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 MONDAY: FEBRUARY 6 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 18.1 11.0 165 25.9 14.4 180 Black Bear 8170 25.3 24.0 105 34.2 25.6 134 Blind Bull Sum 8650 25.4 14.6 174 -M 13.3 * Cottonwood Creek 7670 17.5 13.6 129 23.9 16.4 146 East Rim Divide 7930 12.3 6.9 178 14.5 7.9 184 Grand Targhee 9260 29.6 24.3 122 27.8 21.5 129 Granite Creek 6770 18.5 11.1 167 23.3 14.0 166 Grassy Lake 7265 26.4 21.2 125 37.7 24.7 153 Gros Ventre Summit 8750 11.1 8.6 129 15.4 8.5 181 Gunsight Pass 9820 12.0 8.6 140 15.8 9.2 172 Lewis Lake Divide 7850 23.9 20.6 116 34.5 23.8 145 Phillips Bench 8200 21.4 16.2 132 30.6 18.7 164 Salt River Summit 7760 13.6 8.2 166 19.1 11.0 174 Snake River Station 6920 16.0 11.5 139 25.5 15.9 160 Spring Creek Divide 9000 22.6 15.2 149 25.2 15.9 158 Thumb Divide 7980 13.0 9.7 134 17.8 12.5 142 Togwotee Pass 9580 20.6 15.4 134 24.5 16.3 150 Two Ocean Plateau 9240 27.3 18.4 148 26.6 17.8 149 Willow Creek 8380 21.0 18.0 117 32.2 22.3 144 Younts Peak 8350 15.6 10.0 156 19.3 10.8 179 ----- ----- Basin Index (%) 136 154 MADISON-GALLATIN Black Bear 8170 25.3 24.0 105 34.2 25.6 134 Canyon 7870 11.5 8.5 135 17.7 11.1 159 Madison Plateau 7750 16.0 14.4 111 24.7 17.8 139 West Yellowstone 6700 9.0 7.1 127 16.4 10.0 164 Whiskey Creek 6800 10.4 9.8 106 18.0 13.6 132 ----- ----- Basin Index (%) 113 142 YELLOWSTONE Beartooth Lake 9360 19.0 14.4 132 15.2 13.3 114 Burnt Mtn 5880 5.4 2.6 208 9.6 8.2 117 Canyon 7870 11.5 8.5 135 17.7 11.1 159 Cole Creek 7850 7.0 8.7 80 5.7 7.9 72 Evening Star 9200 22.9 16.7 137 -M 18.5 * Fisher Creek 9100 22.7 21.4 106 27.5 21.4 129 Northeast Entrance 7350 7.9 6.6 120 13.2 8.6 153 Parker Peak 9400 19.8 13.4 148 21.9 11.7 187 Sylvan Lake 8420 15.2 13.4 113 26.0 15.3 170 Thumb Divide 7980 13.0 9.7 134 17.8 12.5 142 Two Ocean Plateau 9240 27.3 18.4 148 26.6 17.8 149 White Mill 8700 18.7 15.1 124 21.6 15.9 136 Wolverine 7650 -M 7.2 * -M 8.4 * ----- ----- Basin Index (%) 128 141 WIND RIVER Burroughs Creek 8750 13.9 -M * 16.5 -M * Castle Creek 8400 7.8 -M * 9.9 -M * Cold Springs 9630 7.2 4.8 150 9.3 6.4 145 Deer Park 9700 18.8 9.5 198 22.5 12.7 177 Hobbs Park 10100 13.2 8.0 165 12.8 8.0 160 Kirwin 9550 11.4 6.0 190 14.4 7.4 195 Little Warm 9370 8.5 6.6 129 13.5 8.4 161 Owl Creek 8975 4.6 3.1 148 6.0 3.7 162 South Pass 9040 18.0 9.7 186 16.9 11.3 150 St. Lawrence Alt 8620 3.9 4.2 93 7.9 5.5 144 Togwotee Pass 9580 20.6 15.4 134 24.5 16.3 150 Townsend Creek 8700 7.3 5.5 133 10.2 7.3 140 ----- ----- Basin Index (%) 156 159 BIGHORN BASIN Bald Mtn. 9380 13.2 11.1 119 11.7 11.1 105 Bear Trap Meadow 8200 3.5 3.6 97 5.0 5.3 94 Bone Springs Div 9350 10.6 9.9 107 10.9 9.9 110 