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 9 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 12.0 8.3 145 19.8 11.2 177 Black Bear 8170 17.3 19.4 89 26.9 20.0 134 Blind Bull Sum 8650 16.2 10.8 150 15.7 10.3 152 Cottonwood Creek 7670 11.6 9.2 126 18.7 12.6 148 East Rim Divide 7930 8.4 5.0 168 11.0 6.2 177 Grand Targhee 9260 25.7 20.0 128 23.6 17.1 138 Granite Creek 6770 11.8 7.3 162 18.0 10.7 168 Grassy Lake 7265 17.3 14.8 117 29.1 19.2 152 Gros Ventre Summit 8750 7.5 6.9 109 11.7 6.7 175 Gunsight Pass 9820 8.2 6.9 119 12.5 7.2 174 Lewis Lake Divide 7850 14.6 15.0 97 26.0 18.8 138 Phillips Bench 8200 13.6 12.7 107 23.1 14.6 158 Salt River Summit 7760 7.2 5.5 131 13.2 8.5 155 Snake River Station 6920 11.3 7.8 145 20.1 12.4 162 Spring Creek Divide 9000 14.8 11.0 135 19.9 12.3 162 Thumb Divide 7980 7.6 7.1 107 13.6 9.8 139 Togwotee Pass 9580 15.4 12.2 126 19.1 12.9 148 Two Ocean Plateau 9240 19.1 14.2 135 20.3 14.1 144 Willow Creek 8380 13.7 12.5 110 24.7 17.4 142 Younts Peak 8350 9.3 7.5 124 13.9 8.6 162 ----- ----- Basin Index (%) 123 152 MADISON-GALLATIN Black Bear 8170 17.3 19.4 89 26.9 20.0 134 Canyon 7870 7.6 6.4 119 13.8 8.7 159 Madison Plateau 7750 10.2 11.1 92 20.0 14.1 142 West Yellowstone 6700 6.4 5.5 116 13.7 7.9 173 Whiskey Creek 6800 6.8 7.8 87 14.1 10.9 129 ----- ----- Basin Index (%) 96 144 YELLOWSTONE Beartooth Lake 9360 13.0 11.1 117 10.3 10.3 100 Burnt Mtn 5880 3.9 1.9 205 7.9 7.1 111 Canyon 7870 7.6 6.4 119 13.8 8.7 159 Cole Creek 7850 5.5 6.6 83 5.2 6.7 78 Evening Star 9200 15.4 12.8 120 21.6 14.7 147 Fisher Creek 9100 15.0 16.8 89 20.3 16.8 121 Northeast Entrance 7350 5.2 4.9 106 10.5 6.8 154 Parker Peak 9400 13.6 11.1 123 16.6 9.4 177 Sylvan Lake 8420 10.4 10.4 100 20.9 12.2 171 Thumb Divide 7980 7.6 7.1 107 13.6 9.8 139 Two Ocean Plateau 9240 19.1 14.2 135 20.3 14.1 144 White Mill 8700 12.3 11.4 108 15.9 12.6 126 Wolverine 7650 7.7 5.5 140 11.4 6.8 168 ----- ----- Basin Index (%) 113 138 WIND RIVER Burroughs Creek 8750 9.5 -M * 12.0 -M * Castle Creek 8400 5.6 -M * 7.8 -M * Cold Springs 9630 5.0 3.6 139 7.6 5.3 143 Deer Park 9700 11.5 7.0 164 15.4 10.0 154 Hobbs Park 10100 9.5 7.1 134 10.0 6.7 149 Kirwin 9550 7.8 4.7 166 10.7 6.1 175 Little Warm 9370 5.3 5.0 106 10.2 6.7 152 Owl Creek 8975 3.1 2.8 111 4.5 3.1 145 South Pass 9040 10.6 7.1 149 10.5 9.1 115 St. Lawrence Alt 8620 2.6 3.3 79 6.4 4.6 139 Togwotee Pass 9580 15.4 12.2 126 19.1 12.9 148 Townsend Creek 8700 4.9 4.2 117 7.8 6.2 126 ----- ----- Basin Index (%) 133 145 BIGHORN BASIN Bald Mtn. 9380 10.7 9.4 114 9.7 8.7 111 Bear Trap Meadow 8200 2.8 2.7 104 4.5 4.4 102 Bone Springs Div 9350 8.0 7.9 101 8.6 7.8 110 Grave