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 26 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.5 10.4 149 23.4 13.3 176 Black Bear 8170 22.4 22.8 98 31.5 23.8 132 Blind Bull Sum 8650 22.0 13.1 168 -M 12.3 * Cottonwood Creek 7670 16.3 11.9 137 22.5 15.1 149 East Rim Divide 7930 10.9 6.6 165 13.1 7.4 177 Grand Targhee 9260 28.3 22.8 124 26.1 19.7 132 Granite Creek 6770 15.8 9.6 165 20.9 13.0 161 Grassy Lake 7265 23.4 18.7 125 34.6 22.8 152 Gros Ventre Summit 8750 9.6 8.0 120 13.7 7.8 176 Gunsight Pass 9820 10.2 7.9 129 14.1 8.5 166 Lewis Lake Divide 7850 19.9 18.5 108 31.5 22.0 143 Phillips Bench 8200 18.7 15.9 118 26.8 17.3 155 Salt River Summit 7760 12.2 7.3 167 17.3 10.1 171 Snake River Station 6920 14.1 9.8 144 23.2 14.7 158 Spring Creek Divide 9000 20.3 13.3 153 22.9 14.7 156 Thumb Divide 7980 10.3 9.1 113 15.7 11.6 135 Togwotee Pass 9580 18.2 14.0 130 21.8 15.2 143 Two Ocean Plateau 9240 23.4 16.2 144 23.7 16.5 144 Willow Creek 8380 19.9 16.4 121 30.8 20.7 149 Younts Peak 8350 12.4 9.0 138 16.7 10.1 165 ----- ----- Basin Index (%) 132 151 MADISON-GALLATIN Black Bear 8170 22.4 22.8 98 31.5 23.8 132 Canyon 7870 9.3 7.8 119 15.5 10.2 152 Madison Plateau 7750 13.6 13.8 99 22.7 16.5 138 West Yellowstone 6700 7.7 6.8 113 15.1 9.1 166 Whiskey Creek 6800 8.8 9.3 95 16.6 12.6 132 ----- ----- Basin Index (%) 102 140 YELLOWSTONE Beartooth Lake 9360 15.3 13.2 116 11.7 12.2 96 Burnt Mtn 5880 4.5 2.4 188 8.5 7.6 112 Canyon 7870 9.3 7.8 119 15.5 10.2 152 Cole Creek 7850 6.1 7.8 78 5.0 7.3 68 Evening Star 9200 18.6 15.1 123 24.8 17.2 144 Fisher Creek 9100 18.2 19.8 92 23.3 19.8 118 Northeast Entrance 7350 6.5 6.1 107 11.7 7.9 148 Parker Peak 9400 16.2 12.2 133 19.0 10.9 174 Sylvan Lake 8420 12.9 12.3 105 23.3 14.2 164 Thumb Divide 7980 10.3 9.1 113 15.7 11.6 135 Two Ocean Plateau 9240 23.4 16.2 144 23.7 16.5 144 White Mill 8700 15.1 13.8 109 18.0 14.7 122 Wolverine 7650 -M 6.6 * -M 7.9 * ----- ----- Basin Index (%) 115 133 WIND RIVER Burroughs Creek 8750 12.1 -M * 14.7 -M * Castle Creek 8400 6.8 -M * 8.9 -M * Cold Springs 9630 6.2 4.2 148 8.6 6.0 143 Deer Park 9700 17.9 8.4 213 20.9 11.8 177 Hobbs Park 10100 12.3 7.8 158 12.1 7.5 161 Kirwin 9550 9.7 5.5 176 12.6 7.0 180 Little Warm 9370 6.8 6.0 113 11.8 7.8 151 Owl Creek 8975 3.9 3.1 126 5.4 3.4 159 South Pass 9040 16.9 8.3 204 16.3 10.4 157 St. Lawrence Alt 8620 3.5 3.9 90 7.6 5.1 149 Togwotee Pass 9580 18.2 14.0 130 21.8 15.2 143 Townsend Creek 8700 6.8 4.8 142 9.5 6.8 140 ----- ----- Basin Index (%) 155 156 BIGHORN BASIN Bald Mtn. 9380 12.1 10.4 116 10.6 10.3 103 Bear Trap Meadow 8200 3.1 3.3 94 4.5 5.0 90 Bone Springs Div 9350 9.5 9.5 100 9.7 9.2 105 Grave Springs 