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 FRIDAY: FEBRUARY 10 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 20.8 11.5 181 -M 14.9 * Black Bear 8170 -M 25.6 * 37.4 26.5 141 Blind Bull Sum 8650 31.1 15.1 206 -M 13.7 * Cottonwood Creek 7670 20.1 13.8 146 27.2 16.9 161 East Rim Divide 7930 15.7 7.0 224 16.9 8.2 206 Grand Targhee 9260 31.8 25.0 127 30.0 22.1 136 Granite Creek 6770 23.7 11.6 204 25.4 14.5 175 Grassy Lake 7265 -M 22.2 * 41.3 25.6 161 Gros Ventre Summit 8750 13.9 8.7 160 17.8 8.7 205 Gunsight Pass 9820 15.3 8.8 174 18.4 9.5 194 Lewis Lake Divide 7850 27.8 21.8 128 -M 24.8 * Phillips Bench 8200 -M 16.9 * -M 19.5 * Salt River Summit 7760 16.2 8.5 191 21.7 11.4 190 Snake River Station 6920 17.2 12.2 141 27.9 16.4 170 Spring Creek Divide 9000 27.1 15.7 173 28.8 16.5 175 Thumb Divide 7980 16.1 10.0 161 20.3 12.9 157 Togwotee Pass 9580 24.2 15.7 154 28.0 16.9 166 Two Ocean Plateau 9240 -M 18.9 * -M 18.5 * Willow Creek 8380 25.1 18.2 138 35.6 23.0 155 Younts Peak 8350 19.7 10.2 193 22.7 11.1 205 ----- ----- Basin Index (%) 162 166 MADISON-GALLATIN Black Bear 8170 -M 25.6 * 37.4 26.5 141 Canyon 7870 13.4 8.7 154 19.8 11.5 172 Madison Plateau 7750 19.3 15.1 128 26.8 18.4 146 West Yellowstone 6700 9.5 7.3 130 17.7 10.3 172 Whiskey Creek 6800 11.7 10.0 117 19.6 14.1 139 ----- ----- Basin Index (%) 131 150 YELLOWSTONE Beartooth Lake 9360 -M 14.8 * -M 13.7 * Burnt Mtn 5880 5.2 2.9 179 10.1 8.4 120 Canyon 7870 13.4 8.7 154 19.8 11.5 172 Cole Creek 7850 7.3 8.8 83 5.8 8.1 72 Evening Star 9200 26.4 16.7 158 29.4 19.2 153 Fisher Creek 9100 -M 22.0 * 31.8 22.1 144 Northeast Entrance 7350 9.3 6.9 135 14.8 8.8 168 Parker Peak 9400 22.9 13.7 167 22.9 12.1 189 Sylvan Lake 8420 17.6 13.5 130 28.3 15.7 180 Thumb Divide 7980 16.1 10.0 161 20.3 12.9 157 Two Ocean Plateau 9240 -M 18.9 * -M 18.5 * White Mill 8700 21.8 15.6 140 24.0 16.5 145 Wolverine 7650 -M 7.4 * -M 8.7 * ----- ----- Basin Index (%) 145 153 WIND RIVER Burroughs Creek 8750 18.0 -M * 19.9 -M * Castle Creek 8400 10.1 -M * 12.4 -M * Cold Springs 9630 9.1 4.8 190 -M 6.5 * Deer Park 9700 21.6 9.5 227 25.2 13.2 191 Hobbs Park 10100 15.6 8.1 193 14.8 8.2 180 Kirwin 9550 13.7 6.1 225 16.6 7.6 218 Little Warm 9370 10.9 6.7 163 -M 8.7 * Owl Creek 8975 5.8 3.2 181 7.3 3.7 197 South Pass 9040 20.3 9.8 207 18.9 11.6 163 St. Lawrence Alt 8620 5.1 4.3 119 9.2 5.6 164 Togwotee Pass 9580 24.2 15.7 154 28.0 16.9 166 Townsend Creek 8700 8.2 5.7 144 11.0 7.5 147 ----- ----- Basin Index (%) 182 176 BIGHORN BASIN Bald Mtn. 9380 13.9 11.7 119 12.3 11.4 108 Bear Trap Meadow 8200 3.9 3.6 108 5.2 5.4 96 Bone Springs Div 9350 11.7 10.1 116 11.8 10.2 116 Grave Springs 8550 4.3 5.2 83 5.0 