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 SUNDAY: FEBRUARY 12 , 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 12.0 180 29.2 15.1 193 Black Bear 8170 28.6 26.4 108 38.8 26.8 145 Blind Bull Sum 8650 32.8 15.4 213 -M 13.9 * Cottonwood Creek 7670 21.1 14.1 150 27.8 17.1 163 East Rim Divide 7930 15.2 7.1 214 17.1 8.2 209 Grand Targhee 9260 32.5 25.4 128 30.4 22.5 135 Granite Creek 6770 23.3 11.8 197 26.1 14.7 178 Grassy Lake 7265 29.4 22.9 128 41.3 25.9 159 Gros Ventre Summit 8750 -M 8.8 * -M 8.8 * Gunsight Pass 9820 15.5 9.0 172 18.4 9.7 190 Lewis Lake Divide 7850 28.8 22.4 129 39.5 25.0 158 Phillips Bench 8200 25.7 17.3 149 35.2 19.7 179 Salt River Summit 7760 16.9 8.8 192 22.1 11.5 192 Snake River Station 6920 17.5 12.5 140 28.5 16.7 171 Spring Creek Divide 9000 28.6 16.0 179 29.3 16.7 175 Thumb Divide 7980 16.8 10.2 165 20.8 13.0 160 Togwotee Pass 9580 24.6 16.0 154 28.4 17.1 166 Two Ocean Plateau 9240 -M 19.1 * -M 18.7 * Willow Creek 8380 26.7 18.5 144 36.1 23.3 155 Younts Peak 8350 19.4 10.3 188 23.0 11.3 204 ----- ----- Basin Index (%) 154 167 MADISON-GALLATIN Black Bear 8170 28.6 26.4 108 38.8 26.8 145 Canyon 7870 13.7 8.9 154 20.2 11.6 174 Madison Plateau 7750 18.9 15.4 123 27.2 18.6 146 West Yellowstone 6700 9.9 7.4 134 18.0 10.4 173 Whiskey Creek 6800 11.7 10.3 114 20.0 14.2 141 ----- ----- Basin Index (%) 121 152 YELLOWSTONE Beartooth Lake 9360 23.5 15.0 157 19.4 13.9 140 Burnt Mtn 5880 5.0 3.1 161 10.1 8.4 120 Canyon 7870 13.7 8.9 154 20.2 11.6 174 Cole Creek 7850 7.5 8.8 85 5.6 8.2 68 Evening Star 9200 27.4 17.0 161 29.5 19.5 151 Fisher Creek 9100 29.2 22.3 131 33.5 22.4 150 Northeast Entrance 7350 9.3 7.1 131 15.0 8.9 169 Parker Peak 9400 23.5 13.8 170 22.7 12.3 185 Sylvan Lake 8420 18.1 13.6 133 29.0 15.9 182 Thumb Divide 7980 16.8 10.2 165 20.8 13.0 160 Two Ocean Plateau 9240 -M 19.1 * -M 18.7 * White Mill 8700 22.5 15.9 142 24.5 16.7 147 Wolverine 7650 -M 7.6 * -M 8.8 * ----- ----- Basin Index (%) 145 153 WIND RIVER Burroughs Creek 8750 18.2 -M * 20.4 -M * Castle Creek 8400 10.0 -M * 11.9 -M * Cold Springs 9630 9.1 4.9 186 11.4 6.6 173 Deer Park 9700 22.9 9.5 241 26.4 13.5 196 Hobbs Park 10100 16.1 8.2 196 15.3 8.3 184 Kirwin 9550 13.8 6.1 226 16.9 7.7 219 Little Warm 9370 11.2 6.9 162 16.8 8.7 193 Owl Creek 8975 5.6 3.2 175 7.1 3.8 187 South Pass 9040 21.4 9.9 216 19.9 11.7 170 St. Lawrence Alt 8620 5.0 4.4 114 9.3 5.7 163 Togwotee Pass 9580 24.6 16.0 154 28.4 17.1 166 Townsend Creek 8700 8.6 5.7 151 11.4 7.6 150 ----- ----- Basin Index (%) 185 180 BIGHORN BASIN Bald Mtn. 9380 13.9 12.1 115 12.0 11.5 104 Bear Trap Meadow 8200 3.7 3.7 100 5.0 5.5 91 Bone Springs Div 9350 11.7 10.4 112 11.4 10.3 111 Grave