Springs 8550 3.2 3.9 82 4.7 5.5 85 Kirwin 9550 7.8 4.7 166 10.7 6.1 175 Marquette 8760 3.9 -M * 7.5 -M * Middle Powder 7760 4.0 5.4 74 5.0 6.4 78 Owl Creek 8975 3.1 2.8 111 4.5 3.1 145 Powder River Pass 9480 2.9 5.4 54 6.1 6.6 92 Shell Creek 9580 8.9 7.5 119 7.4 7.2 103 Timber Creek 7950 3.2 2.3 139 4.5 4.1 110 ----- ----- Basin Index (%) 105 110 SHOSHONE RIVER Blackwater 9780 16.4 11.7 140 20.3 10.9 186 Evening Star 9200 15.4 12.8 120 21.6 14.7 147 Marquette 8760 3.9 -M * 7.5 -M * Sylvan Road 7120 7.5 6.0 125 17.4 9.9 176 Younts Peak 8350 9.3 7.5 124 13.9 8.6 162 ----- ----- Basin Index (%) 128 166 POWDER RIVER Bear Trap Meadow 8200 2.8 2.7 104 4.5 4.4 102 Cloud Peak Reservoir 9860 6.0 6.7 90 8.1 6.7 121 Grave Springs 8550 3.2 3.9 82 4.7 5.5 85 Hansen Sawmill 8360 3.9 3.3 118 5.7 4.3 133 Middle Powder 7760 4.0 5.4 74 5.0 6.4 78 Powder River Pass 9480 2.9 5.4 54 6.1 6.6 92 Soldier Park 8720 6.7 -M * 6.2 -M * ----- ----- Basin Index (%) 83 101 TONGUE RIVER Big Goose 7990 4.7 4.0 118 5.7 5.6 102 Bone Springs Div 9350 8.0 7.9 101 8.6 7.8 110 Burgess Junction 7880 4.5 5.1 88 6.3 6.3 100 Dome Lake 8880 5.5 5.7 96 7.2 7.2 100 Little Goose 8870 5.0 -M * 7.2 -M * Sucker Creek 8880 5.4 5.8 93 6.3 7.2 88 Tie Creek 6870 3.3 2.3 143 6.3 6.0 105 ----- ----- Basin Index (%) 102 101 BELLE FOURCHE Cole Canyon 5910 3.0 2.4 125 4.1 4.9 84 ----- ----- Basin Index (%) 125 84 CHEYENNE RIVER BASIN Blind Park 6890 3.5 3.8 92 4.6 6.5 71 North Rapid Creek 6130 3.7 3.4 109 4.0 5.4 74 ----- ----- Basin Index (%) 100 72 UPPER N. PLATTE Arapaho Ridge 10960 14.6 10.6 138 15.8 12.1 131 Blackhall Mtn 9820 17.1 -M * 18.9 -M * Columbine 9160 14.2 10.6 134 16.6 12.9 129 Divide Peak 8880 9.0 9.6 94 11.6 11.3 103 Joe Wright 10120 10.7 10.4 103 16.3 13.3 123 Laprele Creek 8375 5.5 4.4 125 5.4 6.4 84 Med Bow 10500 20.2 -M * 19.9 -M * North French Creek 10130 12.8 12.9 99 14.6 13.4 109 Never Summer 10280 -M 10.0 * -M -M * Old Battle 10000 16.3 14.6 112 18.0 18.1 99 Rawah 9020 7.5 5.1 147 10.3 8.0 129 Sage Creek Basin 7850 7.5 6.6 114 8.0 8.2 98 Sand Lake 10050 14.4 13.3 108 14.0 12.3 114 South Brush Creek 8440 5.7 5.5 104 7.1 7.9 90 Tower 10500 20.6 20.1 102 23.7 20.4 116 Webber Springs 9250 13.0 11.0 118 16.5 13.7 120 Willow Creek Pass 9540 9.3 6.0 155 10.4 7.0 149 Zirkel 9340 18.9 12.8 148 21.7 15.6 139 ----- ----- Basin Index (%) 117 116 SWEETWATER Deer Park 9700 11.5 7.0 164 15.4 10.0 154 Larsen Creek 9000 8.9 5.5 162 12.7 -M * South Pass 9040 10.6 7.1 149 10.5 9.1 115 ----- ----- Basin Index (%) 158 136 LOWER N. PLATTE Casper Mtn. 7900 5.6 6.5 86 6.0 7.9 76 Laprele Creek 8375 5.5 4.4 125 5.4 6.4 84 Reno Hill 8400 -M 6.3 * -M 7.7 * Windy Peak 