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: FEBRUARY 7 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 18.8 11.1 169 26.2 14.5 181 Black Bear 8170 26.6 24.3 109 35.2 25.8 136 Blind Bull Sum 8650 26.6 14.7 181 -M 13.3 * Cottonwood Creek 7670 18.0 13.6 132 24.5 16.4 149 East Rim Divide 7930 12.9 6.9 187 15.0 8.0 188 Grand Targhee 9260 29.5 24.4 121 28.1 21.5 131 Granite Creek 6770 19.7 11.2 176 23.6 14.1 167 Grassy Lake 7265 26.7 21.4 125 37.9 24.9 152 Gros Ventre Summit 8750 11.9 8.6 138 16.0 8.5 188 Gunsight Pass 9820 12.7 8.6 148 16.3 9.2 177 Lewis Lake Divide 7850 24.3 20.9 116 34.6 23.9 145 Phillips Bench 8200 22.6 16.4 138 31.1 18.9 165 Salt River Summit 7760 14.3 8.3 172 19.8 11.0 180 Snake River Station 6920 16.1 11.7 138 25.7 16.0 161 Spring Creek Divide 9000 23.6 15.3 154 26.1 16.0 163 Thumb Divide 7980 14.0 9.7 144 18.6 12.6 148 Togwotee Pass 9580 21.2 15.5 137 25.1 16.4 153 Two Ocean Plateau 9240 29.1 18.5 157 27.2 17.9 152 Willow Creek 8380 22.0 18.1 122 33.0 22.4 147 Younts Peak 8350 16.1 10.1 159 19.6 10.8 181 ----- ----- Basin Index (%) 141 157 MADISON-GALLATIN Black Bear 8170 26.6 24.3 109 35.2 25.8 136 Canyon 7870 12.1 8.5 142 18.3 11.1 165 Madison Plateau 7750 16.8 14.6 115 25.3 18.0 141 West Yellowstone 6700 9.3 7.2 129 16.7 10.0 167 Whiskey Creek 6800 10.9 9.8 111 18.3 13.7 134 ----- ----- Basin Index (%) 118 145 YELLOWSTONE Beartooth Lake 9360 19.7 14.4 137 15.8 13.3 119 Burnt Mtn 5880 5.6 2.7 207 9.8 8.2 120 Canyon 7870 12.1 8.5 142 18.3 11.1 165 Cole Creek 7850 7.2 8.7 83 5.8 7.9 73 Evening Star 9200 23.8 16.7 143 29.0 18.6 156 Fisher Creek 9100 24.0 21.5 112 28.6 21.6 132 Northeast Entrance 7350 8.3 6.7 124 13.4 8.6 156 Parker Peak 9400 20.7 13.5 153 22.4 11.8 190 Sylvan Lake 8420 16.0 13.5 119 26.8 15.3 175 Thumb Divide 7980 14.0 9.7 144 18.6 12.6 148 Two Ocean Plateau 9240 29.1 18.5 157 27.2 17.9 152 White Mill 8700 19.2 15.2 126 22.0 16.0 138 Wolverine 7650 -M 7.2 * -M 8.5 * ----- ----- Basin Index (%) 133 146 WIND RIVER Burroughs Creek 8750 14.6 -M * 16.9 -M * Castle Creek 8400 8.1 -M * 10.3 -M * Cold Springs 9630 7.5 4.8 156 9.6 6.4 150 Deer Park 9700 19.8 9.5 208 23.1 12.8 180 Hobbs Park 10100 14.0 8.0 175 13.3 8.1 164 Kirwin 9550 11.8 6.0 197 14.7 7.5 196 Little Warm 9370 9.1 6.6 138 14.2 8.5 167 Owl Creek 8975 4.6 3.1 148 6.1 3.7 165 South Pass 9040 18.8 9.7 194 17.4 11.3 154 St. Lawrence Alt 8620 4.4 4.2 105 8.5 5.5 155 Togwotee Pass 9580 21.2 15.5 137 25.1 16.4 153 Townsend Creek 8700 7.7 5.5 140 10.3 7.3 141 ----- ----- Basin Index (%) 163 163 BIGHORN BASIN Bald Mtn. 9380 13.2 11.2 118 11.7 11.1 105 Bear Trap Meadow 8200 3.5 3.6 97 5.0 5.3 94 Bone Springs Div 9350 