8550 3.7 4.8 77 4.6 6.2 74 Kirwin 9550 9.7 5.5 176 12.6 7.0 180 Marquette 8760 4.8 -M * 8.2 -M * Middle Powder 7760 4.6 6.1 75 5.1 7.1 72 Owl Creek 8975 3.9 3.1 126 5.4 3.4 159 Powder River Pass 9480 3.7 6.0 62 6.5 7.6 86 Shell Creek 9580 9.8 8.8 111 8.1 8.4 96 Timber Creek 7950 3.6 3.0 120 4.9 4.3 114 ----- ----- Basin Index (%) 105 105 SHOSHONE RIVER Blackwater 9780 19.3 13.8 140 23.0 12.7 181 Evening Star 9200 18.6 15.1 123 24.8 17.2 144 Marquette 8760 4.8 -M * 8.2 -M * Sylvan Road 7120 9.3 7.5 124 19.5 11.4 171 Younts Peak 8350 12.4 9.0 138 16.7 10.1 165 ----- ----- Basin Index (%) 131 163 POWDER RIVER Bear Trap Meadow 8200 3.1 3.3 94 4.5 5.0 90 Cloud Peak Reservoir 9860 7.1 7.9 90 9.0 7.6 118 Grave Springs 8550 3.7 4.8 77 4.6 6.2 74 Hansen Sawmill 8360 4.7 3.9 121 6.5 4.8 135 Middle Powder 7760 4.6 6.1 75 5.1 7.1 72 Powder River Pass 9480 3.7 6.0 62 6.5 7.6 86 Soldier Park 8720 7.3 -M * 6.7 -M * ----- ----- Basin Index (%) 84 95 TONGUE RIVER Big Goose 7990 5.1 4.6 111 6.2 6.2 100 Bone Springs Div 9350 9.5 9.5 100 9.7 9.2 105 Burgess Junction 7880 5.5 6.4 86 6.7 7.2 93 Dome Lake 8880 6.3 6.5 97 7.8 8.0 98 Little Goose 8870 5.6 -M * 7.7 -M * Sucker Creek 8880 6.3 6.9 91 6.8 8.3 82 Tie Creek 6870 3.8 3.1 123 6.9 6.8 101 ----- ----- Basin Index (%) 99 96 BELLE FOURCHE Cole Canyon 5910 3.3 3.1 106 4.2 5.5 76 ----- ----- Basin Index (%) 106 76 CHEYENNE RIVER BASIN Blind Park 6890 3.9 4.2 93 5.0 7.5 67 North Rapid Creek 6130 4.2 4.0 105 4.4 6.0 73 ----- ----- Basin Index (%) 99 70 UPPER N. PLATTE Arapaho Ridge 10960 18.6 12.2 152 19.4 13.5 144 Blackhall Mtn 9820 25.2 -M * 26.5 -M * Columbine 9160 18.9 13.9 136 20.5 15.6 131 Divide Peak 8880 13.2 11.6 114 15.5 13.1 118 Joe Wright 10120 14.4 12.5 115 19.0 15.3 124 Laprele Creek 8375 7.0 5.3 132 6.7 7.2 93 Med Bow 10500 26.0 -M * 24.8 -M * North French Creek 10130 16.6 15.3 108 18.2 16.1 113 Never Summer 10280 -M 11.5 * -M -M * Old Battle 10000 24.8 18.2 136 26.2 21.4 122 Rawah 9020 10.0 5.9 169 12.3 8.9 138 Sage Creek Basin 7850 11.0 7.8 141 11.6 9.3 125 Sand Lake 10050 19.1 15.8 121 18.3 14.5 126 South Brush Creek 8440 7.0 7.0 100 8.1 9.1 89 Tower 10500 30.0 25.9 116 31.2 24.3 128 Webber Springs 9250 19.4 12.9 150 23.0 16.3 141 Willow Creek Pass 9540 13.1 7.0 187 13.9 8.0 174 Zirkel 9340 27.1 17.2 158 32.5 17.7 184 ----- ----- Basin Index (%) 133 131 SWEETWATER Deer Park 9700 17.9 8.4 213 20.9 11.8 177 Larsen Creek 9000 11.9 6.8 175 15.4 -M * South Pass 9040 16.9 8.3 204 16.3 10.4 157 ----- ----- Basin Index (%) 199 168 LOWER N. PLATTE Casper Mtn. 7900 6.4 7.3 88 6.7 8.7 77 Laprele Creek 8375 7.0 5.3 132 6.7 7.2 93 Reno Hill 8400 -M 7.5 * -M 8.6 * Windy Peak 7900 5.7 4.0 