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: JANUARY 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 15.3 8.9 172 22.4 11.8 190 Black Bear 8170 21.0 20.0 105 30.0 20.8 144 Blind Bull Sum 8650 21.3 11.6 184 16.1 10.8 149 Cottonwood Creek 7670 14.7 9.6 153 20.0 13.3 150 East Rim Divide 7930 10.2 5.3 192 12.5 6.5 192 Grand Targhee 9260 27.2 20.8 131 24.9 17.7 141 Granite Creek 6770 15.1 7.9 191 20.7 11.3 183 Grassy Lake 7265 22.2 15.7 141 33.3 19.9 167 Gros Ventre Summit 8750 9.4 7.2 131 13.7 7.0 196 Gunsight Pass 9820 10.0 7.1 141 14.0 7.6 184 Lewis Lake Divide 7850 19.2 15.7 122 27.6 19.5 142 Phillips Bench 8200 17.5 13.6 129 26.2 15.3 171 Salt River Summit 7760 11.1 5.8 191 16.6 8.9 187 Snake River Station 6920 13.9 8.3 167 21.8 12.9 169 Spring Creek Divide 9000 19.2 11.2 171 22.4 13.0 172 Thumb Divide 7980 10.1 7.6 133 15.5 10.3 150 Togwotee Pass 9580 17.5 12.6 139 21.3 13.5 158 Two Ocean Plateau 9240 23.1 15.0 154 23.6 14.8 159 Willow Creek 8380 18.4 13.2 139 27.6 18.2 152 Younts Peak 8350 12.2 7.9 154 16.4 9.0 182 ----- ----- Basin Index (%) 146 163 MADISON-GALLATIN Black Bear 8170 21.0 20.0 105 30.0 20.8 144 Canyon 7870 9.1 6.8 134 15.2 9.0 169 Madison Plateau 7750 12.4 11.5 108 21.6 14.6 148 West Yellowstone 6700 7.3 5.9 124 14.7 8.2 179 Whiskey Creek 6800 8.2 8.1 101 16.1 11.3 142 ----- ----- Basin Index (%) 111 153 YELLOWSTONE Beartooth Lake 9360 15.0 11.7 128 10.4 10.7 97 Burnt Mtn 5880 4.3 2.0 215 8.3 7.2 115 Canyon 7870 9.1 6.8 134 15.2 9.0 169 Cole Creek 7850 5.9 6.8 87 5.0 6.8 74 Evening Star 9200 17.9 13.5 133 23.9 15.2 157 Fisher Creek 9100 17.7 17.3 102 22.7 17.5 130 Northeast Entrance 7350 6.4 5.0 128 11.5 7.0 164 Parker Peak 9400 16.0 11.2 143 18.7 9.7 193 Sylvan Lake 8420 12.2 10.9 112 22.8 12.7 180 Thumb Divide 7980 10.1 7.6 133 15.5 10.3 150 Two Ocean Plateau 9240 23.1 15.0 154 23.6 14.8 159 White Mill 8700 14.6 12.0 122 17.7 13.1 135 Wolverine 7650 9.9 5.6 177 -M 7.1 * ----- ----- Basin Index (%) 129 146 WIND RIVER Burroughs Creek 8750 11.9 -M * 14.3 -M * Castle Creek 8400 6.7 -M * 8.7 -M * Cold Springs 9630 5.9 3.7 159 8.1 5.5 147 Deer Park 9700 -M 7.1 * 20.7 10.7 193 Hobbs Park 10100 11.7 7.2 162 11.6 6.8 171 Kirwin 9550 9.5 5.0 190 12.5 6.4 195 Little Warm 9370 6.5 5.3 123 11.5 7.0 164 Owl Creek 8975 3.4 2.8 121 5.1 3.1 165 South Pass 9040 16.4 7.3 225 15.9 9.5 167 St. Lawrence Alt 8620 3.2 3.4 94 7.2 4.7 153 Togwotee Pass 9580 17.5 12.6 139 21.3 13.5 158 Townsend Creek 8700 6.4 4.2 152 9.0 6.3 143 ----- ----- Basin Index (%) 156 167 BIGHORN BASIN Bald Mtn. 9380 11.7 9.6 122 10.2 9.1 112 Bear Trap Meadow 8200 2.7 2.8 96 4.4 4.6 96 Bone Springs Div 9350 9.1 8.2 111 9.4 8.1 