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 SUNDAY: FEBRUARY 5 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 17.9 11.0 163 25.7 14.4 178 Black Bear 8170 25.0 23.7 105 33.9 25.5 133 Blind Bull Sum 8650 25.1 14.5 173 -M 13.2 * Cottonwood Creek 7670 17.4 13.6 128 23.8 16.3 146 East Rim Divide 7930 12.2 6.9 177 14.3 7.9 181 Grand Targhee 9260 29.5 24.1 122 27.5 21.3 129 Granite Creek 6770 18.2 11.0 165 22.6 14.0 161 Grassy Lake 7265 26.1 21.0 124 37.4 24.6 152 Gros Ventre Summit 8750 10.9 8.6 127 15.2 8.4 181 Gunsight Pass 9820 11.8 8.5 139 15.6 9.2 170 Lewis Lake Divide 7850 23.3 20.4 114 34.2 23.7 144 Phillips Bench 8200 21.1 16.1 131 30.3 18.7 162 Salt River Summit 7760 13.5 8.2 165 19.1 10.9 175 Snake River Station 6920 15.8 11.4 139 25.4 15.9 160 Spring Creek Divide 9000 22.5 15.1 149 25.1 15.9 158 Thumb Divide 7980 12.5 9.6 130 17.5 12.4 141 Togwotee Pass 9580 20.3 15.3 133 24.2 16.2 149 Two Ocean Plateau 9240 -M 18.3 * -M 17.7 * Willow Creek 8380 21.0 17.8 118 32.1 22.2 145 Younts Peak 8350 15.3 10.0 153 19.0 10.8 176 ----- ----- Basin Index (%) 135 154 MADISON-GALLATIN Black Bear 8170 25.0 23.7 105 33.9 25.5 133 Canyon 7870 11.1 8.4 132 17.3 11.0 157 Madison Plateau 7750 15.4 14.3 108 24.2 17.7 137 West Yellowstone 6700 8.7 7.1 123 16.1 9.9 163 Whiskey Creek 6800 10.1 9.7 104 17.7 13.6 130 ----- ----- Basin Index (%) 111 141 YELLOWSTONE Beartooth Lake 9360 18.4 14.3 129 14.6 13.2 111 Burnt Mtn 5880 5.4 2.6 208 9.6 8.1 119 Canyon 7870 11.1 8.4 132 17.3 11.0 157 Cole Creek 7850 7.1 8.6 83 5.6 7.8 72 Evening Star 9200 22.0 16.7 132 27.2 18.4 148 Fisher Creek 9100 21.4 21.3 100 26.3 21.3 123 Northeast Entrance 7350 7.7 6.6 117 12.9 8.5 152 Parker Peak 9400 19.1 13.4 143 21.3 11.7 182 Sylvan Lake 8420 14.8 13.4 110 25.6 15.2 168 Thumb Divide 7980 12.5 9.6 130 17.5 12.4 141 Two Ocean Plateau 9240 -M 18.3 * -M 17.7 * White Mill 8700 18.1 15.0 121 21.1 15.9 133 Wolverine 7650 -M 7.2 * -M 8.4 * ----- ----- Basin Index (%) 121 139 WIND RIVER Burroughs Creek 8750 13.7 -M * 16.2 -M * Castle Creek 8400 7.8 -M * 10.0 -M * Cold Springs 9630 7.1 4.8 148 9.2 6.4 144 Deer Park 9700 18.6 9.5 196 22.4 12.6 178 Hobbs Park 10100 13.1 8.0 164 12.7 8.0 159 Kirwin 9550 11.3 6.0 188 14.2 7.4 192 Little Warm 9370 8.3 6.6 126 13.4 8.4 160 Owl Creek 8975 4.6 3.1 148 6.1 3.6 169 South Pass 9040 17.9 9.7 185 16.8 11.2 150 St. Lawrence Alt 8620 3.8 4.2 90 7.8 5.5 142 Togwotee Pass 9580 20.3 15.3 133 24.2 16.2 149 Townsend Creek 8700 7.3 5.4 135 10.2 7.3 140 ----- ----- Basin Index (%) 155 158 BIGHORN BASIN Bald Mtn. 9380 13.2 11.0 120 11.6 11.0 105 Bear Trap Meadow 8200 3.4 3.5 97 5.0 5.3 94 Bone Springs Div 9350 10.5 9.9 106 10.8 9.8 110 Grave Springs 