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 THURSDAY: JANUARY 19 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.2 9.8 155 22.9 12.4 185 Black Bear 8170 21.2 21.3 100 30.3 21.9 138 Blind Bull Sum 8650 21.6 12.5 173 -M 11.6 * Cottonwood Creek 7670 14.8 10.9 136 20.9 14.2 147 East Rim Divide 7930 10.2 5.9 173 12.5 6.9 181 Grand Targhee 9260 27.1 21.4 127 25.4 18.1 140 Granite Creek 6770 14.9 9.0 166 20.6 12.0 172 Grassy Lake 7265 22.1 17.2 128 33.3 21.2 157 Gros Ventre Summit 8750 9.3 7.6 122 13.6 7.4 184 Gunsight Pass 9820 10.1 7.6 133 14.1 8.0 176 Lewis Lake Divide 7850 19.1 17.0 112 30.9 20.7 149 Phillips Bench 8200 17.3 15.3 113 26.4 16.2 163 Salt River Summit 7760 11.1 6.6 168 16.5 9.5 174 Snake River Station 6920 13.8 9.3 148 21.9 13.7 160 Spring Creek Divide 9000 19.2 12.5 154 22.6 13.8 164 Thumb Divide 7980 10.0 8.2 122 15.4 10.9 141 Togwotee Pass 9580 17.5 13.1 134 21.3 14.3 149 Two Ocean Plateau 9240 23.2 15.6 149 23.6 15.6 151 Willow Creek 8380 18.5 14.8 125 27.8 19.3 144 Younts Peak 8350 12.3 8.7 141 16.7 9.5 176 ----- ----- Basin Index (%) 134 157 MADISON-GALLATIN Black Bear 8170 21.2 21.3 100 30.3 21.9 138 Canyon 7870 9.1 7.4 123 15.4 9.5 162 Madison Plateau 7750 12.7 13.0 98 22.0 15.4 143 West Yellowstone 6700 7.2 6.5 111 14.7 8.5 173 Whiskey Creek 6800 8.2 8.6 95 16.1 11.9 135 ----- ----- Basin Index (%) 103 147 YELLOWSTONE Beartooth Lake 9360 15.2 12.6 121 11.7 11.5 102 Burnt Mtn 5880 4.5 2.3 196 8.4 7.4 114 Canyon 7870 9.1 7.4 123 15.4 9.5 162 Cole Creek 7850 6.1 7.4 82 5.3 7.1 75 Evening Star 9200 18.3 14.3 128 24.6 16.2 152 Fisher Creek 9100 17.8 18.8 95 23.0 18.5 124 Northeast Entrance 7350 6.4 5.5 116 11.6 7.5 155 Parker Peak 9400 16.1 11.8 136 18.9 10.3 183 Sylvan Lake 8420 12.3 11.4 108 22.9 13.4 171 Thumb Divide 7980 10.0 8.2 122 15.4 10.9 141 Two Ocean Plateau 9240 23.2 15.6 149 23.6 15.6 151 White Mill 8700 14.7 13.2 111 18.0 13.9 129 Wolverine 7650 -M 6.1 * -M 7.5 * ----- ----- Basin Index (%) 120 140 WIND RIVER Burroughs Creek 8750 11.8 -M * 14.6 -M * Castle Creek 8400 6.6 -M * 8.8 -M * Cold Springs 9630 6.0 4.2 143 8.6 5.8 148 Deer Park 9700 17.3 7.6 228 20.8 11.2 186 Hobbs Park 10100 12.0 7.4 162 12.0 7.2 167 Kirwin 9550 9.6 5.3 181 12.7 6.7 190 Little Warm 9370 6.6 5.7 116 11.8 7.4 159 Owl Creek 8975 3.6 3.0 120 5.2 3.3 158 South Pass 9040 16.5 8.0 206 16.2 9.9 164 St. Lawrence Alt 8620 3.2 3.6 89 7.1 4.9 145 Togwotee Pass 9580 17.5 13.1 134 21.3 14.3 149 Townsend Creek 8700 6.3 4.5 140 9.3 6.6 141 ----- ----- Basin Index (%) 158 162 BIGHORN BASIN Bald Mtn. 9380 11.8 10.0 118 10.7 9.7 110 Bear Trap Meadow 8200 2.9 3.0 97 4.5 4.7 96 Bone Springs Div 9350 9.1 8.9 102 9.7 8.7 111 