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 MONDAY: JANUARY 16 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.2 9.6 158 22.4 12.1 185 Black Bear 8170 21.0 20.7 101 30.0 21.4 140 Blind Bull Sum 8650 21.2 12.2 174 15.8 11.2 141 Cottonwood Creek 7670 14.7 10.4 141 20.9 13.8 151 East Rim Divide 7930 10.1 5.6 180 12.4 6.7 185 Grand Targhee 9260 27.0 21.2 127 25.1 18.0 139 Granite Creek 6770 14.7 8.6 171 20.5 11.7 175 Grassy Lake 7265 21.9 16.5 133 32.8 20.7 158 Gros Ventre Summit 8750 9.3 7.4 126 13.5 7.2 188 Gunsight Pass 9820 10.0 7.3 137 14.0 7.7 182 Lewis Lake Divide 7850 18.8 16.5 114 27.7 20.1 138 Phillips Bench 8200 17.2 14.7 117 26.2 15.8 166 Salt River Summit 7760 11.0 6.3 175 16.5 9.2 179 Snake River Station 6920 13.7 9.0 152 21.7 13.4 162 Spring Creek Divide 9000 19.1 12.0 159 22.4 13.4 167 Thumb Divide 7980 9.8 7.9 124 15.3 10.7 143 Togwotee Pass 9580 17.5 13.0 135 21.2 13.9 153 Two Ocean Plateau 9240 22.9 15.5 148 23.5 15.3 154 Willow Creek 8380 18.4 14.0 131 27.6 18.8 147 Younts Peak 8350 12.0 8.4 143 16.2 9.2 176 ----- ----- Basin Index (%) 137 157 MADISON-GALLATIN Black Bear 8170 21.0 20.7 101 30.0 21.4 140 Canyon 7870 9.2 7.2 128 15.3 9.3 165 Madison Plateau 7750 12.6 12.2 103 21.5 15.1 142 West Yellowstone 6700 7.0 6.2 113 14.6 8.4 174 Whiskey Creek 6800 7.9 8.3 95 15.8 11.6 136 ----- ----- Basin Index (%) 106 148 YELLOWSTONE Beartooth Lake 9360 15.0 12.4 121 11.4 11.1 103 Burnt Mtn 5880 4.5 2.1 214 8.4 7.4 114 Canyon 7870 9.2 7.2 128 15.3 9.3 165 Cole Creek 7850 6.1 7.2 85 5.1 7.0 73 Evening Star 9200 18.1 14.0 129 24.4 15.8 154 Fisher Creek 9100 17.7 18.2 97 22.9 18.0 127 Northeast Entrance 7350 6.4 5.3 121 11.5 7.2 160 Parker Peak 9400 15.8 11.5 137 18.6 10.0 186 Sylvan Lake 8420 12.4 11.2 111 22.7 13.1 173 Thumb Divide 7980 9.8 7.9 124 15.3 10.7 143 Two Ocean Plateau 9240 22.9 15.5 148 23.5 15.3 154 White Mill 8700 14.7 12.6 117 17.7 13.5 131 Wolverine 7650 9.3 5.9 158 12.4 7.3 170 ----- ----- Basin Index (%) 124 144 WIND RIVER Burroughs Creek 8750 11.7 -M * 14.2 -M * Castle Creek 8400 6.6 -M * 8.6 -M * Cold Springs 9630 5.9 4.0 148 8.4 5.7 147 Deer Park 9700 17.2 7.2 239 20.8 10.8 193 Hobbs Park 10100 11.7 7.3 160 11.7 7.0 167 Kirwin 9550 9.3 5.3 175 12.3 6.6 186 Little Warm 9370 6.3 5.6 112 11.5 7.2 160 Owl Creek 8975 3.5 2.9 121 5.1 3.2 159 South Pass 9040 16.3 7.7 212 16.0 9.7 165 St. Lawrence Alt 8620 3.0 3.5 86 7.1 4.8 148 Togwotee Pass 9580 17.5 13.0 135 21.2 13.9 153 Townsend Creek 8700 6.2 4.4 141 9.0 6.5 138 ----- ----- Basin Index (%) 159 163 BIGHORN BASIN Bald Mtn. 9380 11.7 9.9 118 10.4 9.5 109 Bear Trap Meadow 8200 2.8 2.9 97 4.3 4.6 93 Bone Springs Div 9350 9.1 8.6 106 9.5 8.4 