6.8 74 Kirwin 9550 13.7 6.1 225 16.6 7.6 218 Marquette 8760 6.3 -M * 10.2 -M * Middle Powder 7760 5.1 6.8 75 5.6 7.8 72 Owl Creek 8975 5.8 3.2 181 7.3 3.7 197 Powder River Pass 9480 4.8 6.9 70 7.8 8.3 94 Shell Creek 9580 11.6 9.6 121 9.0 9.4 96 Timber Creek 7950 4.5 3.1 145 5.8 4.7 123 ----- ----- Basin Index (%) 120 115 SHOSHONE RIVER Blackwater 9780 26.5 15.1 175 29.1 14.0 208 Evening Star 9200 26.4 16.7 158 29.4 19.2 153 Marquette 8760 6.3 -M * 10.2 -M * Sylvan Road 7120 13.1 8.2 160 23.9 12.5 191 Younts Peak 8350 19.7 10.2 193 22.7 11.1 205 ----- ----- Basin Index (%) 171 185 POWDER RIVER Bear Trap Meadow 8200 3.9 3.6 108 5.2 5.4 96 Cloud Peak Reservoir 9860 8.7 9.0 97 10.3 8.4 123 Grave Springs 8550 4.3 5.2 83 5.0 6.8 74 Hansen Sawmill 8360 6.0 4.2 143 7.9 5.3 149 Middle Powder 7760 5.1 6.8 75 5.6 7.8 72 Powder River Pass 9480 4.8 6.9 70 7.8 8.3 94 Soldier Park 8720 9.4 -M * 7.8 -M * ----- ----- Basin Index (%) 92 100 TONGUE RIVER Big Goose 7990 6.4 5.3 121 7.3 7.0 104 Bone Springs Div 9350 11.7 10.1 116 11.8 10.2 116 Burgess Junction 7880 6.9 7.1 97 7.9 7.9 100 Dome Lake 8880 8.0 7.3 110 9.4 8.8 107 Little Goose 8870 7.0 -M * 9.2 -M * Sucker Creek 8880 7.8 7.5 104 7.8 9.2 85 Tie Creek 6870 4.6 3.6 128 8.0 7.5 107 ----- ----- Basin Index (%) 111 103 BELLE FOURCHE Cole Canyon 5910 3.6 3.9 92 4.7 6.2 76 ----- ----- Basin Index (%) 92 76 CHEYENNE RIVER BASIN Blind Park 6890 4.8 5.3 91 5.9 8.2 72 North Rapid Creek 6130 4.7 4.9 96 5.3 6.6 80 ----- ----- Basin Index (%) 93 76 UPPER N. PLATTE Arapaho Ridge 10960 21.0 14.0 150 21.5 15.2 141 Blackhall Mtn 9820 28.7 -M * 29.0 -M * Columbine 9160 21.1 16.0 132 23.1 17.5 132 Divide Peak 8880 13.9 13.5 103 16.5 14.6 113 Joe Wright 10120 15.6 13.5 116 22.4 17.0 132 Laprele Creek 8375 8.6 5.9 146 7.8 8.1 96 Med Bow 10500 28.7 -M * 26.9 -M * North French Creek 10130 18.2 17.3 105 19.7 17.9 110 Never Summer 10280 17.7 13.2 134 14.7 -M * Old Battle 10000 27.9 20.8 134 29.3 24.0 122 Rawah 9020 10.3 6.9 149 13.3 9.5 140 Sage Creek Basin 7850 11.7 9.0 130 11.9 10.5 113 Sand Lake 10050 21.5 17.6 122 20.1 16.0 126 South Brush Creek 8440 7.8 7.6 103 9.2 10.1 91 Tower 10500 34.0 30.3 112 36.5 27.2 134 Webber Springs 9250 22.7 15.4 147 26.3 18.1 145 Willow Creek Pass 9540 -M 8.1 * -M 8.8 * Zirkel 9340 33.2 19.6 169 34.8 20.3 171 ----- ----- Basin Index (%) 129 129 SWEETWATER Deer Park 9700 21.6 9.5 227 25.2 13.2 191 Larsen Creek 9000 15.4 8.0 192 17.9 -M * South Pass 9040 20.3 9.8 207 18.9 11.6 163 ----- ----- Basin Index (%) 210 178 LOWER N. PLATTE Casper Mtn. 7900 7.5 8.1 93 7.3 9.6 76 Laprele Creek 8375 8.6 5.9 146 7.8 8.1 96 Reno Hill 8400 8.3 8.2 101 8.8 9.5 93 Windy Peak 7900 6.8 4.5 151 7.2 