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: JANUARY 22 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.4 10.1 152 23.2 12.7 183 Black Bear 8170 21.9 22.1 99 31.0 22.7 137 Blind Bull Sum 8650 21.7 12.8 170 -M 11.8 * Cottonwood Creek 7670 15.4 11.4 135 21.6 14.5 149 East Rim Divide 7930 10.2 6.2 165 12.6 7.1 177 Grand Targhee 9260 28.0 21.7 129 25.9 18.5 140 Granite Creek 6770 15.1 9.2 164 20.7 12.4 167 Grassy Lake 7265 22.9 17.8 129 34.3 21.8 157 Gros Ventre Summit 8750 9.4 7.8 121 13.6 7.6 179 Gunsight Pass 9820 10.1 7.8 129 14.1 8.2 172 Lewis Lake Divide 7850 19.5 17.6 111 31.2 21.2 147 Phillips Bench 8200 17.7 15.6 113 26.6 16.6 160 Salt River Summit 7760 11.2 7.1 158 16.6 9.8 169 Snake River Station 6920 14.0 9.4 149 23.2 14.1 165 Spring Creek Divide 9000 19.5 12.7 154 22.6 14.2 159 Thumb Divide 7980 10.2 8.5 120 15.7 11.2 140 Togwotee Pass 9580 17.7 13.3 133 21.5 14.6 147 Two Ocean Plateau 9240 23.3 15.8 147 23.8 16.0 149 Willow Creek 8380 18.9 15.4 123 29.7 19.8 150 Younts Peak 8350 12.3 8.8 140 16.7 9.7 172 ----- ----- Basin Index (%) 133 156 MADISON-GALLATIN Black Bear 8170 21.9 22.1 99 31.0 22.7 137 Canyon 7870 9.2 7.6 121 15.5 9.9 157 Madison Plateau 7750 13.0 13.4 97 22.3 15.9 140 West Yellowstone 6700 7.4 6.6 112 14.9 8.8 169 Whiskey Creek 6800 8.5 8.9 96 16.4 12.2 134 ----- ----- Basin Index (%) 102 144 YELLOWSTONE Beartooth Lake 9360 15.3 12.8 120 11.7 11.7 100 Burnt Mtn 5880 4.4 2.3 191 8.4 7.5 112 Canyon 7870 9.2 7.6 121 15.5 9.9 157 Cole Creek 7850 6.1 7.6 80 5.2 7.2 72 Evening Star 9200 18.2 14.5 126 24.6 16.5 149 Fisher Creek 9100 18.0 19.3 93 23.1 19.0 122 Northeast Entrance 7350 6.5 5.8 112 11.7 7.6 154 Parker Peak 9400 16.2 12.1 134 19.0 10.5 181 Sylvan Lake 8420 12.6 11.8 107 23.2 13.8 168 Thumb Divide 7980 10.2 8.5 120 15.7 11.2 140 Two Ocean Plateau 9240 23.3 15.8 147 23.8 16.0 149 White Mill 8700 14.9 13.5 110 18.0 14.1 128 Wolverine 7650 -M 6.3 * -M 7.6 * ----- ----- Basin Index (%) 118 138 WIND RIVER Burroughs Creek 8750 11.8 -M * 14.6 -M * Castle Creek 8400 6.6 -M * 8.7 -M * Cold Springs 9630 5.9 4.2 140 8.5 5.8 147 Deer Park 9700 17.2 8.0 215 20.8 11.5 181 Hobbs Park 10100 11.8 7.6 155 11.9 7.3 163 Kirwin 9550 9.5 5.4 176 12.6 6.8 185 Little Warm 9370 6.5 5.8 112 11.7 7.6 154 Owl Creek 8975 3.5 3.0 117 5.1 3.3 155 South Pass 9040 16.4 8.1 202 16.1 10.1 159 St. Lawrence Alt 8620 3.1 3.7 84 7.2 5.0 144 Togwotee Pass 9580 17.7 13.3 133 21.5 14.6 147 Townsend Creek 8700 6.3 4.6 137 9.2 6.7 137 ----- ----- Basin Index (%) 154 158 BIGHORN BASIN Bald Mtn. 9380 12.0 10.1 119 10.5 9.9 106 Bear Trap Meadow 8200 2.9 3.1 94 4.5 4.9 92 Bone Springs Div 9350 9.2 9.2 100 9.7 8.9 109 Grave