10.7 9.9 108 10.9 10.0 109 Grave Springs 8550 3.9 5.1 76 4.9 6.7 73 Kirwin 9550 11.8 6.0 197 14.7 7.5 196 Marquette 8760 5.5 -M * 9.0 -M * Middle Powder 7760 4.8 6.6 73 5.4 7.7 70 Owl Creek 8975 4.6 3.1 148 6.1 3.7 165 Powder River Pass 9480 4.1 6.9 59 7.2 8.1 89 Shell Creek 9580 10.9 9.4 116 8.7 9.2 95 Timber Creek 7950 4.0 3.1 129 5.3 4.6 115 ----- ----- Basin Index (%) 110 108 SHOSHONE RIVER Blackwater 9780 23.7 15.0 158 27.3 13.7 199 Evening Star 9200 23.8 16.7 143 29.0 18.6 156 Marquette 8760 5.5 -M * 9.0 -M * Sylvan Road 7120 12.0 8.0 150 22.1 12.3 180 Younts Peak 8350 16.1 10.1 159 19.6 10.8 181 ----- ----- Basin Index (%) 152 177 POWDER RIVER Bear Trap Meadow 8200 3.5 3.6 97 5.0 5.3 94 Cloud Peak Reservoir 9860 8.0 8.7 92 9.7 8.2 118 Grave Springs 8550 3.9 5.1 76 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 7.7 70 Powder River Pass 9480 4.1 6.9 59 7.2 8.1 89 Soldier Park 8720 8.7 -M * 7.4 -M * ----- ----- Basin Index (%) 85 96 TONGUE RIVER Big Goose 7990 6.0 5.1 118 6.9 6.8 101 Bone Springs Div 9350 10.7 9.9 108 10.9 10.0 109 Burgess Junction 7880 6.5 7.0 93 7.7 7.8 99 Dome Lake 8880 7.2 7.2 100 8.7 8.7 100 Little Goose 8870 6.4 -M * 8.6 -M * Sucker Creek 8880 7.4 7.4 100 7.6 9.0 84 Tie Creek 6870 4.4 3.5 126 7.7 7.3 105 ----- ----- Basin Index (%) 105 100 BELLE FOURCHE Cole Canyon 5910 3.6 3.6 100 4.7 6.0 78 ----- ----- Basin Index (%) 100 78 CHEYENNE RIVER BASIN Blind Park 6890 4.7 5.1 92 5.8 8.1 72 North Rapid Creek 6130 4.7 4.6 102 5.1 6.5 78 ----- ----- Basin Index (%) 97 75 UPPER N. PLATTE Arapaho Ridge 10960 20.0 13.8 145 20.6 14.8 139 Blackhall Mtn 9820 27.4 -M * 28.0 -M * Columbine 9160 20.2 15.5 130 22.3 16.9 132 Divide Peak 8880 13.7 13.1 105 16.3 14.2 115 Joe Wright 10120 15.2 13.3 114 21.1 16.6 127 Laprele Creek 8375 7.4 5.7 130 7.1 7.8 91 Med Bow 10500 27.6 -M * 26.1 -M * North French Creek 10130 17.8 16.7 107 19.3 17.4 111 Never Summer 10280 16.9 13.0 130 14.3 -M * Old Battle 10000 26.8 20.1 133 28.1 23.3 121 Rawah 9020 10.2 6.6 155 13.0 9.4 138 Sage Creek Basin 7850 11.4 8.9 128 11.9 10.3 116 Sand Lake 10050 20.6 17.2 120 19.5 15.7 124 South Brush Creek 8440 7.7 7.6 101 9.0 9.9 91 Tower 10500 32.8 29.1 113 34.6 26.5 131 Webber Springs 9250 21.6 14.9 145 25.2 17.6 143 Willow Creek Pass 9540 -M 8.0 * -M 8.6 * Zirkel 9340 30.7 19.3 159 32.4 19.8 164 ----- ----- Basin Index (%) 127 127 SWEETWATER Deer Park 9700 19.8 9.5 208 23.1 12.8 180 Larsen Creek 9000 13.8 7.8 177 16.7 -M * South Pass 9040 18.8 9.7 194 17.4 11.3 154 ----- ----- Basin Index (%) 194 168 LOWER N. PLATTE Casper Mtn. 7900 6.9 8.0 86 7.0 9.4 74 Laprele Creek 8375 7.4 5.7 130 7.1 7.8 91 Reno Hill 8400 7.6 8.1 94 8.0 9.3 