7900 4.1 3.2 128 5.2 5.5 95 ----- ----- Basin Index (%) 108 84 LARAMIE RIVER Brooklyn Lake 10240 11.9 9.4 127 11.2 10.2 110 Cinnabar Park 9574 10.1 10.7 94 12.9 13.3 97 Crow Creek 8330 3.8 4.8 79 5.4 5.9 92 Deadman Hill 10220 10.5 7.7 136 10.5 8.5 124 Rawah 9020 7.5 5.1 147 10.3 8.0 129 Roach 9700 8.2 7.7 106 9.9 9.8 101 ----- ----- Basin Index (%) 115 108 S. PLATTE Black Mountain 8920 5.6 -M * 6.9 -M * Crow Creek 8330 3.8 4.8 79 5.4 5.9 92 Deadman Hill 10220 10.5 7.7 136 10.5 8.5 124 ----- ----- Basin Index (%) 114 110 LITTLE SNAKE RIVER Battle Mountain 7440 6.8 4.9 139 9.6 7.9 122 Divide Peak 8880 9.0 9.6 94 11.6 11.3 103 Elk River 8700 11.4 8.2 139 12.2 10.2 120 Little Snake River 8915 15.7 10.8 145 21.0 16.5 127 Old Battle 10000 16.3 14.6 112 18.0 18.1 99 Sage Creek Basin 7850 7.5 6.6 114 8.0 8.2 98 Sandstone RS 8150 7.8 5.6 139 8.2 9.6 85 Whiskey Park 8950 14.6 10.9 134 17.6 13.7 128 ----- ----- Basin Index (%) 125 111 UPPER GREEN RIVER Big Sandy Opening 9080 10.2 6.8 150 12.9 7.0 184 Blind Bull Sum 8650 16.2 10.8 150 15.7 10.3 152 East Rim Divide 7930 8.4 5.0 168 11.0 6.2 177 Elkhart Park G.S. 9400 7.3 5.9 124 12.8 7.0 183 Gros Ventre Summit 8750 7.5 6.9 109 11.7 6.7 175 Gunsight Pass 9820 8.2 6.9 119 12.5 7.2 174 Kendall R.S. 7740 9.2 5.6 164 13.6 7.3 186 Loomis Park 8240 11.4 7.1 161 16.5 9.1 181 New Fork Lake 8340 7.6 5.1 149 8.1 5.8 140 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 8.3 6.0 138 13.3 7.4 180 Spring Creek Divide 9000 14.8 11.0 135 19.9 12.3 162 Triple Peak 8500 16.5 9.7 170 21.3 12.5 170 ----- ----- Basin Index (%) 145 171 LOWER GREEN RIVER Blacks Fork Jct 8870 6.3 -M * 8.0 -M * Buck Pasture 9700 9.1 -M * 12.1 -M * EF Blacks Fork GS 9360 8.7 -M * 6.6 -M * Hams Fork 7840 7.2 5.2 138 10.9 5.8 188 Hewinta 9519 6.4 4.3 149 8.7 7.1 123 Hickerson Park 9145 5.3 3.1 171 5.7 5.3 108 Hole-in-Rock 9150 4.2 3.2 131 6.0 5.0 120 Indian Creek 9425 14.6 11.1 132 16.6 11.1 150 Kelley R.S. 8180 10.2 6.9 148 15.8 9.4 168 Spirit Lk 10235 7.6 -M * 9.4 -M * Steel Creek Park 10200 8.8 6.6 133 10.5 8.2 128 ----- ----- Basin Index (%) 140 143 UPPER BEAR RIVER Bear River RS 8777 6.4 -M * 8.4 -M * Bug Lake 7950 11.7 7.2 162 15.0 10.0 150 Burts Miller Ranch 8000 3.4 -M * 4.5 -M * Chalk Creek #1 8993 13.8 10.8 128 -M 12.8 * Hayden Fork 9212 10.6 6.5 163 15.0 10.6 142 Kelley R.S. 8180 10.2 6.9 148 15.8 9.4 168 Lily Lake 9156 7.5 5.7 132 9.7 8.8 110 Monte Cristo 8960 13.3 12.1 110 16.2 13.2 123 Salt River Summit 7760 7.2 5.5 131 13.2 8.5 155 ----- ----- Basin Index (%) 136 140 ----------------------------------------------------------------------------- -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.