Grave Springs 8550 3.4 4.5 76 4.6 5.9 78 Kirwin 9550 9.6 5.3 181 12.7 6.7 190 Marquette 8760 4.6 -M * 8.0 -M * Middle Powder 7760 4.2 6.0 70 5.1 6.8 75 Owl Creek 8975 3.6 3.0 120 5.2 3.3 158 Powder River Pass 9480 3.4 5.8 59 6.6 7.1 93 Shell Creek 9580 9.8 8.5 115 8.0 7.9 101 Timber Creek 7950 3.4 2.8 121 4.7 4.3 109 ----- ----- Basin Index (%) 106 110 SHOSHONE RIVER Blackwater 9780 19.2 13.0 148 22.9 12.0 191 Evening Star 9200 18.3 14.3 128 24.6 16.2 152 Marquette 8760 4.6 -M * 8.0 -M * Sylvan Road 7120 9.1 7.0 130 19.4 10.8 180 Younts Peak 8350 12.3 8.7 141 16.7 9.5 176 ----- ----- Basin Index (%) 137 172 POWDER RIVER Bear Trap Meadow 8200 2.9 3.0 97 4.5 4.7 96 Cloud Peak Reservoir 9860 6.8 7.5 91 8.9 7.3 122 Grave Springs 8550 3.4 4.5 76 4.6 5.9 78 Hansen Sawmill 8360 4.4 3.6 122 6.2 4.6 135 Middle Powder 7760 4.2 6.0 70 5.1 6.8 75 Powder River Pass 9480 3.4 5.8 59 6.6 7.1 93 Soldier Park 8720 7.1 -M * 6.5 -M * ----- ----- Basin Index (%) 83 99 TONGUE RIVER Big Goose 7990 5.1 4.4 116 6.1 6.0 102 Bone Springs Div 9350 9.1 8.9 102 9.7 8.7 111 Burgess Junction 7880 5.2 6.1 85 6.6 6.9 96 Dome Lake 8880 6.3 6.3 100 7.8 7.7 101 Little Goose 8870 5.4 -M * 7.7 -M * Sucker Creek 8880 6.1 6.5 94 6.8 7.9 86 Tie Creek 6870 3.7 2.9 128 6.8 6.6 103 ----- ----- Basin Index (%) 101 100 BELLE FOURCHE Cole Canyon 5910 3.2 2.9 110 4.2 5.3 79 ----- ----- Basin Index (%) 110 79 CHEYENNE RIVER BASIN Blind Park 6890 3.7 4.1 90 4.8 7.1 68 North Rapid Creek 6130 4.0 3.8 105 4.3 5.8 74 ----- ----- Basin Index (%) 97 71 UPPER N. PLATTE Arapaho Ridge 10960 17.7 11.2 158 18.6 12.9 144 Blackhall Mtn 9820 23.3 -M * 24.5 -M * Columbine 9160 17.5 12.7 138 18.8 14.5 130 Divide Peak 8880 11.9 10.8 110 14.5 12.4 117 Joe Wright 10120 13.8 11.7 118 19.6 14.4 136 Laprele Creek 8375 6.4 5.1 125 6.2 6.9 90 Med Bow 10500 24.4 -M * 23.5 -M * North French Creek 10130 15.3 14.3 107 17.0 15.0 113 Never Summer 10280 -M 10.8 * -M -M * Old Battle 10000 22.7 16.1 141 24.8 20.1 123 Rawah 9020 9.3 5.6 166 11.8 8.5 139 Sage Creek Basin 7850 9.7 7.4 131 10.2 8.8 116 Sand Lake 10050 18.2 14.7 124 17.7 13.6 130 South Brush Creek 8440 6.4 6.3 102 7.7 8.6 90 Tower 10500 27.5 23.6 117 30.5 22.7 134 Webber Springs 9250 18.0 12.1 149 22.0 15.2 145 Willow Creek Pass 9540 12.4 6.4 194 13.2 7.5 176 Zirkel 9340 25.5 16.0 159 26.4 16.8 157 ----- ----- Basin Index (%) 134 131 SWEETWATER Deer Park 9700 17.3 7.6 228 20.8 11.2 186 Larsen Creek 9000 11.6 6.3 184 15.1 -M * South Pass 9040 16.5 8.0 206 16.2 9.9 164 ----- ----- Basin Index (%) 207 175 LOWER N. PLATTE Casper Mtn. 7900 5.9 6.8 87 6.2 8.3 75 Laprele Creek 8375 6.4 5.1 125 6.2 6.9 90 Reno Hill 8400 -M 6.8 * -M 8.2 * Windy Peak 7900 