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: FEBRUARY 14 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 21.7 12.4 175 29.3 15.3 192 Black Bear 8170 29.4 26.9 109 38.8 27.3 142 Blind Bull Sum 8650 32.5 15.7 207 -M 14.2 * Cottonwood Creek 7670 21.2 14.5 146 28.1 17.5 161 East Rim Divide 7930 15.3 7.2 212 17.2 8.4 205 Grand Targhee 9260 32.7 26.0 126 30.9 22.9 135 Granite Creek 6770 23.0 12.1 190 26.2 14.8 177 Grassy Lake 7265 29.2 23.5 124 41.4 26.4 157 Gros Ventre Summit 8750 13.8 8.9 155 18.3 8.9 206 Gunsight Pass 9820 15.6 9.2 170 18.5 9.8 189 Lewis Lake Divide 7850 29.0 22.8 127 39.5 25.6 154 Phillips Bench 8200 26.0 17.6 148 35.3 20.1 176 Salt River Summit 7760 16.9 9.0 188 22.4 11.8 190 Snake River Station 6920 17.5 12.9 136 28.7 16.9 170 Spring Creek Divide 9000 28.7 16.2 177 29.5 17.1 173 Thumb Divide 7980 16.9 10.4 162 21.0 13.2 159 Togwotee Pass 9580 24.6 16.3 151 28.6 17.4 164 Two Ocean Plateau 9240 -M 19.3 * -M 19.3 * Willow Creek 8380 26.7 19.0 141 36.3 23.8 153 Younts Peak 8350 19.4 10.6 183 23.3 11.4 204 ----- ----- Basin Index (%) 151 166 MADISON-GALLATIN Black Bear 8170 29.4 26.9 109 38.8 27.3 142 Canyon 7870 13.6 9.2 148 20.2 11.8 171 Madison Plateau 7750 18.8 15.5 121 27.3 18.9 144 West Yellowstone 6700 9.9 7.5 132 18.0 10.6 170 Whiskey Creek 6800 11.7 10.5 111 20.1 14.5 139 ----- ----- Basin Index (%) 120 150 YELLOWSTONE Beartooth Lake 9360 23.6 15.2 155 19.5 14.2 137 Burnt Mtn 5880 4.8 3.3 145 10.2 8.5 120 Canyon 7870 13.6 9.2 148 20.2 11.8 171 Cole Creek 7850 7.5 8.8 85 5.8 8.3 70 Evening Star 9200 27.6 17.3 160 29.7 19.8 150 Fisher Creek 9100 29.2 22.7 129 33.5 22.8 147 Northeast Entrance 7350 9.3 7.2 129 15.0 9.0 167 Parker Peak 9400 23.8 13.9 171 22.9 12.5 183 Sylvan Lake 8420 18.1 13.9 130 29.1 16.2 180 Thumb Divide 7980 16.9 10.4 162 21.0 13.2 159 Two Ocean Plateau 9240 -M 19.3 * -M 19.3 * White Mill 8700 22.6 16.1 140 24.8 17.0 146 Wolverine 7650 -M 7.8 * -M 9.0 * ----- ----- Basin Index (%) 143 151 WIND RIVER Burroughs Creek 8750 18.4 -M * 20.7 -M * Castle Creek 8400 10.0 -M * 12.3 -M * Cold Springs 9630 9.2 5.0 184 11.6 6.6 176 Deer Park 9700 22.9 9.6 239 26.5 13.6 195 Hobbs Park 10100 16.2 8.4 193 15.5 8.5 182 Kirwin 9550 13.9 6.2 224 17.1 7.9 216 Little Warm 9370 11.2 7.1 158 16.8 8.9 189 Owl Creek 8975 5.6 3.2 175 7.2 3.8 189 South Pass 9040 21.4 10.0 214 20.0 11.9 168 St. Lawrence Alt 8620 5.1 4.5 113 9.4 5.7 165 Togwotee Pass 9580 24.6 16.3 151 28.6 17.4 164 Townsend Creek 8700 8.5 5.8 147 11.6 7.7 151 ----- ----- Basin Index (%) 182 179 BIGHORN BASIN Bald Mtn. 9380 13.9 12.6 110 12.3 11.7 105 Bear Trap Meadow 8200 3.8 3.8 100 5.1 5.5 93 Bone Springs Div 9350 11.7 10.6 110 11.6 10.5 110 Grave