Springs 8550 3.4 4.6 74 4.4 6.0 73 Kirwin 9550 9.5 5.4 176 12.6 6.8 185 Marquette 8760 4.5 -M * 7.9 -M * Middle Powder 7760 4.4 6.0 73 4.9 6.9 71 Owl Creek 8975 3.5 3.0 117 5.1 3.3 155 Powder River Pass 9480 3.6 5.9 61 6.5 7.3 89 Shell Creek 9580 9.8 8.6 114 8.1 8.1 100 Timber Creek 7950 3.4 2.8 121 4.7 4.3 109 ----- ----- Basin Index (%) 105 107 SHOSHONE RIVER Blackwater 9780 19.1 13.2 145 22.8 12.2 187 Evening Star 9200 18.2 14.5 126 24.6 16.5 149 Marquette 8760 4.5 -M * 7.9 -M * Sylvan Road 7120 9.2 7.2 128 19.3 11.1 174 Younts Peak 8350 12.3 8.8 140 16.7 9.7 172 ----- ----- Basin Index (%) 135 168 POWDER RIVER Bear Trap Meadow 8200 2.9 3.1 94 4.5 4.9 92 Cloud Peak Reservoir 9860 6.9 7.7 90 8.9 7.4 120 Grave Springs 8550 3.4 4.6 74 4.4 6.0 73 Hansen Sawmill 8360 4.5 3.7 122 6.3 4.7 134 Middle Powder 7760 4.4 6.0 73 4.9 6.9 71 Powder River Pass 9480 3.6 5.9 61 6.5 7.3 89 Soldier Park 8720 7.2 -M * 6.5 -M * ----- ----- Basin Index (%) 83 95 TONGUE RIVER Big Goose 7990 5.1 4.4 116 6.1 6.0 102 Bone Springs Div 9350 9.2 9.2 100 9.7 8.9 109 Burgess Junction 7880 5.4 6.2 87 6.6 7.0 94 Dome Lake 8880 6.3 6.4 98 7.7 7.8 99 Little Goose 8870 5.5 -M * 7.7 -M * Sucker Creek 8880 6.2 6.6 94 6.7 8.1 83 Tie Creek 6870 3.7 3.1 119 6.8 6.7 101 ----- ----- Basin Index (%) 100 98 BELLE FOURCHE Cole Canyon 5910 3.1 3.0 103 4.2 5.4 78 ----- ----- Basin Index (%) 103 78 CHEYENNE RIVER BASIN Blind Park 6890 3.7 4.1 90 4.8 7.2 67 North Rapid Creek 6130 3.9 3.9 100 4.2 5.9 71 ----- ----- Basin Index (%) 95 69 UPPER N. PLATTE Arapaho Ridge 10960 18.0 11.4 158 18.8 13.0 145 Blackhall Mtn 9820 23.5 -M * 24.6 -M * Columbine 9160 17.9 13.2 136 19.9 14.8 134 Divide Peak 8880 12.3 11.2 110 14.6 12.6 116 Joe Wright 10120 14.0 12.1 116 19.5 14.8 132 Laprele Creek 8375 6.6 5.3 125 6.2 7.0 89 Med Bow 10500 24.7 -M * 23.6 -M * North French Creek 10130 15.7 14.6 108 17.4 15.4 113 Never Summer 10280 -M 11.1 * -M -M * Old Battle 10000 23.0 16.8 137 24.8 20.6 120 Rawah 9020 9.5 5.7 167 12.1 8.6 141 Sage Creek Basin 7850 9.8 7.5 131 10.4 8.9 117 Sand Lake 10050 18.2 15.2 120 17.7 13.9 127 South Brush Creek 8440 6.8 6.6 103 8.1 8.8 92 Tower 10500 28.2 24.6 115 30.7 23.3 132 Webber Springs 9250 18.1 12.4 146 22.1 15.6 142 Willow Creek Pass 9540 12.6 6.7 188 13.6 7.7 177 Zirkel 9340 25.6 16.4 156 -M 17.0 * ----- ----- Basin Index (%) 131 128 SWEETWATER Deer Park 9700 17.2 8.0 215 20.8 11.5 181 Larsen Creek 9000 11.5 6.5 177 15.0 -M * South Pass 9040 16.4 8.1 202 16.1 10.1 159 ----- ----- Basin Index (%) 200 171 LOWER N. PLATTE Casper Mtn. 7900 5.9 7.0 84 6.2 8.5 73 Laprele Creek 8375 6.6 5.3 125 6.2 7.0 89 Reno Hill 8400 -M 7.1 * -M 8.4 * Windy Peak 7900 5.1 