Springs 8550 4.1 5.3 77 4.8 7.0 69 Kirwin 9550 13.8 6.1 226 16.9 7.7 219 Marquette 8760 6.1 -M * 9.8 -M * Middle Powder 7760 5.0 6.9 72 5.3 7.9 67 Owl Creek 8975 5.6 3.2 175 7.1 3.8 187 Powder River Pass 9480 4.9 7.0 70 7.6 8.4 90 Shell Creek 9580 11.3 9.8 115 8.8 9.5 93 Timber Creek 7950 4.4 3.1 142 5.8 4.8 121 ----- ----- Basin Index (%) 116 111 SHOSHONE RIVER Blackwater 9780 27.4 15.3 179 29.0 14.2 204 Evening Star 9200 27.4 17.0 161 29.5 19.5 151 Marquette 8760 6.1 -M * 9.8 -M * Sylvan Road 7120 13.3 8.4 158 24.4 12.7 192 Younts Peak 8350 19.4 10.3 188 23.0 11.3 204 ----- ----- Basin Index (%) 172 184 POWDER RIVER Bear Trap Meadow 8200 3.7 3.7 100 5.0 5.5 91 Cloud Peak Reservoir 9860 8.7 9.2 95 10.1 8.5 119 Grave Springs 8550 4.1 5.3 77 4.8 7.0 69 Hansen Sawmill 8360 5.9 4.2 140 7.7 5.4 143 Middle Powder 7760 5.0 6.9 72 5.3 7.9 67 Powder River Pass 9480 4.9 7.0 70 7.6 8.4 90 Soldier Park 8720 9.1 -M * 7.6 -M * ----- ----- Basin Index (%) 89 95 TONGUE RIVER Big Goose 7990 6.3 5.5 115 7.3 7.1 103 Bone Springs Div 9350 11.7 10.4 112 11.4 10.3 111 Burgess Junction 7880 6.9 7.2 96 7.8 8.0 98 Dome Lake 8880 8.0 7.5 107 9.3 8.9 104 Little Goose 8870 6.9 -M * 9.0 -M * Sucker Creek 8880 7.7 7.7 100 7.6 9.4 81 Tie Creek 6870 4.3 3.7 116 7.8 7.6 103 ----- ----- Basin Index (%) 107 100 BELLE FOURCHE Cole Canyon 5910 3.4 4.1 83 4.6 6.4 72 ----- ----- Basin Index (%) 83 72 CHEYENNE RIVER BASIN Blind Park 6890 4.5 5.4 83 5.9 8.4 70 North Rapid Creek 6130 4.5 5.1 88 5.0 6.8 74 ----- ----- Basin Index (%) 86 72 UPPER N. PLATTE Arapaho Ridge 10960 21.4 14.3 150 21.9 15.4 142 Blackhall Mtn 9820 29.8 -M * 29.5 -M * Columbine 9160 21.4 16.5 130 23.2 17.8 130 Divide Peak 8880 15.3 13.7 112 17.6 14.8 119 Joe Wright 10120 16.1 13.8 117 23.0 17.4 132 Laprele Creek 8375 9.1 6.1 149 8.4 8.1 104 Med Bow 10500 29.7 -M * 27.6 -M * North French Creek 10130 19.1 18.0 106 20.4 18.2 112 Never Summer 10280 18.7 13.5 139 15.5 -M * Old Battle 10000 29.7 21.2 140 31.3 24.4 128 Rawah 9020 10.8 7.1 152 13.6 9.6 142 Sage Creek Basin 7850 12.1 9.1 133 12.8 10.6 121 Sand Lake 10050 22.3 17.8 125 20.9 16.3 128 South Brush Creek 8440 8.2 7.8 105 9.3 10.2 91 Tower 10500 35.2 31.1 113 37.0 27.7 134 Webber Springs 9250 23.6 15.8 149 27.5 18.3 150 Willow Creek Pass 9540 15.0 8.2 183 15.9 9.0 177 Zirkel 9340 34.2 19.9 172 35.5 20.5 173 ----- ----- Basin Index (%) 133 134 SWEETWATER Deer Park 9700 22.9 9.5 241 26.4 13.5 196 Larsen Creek 9000 16.1 8.2 196 18.6 -M * South Pass 9040 21.4 9.9 216 19.9 11.7 170 ----- ----- Basin Index (%) 219 184 LOWER N. PLATTE Casper Mtn. 7900 7.6 8.2 93 7.3 9.7 75 Laprele Creek 8375 9.1 6.1 149 8.4 8.1 104 Reno Hill 8400 8.5 8.4 101 8.8 9.7 91 Windy Peak 7900 