116 Grave Springs 8550 3.3 4.1 80 4.6 5.7 81 Kirwin 9550 9.5 5.0 190 12.5 6.4 195 Marquette 8760 4.5 -M * 7.9 -M * Middle Powder 7760 4.1 5.7 72 4.9 6.5 75 Owl Creek 8975 3.4 2.8 121 5.1 3.1 165 Powder River Pass 9480 3.4 5.6 61 6.2 6.7 93 Shell Creek 9580 9.5 7.8 122 7.6 7.4 103 Timber Creek 7950 3.2 2.3 139 4.6 4.1 112 ----- ----- Basin Index (%) 111 113 SHOSHONE RIVER Blackwater 9780 19.0 12.4 153 -M 11.4 * Evening Star 9200 17.9 13.5 133 23.9 15.2 157 Marquette 8760 4.5 -M * 7.9 -M * Sylvan Road 7120 9.2 6.2 148 19.1 10.4 184 Younts Peak 8350 12.2 7.9 154 16.4 9.0 182 ----- ----- Basin Index (%) 146 172 POWDER RIVER Bear Trap Meadow 8200 2.7 2.8 96 4.4 4.6 96 Cloud Peak Reservoir 9860 6.8 6.9 99 8.6 6.9 125 Grave Springs 8550 3.3 4.1 80 4.6 5.7 81 Hansen Sawmill 8360 4.4 3.4 129 6.1 4.4 139 Middle Powder 7760 4.1 5.7 72 4.9 6.5 75 Powder River Pass 9480 3.4 5.6 61 6.2 6.7 93 Soldier Park 8720 6.9 -M * 6.4 -M * ----- ----- Basin Index (%) 87 100 TONGUE RIVER Big Goose 7990 4.9 4.1 120 5.8 5.7 102 Bone Springs Div 9350 9.1 8.2 111 9.4 8.1 116 Burgess Junction 7880 5.1 5.3 96 6.3 6.5 97 Dome Lake 8880 6.2 5.8 107 7.5 7.3 103 Little Goose 8870 5.4 -M * 7.4 -M * Sucker Creek 8880 5.9 6.0 98 6.4 7.4 86 Tie Creek 6870 3.6 2.4 150 6.6 6.2 106 ----- ----- Basin Index (%) 109 102 BELLE FOURCHE Cole Canyon 5910 3.1 2.5 124 4.0 5.0 80 ----- ----- Basin Index (%) 124 80 CHEYENNE RIVER BASIN Blind Park 6890 3.5 3.9 90 4.7 6.6 71 North Rapid Creek 6130 3.7 3.5 106 4.0 5.6 71 ----- ----- Basin Index (%) 97 71 UPPER N. PLATTE Arapaho Ridge 10960 17.4 10.9 160 18.2 12.5 146 Blackhall Mtn 9820 22.2 -M * -M -M * Columbine 9160 17.1 11.6 147 18.8 13.6 138 Divide Peak 8880 11.4 9.9 115 13.7 11.6 118 Joe Wright 10120 13.4 10.7 125 19.1 13.7 139 Laprele Creek 8375 6.4 4.6 139 6.0 6.5 92 Med Bow 10500 23.8 -M * 23.2 -M * North French Creek 10130 15.0 13.4 112 16.7 14.1 118 Never Summer 10280 -M 10.3 * -M -M * Old Battle 10000 -M 15.1 * 23.9 18.9 126 Rawah 9020 9.2 5.2 177 11.2 8.3 135 Sage Creek Basin 7850 9.2 6.9 133 9.8 8.6 114 Sand Lake 10050 18.0 13.9 129 17.3 12.8 135 South Brush Creek 8440 6.2 5.8 107 7.6 8.1 94 Tower 10500 25.8 21.2 122 28.8 21.4 135 Webber Springs 9250 18.0 11.5 157 21.5 14.3 150 Willow Creek Pass 9540 12.0 6.1 197 12.8 7.2 178 Zirkel 9340 -M 14.5 * 22.9 16.3 140 ----- ----- Basin Index (%) 136 132 SWEETWATER Deer Park 9700 -M 7.1 * 20.7 10.7 193 Larsen Creek 9000 11.6 5.8 200 15.0 -M * South Pass 9040 16.4 7.3 225 15.9 9.5 167 ----- ----- Basin Index (%) 214 181 LOWER N. PLATTE Casper Mtn. 7900 5.9 6.7 88 6.2 8.0 78 Laprele Creek 8375 6.4 4.6 139 6.0 6.5 92 Reno Hill 8400 -M 6.5 * -M 7.8 * Windy Peak 7900 