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 25 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.6 10.3 151 23.4 13.2 177 Black Bear 8170 22.4 22.7 99 31.5 23.6 133 Blind Bull Sum 8650 22.1 13.0 170 -M 12.2 * Cottonwood Creek 7670 16.3 11.8 138 22.5 14.9 151 East Rim Divide 7930 10.9 6.5 168 13.1 7.3 179 Grand Targhee 9260 28.4 22.5 126 26.2 19.5 134 Granite Creek 6770 15.9 9.4 169 21.0 12.9 163 Grassy Lake 7265 23.3 18.5 126 34.6 22.6 153 Gros Ventre Summit 8750 9.7 7.9 123 13.8 7.8 177 Gunsight Pass 9820 10.2 7.9 129 14.2 8.4 169 Lewis Lake Divide 7850 20.0 18.3 109 31.6 21.9 144 Phillips Bench 8200 18.7 15.8 118 26.7 17.2 155 Salt River Summit 7760 12.2 7.3 167 17.3 10.0 173 Snake River Station 6920 14.1 9.7 145 23.2 14.6 159 Spring Creek Divide 9000 20.3 13.1 155 22.9 14.6 157 Thumb Divide 7980 10.4 8.9 117 15.8 11.6 136 Togwotee Pass 9580 18.2 13.8 132 21.9 15.1 145 Two Ocean Plateau 9240 23.4 16.1 145 23.7 16.4 145 Willow Creek 8380 19.9 16.2 123 30.8 20.5 150 Younts Peak 8350 12.3 8.9 138 16.5 10.0 165 ----- ----- Basin Index (%) 133 153 MADISON-GALLATIN Black Bear 8170 22.4 22.7 99 31.5 23.6 133 Canyon 7870 9.3 7.7 121 15.5 10.1 153 Madison Plateau 7750 13.5 13.7 99 22.7 16.4 138 West Yellowstone 6700 7.7 6.7 115 15.1 9.0 168 Whiskey Creek 6800 8.8 9.2 96 16.5 12.6 131 ----- ----- Basin Index (%) 103 141 YELLOWSTONE Beartooth Lake 9360 15.3 13.1 117 11.6 12.1 96 Burnt Mtn 5880 4.5 2.4 188 8.5 7.6 112 Canyon 7870 9.3 7.7 121 15.5 10.1 153 Cole Creek 7850 6.1 7.8 78 5.0 7.3 68 Evening Star 9200 18.5 14.9 124 24.8 17.0 146 Fisher Creek 9100 18.1 19.7 92 23.2 19.6 118 Northeast Entrance 7350 6.5 6.0 108 11.7 7.9 148 Parker Peak 9400 16.1 12.2 132 19.0 10.8 176 Sylvan Lake 8420 12.8 12.2 105 23.3 14.1 165 Thumb Divide 7980 10.4 8.9 117 15.8 11.6 136 Two Ocean Plateau 9240 23.4 16.1 145 23.7 16.4 145 White Mill 8700 15.1 13.7 110 18.0 14.6 123 Wolverine 7650 -M 6.5 * -M 7.8 * ----- ----- Basin Index (%) 116 134 WIND RIVER Burroughs Creek 8750 12.1 -M * 14.5 -M * Castle Creek 8400 6.7 -M * 8.8 -M * Cold Springs 9630 6.1 4.2 145 8.4 5.9 142 Deer Park 9700 17.9 8.3 216 20.9 11.7 179 Hobbs Park 10100 12.1 7.8 155 12.0 7.4 162 Kirwin 9550 9.6 5.5 175 12.5 7.0 179 Little Warm 9370 6.5 5.9 110 11.6 7.7 151 Owl Creek 8975 3.8 3.0 127 5.3 3.4 156 South Pass 9040 16.9 8.2 206 16.2 10.4 156 St. Lawrence Alt 8620 3.5 3.9 90 7.6 5.1 149 Togwotee Pass 9580 18.2 13.8 132 21.9 15.1 145 Townsend Creek 8700 6.7 4.8 140 9.3 6.8 137 ----- ----- Basin Index (%) 155 156 BIGHORN BASIN Bald Mtn. 9380 12.1 10.4 116 10.4 10.2 102 Bear Trap Meadow 8200 3.0 3.2 94 4.5 5.0 90 Bone Springs Div 9350 9.4 9.5 99 9.6 