Springs 8550 4.2 5.5 76 5.0 7.1 70 Kirwin 9550 13.9 6.2 224 17.1 7.9 216 Marquette 8760 6.1 -M * 9.9 -M * Middle Powder 7760 5.0 7.0 71 5.5 7.9 70 Owl Creek 8975 5.6 3.2 175 7.2 3.8 189 Powder River Pass 9480 4.9 7.1 69 7.8 8.5 92 Shell Creek 9580 11.5 10.0 115 9.0 9.6 94 Timber Creek 7950 4.4 3.1 142 5.8 4.8 121 ----- ----- Basin Index (%) 114 112 SHOSHONE RIVER Blackwater 9780 27.5 15.4 179 30.7 14.4 213 Evening Star 9200 27.6 17.3 160 29.7 19.8 150 Marquette 8760 6.1 -M * 9.9 -M * Sylvan Road 7120 13.2 8.6 153 24.4 12.8 191 Younts Peak 8350 19.4 10.6 183 23.3 11.4 204 ----- ----- Basin Index (%) 169 185 POWDER RIVER Bear Trap Meadow 8200 3.8 3.8 100 5.1 5.5 93 Cloud Peak Reservoir 9860 8.7 9.4 93 10.3 8.6 120 Grave Springs 8550 4.2 5.5 76 5.0 7.1 70 Hansen Sawmill 8360 6.0 4.3 140 7.8 5.4 144 Middle Powder 7760 5.0 7.0 71 5.5 7.9 70 Powder River Pass 9480 4.9 7.1 69 7.8 8.5 92 Soldier Park 8720 9.2 -M * 7.8 -M * ----- ----- Basin Index (%) 88 97 TONGUE RIVER Big Goose 7990 6.4 5.6 114 7.3 7.2 101 Bone Springs Div 9350 11.7 10.6 110 11.6 10.5 110 Burgess Junction 7880 6.9 7.3 95 7.9 8.1 98 Dome Lake 8880 8.1 7.6 107 9.5 9.0 106 Little Goose 8870 6.9 -M * 9.2 -M * Sucker Creek 8880 7.7 7.8 99 7.8 9.5 82 Tie Creek 6870 4.4 3.8 116 7.9 7.6 104 ----- ----- Basin Index (%) 106 100 BELLE FOURCHE Cole Canyon 5910 3.2 4.3 74 4.7 6.5 72 ----- ----- Basin Index (%) 74 72 CHEYENNE RIVER BASIN Blind Park 6890 4.6 5.5 84 5.9 8.4 70 North Rapid Creek 6130 4.4 5.2 85 5.2 6.9 75 ----- ----- Basin Index (%) 84 73 UPPER N. PLATTE Arapaho Ridge 10960 21.4 14.5 148 21.8 15.8 138 Blackhall Mtn 9820 29.9 -M * 29.5 -M * Columbine 9160 21.5 16.9 127 23.1 18.2 127 Divide Peak 8880 15.3 13.9 110 17.8 15.1 118 Joe Wright 10120 15.9 14.1 113 23.0 17.7 130 Laprele Creek 8375 9.1 6.3 144 8.4 8.3 101 Med Bow 10500 29.7 -M * 27.6 -M * North French Creek 10130 19.1 18.6 103 20.4 18.7 109 Never Summer 10280 18.7 13.8 136 15.4 -M * Old Battle 10000 29.7 21.5 138 31.2 24.9 125 Rawah 9020 10.8 7.2 150 13.6 9.7 140 Sage Creek Basin 7850 12.4 9.3 133 12.8 10.8 119 Sand Lake 10050 22.2 18.2 122 21.0 16.7 126 South Brush Creek 8440 8.3 8.0 104 9.2 10.4 88 Tower 10500 35.4 31.7 112 37.1 28.3 131 Webber Springs 9250 23.1 16.2 143 27.5 18.7 147 Willow Creek Pass 9540 15.1 8.4 180 15.9 9.1 175 Zirkel 9340 34.5 20.4 169 35.8 21.0 170 ----- ----- Basin Index (%) 131 131 SWEETWATER Deer Park 9700 22.9 9.6 239 26.5 13.6 195 Larsen Creek 9000 16.1 8.3 194 18.6 -M * South Pass 9040 21.4 10.0 214 20.0 11.9 168 ----- ----- Basin Index (%) 216 182 LOWER N. PLATTE Casper Mtn. 7900 7.6 8.5 89 7.4 9.9 75 Laprele Creek 8375 9.1 6.3 144 8.4 8.3 101 Reno Hill 8400 8.5 8.5 100 9.0 9.9 91 Windy Peak 7900 7.2 