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 WEDNESDAY: JANUARY 18 , 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 9.8 155 22.5 12.3 183 Black Bear 8170 21.1 21.1 100 30.2 21.8 139 Blind Bull Sum 8650 21.5 12.4 173 -M 11.5 * Cottonwood Creek 7670 14.7 10.8 136 20.9 14.0 149 East Rim Divide 7930 10.1 5.8 174 12.5 6.8 184 Grand Targhee 9260 27.1 21.3 127 25.4 18.0 141 Granite Creek 6770 14.8 8.8 168 20.5 11.9 172 Grassy Lake 7265 22.0 16.9 130 33.1 21.0 158 Gros Ventre Summit 8750 9.3 7.5 124 13.6 7.4 184 Gunsight Pass 9820 10.1 7.5 135 14.2 7.9 180 Lewis Lake Divide 7850 18.9 16.8 112 30.8 20.5 150 Phillips Bench 8200 17.2 15.1 114 26.3 16.1 163 Salt River Summit 7760 11.1 6.5 171 16.5 9.4 176 Snake River Station 6920 13.7 9.2 149 21.7 13.6 160 Spring Creek Divide 9000 19.2 12.3 156 22.6 13.7 165 Thumb Divide 7980 9.9 8.1 122 15.4 10.8 143 Togwotee Pass 9580 17.6 13.1 134 21.3 14.2 150 Two Ocean Plateau 9240 23.0 15.6 147 23.6 15.5 152 Willow Creek 8380 18.5 14.5 128 -M 19.2 * Younts Peak 8350 12.2 8.6 142 16.5 9.5 174 ----- ----- Basin Index (%) 135 159 MADISON-GALLATIN Black Bear 8170 21.1 21.1 100 30.2 21.8 139 Canyon 7870 9.1 7.3 125 15.3 9.5 161 Madison Plateau 7750 12.6 12.7 99 21.9 15.3 143 West Yellowstone 6700 7.1 6.4 111 14.6 8.5 172 Whiskey Creek 6800 8.0 8.5 94 16.0 11.8 136 ----- ----- Basin Index (%) 103 146 YELLOWSTONE Beartooth Lake 9360 15.2 12.5 122 11.6 11.4 102 Burnt Mtn 5880 4.5 2.2 205 8.4 7.4 114 Canyon 7870 9.1 7.3 125 15.3 9.5 161 Cole Creek 7850 6.1 7.3 84 5.2 7.1 73 Evening Star 9200 18.2 14.2 128 24.6 16.0 154 Fisher Creek 9100 17.8 18.6 96 23.0 18.4 125 Northeast Entrance 7350 6.4 5.5 116 11.6 7.4 157 Parker Peak 9400 16.0 11.7 137 18.8 10.2 184 Sylvan Lake 8420 12.4 11.3 110 22.9 13.3 172 Thumb Divide 7980 9.9 8.1 122 15.4 10.8 143 Two Ocean Plateau 9240 23.0 15.6 147 23.6 15.5 152 White Mill 8700 14.7 13.0 113 17.9 13.8 130 Wolverine 7650 -M 6.0 * -M 7.4 * ----- ----- Basin Index (%) 120 141 WIND RIVER Burroughs Creek 8750 11.9 -M * 14.6 -M * Castle Creek 8400 6.6 -M * 8.8 -M * Cold Springs 9630 6.0 4.1 146 8.6 5.7 151 Deer Park 9700 17.3 7.4 234 20.8 11.0 189 Hobbs Park 10100 11.9 7.4 161 11.9 7.1 168 Kirwin 9550 9.5 5.3 179 12.6 6.7 188 Little Warm 9370 6.6 5.7 116 11.7 7.4 158 Owl Creek 8975 3.6 3.0 120 5.2 3.3 158 South Pass 9040 16.4 7.9 208 16.2 9.8 165 St. Lawrence Alt 8620 3.2 3.5 91 7.2 4.9 147 Togwotee Pass 9580 17.6 13.1 134 21.3 14.2 150 Townsend Creek 8700 6.3 4.4 143 9.2 6.6 139 ----- ----- Basin Index (%) 159 163 BIGHORN BASIN Bald Mtn. 9380 11.8 10.0 118 10.7 9.7 110 Bear Trap Meadow 8200 2.9 3.0 97 4.5 4.7 96 Bone Springs Div 9350 9.1 8.9 102 9.8 8.6 114 