1 10.1 199 23.2 11.9 195 New Fork Lake 8340 13.5 7.0 193 13.5 7.5 180 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 15.3 8.3 184 19.8 9.8 202 Spring Creek Divide 9000 26.0 15.6 167 28.2 16.3 173 Triple Peak 8500 26.7 14.2 188 25.7 16.9 152 ----- ----- Basin Index (%) 184 186 LOWER GREEN RIVER Blacks Fork Jct 8870 8.6 -M * 11.0 -M * Buck Pasture 9700 14.4 -M * 17.0 -M * EF Blacks Fork GS 9360 11.9 -M * -M -M * Hams Fork 7840 13.8 7.7 179 15.1 7.7 196 Hewinta 9519 8.9 6.3 141 11.4 9.1 125 Hickerson Park 9145 6.2 4.2 148 6.5 6.5 100 Hole-in-Rock 9150 5.2 4.3 121 7.1 6.0 118 Indian Creek 9425 26.1 15.4 169 -M 14.9 * Kelley R.S. 8180 17.8 9.5 187 23.1 12.2 189 Spirit Lk 10235 10.1 -M * 11.8 -M * Steel Creek Park 10200 12.1 9.4 129 13.9 10.5 132 ----- ----- Basin Index (%) 159 148 UPPER BEAR RIVER Bear River RS 8777 10.5 -M * 12.4 -M * Bug Lake 7950 25.2 12.1 208 23.2 13.1 177 Burts Miller Ranch 8000 5.7 -M * 6.3 -M * Chalk Creek #1 8993 24.0 14.3 168 25.4 16.6 153 Hayden Fork 9212 16.8 9.3 181 -M 13.9 * Kelley R.S. 8180 17.8 9.5 187 23.1 12.2 189 Lily Lake 9156 11.9 7.8 153 13.9 11.3 123 Monte Cristo 8960 24.8 17.0 146 -M 17.3 * Salt River Summit 7760 15.7 8.4 187 20.9 11.3 185 ----- ----- Basin Index (%) 174 165 ----------------------------------------------------------------------------- -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.