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: JANUARY 15 , 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 9.5 160 22.4 12.0 187 Black Bear 8170 21.0 20.5 102 29.9 21.2 141 Blind Bull Sum 8650 21.3 12.2 175 15.9 11.1 143 Cottonwood Creek 7670 14.8 10.2 145 20.9 13.7 153 East Rim Divide 7930 10.1 5.5 184 12.4 6.6 188 Grand Targhee 9260 26.9 21.1 127 25.0 17.9 140 Granite Creek 6770 14.8 8.4 176 20.5 11.6 177 Grassy Lake 7265 21.9 16.4 134 32.8 20.4 161 Gros Ventre Summit 8750 9.3 7.4 126 13.5 7.1 190 Gunsight Pass 9820 10.0 7.3 137 14.0 7.7 182 Lewis Lake Divide 7850 18.8 16.3 115 27.5 20.0 138 Phillips Bench 8200 17.2 14.5 119 26.2 15.6 168 Salt River Summit 7760 11.1 6.1 182 16.5 9.1 181 Snake River Station 6920 13.7 8.9 154 21.6 13.2 164 Spring Creek Divide 9000 19.2 11.8 163 22.5 13.3 169 Thumb Divide 7980 9.8 7.9 124 15.3 10.5 146 Togwotee Pass 9580 17.4 12.9 135 21.2 13.8 154 Two Ocean Plateau 9240 22.9 15.4 149 23.4 15.1 155 Willow Creek 8380 18.5 13.8 134 27.6 18.6 148 Younts Peak 8350 11.9 8.3 143 16.1 9.2 175 ----- ----- Basin Index (%) 139 159 MADISON-GALLATIN Black Bear 8170 21.0 20.5 102 29.9 21.2 141 Canyon 7870 9.2 7.1 130 15.3 9.2 166 Madison Plateau 7750 12.5 12.0 104 21.5 14.9 144 West Yellowstone 6700 7.0 6.1 115 14.6 8.3 176 Whiskey Creek 6800 7.9 8.2 96 15.8 11.5 137 ----- ----- Basin Index (%) 107 149 YELLOWSTONE Beartooth Lake 9360 15.1 12.3 123 11.5 11.0 105 Burnt Mtn 5880 4.5 2.1 214 8.4 7.3 115 Canyon 7870 9.2 7.1 130 15.3 9.2 166 Cole Creek 7850 6.1 7.1 86 5.1 6.9 74 Evening Star 9200 18.1 14.0 129 24.3 15.6 156 Fisher Creek 9100 17.6 18.0 98 22.9 17.9 128 Northeast Entrance 7350 6.4 5.2 123 11.5 7.2 160 Parker Peak 9400 15.8 11.4 139 18.6 9.9 188 Sylvan Lake 8420 12.4 11.1 112 22.7 13.0 175 Thumb Divide 7980 9.8 7.9 124 15.3 10.5 146 Two Ocean Plateau 9240 22.9 15.4 149 23.4 15.1 155 White Mill 8700 14.7 12.5 118 17.6 13.4 131 Wolverine 7650 9.3 5.8 160 12.4 7.2 172 ----- ----- Basin Index (%) 125 145 WIND RIVER Burroughs Creek 8750 11.7 -M * 14.2 -M * Castle Creek 8400 6.6 -M * 8.6 -M * Cold Springs 9630 5.8 3.9 149 8.3 5.6 148 Deer Park 9700 17.2 7.2 239 20.8 10.8 193 Hobbs Park 10100 11.7 7.2 162 11.6 6.9 168 Kirwin 9550 9.3 5.2 179 12.3 6.5 189 Little Warm 9370 6.4 5.5 116 11.5 7.1 162 Owl Creek 8975 3.4 2.9 117 5.0 3.2 156 South Pass 9040 16.3 7.6 214 16.0 9.6 167 St. Lawrence Alt 8620 3.0 3.4 88 7.1 4.8 148 Togwotee Pass 9580 17.4 12.9 135 21.2 13.8 154 Townsend Creek 8700 6.1 4.3 142 8.9 6.4 139 ----- ----- Basin Index (%) 161 164 BIGHORN BASIN Bald Mtn. 9380 11.7 9.8 119 10.3 9.4 110 Bear Trap Meadow 8200 2.8 2.9 97 4.3 4.6 93 Bone Springs Div 9350 9.1 