Grave Springs 8550 3.4 4.4 77 4.6 5.9 78 Kirwin 9550 9.5 5.3 179 12.6 6.7 188 Marquette 8760 4.6 -M * 8.1 -M * Middle Powder 7760 4.2 6.0 70 5.0 6.8 74 Owl Creek 8975 3.6 3.0 120 5.2 3.3 158 Powder River Pass 9480 3.4 5.8 59 6.5 7.1 92 Shell Creek 9580 9.7 8.4 115 7.9 7.9 100 Timber Creek 7950 3.4 2.7 126 4.7 4.3 109 ----- ----- Basin Index (%) 106 110 SHOSHONE RIVER Blackwater 9780 19.2 13.0 148 22.9 11.9 192 Evening Star 9200 18.2 14.2 128 24.6 16.0 154 Marquette 8760 4.6 -M * 8.1 -M * Sylvan Road 7120 9.1 6.9 132 19.3 10.7 180 Younts Peak 8350 12.2 8.6 142 16.5 9.5 174 ----- ----- Basin Index (%) 137 173 POWDER RIVER Bear Trap Meadow 8200 2.9 3.0 97 4.5 4.7 96 Cloud Peak Reservoir 9860 6.8 7.4 92 8.9 7.2 124 Grave Springs 8550 3.4 4.4 77 4.6 5.9 78 Hansen Sawmill 8360 4.4 3.5 126 6.2 4.6 135 Middle Powder 7760 4.2 6.0 70 5.0 6.8 74 Powder River Pass 9480 3.4 5.8 59 6.5 7.1 92 Soldier Park 8720 7.1 -M * 6.5 -M * ----- ----- Basin Index (%) 83 98 TONGUE RIVER Big Goose 7990 5.1 4.4 116 6.1 6.0 102 Bone Springs Div 9350 9.1 8.9 102 9.8 8.6 114 Burgess Junction 7880 5.2 6.0 87 6.6 6.9 96 Dome Lake 8880 6.3 6.2 102 7.8 7.6 103 Little Goose 8870 5.4 -M * 7.7 -M * Sucker Creek 8880 6.1 6.4 95 6.7 7.8 86 Tie Creek 6870 3.7 2.9 128 6.8 6.6 103 ----- ----- Basin Index (%) 102 101 BELLE FOURCHE Cole Canyon 5910 3.2 2.8 114 4.2 5.2 81 ----- ----- Basin Index (%) 114 81 CHEYENNE RIVER BASIN Blind Park 6890 3.7 4.1 90 4.9 7.1 69 North Rapid Creek 6130 4.0 3.8 105 4.4 5.8 76 ----- ----- Basin Index (%) 97 72 UPPER N. PLATTE Arapaho Ridge 10960 17.6 11.2 157 18.6 12.9 144 Blackhall Mtn 9820 23.3 -M * 24.5 -M * Columbine 9160 17.5 12.6 139 18.8 14.4 131 Divide Peak 8880 11.9 10.7 111 14.5 12.2 119 Joe Wright 10120 13.6 11.5 118 19.6 14.3 137 Laprele Creek 8375 6.3 5.0 126 6.1 6.8 90 Med Bow 10500 24.4 -M * 23.4 -M * North French Creek 10130 15.3 14.2 108 16.9 14.9 113 Never Summer 10280 -M 10.7 * -M -M * Old Battle 10000 22.6 15.9 142 24.7 19.9 124 Rawah 9020 9.3 5.5 169 11.8 8.5 139 Sage Creek Basin 7850 9.6 7.3 132 10.2 8.7 117 Sand Lake 10050 18.1 14.6 124 17.5 13.5 130 South Brush Creek 8440 6.4 6.2 103 7.6 8.6 88 Tower 10500 27.4 23.2 118 30.4 22.5 135 Webber Springs 9250 18.0 12.1 149 21.9 15.1 145 Willow Creek Pass 9540 12.4 6.3 197 13.1 7.5 175 Zirkel 9340 25.4 15.9 160 26.3 16.8 157 ----- ----- Basin Index (%) 134 131 SWEETWATER Deer Park 9700 17.3 7.4 234 20.8 11.0 189 Larsen Creek 9000 11.5 6.2 185 15.0 -M * South Pass 9040 16.4 7.9 208 16.2 9.8 165 ----- ----- Basin Index (%) 210 178 LOWER N. PLATTE Casper Mtn. 7900 5.8 6.8 85 6.1 8.3 73 Laprele Creek 8375 6.3 5.0 126 6.1 6.8 90 Reno Hill 8400 -M 6.7 * -M 8.1 * Windy Peak 