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 13 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 21.7 12.2 178 29.3 15.1 194 Black Bear 8170 29.1 26.7 109 38.8 26.9 144 Blind Bull Sum 8650 32.6 15.5 210 -M 14.0 * Cottonwood Creek 7670 21.1 14.3 148 27.9 17.3 161 East Rim Divide 7930 15.2 7.1 214 17.1 8.3 206 Grand Targhee 9260 32.6 25.7 127 30.8 22.8 135 Granite Creek 6770 23.1 11.9 194 26.1 14.7 178 Grassy Lake 7265 29.3 23.2 126 41.2 26.1 158 Gros Ventre Summit 8750 -M 8.8 * -M 8.8 * Gunsight Pass 9820 15.6 9.1 171 18.5 9.8 189 Lewis Lake Divide 7850 28.9 22.6 128 39.5 25.2 157 Phillips Bench 8200 25.9 17.4 149 35.3 19.9 177 Salt River Summit 7760 16.9 8.9 190 22.2 11.6 191 Snake River Station 6920 17.5 12.7 138 28.5 16.8 170 Spring Creek Divide 9000 28.7 16.1 178 29.4 16.8 175 Thumb Divide 7980 16.8 10.3 163 20.9 13.1 160 Togwotee Pass 9580 24.5 16.1 152 28.5 17.2 166 Two Ocean Plateau 9240 -M 19.2 * -M 19.1 * Willow Creek 8380 26.7 18.7 143 36.2 23.5 154 Younts Peak 8350 19.4 10.5 185 23.3 11.4 204 ----- ----- Basin Index (%) 153 166 MADISON-GALLATIN Black Bear 8170 29.1 26.7 109 38.8 26.9 144 Canyon 7870 13.6 9.0 151 20.2 11.7 173 Madison Plateau 7750 18.8 15.4 122 27.2 18.7 145 West Yellowstone 6700 9.9 7.5 132 18.0 10.5 171 Whiskey Creek 6800 11.7 10.4 112 20.0 14.3 140 ----- ----- Basin Index (%) 120 151 YELLOWSTONE Beartooth Lake 9360 23.5 15.1 156 19.5 14.0 139 Burnt Mtn 5880 4.7 3.2 147 10.1 8.5 119 Canyon 7870 13.6 9.0 151 20.2 11.7 173 Cole Creek 7850 7.5 8.8 85 5.7 8.2 70 Evening Star 9200 27.6 17.1 161 29.6 19.7 150 Fisher Creek 9100 29.2 22.5 130 33.5 22.5 149 Northeast Entrance 7350 9.3 7.2 129 15.0 9.0 167 Parker Peak 9400 23.7 13.9 171 22.8 12.4 184 Sylvan Lake 8420 18.1 13.7 132 29.1 16.0 182 Thumb Divide 7980 16.8 10.3 163 20.9 13.1 160 Two Ocean Plateau 9240 -M 19.2 * -M 19.1 * White Mill 8700 22.6 16.0 141 24.7 16.8 147 Wolverine 7650 -M 7.7 * -M 8.9 * ----- ----- Basin Index (%) 144 152 WIND RIVER Burroughs Creek 8750 18.3 -M * 20.6 -M * Castle Creek 8400 10.0 -M * 12.1 -M * Cold Springs 9630 9.2 4.9 188 11.6 6.6 176 Deer Park 9700 22.9 9.6 239 26.5 13.5 196 Hobbs Park 10100 16.1 8.3 194 15.5 8.3 187 Kirwin 9550 13.9 6.1 228 17.0 7.8 218 Little Warm 9370 11.2 7.0 160 16.8 8.8 191 Owl Creek 8975 5.6 3.2 175 7.2 3.8 189 South Pass 9040 21.3 9.9 215 20.0 11.8 169 St. Lawrence Alt 8620 5.1 4.4 116 9.4 5.7 165 Togwotee Pass 9580 24.5 16.1 152 28.5 17.2 166 Townsend Creek 8700 8.5 5.7 149 11.6 7.7 151 ----- ----- Basin Index (%) 184 180 BIGHORN BASIN Bald Mtn. 9380 13.9 12.3 113 12.3 11.6 106 Bear Trap Meadow 8200 3.8 3.7 103 5.1 5.5 93 Bone Springs Div 9350 11.7 10.5 111 11.6 10.4 112 Grave Springs 8550 4.2 