5.0 3.8 132 5.8 5.9 98 ----- ----- Basin Index (%) 110 86 LARAMIE RIVER Brooklyn Lake 10240 15.2 11.1 137 14.2 11.4 125 Cinnabar Park 9574 12.5 11.7 107 15.3 14.4 106 Crow Creek 8330 4.0 5.2 77 5.7 6.1 93 Deadman Hill 10220 13.6 8.5 160 13.5 9.3 145 Rawah 9020 9.3 5.6 166 11.8 8.5 139 Roach 9700 11.6 9.0 129 13.8 10.7 129 ----- ----- Basin Index (%) 130 123 S. PLATTE Black Mountain 8920 7.0 -M * 8.2 -M * Crow Creek 8330 4.0 5.2 77 5.7 6.1 93 Deadman Hill 10220 13.6 8.5 160 13.5 9.3 145 ----- ----- Basin Index (%) 128 125 LITTLE SNAKE RIVER Battle Mountain 7440 7.9 5.9 134 -M 8.7 * Divide Peak 8880 11.9 10.8 110 14.5 12.4 117 Elk River 8700 14.7 9.6 153 14.8 11.4 130 Little Snake River 8915 20.5 12.6 163 26.2 18.2 144 Old Battle 10000 22.7 16.1 141 24.8 20.1 123 Sage Creek Basin 7850 9.7 7.4 131 10.2 8.8 116 Sandstone RS 8150 9.9 7.1 139 10.7 10.7 100 Whiskey Park 8950 17.7 14.2 125 20.7 15.7 132 ----- ----- Basin Index (%) 137 125 UPPER GREEN RIVER Big Sandy Opening 9080 12.5 7.0 179 14.8 7.6 195 Blind Bull Sum 8650 21.6 12.5 173 -M 11.6 * East Rim Divide 7930 10.2 5.9 173 12.5 6.9 181 Elkhart Park G.S. 9400 9.3 6.7 139 14.6 7.7 190 Gros Ventre Summit 8750 9.3 7.6 122 13.6 7.4 184 Gunsight Pass 9820 10.1 7.6 133 14.1 8.0 176 Kendall R.S. 7740 11.9 6.7 178 16.2 8.2 198 Loomis Park 8240 14.2 8.2 173 19.4 10.1 192 New Fork Lake 8340 9.4 5.9 159 9.9 6.4 155 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 11.4 6.5 175 16.0 8.2 195 Spring Creek Divide 9000 19.2 12.5 154 22.6 13.8 164 Triple Peak 8500 20.9 11.6 180 -M 14.2 * ----- ----- Basin Index (%) 162 182 LOWER GREEN RIVER Blacks Fork Jct 8870 7.7 -M * 9.7 -M * Buck Pasture 9700 11.9 -M * 14.7 -M * EF Blacks Fork GS 9360 8.5 -M * 9.3 -M * Hams Fork 7840 10.2 6.1 167 12.3 6.6 186 Hewinta 9519 8.0 5.0 160 10.3 7.8 132 Hickerson Park 9145 5.5 3.2 172 5.9 5.7 104 Hole-in-Rock 9150 4.5 3.6 125 6.4 5.3 121 Indian Creek 9425 19.9 13.0 153 -M 12.5 * Kelley R.S. 8180 13.8 7.7 179 19.0 10.4 183 Spirit Lk 10235 8.3 -M * 10.1 -M * Steel Creek Park 10200 10.9 7.5 145 12.7 8.9 143 ----- ----- Basin Index (%) 158 149 UPPER BEAR RIVER Bear River RS 8777 8.9 -M * 10.7 -M * Bug Lake 7950 19.1 8.9 215 19.5 11.1 176 Burts Miller Ranch 8000 4.8 -M * 5.6 -M * Chalk Creek #1 8993 19.5 11.9 164 20.9 14.0 149 Hayden Fork 9212 13.9 7.5 185 18.3 11.7 156 Kelley R.S. 8180 13.8 7.7 179 19.0 10.4 183 Lily Lake 9156 10.2 6.6 155 12.1 9.6 126 Monte Cristo 8960 18.7 13.8 136 21.1 14.6 145 Salt River Summit 7760 11.1 6.6 168 16.5 9.5 174 ----- ----- Basin Index (%) 169 157 ----------------------------------------------------------------------------- -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.