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 TUESDAY: JANUARY 31 , 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 10.8 144 23.5 14.0 168 Black Bear 8170 22.6 23.2 97 31.7 24.8 128 Blind Bull Sum 8650 22.7 13.7 166 16.1 12.8 126 Cottonwood Creek 7670 16.4 12.7 129 22.7 15.8 144 East Rim Divide 7930 11.1 6.8 163 13.3 7.7 173 Grand Targhee 9260 28.6 23.5 122 26.5 20.5 129 Granite Creek 6770 15.9 10.4 153 21.0 13.6 154 Grassy Lake 7265 23.6 20.0 118 34.9 23.8 147 Gros Ventre Summit 8750 9.6 8.3 116 14.0 8.2 171 Gunsight Pass 9820 10.4 8.2 127 14.4 8.8 164 Lewis Lake Divide 7850 20.0 19.8 101 31.8 23.1 138 Phillips Bench 8200 18.7 15.9 118 28.4 18.1 157 Salt River Summit 7760 12.5 7.7 162 17.9 10.6 169 Snake River Station 6920 14.2 10.7 133 23.3 15.4 151 Spring Creek Divide 9000 20.6 14.3 144 23.2 15.3 152 Thumb Divide 7980 10.5 9.6 109 15.8 12.1 131 Togwotee Pass 9580 18.4 14.9 123 22.2 15.8 141 Two Ocean Plateau 9240 -M 17.4 * -M 17.2 * Willow Creek 8380 20.1 17.0 118 31.1 21.5 145 Younts Peak 8350 12.6 9.5 133 16.9 10.4 162 ----- ----- Basin Index (%) 126 147 MADISON-GALLATIN Black Bear 8170 22.6 23.2 97 31.7 24.8 128 Canyon 7870 9.4 8.1 116 15.8 10.7 148 Madison Plateau 7750 13.7 14.0 98 22.8 17.3 132 West Yellowstone 6700 7.8 7.0 111 15.2 9.6 158 Whiskey Creek 6800 8.9 9.6 93 16.8 13.2 127 ----- ----- Basin Index (%) 101 135 YELLOWSTONE Beartooth Lake 9360 15.6 13.8 113 12.0 12.8 94 Burnt Mtn 5880 4.5 2.4 188 8.6 7.8 110 Canyon 7870 9.4 8.1 116 15.8 10.7 148 Cole Creek 7850 6.1 8.3 73 5.3 7.6 70 Evening Star 9200 19.0 16.2 117 25.2 17.8 142 Fisher Creek 9100 18.4 20.5 90 23.6 20.6 115 Northeast Entrance 7350 6.6 6.3 105 11.8 8.2 144 Parker Peak 9400 16.5 12.9 128 19.3 11.3 171 Sylvan Lake 8420 13.0 12.9 101 23.6 14.8 159 Thumb Divide 7980 10.5 9.6 109 15.8 12.1 131 Two Ocean Plateau 9240 -M 17.4 * -M 17.2 * White Mill 8700 15.2 14.5 105 18.3 15.3 120 Wolverine 7650 -M 7.0 * -M 8.1 * ----- ----- Basin Index (%) 107 129 WIND RIVER Burroughs Creek 8750 12.2 -M * 15.1 -M * Castle Creek 8400 6.9 -M * 9.1 -M * Cold Springs 9630 6.4 4.5 142 9.0 6.2 145 Deer Park 9700 18.1 9.3 195 21.5 12.2 176 Hobbs Park 10100 12.6 7.9 159 12.6 7.7 164 Kirwin 9550 10.0 5.8 172 13.0 7.2 181 Little Warm 9370 6.8 6.3 108 12.0 8.1 148 Owl Creek 8975 4.1 3.1 132 5.6 3.6 156 South Pass 9040 17.1 8.7 197 16.5 10.9 151 St. Lawrence Alt 8620 3.9 4.2 93 7.7 5.3 145 Togwotee Pass 9580 18.4 14.9 123 22.2 15.8 141 Townsend Creek 8700 7.0 5.1 137 10.0 7.0 143 ----- ----- Basin Index (%) 150 155 BIGHORN BASIN Bald Mtn. 9380 12.3 10.8 114 11.0 10.6 104 Bear Trap Meadow 8200 3.4 3.4 100 4.8 5.1 94 Bone Springs Div 9350 9.5 9.8 97 10.0 9.6 104 Grave