7.2 4.6 157 7.6 6.8 112 ----- ----- Basin Index (%) 119 94 LARAMIE RIVER Brooklyn Lake 10240 19.3 13.1 147 17.4 13.9 125 Cinnabar Park 9574 14.9 14.7 101 17.6 17.3 102 Crow Creek 8330 3.8 5.9 64 6.1 6.8 90 Deadman Hill 10220 16.3 11.0 148 15.8 11.1 142 Rawah 9020 10.8 7.1 152 13.6 9.6 142 Roach 9700 14.0 10.9 128 16.6 12.8 130 ----- ----- Basin Index (%) 126 122 S. PLATTE Black Mountain 8920 7.6 -M * 8.8 -M * Crow Creek 8330 3.8 5.9 64 6.1 6.8 90 Deadman Hill 10220 16.3 11.0 148 15.8 11.1 142 ----- ----- Basin Index (%) 119 122 LITTLE SNAKE RIVER Battle Mountain 7440 8.7 8.0 109 12.5 10.5 119 Divide Peak 8880 15.3 13.7 112 17.6 14.8 119 Elk River 8700 16.3 12.9 126 16.7 13.9 120 Little Snake River 8915 26.3 17.4 151 31.9 22.6 141 Old Battle 10000 29.7 21.2 140 31.3 24.4 128 Sage Creek Basin 7850 12.1 9.1 133 12.8 10.6 121 Sandstone RS 8150 11.1 9.2 121 12.8 13.0 98 Whiskey Park 8950 22.1 17.9 123 24.0 19.6 122 ----- ----- Basin Index (%) 129 123 UPPER GREEN RIVER Big Sandy Opening 9080 17.0 8.7 195 19.0 8.9 213 Blind Bull Sum 8650 32.8 15.4 213 -M 13.9 * East Rim Divide 7930 15.2 7.1 214 17.1 8.2 209 Elkhart Park G.S. 9400 14.0 8.1 173 18.9 9.1 208 Gros Ventre Summit 8750 -M 8.8 * -M 8.8 * Gunsight Pass 9820 15.5 9.0 172 18.4 9.7 190 Kendall R.S. 7740 18.3 8.6 213 22.5 10.0 225 Loomis Park 8240 21.7 10.4 209 25.6 12.2 210 New Fork Lake 8340 14.0 7.3 192 14.0 7.6 184 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 15.7 8.5 185 21.3 10.0 213 Spring Creek Divide 9000 28.6 16.0 179 29.3 16.7 175 Triple Peak 8500 30.7 14.9 206 31.2 17.3 180 ----- ----- Basin Index (%) 196 198 LOWER GREEN RIVER Blacks Fork Jct 8870 8.6 -M * 11.4 -M * Buck Pasture 9700 14.8 -M * 17.6 -M * EF Blacks Fork GS 9360 12.0 -M * 9.8 -M * Hams Fork 7840 13.9 8.0 174 15.8 7.9 200 Hewinta 9519 8.7 6.6 132 11.4 9.4 121 Hickerson Park 9145 6.3 4.5 140 6.4 6.6 97 Hole-in-Rock 9150 5.1 4.5 113 7.0 6.2 113 Indian Creek 9425 28.5 16.0 178 -M 15.2 * Kelley R.S. 8180 20.3 9.8 207 23.9 12.5 191 Spirit Lk 10235 10.7 -M * 12.1 -M * Steel Creek Park 10200 12.4 9.7 128 14.4 10.8 133 ----- ----- Basin Index (%) 161 148 UPPER BEAR RIVER Bear River RS 8777 10.6 -M * 13.0 -M * Bug Lake 7950 26.1 12.6 207 24.0 13.4 179 Burts Miller Ranch 8000 5.5 -M * 6.5 -M * Chalk Creek #1 8993 25.5 15.2 168 26.9 17.0 158 Hayden Fork 9212 17.5 9.9 177 -M 14.2 * Kelley R.S. 8180 20.3 9.8 207 23.9 12.5 191 Lily Lake 9156 12.2 8.3 147 14.4 11.6 124 Monte Cristo 8960 26.2 17.8 147 -M 17.6 * Salt River Summit 7760 16.9 8.8 192 22.1 11.5 192 ----- ----- Basin Index (%) 176 169 ----------------------------------------------------------------------------- -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.