6.7 107 ----- ----- Basin Index (%) 117 92 LARAMIE RIVER Brooklyn Lake 10240 18.9 12.7 149 17.1 13.7 125 Cinnabar Park 9574 14.7 14.1 104 17.4 17.0 102 Crow Creek 8330 4.2 5.8 72 6.1 6.7 91 Deadman Hill 10220 15.9 10.8 147 15.3 10.9 140 Rawah 9020 10.3 6.9 149 13.3 9.5 140 Roach 9700 13.7 10.7 128 16.2 12.6 129 ----- ----- Basin Index (%) 127 121 S. PLATTE Black Mountain 8920 7.5 -M * 8.7 -M * Crow Creek 8330 4.2 5.8 72 6.1 6.7 91 Deadman Hill 10220 15.9 10.8 147 15.3 10.9 140 ----- ----- Basin Index (%) 121 122 LITTLE SNAKE RIVER Battle Mountain 7440 8.4 7.7 109 12.1 10.3 117 Divide Peak 8880 13.9 13.5 103 16.5 14.6 113 Elk River 8700 16.0 12.5 128 16.1 13.6 118 Little Snake River 8915 24.9 17.0 146 30.7 22.1 139 Old Battle 10000 27.9 20.8 134 29.3 24.0 122 Sage Creek Basin 7850 11.7 9.0 130 11.9 10.5 113 Sandstone RS 8150 10.6 8.9 119 12.0 12.8 94 Whiskey Park 8950 22.0 17.4 126 23.4 19.2 122 ----- ----- Basin Index (%) 127 120 UPPER GREEN RIVER Big Sandy Opening 9080 16.0 8.7 184 18.0 8.8 205 Blind Bull Sum 8650 31.1 15.1 206 -M 13.7 * East Rim Divide 7930 15.7 7.0 224 16.9 8.2 206 Elkhart Park G.S. 9400 13.8 8.0 172 18.3 9.0 203 Gros Ventre Summit 8750 13.9 8.7 160 17.8 8.7 205 Gunsight Pass 9820 15.3 8.8 174 18.4 9.5 194 Kendall R.S. 7740 17.3 8.3 208 -M 9.9 * Loomis Park 8240 21.3 10.2 209 23.3 12.0 194 New Fork Lake 8340 13.9 7.1 196 13.8 7.5 184 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M 8.4 * 20.4 9.9 206 Spring Creek Divide 9000 27.1 15.7 173 28.8 16.5 175 Triple Peak 8500 28.9 14.4 201 28.7 17.1 168 ----- ----- Basin Index (%) 191 191 LOWER GREEN RIVER Blacks Fork Jct 8870 8.5 -M * 11.0 -M * Buck Pasture 9700 14.4 -M * 17.0 -M * EF Blacks Fork GS 9360 11.9 -M * 9.8 -M * Hams Fork 7840 13.3 7.8 171 15.2 7.8 195 Hewinta 9519 8.8 6.4 138 11.0 9.2 120 Hickerson Park 9145 6.1 4.3 142 6.5 6.5 100 Hole-in-Rock 9150 5.2 4.3 121 7.1 6.1 116 Indian Creek 9425 26.7 15.6 171 -M 15.1 * Kelley R.S. 8180 18.3 9.6 191 23.3 12.4 188 Spirit Lk 10235 10.2 -M * 11.8 -M * Steel Creek Park 10200 12.2 9.5 128 13.9 10.6 131 ----- ----- Basin Index (%) 158 146 UPPER BEAR RIVER Bear River RS 8777 10.2 -M * 12.3 -M * Bug Lake 7950 25.2 12.2 207 23.7 13.2 180 Burts Miller Ranch 8000 5.3 -M * 6.3 -M * Chalk Creek #1 8993 24.1 14.6 165 25.5 16.7 153 Hayden Fork 9212 16.6 9.5 175 21.7 14.0 155 Kelley R.S. 8180 18.3 9.6 191 23.3 12.4 188 Lily Lake 9156 12.3 8.0 154 13.8 11.3 122 Monte Cristo 8960 24.8 17.2 144 -M 17.4 * Salt River Summit 7760 16.2 8.5 191 21.7 11.4 190 ----- ----- Basin Index (%) 173 164 ----------------------------------------------------------------------------- -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.