7900 5.0 3.7 135 5.7 5.8 98 ----- ----- Basin Index (%) 110 86 LARAMIE RIVER Brooklyn Lake 10240 15.1 11.0 137 14.1 11.3 125 Cinnabar Park 9574 12.4 11.7 106 15.2 14.4 106 Crow Creek 8330 4.0 5.2 77 5.7 6.0 95 Deadman Hill 10220 13.6 8.4 162 13.5 9.2 147 Rawah 9020 9.3 5.5 169 11.8 8.5 139 Roach 9700 11.6 9.0 129 13.7 10.6 129 ----- ----- Basin Index (%) 130 123 S. PLATTE Black Mountain 8920 7.0 -M * 8.2 -M * Crow Creek 8330 4.0 5.2 77 5.7 6.0 95 Deadman Hill 10220 13.6 8.4 162 13.5 9.2 147 ----- ----- Basin Index (%) 129 126 LITTLE SNAKE RIVER Battle Mountain 7440 8.0 5.7 140 -M 8.7 * Divide Peak 8880 11.9 10.7 111 14.5 12.2 119 Elk River 8700 14.6 9.5 154 14.8 11.2 132 Little Snake River 8915 20.5 12.5 164 26.2 18.0 146 Old Battle 10000 22.6 15.9 142 24.7 19.9 124 Sage Creek Basin 7850 9.6 7.3 132 10.2 8.7 117 Sandstone RS 8150 9.9 7.0 141 10.6 10.6 100 Whiskey Park 8950 17.6 13.9 127 20.6 15.5 133 ----- ----- Basin Index (%) 139 127 UPPER GREEN RIVER Big Sandy Opening 9080 12.4 7.0 177 14.8 7.5 197 Blind Bull Sum 8650 21.5 12.4 173 -M 11.5 * East Rim Divide 7930 10.1 5.8 174 12.5 6.8 184 Elkhart Park G.S. 9400 9.3 6.6 141 14.7 7.7 191 Gros Ventre Summit 8750 9.3 7.5 124 13.6 7.4 184 Gunsight Pass 9820 10.1 7.5 135 14.2 7.9 180 Kendall R.S. 7740 11.8 6.6 179 16.1 8.2 196 Loomis Park 8240 14.2 8.0 178 19.4 10.0 194 New Fork Lake 8340 9.4 5.8 162 9.9 6.3 157 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 11.3 6.5 174 15.9 8.2 194 Spring Creek Divide 9000 19.2 12.3 156 22.6 13.7 165 Triple Peak 8500 20.8 11.5 181 -M 14.1 * ----- ----- Basin Index (%) 163 184 LOWER GREEN RIVER Blacks Fork Jct 8870 7.5 -M * 9.7 -M * Buck Pasture 9700 11.9 -M * 14.7 -M * EF Blacks Fork GS 9360 8.6 -M * 9.3 -M * Hams Fork 7840 10.1 5.9 171 12.2 6.5 188 Hewinta 9519 8.0 5.0 160 10.3 7.7 134 Hickerson Park 9145 5.5 3.2 172 5.7 5.6 102 Hole-in-Rock 9150 4.5 3.5 129 6.4 5.3 121 Indian Creek 9425 19.9 12.7 157 -M 12.4 * Kelley R.S. 8180 13.8 7.6 182 18.9 10.3 183 Spirit Lk 10235 8.3 -M * 10.0 -M * Steel Creek Park 10200 10.9 7.4 147 12.6 8.9 142 ----- ----- Basin Index (%) 160 149 UPPER BEAR RIVER Bear River RS 8777 8.8 -M * 10.8 -M * Bug Lake 7950 19.1 8.8 217 18.5 11.0 168 Burts Miller Ranch 8000 4.8 -M * 5.4 -M * Chalk Creek #1 8993 19.5 11.8 165 -M 13.8 * Hayden Fork 9212 13.7 7.4 185 18.3 11.6 158 Kelley R.S. 8180 13.8 7.6 182 18.9 10.3 183 Lily Lake 9156 10.3 6.6 156 12.0 9.6 125 Monte Cristo 8960 18.7 13.8 136 -M 14.5 * Salt River Summit 7760 11.1 6.5 171 16.5 9.4 176 ----- ----- Basin Index (%) 170 162 ----------------------------------------------------------------------------- -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.