8.5 107 9.5 8.4 113 Grave Springs 8550 3.2 4.3 74 4.4 5.8 76 Kirwin 9550 9.3 5.2 179 12.3 6.5 189 Marquette 8760 4.4 -M * 8.0 -M * Middle Powder 7760 4.1 5.9 69 4.8 6.6 73 Owl Creek 8975 3.4 2.9 117 5.0 3.2 156 Powder River Pass 9480 3.4 5.7 60 6.2 6.9 90 Shell Creek 9580 9.5 8.2 116 7.7 7.6 101 Timber Creek 7950 3.2 2.5 128 4.6 4.2 110 ----- ----- Basin Index (%) 107 109 SHOSHONE RIVER Blackwater 9780 19.0 12.9 147 22.7 11.6 196 Evening Star 9200 18.1 14.0 129 24.3 15.6 156 Marquette 8760 4.4 -M * 8.0 -M * Sylvan Road 7120 9.0 6.5 138 19.2 10.5 183 Younts Peak 8350 11.9 8.3 143 16.1 9.2 175 ----- ----- 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 7.0 120 Grave Springs 8550 3.2 4.3 74 4.4 5.8 76 Hansen Sawmill 8360 4.3 3.5 123 6.1 4.5 136 Middle Powder 7760 4.1 5.9 69 4.8 6.6 73 Powder River Pass 9480 3.4 5.7 60 6.2 6.9 90 Soldier Park 8720 6.9 -M * 6.3 -M * ----- ----- Basin Index (%) 83 97 TONGUE RIVER Big Goose 7990 4.9 4.3 114 6.0 5.8 103 Bone Springs Div 9350 9.1 8.5 107 9.5 8.4 113 Burgess Junction 7880 5.1 5.7 89 6.3 6.6 95 Dome Lake 8880 6.1 6.0 102 7.6 7.5 101 Little Goose 8870 5.3 -M * 7.4 -M * Sucker Creek 8880 5.9 6.3 94 6.4 7.6 84 Tie Creek 6870 3.6 2.6 138 6.6 6.4 103 ----- ----- Basin Index (%) 104 100 BELLE FOURCHE Cole Canyon 5910 3.1 2.6 119 4.1 5.1 80 ----- ----- Basin Index (%) 119 80 CHEYENNE RIVER BASIN Blind Park 6890 3.6 4.0 90 4.8 6.9 70 North Rapid Creek 6130 3.8 3.7 103 4.1 5.6 73 ----- ----- Basin Index (%) 96 71 UPPER N. PLATTE Arapaho Ridge 10960 17.7 11.1 159 18.6 12.8 145 Blackhall Mtn 9820 23.3 -M * 24.3 -M * Columbine 9160 17.5 12.2 143 18.9 13.9 136 Divide Peak 8880 11.9 10.2 117 14.5 11.9 122 Joe Wright 10120 13.5 11.1 122 19.3 14.0 138 Laprele Creek 8375 6.4 4.8 133 6.1 6.7 91 Med Bow 10500 24.3 -M * 23.4 -M * North French Creek 10130 15.4 13.8 112 17.0 14.5 117 Never Summer 10280 -M 10.5 * -M -M * Old Battle 10000 22.7 15.5 146 24.8 19.3 128 Rawah 9020 9.3 5.4 172 11.8 8.4 140 Sage Creek Basin 7850 9.6 7.2 133 10.2 8.6 119 Sand Lake 10050 18.2 14.3 127 17.5 13.1 134 South Brush Creek 8440 6.5 6.0 108 7.7 8.3 93 Tower 10500 27.4 22.4 122 30.5 21.9 139 Webber Springs 9250 18.3 11.8 155 21.8 14.6 149 Willow Creek Pass 9540 12.3 6.2 198 13.1 7.4 177 Zirkel 9340 -M 15.6 * 23.0 16.6 139 ----- ----- Basin Index (%) 136 133 SWEETWATER Deer Park 9700 17.2 7.2 239 20.8 10.8 193 Larsen Creek 9000 11.4 6.0 190 14.8 -M * South Pass 9040 16.3 7.6 214 16.0 9.6 167 ----- ----- Basin Index (%) 216 180 LOWER N. PLATTE Casper Mtn. 7900 5.8 6.7 87 6.1 8.1 75 Laprele Creek 8375 6.4 4.8 133 6.1 6.7 91 Reno Hill 8400 -M 6.6 * -M 8.0 * Windy Peak 7900 5.0 3.6 139 5.7 5.7 100 ----- ----- Basin Index (%) 114 87 LARAMIE RIVER Brooklyn Lake 10240 15.1 10.6 142 14.1 10.9 129 Cinnabar Park 9574 12.5 11.7 107 15.2 14.2 107 Crow Creek 8330 4.0 4.9 82 5.7 6.0 95 Deadman Hill 10220 13.5 8.1 167 13.4 8.9 151 Rawah 9020 9.3 5.4 172 11.8 8.4 140 Roach 9700 11.5 8.6 134 13.7 10.4 132 ----- ----- Basin Index (%) 134 126 S. PLATTE Black Mountain 8920 6.9 -M * 8.2 -M * Crow Creek 8330 4.0 4.9 82 5.7 6.0 95 Deadman Hill 10220 13.5 8.1 167 13.4 8.9 151 ----- ----- Basin Index (%) 135 128 LITTLE SNAKE RIVER Battle Mountain 7440 8.0 5.4 148 10.1 8.4 120 Divide Peak 8880 11.9 10.2 117 14.5 11.9 122 Elk River 8700 14.7 9.1 162 14.7 11.0 134 Little Snake River 8915 20.6 12.2 169 26.2 17.8 147 Old Battle 10000 22.7 15.5 146 24.8 19.3 128 Sage Creek Basin 7850 9.6 7.2 133 10.2 8.6 119 Sandstone RS 8150 10.1 6.6 153 10.5 10.3 102 Whiskey Park 8950 17.9 12.8 140 20.6 15.0 137 ----- ----- Basin Index (%) 146 129 UPPER GREEN RIVER Big Sandy Opening 9080 12.3 7.0 176 14.8 7.3 203 Blind Bull Sum 8650 21.3 12.2 175 15.9 11.1 143 East Rim Divide 7930 10.1 5.5 184 12.4 6.6 188 Elkhart Park G.S. 9400 9.1 6.3 144 14.6 7.4 197 Gros Ventre Summit 8750 9.3 7.4 126 13.5 7.1 190 Gunsight Pass 9820 10.0 7.3 137 14.0 7.7 182 Kendall R.S. 7740 11.7 6.5 180 16.0 7.9 203 Loomis Park 8240 14.0 7.7 182 19.3 9.7 199 New Fork Lake 8340 9.3 5.5 169 9.8 6.2 158 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 11.2 6.3 178 15.8 8.0 198 Spring Creek Divide 9000 19.2 11.8 163 22.5 13.3 169 Triple Peak 8500 20.8 11.3 184 23.0 13.6 169 ----- ----- Basin Index (%) 167 181 LOWER GREEN RIVER Blacks Fork Jct 8870 7.5 -M * 9.7 -M * Buck Pasture 9700 11.7 -M * 14.6 -M * EF Blacks Fork GS 9360 8.6 -M * 9.4 -M * Hams Fork 7840 10.1 5.6 180 12.1 6.3 192 Hewinta 9519 7.8 4.9 159 10.2 7.4 138 Hickerson Park 9145 5.5 3.2 172 5.6 5.5 102 Hole-in-Rock 9150 4.4 3.3 133 6.3 5.2 121 Indian Creek 9425 19.8 12.0 165 -M 12.0 * Kelley R.S. 8180 13.8 7.3 189 18.9 10.0 189 Spirit Lk 10235 8.3 -M * 10.0 -M * Steel Creek Park 10200 10.8 7.3 148 12.6 8.6 147 ----- ----- Basin Index (%) 166 153 UPPER BEAR RIVER Bear River RS 8777 8.9 -M * 10.8 -M * Bug Lake 7950 18.9 8.5 222 18.3 10.7 171 Burts Miller Ranch 8000 4.7 -M * 5.2 -M * Chalk Creek #1 8993 19.4 11.5 169 -M 13.5 * Hayden Fork 9212 13.9 7.0 199 18.2 11.3 161 Kelley R.S. 8180 13.8 7.3 189 18.9 10.0 189 Lily Lake 9156 10.2 6.4 159 12.0 9.3 129 Monte Cristo 8960 18.7 13.5 139 -M 14.1 * Salt River Summit 7760 11.1 6.1 182 16.5 9.1 181 ----- ----- Basin Index (%) 176 166 ----------------------------------------------------------------------------- -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.