86 Windy Peak 7900 6.0 4.4 136 6.6 6.6 100 ----- ----- Basin Index (%) 106 87 LARAMIE RIVER Brooklyn Lake 10240 17.6 12.3 143 16.1 13.4 120 Cinnabar Park 9574 14.1 13.8 102 17.0 16.8 101 Crow Creek 8330 4.1 5.7 72 6.1 6.6 92 Deadman Hill 10220 15.1 10.6 142 14.7 10.6 139 Rawah 9020 10.2 6.6 155 13.0 9.4 138 Roach 9700 13.0 10.5 124 15.4 12.3 125 ----- ----- Basin Index (%) 125 119 S. PLATTE Black Mountain 8920 7.3 -M * 8.6 -M * Crow Creek 8330 4.1 5.7 72 6.1 6.6 92 Deadman Hill 10220 15.1 10.6 142 14.7 10.6 139 ----- ----- Basin Index (%) 118 121 LITTLE SNAKE RIVER Battle Mountain 7440 8.7 7.4 118 12.0 10.0 120 Divide Peak 8880 13.7 13.1 105 16.3 14.2 115 Elk River 8700 16.1 12.1 133 15.9 13.3 120 Little Snake River 8915 24.2 16.5 147 29.5 21.7 136 Old Battle 10000 26.8 20.1 133 28.1 23.3 121 Sage Creek Basin 7850 11.4 8.9 128 11.9 10.3 116 Sandstone RS 8150 10.8 8.5 127 12.0 12.4 97 Whiskey Park 8950 21.0 17.0 124 23.2 18.6 125 ----- ----- Basin Index (%) 128 120 UPPER GREEN RIVER Big Sandy Opening 9080 14.6 8.6 170 16.8 8.6 195 Blind Bull Sum 8650 26.6 14.7 181 -M 13.3 * East Rim Divide 7930 12.9 6.9 187 15.0 8.0 188 Elkhart Park G.S. 9400 11.7 7.8 150 16.8 8.8 191 Gros Ventre Summit 8750 11.9 8.6 138 16.0 8.5 188 Gunsight Pass 9820 12.7 8.6 148 16.3 9.2 177 Kendall R.S. 7740 16.0 8.0 200 19.1 9.6 199 Loomis Park 8240 18.2 9.9 184 22.7 11.7 194 New Fork Lake 8340 12.2 6.9 177 12.2 7.3 167 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 13.8 8.1 170 18.4 9.6 192 Spring Creek Divide 9000 23.6 15.3 154 26.1 16.0 163 Triple Peak 8500 25.0 13.8 181 -M 16.6 * ----- ----- Basin Index (%) 170 184 LOWER GREEN RIVER Blacks Fork Jct 8870 8.6 -M * 10.7 -M * Buck Pasture 9700 14.1 -M * 16.6 -M * EF Blacks Fork GS 9360 10.6 -M * 10.7 -M * Hams Fork 7840 12.5 7.6 164 14.0 7.6 184 Hewinta 9519 8.8 6.2 142 11.0 9.0 122 Hickerson Park 9145 6.1 4.0 152 6.4 6.4 100 Hole-in-Rock 9150 5.1 4.2 121 6.9 5.9 117 Indian Creek 9425 23.9 15.1 158 -M 14.6 * Kelley R.S. 8180 16.8 9.4 179 21.8 12.0 182 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 (%) 153 144 UPPER BEAR RIVER Bear River RS 8777 10.2 -M * 12.1 -M * Bug Lake 7950 23.1 11.8 196 22.1 12.9 171 Burts Miller Ranch 8000 5.7 -M * 6.5 -M * Chalk Creek #1 8993 22.8 13.8 165 23.9 16.3 147 Hayden Fork 9212 16.1 9.1 177 21.0 13.6 154 Kelley R.S. 8180 16.8 9.4 179 21.8 12.0 182 Lily Lake 9156 11.2 7.6 147 13.5 11.1 122 Monte Cristo 8960 23.5 16.6 142 24.6 16.9 146 Salt River Summit 7760 14.3 8.3 172 19.8 11.0 180 ----- ----- Basin Index (%) 167 156 ----------------------------------------------------------------------------- -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.