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: JANUARY 30 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.5 10.7 145 23.4 13.8 170 Black Bear 8170 22.5 23.2 97 31.6 24.6 128 Blind Bull Sum 8650 22.5 13.6 165 16.0 12.6 127 Cottonwood Creek 7670 16.4 12.5 131 22.6 15.6 145 East Rim Divide 7930 11.0 6.7 164 13.2 7.6 174 Grand Targhee 9260 28.6 23.4 122 26.4 20.5 129 Granite Creek 6770 15.8 10.2 155 20.9 13.4 156 Grassy Lake 7265 23.5 19.8 119 34.7 23.6 147 Gros Ventre Summit 8750 9.6 8.2 117 13.9 8.1 172 Gunsight Pass 9820 10.4 8.1 128 14.3 8.7 164 Lewis Lake Divide 7850 20.0 19.6 102 31.7 22.8 139 Phillips Bench 8200 18.7 15.9 118 28.4 18.0 158 Salt River Summit 7760 12.4 7.6 163 17.5 10.5 167 Snake River Station 6920 14.1 10.5 134 23.3 15.2 153 Spring Creek Divide 9000 20.6 14.0 147 23.2 15.2 153 Thumb Divide 7980 10.4 9.5 109 15.9 12.0 132 Togwotee Pass 9580 18.3 14.8 124 22.1 15.6 142 Two Ocean Plateau 9240 23.5 17.1 137 23.9 17.1 140 Willow Creek 8380 20.1 16.9 119 31.1 21.3 146 Younts Peak 8350 12.6 9.4 134 16.9 10.3 164 ----- ----- Basin Index (%) 128 147 MADISON-GALLATIN Black Bear 8170 22.5 23.2 97 31.6 24.6 128 Canyon 7870 9.3 8.0 116 15.7 10.5 150 Madison Plateau 7750 13.7 14.0 98 22.8 17.2 133 West Yellowstone 6700 7.6 7.0 109 15.1 9.5 159 Whiskey Creek 6800 8.8 9.5 93 16.7 13.1 127 ----- ----- Basin Index (%) 100 136 YELLOWSTONE Beartooth Lake 9360 15.5 13.6 114 11.9 12.7 94 Burnt Mtn 5880 4.5 2.4 188 8.6 7.8 110 Canyon 7870 9.3 8.0 116 15.7 10.5 150 Cole Creek 7850 6.2 8.2 76 5.3 7.5 71 Evening Star 9200 18.8 16.0 118 25.2 17.7 142 Fisher Creek 9100 18.3 20.3 90 23.5 20.5 115 Northeast Entrance 7350 6.6 6.3 105 11.8 8.1 146 Parker Peak 9400 16.3 12.8 127 19.1 11.2 171 Sylvan Lake 8420 12.9 12.8 101 23.4 14.6 160 Thumb Divide 7980 10.4 9.5 109 15.9 12.0 132 Two Ocean Plateau 9240 23.5 17.1 137 23.9 17.1 140 White Mill 8700 15.1 14.3 106 18.2 15.2 120 Wolverine 7650 -M 6.9 * -M 8.1 * ----- ----- Basin Index (%) 111 131 WIND RIVER Burroughs Creek 8750 12.3 -M * 15.1 -M * Castle Creek 8400 6.8 -M * 8.8 -M * Cold Springs 9630 6.4 4.4 145 8.9 6.1 146 Deer Park 9700 18.1 9.1 199 21.4 12.1 177 Hobbs Park 10100 12.5 7.9 158 12.6 7.7 164 Kirwin 9550 10.0 5.7 175 13.0 7.2 181 Little Warm 9370 6.8 6.2 110 12.0 8.0 150 Owl Creek 8975 4.1 3.1 132 5.6 3.5 160 South Pass 9040 17.1 8.5 201 16.5 10.8 153 St. Lawrence Alt 8620 3.8 4.1 93 7.7 5.3 145 Togwotee Pass 9580 18.3 14.8 124 22.1 15.6 142 Townsend Creek 8700 7.0 5.1 137 10.0 7.0 143 ----- ----- Basin Index (%) 151 156 BIGHORN BASIN Bald Mtn. 9380 12.3 10.7 115 11.0 10.6 104 Bear Trap Meadow 8200 3.4 3.4 100 4.8 5.1 94 Bone Springs Div 9350 9.5 9.7 98 10.0 9.5 105 