8550 3.9 5.0 78 4.9 6.6 74 Kirwin 9550 11.3 6.0 188 14.2 7.4 192 Marquette 8760 5.6 -M * 9.4 -M * Middle Powder 7760 4.8 6.5 74 5.4 7.6 71 Owl Creek 8975 4.6 3.1 148 6.1 3.6 169 Powder River Pass 9480 4.1 6.8 60 7.0 8.1 86 Shell Creek 9580 10.8 9.3 116 8.6 9.1 95 Timber Creek 7950 4.0 3.1 129 5.3 4.6 115 ----- ----- Basin Index (%) 110 108 SHOSHONE RIVER Blackwater 9780 22.7 15.0 151 24.4 13.6 179 Evening Star 9200 22.0 16.7 132 27.2 18.4 148 Marquette 8760 5.6 -M * 9.4 -M * Sylvan Road 7120 11.3 7.9 143 21.4 12.1 177 Younts Peak 8350 15.3 10.0 153 19.0 10.8 176 ----- ----- Basin Index (%) 144 168 POWDER RIVER Bear Trap Meadow 8200 3.4 3.5 97 5.0 5.3 94 Cloud Peak Reservoir 9860 7.9 8.6 92 9.6 8.1 119 Grave Springs 8550 3.9 5.0 78 4.9 6.6 74 Hansen Sawmill 8360 5.4 4.0 135 7.2 5.2 138 Middle Powder 7760 4.8 6.5 74 5.4 7.6 71 Powder River Pass 9480 4.1 6.8 60 7.0 8.1 86 Soldier Park 8720 8.5 -M * 7.3 -M * ----- ----- Basin Index (%) 86 96 TONGUE RIVER Big Goose 7990 5.9 5.0 118 6.9 6.7 103 Bone Springs Div 9350 10.5 9.9 106 10.8 9.8 110 Burgess Junction 7880 6.4 6.8 94 7.7 7.7 100 Dome Lake 8880 7.1 7.0 101 8.7 8.6 101 Little Goose 8870 6.4 -M * 8.5 -M * Sucker Creek 8880 7.3 7.3 100 7.6 8.9 85 Tie Creek 6870 4.4 3.5 126 7.7 7.3 105 ----- ----- Basin Index (%) 105 101 BELLE FOURCHE Cole Canyon 5910 3.6 3.4 106 4.7 5.8 81 ----- ----- Basin Index (%) 106 81 CHEYENNE RIVER BASIN Blind Park 6890 4.7 5.0 94 5.8 8.0 72 North Rapid Creek 6130 4.7 4.4 107 5.1 6.5 78 ----- ----- Basin Index (%) 100 75 UPPER N. PLATTE Arapaho Ridge 10960 20.0 13.5 148 20.6 14.6 141 Blackhall Mtn 9820 26.9 -M * 27.6 -M * Columbine 9160 20.1 15.2 132 22.2 16.8 132 Divide Peak 8880 13.8 12.8 108 16.3 14.0 116 Joe Wright 10120 15.1 13.2 114 21.0 16.5 127 Laprele Creek 8375 7.3 5.6 130 7.0 7.7 91 Med Bow 10500 27.5 -M * 25.7 -M * North French Creek 10130 17.6 16.4 107 19.1 17.3 110 Never Summer 10280 16.7 12.9 129 14.2 -M * Old Battle 10000 26.4 19.8 133 27.9 23.1 121 Rawah 9020 10.2 6.5 157 13.0 9.3 140 Sage Creek Basin 7850 11.3 8.8 128 11.8 10.1 117 Sand Lake 10050 20.4 16.9 121 19.4 15.5 125 South Brush Creek 8440 7.5 7.5 100 8.9 9.8 91 Tower 10500 33.0 28.5 116 34.5 26.2 132 Webber Springs 9250 21.2 14.6 145 24.9 17.5 142 Willow Creek Pass 9540 -M 7.9 * -M 8.5 * Zirkel 9340 30.2 19.1 158 32.2 19.7 163 ----- ----- Basin Index (%) 128 128 SWEETWATER Deer Park 9700 18.6 9.5 196 22.4 12.6 178 Larsen Creek 9000 13.2 7.6 174 16.4 -M * South Pass 9040 17.9 9.7 185 16.8 11.2 150 ----- ----- Basin Index (%) 185 165 LOWER N. PLATTE Casper Mtn. 7900 6.8 7.8 87 7.0 9.3 75 Laprele Creek 8375 7.3 5.6 130 7.0 7.7 91 Reno Hill 8400 7.6 7.9 96 8.0 9.2 87 Windy Peak 7900 5.9 4.3 