9.1 105 Grave Springs 8550 3.7 4.8 77 4.5 6.2 73 Kirwin 9550 9.6 5.5 175 12.5 7.0 179 Marquette 8760 4.8 -M * 8.2 -M * Middle Powder 7760 4.6 6.1 75 4.8 7.0 69 Owl Creek 8975 3.8 3.0 127 5.3 3.4 156 Powder River Pass 9480 3.7 6.0 62 6.3 7.5 84 Shell Creek 9580 9.7 8.8 110 7.9 8.3 95 Timber Creek 7950 3.6 2.9 124 4.9 4.3 114 ----- ----- Basin Index (%) 105 104 SHOSHONE RIVER Blackwater 9780 19.3 13.6 142 23.0 12.6 183 Evening Star 9200 18.5 14.9 124 24.8 17.0 146 Marquette 8760 4.8 -M * 8.2 -M * Sylvan Road 7120 9.3 7.4 126 19.4 11.3 172 Younts Peak 8350 12.3 8.9 138 16.5 10.0 165 ----- ----- Basin Index (%) 133 164 POWDER RIVER Bear Trap Meadow 8200 3.0 3.2 94 4.5 5.0 90 Cloud Peak Reservoir 9860 7.1 7.8 91 8.8 7.6 116 Grave Springs 8550 3.7 4.8 77 4.5 6.2 73 Hansen Sawmill 8360 4.7 3.9 121 6.5 4.8 135 Middle Powder 7760 4.6 6.1 75 4.8 7.0 69 Powder River Pass 9480 3.7 6.0 62 6.3 7.5 84 Soldier Park 8720 7.2 -M * 6.6 -M * ----- ----- Basin Index (%) 84 93 TONGUE RIVER Big Goose 7990 5.1 4.6 111 6.1 6.2 98 Bone Springs Div 9350 9.4 9.5 99 9.6 9.1 105 Burgess Junction 7880 5.4 6.4 84 6.5 7.2 90 Dome Lake 8880 6.3 6.5 97 7.7 8.0 96 Little Goose 8870 5.6 -M * 7.7 -M * Sucker Creek 8880 6.3 6.8 93 6.5 8.2 79 Tie Creek 6870 3.7 3.1 119 6.8 6.8 100 ----- ----- Basin Index (%) 98 95 BELLE FOURCHE Cole Canyon 5910 3.2 3.1 103 4.1 5.5 75 ----- ----- Basin Index (%) 103 75 CHEYENNE RIVER BASIN Blind Park 6890 3.9 4.2 93 5.0 7.4 68 North Rapid Creek 6130 4.1 4.0 102 4.3 6.0 72 ----- ----- Basin Index (%) 98 69 UPPER N. PLATTE Arapaho Ridge 10960 18.6 12.0 155 19.5 13.4 146 Blackhall Mtn 9820 24.9 -M * 26.4 -M * Columbine 9160 18.7 13.7 136 20.4 15.4 132 Divide Peak 8880 13.2 11.5 115 15.5 13.0 119 Joe Wright 10120 14.4 12.4 116 19.7 15.2 130 Laprele Creek 8375 7.0 5.3 132 6.7 7.2 93 Med Bow 10500 25.9 -M * 24.8 -M * North French Creek 10130 16.6 15.2 109 18.2 15.9 114 Never Summer 10280 -M 11.4 * -M -M * Old Battle 10000 24.8 17.9 139 26.2 21.2 124 Rawah 9020 9.9 5.9 168 12.3 8.8 140 Sage Creek Basin 7850 11.0 7.7 143 11.6 9.2 126 Sand Lake 10050 19.1 15.6 122 18.2 14.3 127 South Brush Creek 8440 6.9 6.9 100 8.0 9.1 88 Tower 10500 29.5 25.6 115 31.2 24.0 130 Webber Springs 9250 19.4 12.8 152 22.9 16.1 142 Willow Creek Pass 9540 13.1 6.9 190 14.0 7.9 177 Zirkel 9340 27.1 17.0 159 32.5 17.6 185 ----- ----- Basin Index (%) 134 133 SWEETWATER Deer Park 9700 17.9 8.3 216 20.9 11.7 179 Larsen Creek 9000 11.9 6.8 175 15.3 -M * South Pass 9040 16.9 8.2 206 16.2 10.4 156 ----- ----- Basin Index (%) 200 168 LOWER N. PLATTE Casper Mtn. 7900 6.5 7.2 90 6.6 8.7 76 Laprele Creek 8375 7.0 5.3 132 6.7 7.2 93 Reno Hill 8400 -M 