Grave Springs 8550 3.8 4.9 78 4.8 6.3 76 Kirwin 9550 10.0 5.7 175 13.0 7.2 181 Marquette 8760 5.0 -M * 8.4 -M * Middle Powder 7760 4.7 6.2 76 5.2 7.3 71 Owl Creek 8975 4.1 3.1 132 5.6 3.5 160 Powder River Pass 9480 3.8 6.3 60 6.8 7.8 87 Shell Creek 9580 10.0 9.0 111 8.2 8.8 93 Timber Creek 7950 3.7 2.9 128 5.0 4.5 111 ----- ----- Basin Index (%) 105 105 SHOSHONE RIVER Blackwater 9780 19.5 14.6 134 23.3 13.1 178 Evening Star 9200 18.8 16.0 118 25.2 17.7 142 Marquette 8760 5.0 -M * 8.4 -M * Sylvan Road 7120 9.4 7.7 122 19.6 11.7 168 Younts Peak 8350 12.6 9.4 134 16.9 10.3 164 ----- ----- Basin Index (%) 126 161 POWDER RIVER Bear Trap Meadow 8200 3.4 3.4 100 4.8 5.1 94 Cloud Peak Reservoir 9860 7.5 8.2 91 9.3 7.8 119 Grave Springs 8550 3.8 4.9 78 4.8 6.3 76 Hansen Sawmill 8360 4.9 4.0 122 6.7 5.0 134 Middle Powder 7760 4.7 6.2 76 5.2 7.3 71 Powder River Pass 9480 3.8 6.3 60 6.8 7.8 87 Soldier Park 8720 7.5 -M * 6.9 -M * ----- ----- Basin Index (%) 85 96 TONGUE RIVER Big Goose 7990 5.4 4.8 112 6.3 6.5 97 Bone Springs Div 9350 9.5 9.7 98 10.0 9.5 105 Burgess Junction 7880 5.5 6.5 85 6.9 7.4 93 Dome Lake 8880 6.5 6.7 97 8.0 8.3 96 Little Goose 8870 5.8 -M * 8.0 -M * Sucker Creek 8880 6.5 7.0 93 7.0 8.6 81 Tie Creek 6870 3.9 3.3 118 7.0 7.0 100 ----- ----- Basin Index (%) 98 96 BELLE FOURCHE Cole Canyon 5910 3.5 3.2 109 4.3 5.6 77 ----- ----- Basin Index (%) 109 77 CHEYENNE RIVER BASIN Blind Park 6890 4.2 4.5 93 5.2 7.6 68 North Rapid Creek 6130 4.5 4.2 107 4.7 6.2 76 ----- ----- Basin Index (%) 100 72 UPPER N. PLATTE Arapaho Ridge 10960 18.7 13.0 144 19.5 13.9 140 Blackhall Mtn 9820 25.3 -M * 26.7 -M * Columbine 9160 19.1 14.4 133 20.8 16.1 129 Divide Peak 8880 13.4 12.1 111 16.0 13.4 119 Joe Wright 10120 14.8 12.8 116 20.7 15.8 131 Laprele Creek 8375 7.1 5.4 131 6.9 7.4 93 Med Bow 10500 26.3 -M * 25.0 -M * North French Creek 10130 16.7 15.8 106 18.3 16.7 110 Never Summer 10280 -M 12.2 * -M -M * Old Battle 10000 25.1 18.9 133 26.5 22.1 120 Rawah 9020 10.0 6.1 164 12.6 9.0 140 Sage Creek Basin 7850 11.2 8.2 137 11.7 9.6 122 Sand Lake 10050 19.4 16.2 120 18.7 14.9 126 South Brush Creek 8440 7.1 7.2 99 8.3 9.4 88 Tower 10500 30.4 27.0 113 32.2 25.1 128 Webber Springs 9250 19.8 13.4 148 23.6 16.8 140 Willow Creek Pass 9540 13.1 7.4 177 13.9 8.2 170 Zirkel 9340 27.6 18.1 152 32.7 18.5 177 ----- ----- Basin Index (%) 129 130 SWEETWATER Deer Park 9700 18.1 9.1 199 21.4 12.1 177 Larsen Creek 9000 12.2 7.1 172 15.6 -M * South Pass 9040 17.1 8.5 201 16.5 10.8 153 ----- ----- Basin Index (%) 192 166 LOWER N. PLATTE Casper Mtn. 7900 6.7 7.4 91 6.9 9.0 77 Laprele Creek 8375 7.1 5.4 131 6.9 7.4 93 Reno Hill 8400 -M 7.6 * -M 8.8 * Windy Peak 7900 5.8 