113 Grave Springs 8550 3.2 4.4 73 4.4 5.8 76 Kirwin 9550 9.3 5.3 175 12.3 6.6 186 Marquette 8760 4.5 -M * 8.0 -M * Middle Powder 7760 4.1 6.0 68 4.8 6.7 72 Owl Creek 8975 3.5 2.9 121 5.1 3.2 159 Powder River Pass 9480 3.4 5.8 59 6.2 7.0 89 Shell Creek 9580 9.6 8.3 116 7.8 7.7 101 Timber Creek 7950 3.2 2.5 128 4.6 4.2 110 ----- ----- Basin Index (%) 106 109 SHOSHONE RIVER Blackwater 9780 19.0 12.9 147 22.7 11.7 194 Evening Star 9200 18.1 14.0 129 24.4 15.8 154 Marquette 8760 4.5 -M * 8.0 -M * Sylvan Road 7120 9.0 6.6 136 19.3 10.6 182 Younts Peak 8350 12.0 8.4 143 16.2 9.2 176 ----- ----- Basin Index (%) 139 175 POWDER RIVER Bear Trap Meadow 8200 2.8 2.9 97 4.3 4.6 93 Cloud Peak Reservoir 9860 6.6 7.2 92 8.4 7.1 118 Grave Springs 8550 3.2 4.4 73 4.4 5.8 76 Hansen Sawmill 8360 4.3 3.5 123 6.1 4.5 136 Middle Powder 7760 4.1 6.0 68 4.8 6.7 72 Powder River Pass 9480 3.4 5.8 59 6.2 7.0 89 Soldier Park 8720 7.0 -M * 6.3 -M * ----- ----- Basin Index (%) 82 96 TONGUE RIVER Big Goose 7990 4.9 4.3 114 6.0 5.9 102 Bone Springs Div 9350 9.1 8.6 106 9.5 8.4 113 Burgess Junction 7880 5.1 5.8 88 6.3 6.7 94 Dome Lake 8880 6.1 6.1 100 7.6 7.5 101 Little Goose 8870 5.3 -M * 7.5 -M * Sucker Creek 8880 6.0 6.3 95 6.5 7.7 84 Tie Creek 6870 3.6 2.7 133 6.6 6.4 103 ----- ----- Basin Index (%) 103 100 BELLE FOURCHE Cole Canyon 5910 3.2 2.7 119 4.1 5.1 80 ----- ----- Basin Index (%) 119 80 CHEYENNE RIVER BASIN Blind Park 6890 3.6 4.0 90 4.8 7.0 69 North Rapid Creek 6130 3.9 3.7 105 4.2 5.7 74 ----- ----- Basin Index (%) 97 71 UPPER N. PLATTE Arapaho Ridge 10960 17.7 11.2 158 18.6 12.8 145 Blackhall Mtn 9820 23.4 -M * 24.4 -M * Columbine 9160 17.6 12.4 142 19.0 14.1 135 Divide Peak 8880 11.9 10.4 114 14.5 12.0 121 Joe Wright 10120 13.8 11.2 123 19.3 14.1 137 Laprele Creek 8375 6.5 4.9 133 6.2 6.7 93 Med Bow 10500 24.4 -M * 23.4 -M * North French Creek 10130 15.4 13.9 111 17.0 14.6 116 Never Summer 10280 -M 10.5 * -M -M * Old Battle 10000 22.7 15.6 146 24.8 19.5 127 Rawah 9020 9.3 5.4 172 11.8 8.4 140 Sage Creek Basin 7850 9.6 7.3 132 10.2 8.7 117 Sand Lake 10050 18.2 14.4 126 17.6 13.2 133 South Brush Creek 8440 6.5 6.1 107 7.7 8.4 92 Tower 10500 27.4 22.6 121 30.6 22.1 138 Webber Springs 9250 18.3 11.9 154 22.0 14.8 149 Willow Creek Pass 9540 12.4 6.2 200 13.1 7.4 177 Zirkel 9340 -M 15.8 * 23.1 16.6 139 ----- ----- Basin Index (%) 135 132 SWEETWATER Deer Park 9700 17.2 7.2 239 20.8 10.8 193 Larsen Creek 9000 11.5 6.1 189 15.0 -M * South Pass 9040 16.3 7.7 212 16.0 9.7 165 ----- ----- Basin Index (%) 214 180 LOWER N. PLATTE Casper Mtn. 7900 5.8 6.7 87 6.1 8.2 74 Laprele Creek 8375 6.5 4.9 133 6.2 6.7 93 Reno Hill 8400 -M 6.6 * -M 8.0 * Windy Peak 7900 5.0 