4.9 147 7.6 7.0 109 ----- ----- Basin Index (%) 115 92 LARAMIE RIVER Brooklyn Lake 10240 19.3 13.5 143 17.4 14.2 123 Cinnabar Park 9574 15.0 15.3 98 17.7 17.8 99 Crow Creek 8330 3.9 6.1 64 6.1 7.0 87 Deadman Hill 10220 16.3 11.2 146 15.8 11.3 140 Rawah 9020 10.8 7.2 150 13.6 9.7 140 Roach 9700 14.0 11.2 125 16.5 13.0 127 ----- ----- Basin Index (%) 123 119 S. PLATTE Black Mountain 8920 7.6 -M * 8.7 -M * Crow Creek 8330 3.9 6.1 64 6.1 7.0 87 Deadman Hill 10220 16.3 11.2 146 15.8 11.3 140 ----- ----- Basin Index (%) 117 120 LITTLE SNAKE RIVER Battle Mountain 7440 9.0 8.3 108 12.5 10.8 116 Divide Peak 8880 15.3 13.9 110 17.8 15.1 118 Elk River 8700 16.4 13.3 123 16.7 14.2 118 Little Snake River 8915 26.3 17.8 148 32.0 22.8 140 Old Battle 10000 29.7 21.5 138 31.2 24.9 125 Sage Creek Basin 7850 12.4 9.3 133 12.8 10.8 119 Sandstone RS 8150 10.9 9.5 115 12.9 13.4 96 Whiskey Park 8950 21.9 18.5 118 24.0 20.0 120 ----- ----- Basin Index (%) 127 121 UPPER GREEN RIVER Big Sandy Opening 9080 17.0 8.8 193 19.2 9.2 209 Blind Bull Sum 8650 32.5 15.7 207 -M 14.2 * East Rim Divide 7930 15.3 7.2 212 17.2 8.4 205 Elkhart Park G.S. 9400 14.1 8.3 170 19.1 9.3 205 Gros Ventre Summit 8750 13.8 8.9 155 18.3 8.9 206 Gunsight Pass 9820 15.6 9.2 170 18.5 9.8 189 Kendall R.S. 7740 18.4 8.7 211 22.7 10.2 223 Loomis Park 8240 21.6 10.5 206 26.0 12.3 211 New Fork Lake 8340 13.9 7.4 188 14.1 7.7 183 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 15.7 8.8 178 21.5 10.2 211 Spring Creek Divide 9000 28.7 16.2 177 29.5 17.1 173 Triple Peak 8500 30.4 15.3 199 31.2 17.7 176 ----- ----- Basin Index (%) 190 196 LOWER GREEN RIVER Blacks Fork Jct 8869 8.6 -M * 11.4 -M * Buck Pasture 9632 14.8 -M * 17.8 -M * EF Blacks Fork GS 9360 12.3 -M * -M -M * Hams Fork 7840 14.1 8.2 172 16.0 8.1 198 Hewinta 9519 9.5 6.8 140 11.4 9.6 119 Hickerson Park 9145 6.3 4.8 131 6.4 6.8 94 Hole-in-Rock 9150 5.1 4.6 111 7.0 6.3 111 Indian Creek 9425 28.8 16.2 178 -M 15.6 * Kelley R.S. 8180 20.5 10.1 203 24.1 12.8 188 Spirit Lk 10235 10.5 -M * 12.1 -M * Steel Creek Park 10200 12.4 10.0 124 14.4 11.0 131 ----- ----- Basin Index (%) 159 145 UPPER BEAR RIVER Bear River RS 8777 10.8 -M * 13.1 -M * Bug Lake 7950 26.0 12.8 203 24.1 13.7 176 Burts Miller Ranch 8000 5.6 -M * 6.5 -M * Chalk Creek #1 8993 25.6 15.5 165 27.0 17.3 156 Hayden Fork 9212 17.9 10.3 174 -M 14.5 * Kelley R.S. 8180 20.5 10.1 203 24.1 12.8 188 Lily Lake 9156 12.2 8.6 142 14.4 11.8 122 Monte Cristo 8960 26.3 18.2 145 -M 18.0 * Salt River Summit 7760 16.9 9.0 188 22.4 11.8 190 ----- ----- Basin Index (%) 172 166 ----------------------------------------------------------------------------- -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.