Grave Springs 8550 3.9 5.0 78 4.9 6.7 73 Kirwin 9550 11.4 6.0 190 14.4 7.4 195 Marquette 8760 5.5 -M * 9.4 -M * Middle Powder 7760 4.8 6.6 73 5.4 7.6 71 Owl Creek 8975 4.6 3.1 148 6.0 3.7 162 Powder River Pass 9480 4.1 6.8 60 7.1 8.1 88 Shell Creek 9580 10.8 9.3 116 8.6 9.2 93 Timber Creek 7950 4.0 3.1 129 5.3 4.6 115 ----- ----- Basin Index (%) 110 108 SHOSHONE RIVER Blackwater 9780 23.0 15.0 153 -M 13.6 * Evening Star 9200 22.9 16.7 137 -M 18.5 * Marquette 8760 5.5 -M * 9.4 -M * Sylvan Road 7120 11.6 7.9 147 21.7 12.2 178 Younts Peak 8350 15.6 10.0 156 19.3 10.8 179 ----- ----- Basin Index (%) 147 178* POWDER RIVER Bear Trap Meadow 8200 3.5 3.6 97 5.0 5.3 94 Cloud Peak Reservoir 9860 7.9 8.6 92 9.6 8.2 117 Grave Springs 8550 3.9 5.0 78 4.9 6.7 73 Hansen Sawmill 8360 5.4 4.0 135 7.3 5.2 140 Middle Powder 7760 4.8 6.6 73 5.4 7.6 71 Powder River Pass 9480 4.1 6.8 60 7.1 8.1 88 Soldier Park 8720 8.5 -M * 7.4 -M * ----- ----- Basin Index (%) 86 96 TONGUE RIVER Big Goose 7990 6.0 5.0 120 6.9 6.7 103 Bone Springs Div 9350 10.6 9.9 107 10.9 9.9 110 Burgess Junction 7880 6.4 6.9 93 7.7 7.7 100 Dome Lake 8880 7.2 7.1 101 8.7 8.6 101 Little Goose 8870 6.4 -M * 8.5 -M * Sucker Creek 8880 7.3 7.4 99 7.6 9.0 84 Tie Creek 6870 4.5 3.5 129 7.7 7.3 105 ----- ----- Basin Index (%) 106 101 BELLE FOURCHE Cole Canyon 5910 3.6 3.5 103 4.8 5.9 81 ----- ----- Basin Index (%) 103 81 CHEYENNE RIVER BASIN Blind Park 6890 4.7 5.0 94 5.8 8.0 72 North Rapid Creek 6130 4.7 4.5 104 5.1 6.5 78 ----- ----- Basin Index (%) 99 75 UPPER N. PLATTE Arapaho Ridge 10960 20.0 13.7 146 20.6 14.7 140 Blackhall Mtn 9820 27.1 -M * 27.7 -M * Columbine 9160 20.3 15.3 133 22.2 16.9 131 Divide Peak 8880 13.8 13.0 106 16.3 14.2 115 Joe Wright 10120 15.2 13.3 114 21.2 16.6 128 Laprele Creek 8375 7.4 5.6 132 7.1 7.8 91 Med Bow 10500 27.5 -M * 26.0 -M * North French Creek 10130 17.7 16.6 107 19.2 17.4 110 Never Summer 10280 16.8 13.0 129 14.2 -M * Old Battle 10000 26.6 19.9 134 28.1 23.2 121 Rawah 9020 10.2 6.6 155 13.0 9.4 138 Sage Creek Basin 7850 11.5 8.8 131 11.8 10.1 117 Sand Lake 10050 20.5 17.1 120 19.5 15.6 125 South Brush Creek 8440 7.6 7.6 100 9.0 9.8 92 Tower 10500 33.3 28.8 116 34.6 26.4 131 Webber Springs 9250 21.5 14.8 145 25.1 17.6 143 Willow Creek Pass 9540 -M 8.0 * -M 8.6 * Zirkel 9340 30.4 19.2 158 32.3 19.7 164 ----- ----- Basin Index (%) 128 128 SWEETWATER Deer Park 9700 18.8 9.5 198 22.5 12.7 177 Larsen Creek 9000 13.3 7.7 173 16.5 -M * South Pass 9040 18.0 9.7 186 16.9 11.3 150 ----- ----- Basin Index (%) 186 164 LOWER N. PLATTE Casper Mtn. 7900 6.9 7.9 87 7.0 9.4 74 Laprele Creek 8375 7.4 5.6 132 7.1 7.8 91 Reno Hill 8400 7.6 8.0 95 8.0 9.3 86 Windy Peak 7900 5.9 4.3 137 