5.4 78 4.8 7.0 69 Kirwin 9550 13.9 6.1 228 17.0 7.8 218 Marquette 8760 6.2 -M * 10.0 -M * Middle Powder 7760 5.0 6.9 72 5.5 7.9 70 Owl Creek 8975 5.6 3.2 175 7.2 3.8 189 Powder River Pass 9480 4.9 7.0 70 7.8 8.5 92 Shell Creek 9580 11.5 9.9 116 9.0 9.5 95 Timber Creek 7950 4.4 3.1 142 5.8 4.8 121 ----- ----- Basin Index (%) 116 112 SHOSHONE RIVER Blackwater 9780 27.5 15.3 180 30.7 14.3 215 Evening Star 9200 27.6 17.1 161 29.6 19.7 150 Marquette 8760 6.2 -M * 10.0 -M * Sylvan Road 7120 13.2 8.5 155 24.4 12.7 192 Younts Peak 8350 19.4 10.5 185 23.3 11.4 204 ----- ----- Basin Index (%) 171 186 POWDER RIVER Bear Trap Meadow 8200 3.8 3.7 103 5.1 5.5 93 Cloud Peak Reservoir 9860 8.7 9.3 94 10.3 8.5 121 Grave Springs 8550 4.2 5.4 78 4.8 7.0 69 Hansen Sawmill 8360 6.0 4.3 140 7.8 5.4 144 Middle Powder 7760 5.0 6.9 72 5.5 7.9 70 Powder River Pass 9480 4.9 7.0 70 7.8 8.5 92 Soldier Park 8720 9.3 -M * 7.7 -M * ----- ----- Basin Index (%) 89 96 TONGUE RIVER Big Goose 7990 6.4 5.5 116 7.3 7.1 103 Bone Springs Div 9350 11.7 10.5 111 11.6 10.4 112 Burgess Junction 7880 6.9 7.3 95 7.9 8.1 98 Dome Lake 8880 8.1 7.6 107 9.5 9.0 106 Little Goose 8870 6.9 -M * 9.2 -M * Sucker Creek 8880 7.8 7.7 101 7.8 9.4 83 Tie Creek 6870 4.4 3.7 119 7.9 7.6 104 ----- ----- Basin Index (%) 107 101 BELLE FOURCHE Cole Canyon 5910 3.3 4.2 79 4.7 6.5 72 ----- ----- Basin Index (%) 79 72 CHEYENNE RIVER BASIN Blind Park 6890 4.5 5.5 82 5.9 8.4 70 North Rapid Creek 6130 4.4 5.1 86 5.1 6.9 74 ----- ----- Basin Index (%) 84 72 UPPER N. PLATTE Arapaho Ridge 10960 21.5 14.4 149 21.9 15.5 141 Blackhall Mtn 9820 30.0 -M * 29.6 -M * Columbine 9160 21.6 16.7 129 23.3 18.0 129 Divide Peak 8880 15.4 13.8 112 17.9 15.0 119 Joe Wright 10120 16.3 13.9 117 23.0 17.5 131 Laprele Creek 8375 9.1 6.2 147 8.4 8.2 102 Med Bow 10500 29.7 -M * 27.6 -M * North French Creek 10130 19.2 18.3 105 20.5 18.5 111 Never Summer 10280 18.8 13.6 138 15.5 -M * Old Battle 10000 29.8 21.4 139 31.3 24.6 127 Rawah 9020 10.8 7.2 150 13.7 9.7 141 Sage Creek Basin 7850 12.3 9.2 134 12.8 10.7 120 Sand Lake 10050 22.4 18.0 124 21.1 16.5 128 South Brush Creek 8440 8.3 7.9 105 9.3 10.3 90 Tower 10500 35.6 31.4 113 37.3 28.0 133 Webber Springs 9250 23.3 16.0 146 27.6 18.5 149 Willow Creek Pass 9540 15.1 8.3 182 16.0 9.0 178 Zirkel 9340 34.5 20.1 172 35.9 20.7 173 ----- ----- Basin Index (%) 133 133 SWEETWATER Deer Park 9700 22.9 9.6 239 26.5 13.5 196 Larsen Creek 9000 16.1 8.2 196 18.6 -M * South Pass 9040 21.3 9.9 215 20.0 11.8 169 ----- ----- Basin Index (%) 218 184 LOWER N. PLATTE Casper Mtn. 7900 7.7 8.4 92 7.4 9.8 76 Laprele Creek 8375 9.1 6.2 147 8.4 8.2 102 Reno Hill 8400 8.6 8.4 102 8.9 9.8 91 Windy Peak 7900 7.2 4.8 