3.6 139 5.8 5.8 100 ----- ----- Basin Index (%) 114 87 LARAMIE RIVER Brooklyn Lake 10240 15.2 10.7 142 14.1 11.1 127 Cinnabar Park 9574 12.5 11.7 107 15.3 14.2 108 Crow Creek 8330 4.1 5.0 82 5.7 6.0 95 Deadman Hill 10220 13.6 8.2 166 13.4 9.0 149 Rawah 9020 9.3 5.4 172 11.8 8.4 140 Roach 9700 11.5 8.7 132 13.7 10.4 132 ----- ----- Basin Index (%) 133 125 S. PLATTE Black Mountain 8920 6.9 -M * 8.2 -M * Crow Creek 8330 4.1 5.0 82 5.7 6.0 95 Deadman Hill 10220 13.6 8.2 166 13.4 9.0 149 ----- ----- Basin Index (%) 134 127 LITTLE SNAKE RIVER Battle Mountain 7440 8.0 5.6 143 -M 8.5 * Divide Peak 8880 11.9 10.4 114 14.5 12.0 121 Elk River 8700 14.7 9.2 160 14.7 11.1 132 Little Snake River 8915 20.6 12.3 167 26.3 17.8 148 Old Battle 10000 22.7 15.6 146 24.8 19.5 127 Sage Creek Basin 7850 9.6 7.3 132 10.2 8.7 117 Sandstone RS 8150 10.1 6.7 151 10.6 10.4 102 Whiskey Park 8950 18.0 13.2 136 20.7 15.1 137 ----- ----- Basin Index (%) 144 129 UPPER GREEN RIVER Big Sandy Opening 9080 12.2 7.0 174 14.8 7.4 200 Blind Bull Sum 8650 21.2 12.2 174 15.8 11.2 141 East Rim Divide 7930 10.1 5.6 180 12.4 6.7 185 Elkhart Park G.S. 9400 9.2 6.4 144 14.6 7.5 195 Gros Ventre Summit 8750 9.3 7.4 126 13.5 7.2 188 Gunsight Pass 9820 10.0 7.3 137 14.0 7.7 182 Kendall R.S. 7740 11.8 6.5 182 16.0 8.0 200 Loomis Park 8240 14.0 7.8 179 19.3 9.8 197 New Fork Lake 8340 9.3 5.6 166 9.8 6.2 158 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 11.2 6.4 175 15.8 8.0 198 Spring Creek Divide 9000 19.1 12.0 159 22.4 13.4 167 Triple Peak 8500 20.8 11.4 182 23.0 13.8 167 ----- ----- Basin Index (%) 165 179 LOWER GREEN RIVER Blacks Fork Jct 8870 7.5 -M * 9.7 -M * Buck Pasture 9700 11.8 -M * 14.7 -M * EF Blacks Fork GS 9360 8.6 -M * 9.4 -M * Hams Fork 7840 10.0 5.7 175 12.1 6.4 189 Hewinta 9519 7.8 4.9 159 10.2 7.5 136 Hickerson Park 9145 5.5 3.2 172 5.7 5.6 102 Hole-in-Rock 9150 4.4 3.4 129 6.3 5.2 121 Indian Creek 9425 19.7 12.2 161 -M 12.1 * Kelley R.S. 8180 13.7 7.4 185 18.9 10.1 187 Spirit Lk 10235 8.3 -M * 10.0 -M * Steel Creek Park 10200 10.8 7.3 148 12.6 8.7 145 ----- ----- Basin Index (%) 163 151 UPPER BEAR RIVER Bear River RS 8777 8.9 -M * 10.8 -M * Bug Lake 7950 19.0 8.6 221 18.4 10.8 170 Burts Miller Ranch 8000 4.8 -M * 5.2 -M * Chalk Creek #1 8993 19.4 11.6 167 -M 13.7 * Hayden Fork 9212 13.8 7.1 194 18.2 11.4 160 Kelley R.S. 8180 13.7 7.4 185 18.9 10.1 187 Lily Lake 9156 10.1 6.5 155 12.1 9.4 129 Monte Cristo 8960 18.7 13.6 138 18.6 14.2 131 Salt River Summit 7760 11.0 6.3 175 16.5 9.2 179 ----- ----- Basin Index (%) 173 158 ----------------------------------------------------------------------------- -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.