6.6 6.5 102 ----- ----- Basin Index (%) 108 87 LARAMIE RIVER Brooklyn Lake 10240 17.6 12.2 144 16.0 13.3 120 Cinnabar Park 9574 14.1 13.7 103 16.8 16.7 101 Crow Creek 8330 4.1 5.7 72 6.1 6.5 94 Deadman Hill 10220 15.0 10.5 143 14.7 10.6 139 Rawah 9020 10.2 6.6 155 13.0 9.4 138 Roach 9700 12.9 10.4 124 15.3 12.2 125 ----- ----- Basin Index (%) 125 119 S. PLATTE Black Mountain 8920 7.4 -M * 8.5 -M * Crow Creek 8330 4.1 5.7 72 6.1 6.5 94 Deadman Hill 10220 15.0 10.5 143 14.7 10.6 139 ----- ----- Basin Index (%) 118 122 LITTLE SNAKE RIVER Battle Mountain 7440 8.8 7.3 121 11.9 10.0 119 Divide Peak 8880 13.8 13.0 106 16.3 14.2 115 Elk River 8700 16.1 12.0 134 15.9 13.2 120 Little Snake River 8915 24.1 16.3 148 29.3 21.5 136 Old Battle 10000 26.6 19.9 134 28.1 23.2 121 Sage Creek Basin 7850 11.5 8.8 131 11.8 10.1 117 Sandstone RS 8150 10.8 8.4 129 12.0 12.4 97 Whiskey Park 8950 21.1 16.9 125 23.2 18.5 125 ----- ----- Basin Index (%) 129 121 UPPER GREEN RIVER Big Sandy Opening 9080 14.2 8.5 167 16.4 8.6 191 Blind Bull Sum 8650 25.4 14.6 174 -M 13.3 * East Rim Divide 7930 12.3 6.9 178 14.5 7.9 184 Elkhart Park G.S. 9400 11.3 7.8 145 16.6 8.8 189 Gros Ventre Summit 8750 11.1 8.6 129 15.4 8.5 181 Gunsight Pass 9820 12.0 8.6 140 15.8 9.2 172 Kendall R.S. 7740 15.1 7.9 191 19.0 9.5 200 Loomis Park 8240 17.2 9.9 174 21.9 11.6 189 New Fork Lake 8340 11.3 6.8 166 11.4 7.3 156 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 13.2 8.0 165 17.9 9.5 188 Spring Creek Divide 9000 22.6 15.2 149 25.2 15.9 158 Triple Peak 8500 23.9 13.6 176 24.2 16.6 146 ----- ----- Basin Index (%) 163 175 LOWER GREEN RIVER Blacks Fork Jct 8870 9.0 -M * 11.3 -M * Buck Pasture 9700 14.1 -M * 16.6 -M * EF Blacks Fork GS 9360 9.6 -M * 10.0 -M * Hams Fork 7840 12.2 7.5 163 13.9 7.5 185 Hewinta 9519 8.8 6.1 144 11.0 9.0 122 Hickerson Park 9145 6.1 4.0 152 6.4 6.3 102 Hole-in-Rock 9150 5.1 4.1 124 6.9 5.9 117 Indian Creek 9425 23.0 15.0 153 -M 14.5 * Kelley R.S. 8180 16.1 9.4 171 21.3 11.9 179 Spirit Lk 10235 9.9 -M * 11.5 -M * Steel Creek Park 10200 12.0 9.1 132 13.7 10.3 133 ----- ----- Basin Index (%) 151 144 UPPER BEAR RIVER Bear River RS 8777 10.0 -M * 12.0 -M * Bug Lake 7950 22.1 11.7 189 21.4 12.8 167 Burts Miller Ranch 8000 5.7 -M * 6.5 -M * Chalk Creek #1 8993 22.4 13.6 165 23.7 16.2 146 Hayden Fork 9212 16.1 9.0 179 20.8 13.6 153 Kelley R.S. 8180 16.1 9.4 171 21.3 11.9 179 Lily Lake 9156 11.0 7.6 145 13.4 11.0 122 Monte Cristo 8960 22.5 16.3 138 23.8 16.8 142 Salt River Summit 7760 13.6 8.2 166 19.1 11.0 174 ----- ----- Basin Index (%) 163 154 ----------------------------------------------------------------------------- -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.