150 7.6 6.9 110 ----- ----- Basin Index (%) 117 93 LARAMIE RIVER Brooklyn Lake 10240 19.4 13.3 146 17.5 14.0 125 Cinnabar Park 9574 15.0 15.0 100 17.7 17.6 101 Crow Creek 8330 3.8 6.0 63 6.1 6.9 88 Deadman Hill 10220 16.4 11.1 148 15.8 11.2 141 Rawah 9020 10.8 7.2 150 13.7 9.7 141 Roach 9700 14.1 11.1 127 16.6 12.9 129 ----- ----- Basin Index (%) 125 121 S. PLATTE Black Mountain 8920 7.6 -M * 8.8 -M * Crow Creek 8330 3.8 6.0 63 6.1 6.9 88 Deadman Hill 10220 16.4 11.1 148 15.8 11.2 141 ----- ----- Basin Index (%) 118 121 LITTLE SNAKE RIVER Battle Mountain 7440 8.8 8.1 109 12.6 10.7 118 Divide Peak 8880 15.4 13.8 112 17.9 15.0 119 Elk River 8700 16.5 13.1 126 16.7 14.0 119 Little Snake River 8915 26.4 17.7 149 32.0 22.7 141 Old Battle 10000 29.8 21.4 139 31.3 24.6 127 Sage Creek Basin 7850 12.3 9.2 134 12.8 10.7 120 Sandstone RS 8150 11.0 9.4 117 12.9 13.2 98 Whiskey Park 8950 22.2 18.2 122 24.0 19.8 121 ----- ----- Basin Index (%) 128 123 UPPER GREEN RIVER Big Sandy Opening 9080 17.0 8.8 193 19.1 9.0 212 Blind Bull Sum 8650 32.6 15.5 210 -M 14.0 * East Rim Divide 7930 15.2 7.1 214 17.1 8.3 206 Elkhart Park G.S. 9400 14.0 8.2 171 19.0 9.2 207 Gros Ventre Summit 8750 -M 8.8 * -M 8.8 * Gunsight Pass 9820 15.6 9.1 171 18.5 9.8 189 Kendall R.S. 7740 18.4 8.7 211 22.7 10.1 225 Loomis Park 8240 21.7 10.4 209 25.9 12.2 212 New Fork Lake 8340 13.9 7.3 190 14.1 7.6 186 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 15.7 8.7 180 21.4 10.0 214 Spring Creek Divide 9000 28.7 16.1 178 29.4 16.8 175 Triple Peak 8500 30.6 15.1 203 31.2 17.4 179 ----- ----- Basin Index (%) 194 198 LOWER GREEN RIVER Blacks Fork Jct 8870 8.6 -M * 11.4 -M * Buck Pasture 9700 14.8 -M * 17.6 -M * EF Blacks Fork GS 9360 12.2 -M * 11.8 -M * Hams Fork 7840 14.0 8.1 173 15.9 7.9 201 Hewinta 9519 9.0 6.7 134 11.4 9.5 120 Hickerson Park 9145 6.2 4.7 132 6.5 6.7 97 Hole-in-Rock 9150 5.2 4.5 116 7.0 6.2 113 Indian Creek 9425 28.8 16.1 179 -M 15.4 * Kelley R.S. 8180 20.4 10.0 204 24.0 12.6 190 Spirit Lk 10235 10.5 -M * 12.2 -M * Steel Creek Park 10200 12.4 9.8 127 14.5 10.9 133 ----- ----- Basin Index (%) 160 147 UPPER BEAR RIVER Bear River RS 8777 10.8 -M * 13.0 -M * Bug Lake 7950 -M 12.7 * -M 13.5 * Burts Miller Ranch 8000 5.6 -M * 6.5 -M * Chalk Creek #1 8993 25.6 15.4 166 26.9 17.1 157 Hayden Fork 9212 17.7 10.1 175 22.7 14.4 158 Kelley R.S. 8180 20.4 10.0 204 24.0 12.6 190 Lily Lake 9156 12.2 8.5 144 14.4 11.7 123 Monte Cristo 8960 26.3 18.0 146 23.5 17.7 133 Salt River Summit 7760 16.9 8.9 190 22.2 11.6 191 ----- ----- Basin Index (%) 168 157 ----------------------------------------------------------------------------- -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.