4.1 141 6.5 6.3 103 ----- ----- Basin Index (%) 116 89 LARAMIE RIVER Brooklyn Lake 10240 16.3 11.9 137 15.0 12.7 118 Cinnabar Park 9574 13.2 13.0 102 15.9 15.7 101 Crow Creek 8330 4.2 5.7 74 6.0 6.4 94 Deadman Hill 10220 14.2 9.8 145 14.1 10.1 140 Rawah 9020 10.0 6.1 164 12.6 9.0 140 Roach 9700 12.4 9.8 127 14.7 11.7 126 ----- ----- Basin Index (%) 125 119 S. PLATTE Black Mountain 8920 7.2 -M * 8.5 -M * Crow Creek 8330 4.2 5.7 74 6.0 6.4 94 Deadman Hill 10220 14.2 9.8 145 14.1 10.1 140 ----- ----- Basin Index (%) 119 122 LITTLE SNAKE RIVER Battle Mountain 7440 8.8 6.9 128 7.6 9.5 80 Divide Peak 8880 13.4 12.1 111 16.0 13.4 119 Elk River 8700 15.8 10.9 145 15.8 12.5 126 Little Snake River 8915 22.7 15.2 149 28.3 20.3 139 Old Battle 10000 25.1 18.9 133 26.5 22.1 120 Sage Creek Basin 7850 11.2 8.2 137 11.7 9.6 122 Sandstone RS 8150 10.7 7.9 135 11.7 11.8 99 Whiskey Park 8950 19.6 15.6 126 22.1 17.6 126 ----- ----- Basin Index (%) 133 120 UPPER GREEN RIVER Big Sandy Opening 9080 13.4 8.0 168 15.8 8.3 190 Blind Bull Sum 8650 22.5 13.6 165 16.0 12.6 127 East Rim Divide 7930 11.0 6.7 164 13.2 7.6 174 Elkhart Park G.S. 9400 10.1 7.4 136 15.4 8.4 183 Gros Ventre Summit 8750 9.6 8.2 117 13.9 8.1 172 Gunsight Pass 9820 10.4 8.1 128 14.3 8.7 164 Kendall R.S. 7740 12.4 7.8 159 16.8 9.1 185 Loomis Park 8240 15.2 9.4 162 20.2 11.1 182 New Fork Lake 8340 10.1 6.7 151 10.5 6.9 152 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 12.3 7.4 166 17.1 9.1 188 Spring Creek Divide 9000 20.6 14.0 147 23.2 15.2 153 Triple Peak 8500 22.2 12.9 172 23.4 15.7 149 ----- ----- Basin Index (%) 154 165 LOWER GREEN RIVER Blacks Fork Jct 8870 8.3 -M * 10.5 -M * Buck Pasture 9700 13.8 -M * 16.4 -M * EF Blacks Fork GS 9360 9.2 -M * 9.5 -M * Hams Fork 7840 11.3 7.0 161 13.4 7.2 186 Hewinta 9519 8.8 5.5 160 11.0 8.5 129 Hickerson Park 9145 6.1 3.7 165 6.3 6.0 105 Hole-in-Rock 9150 5.1 3.9 131 6.9 5.7 121 Indian Creek 9425 21.6 14.3 151 -M 13.8 * Kelley R.S. 8180 15.3 8.9 172 20.5 11.4 180 Spirit Lk 10235 9.8 -M * 11.4 -M * Steel Creek Park 10200 11.9 8.5 140 13.5 9.8 138 ----- ----- Basin Index (%) 155 147 UPPER BEAR RIVER Bear River RS 8777 9.8 -M * 11.8 -M * Bug Lake 7950 -M 10.3 * -M 12.2 * Burts Miller Ranch 8000 5.6 -M * 6.0 -M * Chalk Creek #1 8993 21.9 13.3 165 -M 15.5 * Hayden Fork 9212 15.7 8.5 185 -M 12.9 * Kelley R.S. 8180 15.3 8.9 172 20.5 11.4 180 Lily Lake 9156 10.8 7.3 148 13.1 10.5 125 Monte Cristo 8960 22.0 15.7 140 19.9 16.1 124 Salt River Summit 7760 12.4 7.6 163 17.5 10.5 167 ----- ----- Basin Index (%) 160 146* ----------------------------------------------------------------------------- -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.