142 6.3 6.2 102 ----- ----- Basin Index (%) 115 89 LARAMIE RIVER Brooklyn Lake 10240 16.0 11.7 137 14.7 12.3 120 Cinnabar Park 9574 13.1 12.7 103 15.8 15.2 104 Crow Creek 8330 4.2 5.6 75 5.9 6.3 94 Deadman Hill 10220 14.0 9.3 151 13.7 9.8 140 Rawah 9020 10.0 5.9 169 12.3 8.9 138 Roach 9700 12.3 9.6 128 14.5 11.4 127 ----- ----- Basin Index (%) 127 120 S. PLATTE Black Mountain 8920 7.0 -M * 8.3 -M * Crow Creek 8330 4.2 5.6 75 5.9 6.3 94 Deadman Hill 10220 14.0 9.3 151 13.7 9.8 140 ----- ----- Basin Index (%) 122 122 LITTLE SNAKE RIVER Battle Mountain 7440 8.8 6.6 133 -M 9.3 * Divide Peak 8880 13.2 11.6 114 15.5 13.1 118 Elk River 8700 15.7 10.3 152 15.6 12.2 128 Little Snake River 8915 22.6 14.4 157 28.3 19.7 144 Old Battle 10000 24.8 18.2 136 26.2 21.4 122 Sage Creek Basin 7850 11.0 7.8 141 11.6 9.3 125 Sandstone RS 8150 10.7 7.5 143 11.5 11.4 101 Whiskey Park 8950 19.3 15.0 129 22.0 17.0 129 ----- ----- Basin Index (%) 138 126 UPPER GREEN RIVER Big Sandy Opening 9080 12.9 7.5 172 15.5 8.0 194 Blind Bull Sum 8650 22.0 13.1 168 -M 12.3 * East Rim Divide 7930 10.9 6.6 165 13.1 7.4 177 Elkhart Park G.S. 9400 9.7 7.1 137 15.2 8.1 188 Gros Ventre Summit 8750 9.6 8.0 120 13.7 7.8 176 Gunsight Pass 9820 10.2 7.9 129 14.1 8.5 166 Kendall R.S. 7740 12.4 7.5 165 16.6 8.8 189 Loomis Park 8240 15.0 9.2 163 20.1 10.8 186 New Fork Lake 8340 10.1 6.5 155 10.3 6.8 151 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 12.1 7.1 170 16.8 8.8 191 Spring Creek Divide 9000 20.3 13.3 153 22.9 14.7 156 Triple Peak 8500 22.0 12.1 182 23.3 15.2 153 ----- ----- Basin Index (%) 158 173 LOWER GREEN RIVER Blacks Fork Jct 8870 8.2 -M * 10.5 -M * Buck Pasture 9700 13.5 -M * 16.1 -M * EF Blacks Fork GS 9360 9.2 -M * 9.5 -M * Hams Fork 7840 11.1 6.8 163 13.1 7.0 187 Hewinta 9519 8.7 5.2 167 10.9 8.2 133 Hickerson Park 9145 5.9 3.5 169 6.1 5.9 103 Hole-in-Rock 9150 4.8 3.8 126 6.6 5.5 120 Indian Creek 9425 21.2 13.8 154 -M 13.4 * Kelley R.S. 8180 15.2 8.6 177 20.3 11.0 185 Spirit Lk 10235 9.6 -M * 11.1 -M * Steel Creek Park 10200 11.6 8.2 141 13.3 9.5 140 ----- ----- Basin Index (%) 157 149 UPPER BEAR RIVER Bear River RS 8777 9.8 -M * 11.7 -M * Bug Lake 7950 21.2 9.7 219 18.8 11.9 158 Burts Miller Ranch 8000 5.6 -M * 5.9 -M * Chalk Creek #1 8993 21.8 12.8 170 -M 15.0 * Hayden Fork 9212 15.7 8.1 194 -M 12.5 * Kelley R.S. 8180 15.2 8.6 177 20.3 11.0 185 Lily Lake 9156 10.8 7.1 152 13.0 10.2 127 Monte Cristo 8960 21.8 14.8 147 -M 15.6 * Salt River Summit 7760 12.2 7.3 167 17.3 10.1 171 ----- ----- Basin Index (%) 174 161* ----------------------------------------------------------------------------- -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.