3.9 131 5.8 6.0 97 ----- ----- Basin Index (%) 109 85 LARAMIE RIVER Brooklyn Lake 10240 15.2 11.3 135 14.1 11.8 119 Cinnabar Park 9574 12.6 12.0 105 15.3 14.6 105 Crow Creek 8330 4.0 5.5 73 5.7 6.1 93 Deadman Hill 10220 13.7 8.8 156 13.4 9.5 141 Rawah 9020 9.5 5.7 167 12.1 8.6 141 Roach 9700 11.7 9.4 124 13.9 11.0 126 ----- ----- Basin Index (%) 127 121 S. PLATTE Black Mountain 8920 6.9 -M * 8.2 -M * Crow Creek 8330 4.0 5.5 73 5.7 6.1 93 Deadman Hill 10220 13.7 8.8 156 13.4 9.5 141 ----- ----- Basin Index (%) 124 122 LITTLE SNAKE RIVER Battle Mountain 7440 8.2 6.3 130 10.8 8.9 121 Divide Peak 8880 12.3 11.2 110 14.6 12.6 116 Elk River 8700 14.8 9.9 149 14.8 11.7 126 Little Snake River 8915 21.0 13.2 159 26.3 18.8 140 Old Battle 10000 23.0 16.8 137 24.8 20.6 120 Sage Creek Basin 7850 9.8 7.5 131 10.4 8.9 117 Sandstone RS 8150 10.2 7.3 140 10.9 11.0 99 Whiskey Park 8950 18.2 14.8 123 20.9 16.2 129 ----- ----- Basin Index (%) 135 123 UPPER GREEN RIVER Big Sandy Opening 9080 12.4 7.1 175 14.9 7.7 194 Blind Bull Sum 8650 21.7 12.8 170 -M 11.8 * East Rim Divide 7930 10.2 6.2 165 12.6 7.1 177 Elkhart Park G.S. 9400 9.2 7.0 131 14.6 7.9 185 Gros Ventre Summit 8750 9.4 7.8 121 13.6 7.6 179 Gunsight Pass 9820 10.1 7.8 129 14.1 8.2 172 Kendall R.S. 7740 11.9 6.9 172 16.3 8.4 194 Loomis Park 8240 14.3 8.7 164 19.5 10.3 189 New Fork Lake 8340 9.4 6.3 149 9.9 6.5 152 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 11.5 6.7 172 16.2 8.4 193 Spring Creek Divide 9000 19.5 12.7 154 22.6 14.2 159 Triple Peak 8500 21.2 11.8 180 23.2 14.6 159 ----- ----- Basin Index (%) 158 176 LOWER GREEN RIVER Blacks Fork Jct 8870 7.9 -M * 10.1 -M * Buck Pasture 9700 12.4 -M * 14.9 -M * EF Blacks Fork GS 9360 8.6 -M * 9.4 -M * Hams Fork 7840 10.4 6.5 160 12.3 6.7 184 Hewinta 9519 8.3 5.1 163 10.6 8.0 132 Hickerson Park 9145 5.7 3.3 173 5.9 5.7 104 Hole-in-Rock 9150 4.7 3.7 127 6.6 5.4 122 Indian Creek 9425 20.1 13.5 149 -M 12.8 * Kelley R.S. 8180 14.0 8.1 173 19.2 10.6 181 Spirit Lk 10235 8.7 -M * 10.3 -M * Steel Creek Park 10200 11.2 7.7 145 12.8 9.2 139 ----- ----- Basin Index (%) 155 148 UPPER BEAR RIVER Bear River RS 8777 9.0 -M * 11.0 -M * Bug Lake 7950 -M 9.2 * -M 11.4 * Burts Miller Ranch 8000 5.2 -M * 5.6 -M * Chalk Creek #1 8993 20.2 12.1 167 -M 14.3 * Hayden Fork 9212 14.0 7.8 179 18.5 12.0 154 Kelley R.S. 8180 14.0 8.1 173 19.2 10.6 181 Lily Lake 9156 10.6 6.8 156 12.3 9.9 124 Monte Cristo 8960 19.6 14.1 139 19.7 15.0 131 Salt River Summit 7760 11.2 7.1 158 16.6 9.8 169 ----- ----- Basin Index (%) 160 151 ----------------------------------------------------------------------------- -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.