137 6.6 6.5 102 ----- ----- Basin Index (%) 108 87 LARAMIE RIVER Brooklyn Lake 10240 17.5 12.1 145 15.9 13.3 120 Cinnabar Park 9574 14.0 13.6 103 16.7 16.6 101 Crow Creek 8330 4.1 5.7 72 6.0 6.5 92 Deadman Hill 10220 15.0 10.4 144 14.7 10.5 140 Rawah 9020 10.2 6.5 157 13.0 9.3 140 Roach 9700 12.8 10.3 124 15.2 12.1 126 ----- ----- Basin Index (%) 126 119 S. PLATTE Black Mountain 8920 7.3 -M * 8.6 -M * Crow Creek 8330 4.1 5.7 72 6.0 6.5 92 Deadman Hill 10220 15.0 10.4 144 14.7 10.5 140 ----- ----- Basin Index (%) 119 122 LITTLE SNAKE RIVER Battle Mountain 7440 8.8 7.3 121 11.9 9.9 120 Divide Peak 8880 13.8 12.8 108 16.3 14.0 116 Elk River 8700 15.9 11.9 134 15.9 13.2 120 Little Snake River 8915 23.9 16.1 148 28.6 21.4 134 Old Battle 10000 26.4 19.8 133 27.9 23.1 121 Sage Creek Basin 7850 11.3 8.8 128 11.8 10.1 117 Sandstone RS 8150 10.8 8.3 130 12.0 12.3 98 Whiskey Park 8950 20.9 16.8 124 23.2 18.4 126 ----- ----- Basin Index (%) 129 121 UPPER GREEN RIVER Big Sandy Opening 9080 14.1 8.5 166 16.3 8.6 190 Blind Bull Sum 8650 25.1 14.5 173 -M 13.2 * East Rim Divide 7930 12.2 6.9 177 14.3 7.9 181 Elkhart Park G.S. 9400 11.1 7.7 144 16.3 8.7 187 Gros Ventre Summit 8750 10.9 8.6 127 15.2 8.4 181 Gunsight Pass 9820 11.8 8.5 139 15.6 9.2 170 Kendall R.S. 7740 14.7 7.8 188 19.0 9.5 200 Loomis Park 8240 16.9 9.8 172 21.6 11.6 186 New Fork Lake 8340 11.2 6.8 165 11.4 7.3 156 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 13.2 7.9 167 17.8 9.5 187 Spring Creek Divide 9000 22.5 15.1 149 25.1 15.9 158 Triple Peak 8500 23.8 13.5 176 24.1 16.5 146 ----- ----- Basin Index (%) 162 174 LOWER GREEN RIVER Blacks Fork Jct 8870 8.3 -M * 10.7 -M * Buck Pasture 9700 14.0 -M * 16.6 -M * EF Blacks Fork GS 9360 10.0 -M * 9.7 -M * Hams Fork 7840 12.0 7.4 162 13.8 7.5 184 Hewinta 9519 8.8 6.1 144 11.1 8.9 125 Hickerson Park 9145 6.1 3.9 156 6.3 6.3 100 Hole-in-Rock 9150 5.0 4.1 122 6.8 5.9 115 Indian Creek 9425 22.8 14.8 154 -M 14.5 * Kelley R.S. 8180 16.1 9.3 173 21.2 11.9 178 Spirit Lk 10235 9.8 -M * 11.5 -M * Steel Creek Park 10200 12.0 9.0 133 13.7 10.3 133 ----- ----- Basin Index (%) 152 144 UPPER BEAR RIVER Bear River RS 8777 10.0 -M * 12.0 -M * Bug Lake 7950 22.1 11.6 191 20.9 12.8 163 Burts Miller Ranch 8000 5.6 -M * 6.1 -M * Chalk Creek #1 8993 22.4 13.5 166 23.7 16.1 147 Hayden Fork 9212 16.0 8.9 180 20.9 13.5 155 Kelley R.S. 8180 16.1 9.3 173 21.2 11.9 178 Lily Lake 9156 10.9 7.6 143 13.4 11.0 122 Monte Cristo 8960 22.5 16.2 139 -M 16.8 * Salt River Summit 7760 13.5 8.2 165 19.1 10.9 175 ----- ----- Basin Index (%) 164 156 ----------------------------------------------------------------------------- -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.