5.0 3.4 147 5.6 5.6 100 ----- ----- Basin Index (%) 118 89 LARAMIE RIVER Brooklyn Lake 10240 14.8 10.1 147 13.7 10.6 129 Cinnabar Park 9574 12.1 11.3 107 14.9 13.8 108 Crow Creek 8330 4.0 4.9 82 5.6 5.9 95 Deadman Hill 10220 13.1 7.9 166 13.0 8.8 148 Rawah 9020 9.2 5.2 177 11.2 8.3 135 Roach 9700 11.0 8.2 134 13.1 10.1 130 ----- ----- Basin Index (%) 135 124 S. PLATTE Black Mountain 8920 6.8 -M * 8.1 -M * Crow Creek 8330 4.0 4.9 82 5.6 5.9 95 Deadman Hill 10220 13.1 7.9 166 13.0 8.8 148 ----- ----- Basin Index (%) 134 127 LITTLE SNAKE RIVER Battle Mountain 7440 7.7 5.1 151 10.0 8.2 122 Divide Peak 8880 11.4 9.9 115 13.7 11.6 118 Elk River 8700 13.8 8.6 160 13.7 10.6 129 Little Snake River 8915 -M 11.7 * 25.6 17.6 145 Old Battle 10000 -M 15.1 * 23.9 18.9 126 Sage Creek Basin 7850 9.2 6.9 133 9.8 8.6 114 Sandstone RS 8150 10.0 6.1 164 9.9 10.0 99 Whiskey Park 8950 16.9 11.8 143 19.8 14.4 138 ----- ----- Basin Index (%) 143 127 UPPER GREEN RIVER Big Sandy Opening 9080 12.4 6.9 180 14.8 7.2 206 Blind Bull Sum 8650 21.3 11.6 184 16.1 10.8 149 East Rim Divide 7930 10.2 5.3 192 12.5 6.5 192 Elkhart Park G.S. 9400 9.1 6.1 149 14.5 7.3 199 Gros Ventre Summit 8750 9.4 7.2 131 13.7 7.0 196 Gunsight Pass 9820 10.0 7.1 141 14.0 7.6 184 Kendall R.S. 7740 11.9 6.1 195 16.2 7.8 208 Loomis Park 8240 14.1 7.3 193 19.4 9.5 204 New Fork Lake 8340 9.4 5.3 177 9.8 6.0 163 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 11.3 6.1 185 15.9 7.8 204 Spring Creek Divide 9000 19.2 11.2 171 22.4 13.0 172 Triple Peak 8500 20.8 10.6 196 23.1 13.3 174 ----- ----- Basin Index (%) 175 185 LOWER GREEN RIVER Blacks Fork Jct 8870 7.7 -M * 9.7 -M * Buck Pasture 9700 11.5 -M * 13.5 -M * EF Blacks Fork GS 9360 8.7 -M * 9.3 -M * Hams Fork 7840 10.3 5.4 191 12.2 6.2 197 Hewinta 9519 7.9 4.7 168 10.2 7.3 140 Hickerson Park 9145 5.5 3.1 177 5.8 5.4 107 Hole-in-Rock 9150 4.5 3.3 136 6.4 5.1 125 Indian Creek 9425 19.7 11.6 170 -M 11.8 * Kelley R.S. 8180 14.0 7.1 197 19.0 9.8 194 Spirit Lk 10235 8.3 -M * 10.1 -M * Steel Creek Park 10200 10.8 7.0 154 12.4 8.5 146 ----- ----- Basin Index (%) 172 156 UPPER BEAR RIVER Bear River RS 8777 9.0 -M * 10.4 -M * Bug Lake 7950 18.6 7.8 238 18.0 10.5 171 Burts Miller Ranch 8000 4.6 -M * 5.2 -M * Chalk Creek #1 8993 19.3 11.2 172 -M 13.3 * Hayden Fork 9212 13.9 6.7 207 -M 11.1 * Kelley R.S. 8180 14.0 7.1 197 19.0 9.8 194 Lily Lake 9156 10.1 6.1 166 11.8 9.1 130 Monte Cristo 8960 18.6 12.9 144 -M 13.8 * Salt River Summit 7760 11.1 5.8 191 16.6 8.9 187 ----- ----- Basin Index (%) 183 171* ----------------------------------------------------------------------------- -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.