Springs 8550 3.8 4.9 78 4.9 6.4 77 Kirwin 9550 10.0 5.8 172 13.0 7.2 181 Marquette 8760 5.0 -M * 8.4 -M * Middle Powder 7760 4.7 6.3 75 5.3 7.3 73 Owl Creek 8975 4.1 3.1 132 5.6 3.6 156 Powder River Pass 9480 3.8 6.4 59 6.8 7.8 87 Shell Creek 9580 10.0 9.1 110 8.2 8.9 92 Timber Creek 7950 3.7 2.9 128 5.0 4.5 111 ----- ----- Basin Index (%) 104 105 SHOSHONE RIVER Blackwater 9780 19.5 14.7 133 23.3 13.2 177 Evening Star 9200 19.0 16.2 117 25.2 17.8 142 Marquette 8760 5.0 -M * 8.4 -M * Sylvan Road 7120 9.5 7.8 122 19.6 11.8 166 Younts Peak 8350 12.6 9.5 133 16.9 10.4 162 ----- ----- Basin Index (%) 126 160 POWDER RIVER Bear Trap Meadow 8200 3.4 3.4 100 4.8 5.1 94 Cloud Peak Reservoir 9860 7.4 8.2 90 9.3 7.9 118 Grave Springs 8550 3.8 4.9 78 4.9 6.4 77 Hansen Sawmill 8360 4.9 4.0 122 6.7 5.0 134 Middle Powder 7760 4.7 6.3 75 5.3 7.3 73 Powder River Pass 9480 3.8 6.4 59 6.8 7.8 87 Soldier Park 8720 7.5 -M * 6.9 -M * ----- ----- Basin Index (%) 84 96 TONGUE RIVER Big Goose 7990 5.4 4.9 110 6.4 6.5 98 Bone Springs Div 9350 9.5 9.8 97 10.0 9.6 104 Burgess Junction 7880 5.5 6.6 83 6.9 7.4 93 Dome Lake 8880 6.5 6.8 96 8.0 8.3 96 Little Goose 8870 5.8 -M * 8.0 -M * Sucker Creek 8880 6.5 7.0 93 7.0 8.6 81 Tie Creek 6870 3.8 3.4 112 7.0 7.0 100 ----- ----- Basin Index (%) 97 96 BELLE FOURCHE Cole Canyon 5910 3.4 3.2 106 4.3 5.6 77 ----- ----- Basin Index (%) 106 77 CHEYENNE RIVER BASIN Blind Park 6890 4.1 4.6 89 5.2 7.7 68 North Rapid Creek 6130 4.4 4.2 105 4.7 6.2 76 ----- ----- Basin Index (%) 97 71 UPPER N. PLATTE Arapaho Ridge 10960 18.8 13.1 144 19.6 14.0 140 Blackhall Mtn 9820 25.4 -M * 26.8 -M * Columbine 9160 19.0 14.5 131 21.0 16.3 129 Divide Peak 8880 13.5 12.2 111 16.0 13.5 119 Joe Wright 10120 15.0 12.9 116 20.6 15.9 130 Laprele Creek 8375 7.2 5.4 133 7.0 7.5 93 Med Bow 10500 26.4 -M * 25.0 -M * North French Creek 10130 16.9 15.9 106 18.4 16.8 110 Never Summer 10280 16.4 12.4 132 13.9 -M * Old Battle 10000 25.1 19.0 132 26.6 22.2 120 Rawah 9020 10.0 6.1 164 12.6 9.0 140 Sage Creek Basin 7850 11.3 8.3 136 11.8 9.8 120 Sand Lake 10050 19.5 16.3 120 18.8 15.0 125 South Brush Creek 8440 7.2 7.3 99 8.6 9.5 91 Tower 10500 30.5 27.2 112 32.4 25.3 128 Webber Springs 9250 19.9 13.5 147 23.6 16.9 140 Willow Creek Pass 9540 13.2 7.5 176 14.0 8.3 169 Zirkel 9340 27.7 18.3 151 29.7 18.7 159 ----- ----- Basin Index (%) 129 128 SWEETWATER Deer Park 9700 18.1 9.3 195 21.5 12.2 176 Larsen Creek 9000 12.1 7.2 168 15.6 -M * South Pass 9040 17.1 8.7 197 16.5 10.9 151 ----- ----- Basin Index (%) 188 165 LOWER N. PLATTE Casper Mtn. 7900 6.8 7.5 91 6.9 9.0 77 Laprele Creek 8375 7.2 5.4 133 7.0 7.5 93 Reno Hill 8400 -M 7.6 * -M 8.8 * Windy Peak 7900 -M 4.1 * -M 6.3 * ----- ----- Basin Index (%) 109 84 LARAMIE RIVER Brooklyn Lake 10240 16.3 12.0 136 15.1 12.8 118 Cinnabar Park 9574 13.3 13.1 102 16.0 15.7 102 Crow Creek 8330 4.1 5.7 72 6.0 6.4 94 Deadman Hill 10220 14.2 10.0 142 14.0 10.2 137 Rawah 9020 10.0 6.1 164 12.6 9.0 140 Roach 9700 12.4 9.9 125 14.7 11.7 126 ----- ----- Basin Index (%) 124 119 S. PLATTE Black Mountain 8920 7.2 -M * 8.4 -M * Crow Creek 8330 4.1 5.7 72 6.0 6.4 94 Deadman Hill 10220 14.2 10.0 142 14.0 10.2 137 ----- ----- Basin Index (%) 117 120 LITTLE SNAKE RIVER Battle Mountain 7440 8.7 7.0 124 -M 9.6 * Divide Peak 8880 13.5 12.2 111 16.0 13.5 119 Elk River 8700 15.8 11.1 142 15.7 12.6 125 Little Snake River 8915 22.9 15.4 149 28.4 20.4 139 Old Battle 10000 25.1 19.0 132 26.6 22.2 120 Sage Creek Basin 7850 11.3 8.3 136 11.8 9.8 120 Sandstone RS 8150 10.7 8.0 134 11.8 11.9 99 Whiskey Park 8950 19.9 15.8 126 22.3 17.7 126 ----- ----- Basin Index (%) 132 123 UPPER GREEN RIVER Big Sandy Opening 9080 13.4 8.1 165 15.7 8.3 189 Blind Bull Sum 8650 22.7 13.7 166 16.1 12.8 126 East Rim Divide 7930 11.1 6.8 163 13.3 7.7 173 Elkhart Park G.S. 9400 10.1 7.4 136 15.4 8.4 183 Gros Ventre Summit 8750 9.6 8.3 116 14.0 8.2 171 Gunsight Pass 9820 10.4 8.2 127 14.4 8.8 164 Kendall R.S. 7740 12.5 7.8 160 16.9 9.2 184 Loomis Park 8240 15.3 9.4 163 20.3 11.2 181 New Fork Lake 8340 10.1 6.8 149 10.6 7.0 151 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 12.3 7.4 166 17.2 9.2 187 Spring Creek Divide 9000 20.6 14.3 144 23.2 15.3 152 Triple Peak 8500 22.2 13.1 169 23.5 15.9 148 ----- ----- Basin Index (%) 153 164 LOWER GREEN RIVER Blacks Fork Jct 8870 8.4 -M * 10.6 -M * Buck Pasture 9700 13.9 -M * 16.4 -M * EF Blacks Fork GS 9360 9.3 -M * 9.5 -M * Hams Fork 7840 11.4 7.0 163 13.4 7.3 184 Hewinta 9519 8.8 5.6 157 11.0 8.6 128 Hickerson Park 9145 6.0 3.8 158 6.4 6.1 105 Hole-in-Rock 9150 5.1 4.0 128 6.9 5.7 121 Indian Creek 9425 21.6 14.5 149 -M 13.9 * Kelley R.S. 8180 15.4 8.9 173 20.6 11.5 179 Spirit Lk 10235 9.8 -M * 11.4 -M * Steel Creek Park 10200 11.9 8.6 138 13.5 9.8 138 ----- ----- Basin Index (%) 153 147 UPPER BEAR RIVER Bear River RS 8777 9.8 -M * 11.8 -M * Bug Lake 7950 21.5 10.5 205 19.1 12.3 155 Burts Miller Ranch 8000 5.6 -M * 6.0 -M * Chalk Creek #1 8993 21.9 13.3 165 23.4 15.6 150 Hayden Fork 9212 15.7 8.5 185 -M 13.0 * Kelley R.S. 8180 15.4 8.9 173 20.6 11.5 179 Lily Lake 9156 10.8 7.4 146 13.1 10.6 124 Monte Cristo 8960 22.0 15.8 139 -M 16.2 * Salt River Summit 7760 12.5 7.7 162 17.9 10.6 169 ----- ----- Basin Index (%) 166 155 ----------------------------------------------------------------------------- -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.