7.4 * -M 8.5 * Windy Peak 7900 5.7 4.0 142 6.2 6.1 102 ----- ----- Basin Index (%) 116 89 LARAMIE RIVER Brooklyn Lake 10240 16.0 11.6 138 14.7 12.2 120 Cinnabar Park 9574 13.0 12.5 104 15.8 15.1 105 Crow Creek 8330 4.2 5.6 75 5.9 6.3 94 Deadman Hill 10220 13.9 9.1 153 13.8 9.7 142 Rawah 9020 9.9 5.9 168 12.3 8.8 140 Roach 9700 12.3 9.6 128 14.5 11.2 129 ----- ----- Basin Index (%) 128 122 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 13.9 9.1 153 13.8 9.7 142 ----- ----- Basin Index (%) 123 123 LITTLE SNAKE RIVER Battle Mountain 7440 8.7 6.6 132 -M 9.2 * Divide Peak 8880 13.2 11.5 115 15.5 13.0 119 Elk River 8700 15.7 10.2 154 15.6 12.0 130 Little Snake River 8915 22.5 14.1 160 28.2 19.5 145 Old Battle 10000 24.8 17.9 139 26.2 21.2 124 Sage Creek Basin 7850 11.0 7.7 143 11.6 9.2 126 Sandstone RS 8150 10.7 7.5 143 11.2 11.3 99 Whiskey Park 8950 19.2 15.0 128 22.0 16.7 132 ----- ----- Basin Index (%) 139 127 UPPER GREEN RIVER Big Sandy Opening 9080 13.0 7.4 176 15.5 7.9 196 Blind Bull Sum 8650 22.1 13.0 170 -M 12.2 * East Rim Divide 7930 10.9 6.5 168 13.1 7.3 179 Elkhart Park G.S. 9400 9.8 7.1 138 15.2 8.1 188 Gros Ventre Summit 8750 9.7 7.9 123 13.8 7.8 177 Gunsight Pass 9820 10.2 7.9 129 14.2 8.4 169 Kendall R.S. 7740 12.4 7.3 170 16.7 8.7 192 Loomis Park 8240 15.0 9.1 165 20.1 10.6 190 New Fork Lake 8340 10.1 6.5 155 10.3 6.7 154 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 12.1 7.0 173 16.8 8.7 193 Spring Creek Divide 9000 20.3 13.1 155 22.9 14.6 157 Triple Peak 8500 22.0 12.0 183 23.3 15.1 154 ----- ----- Basin Index (%) 160 175 LOWER GREEN RIVER Blacks Fork Jct 8870 8.2 -M * 10.4 -M * Buck Pasture 9700 13.4 -M * 16.1 -M * EF Blacks Fork GS 9360 9.2 -M * 9.6 -M * Hams Fork 7840 11.2 6.8 165 13.2 6.9 191 Hewinta 9519 8.5 5.2 163 10.8 8.2 132 Hickerson Park 9145 5.8 3.4 171 6.0 5.9 102 Hole-in-Rock 9150 4.8 3.8 126 6.6 5.5 120 Indian Creek 9425 21.2 13.7 155 -M 13.2 * Kelley R.S. 8180 15.2 8.5 179 20.4 10.9 187 Spirit Lk 10235 9.5 -M * 11.1 -M * Steel Creek Park 10200 11.6 8.0 145 13.3 9.4 141 ----- ----- Basin Index (%) 159 150 UPPER BEAR RIVER Bear River RS 8777 9.8 -M * 11.5 -M * Bug Lake 7950 -M 9.6 * -M 11.7 * Burts Miller Ranch 8000 5.6 -M * 5.8 -M * Chalk Creek #1 8993 21.7 12.6 172 -M 14.8 * Hayden Fork 9212 15.6 8.0 195 -M 12.4 * Kelley R.S. 8180 15.2 8.5 179 20.4 10.9 187 Lily Lake 9156 10.7 7.0 153 12.7 10.1 126 Monte Cristo 8960 21.7 14.6 149 -M 15.4 * Salt River Summit 7760 12.2 7.3 167 17.3 10.0 173 ----- ----- Basin Index (%) 167 163* ----------------------------------------------------------------------------- -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.