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 TUESDAY: JANUARY 3 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 10.5 7.4 142 18.2 10.3 177 Black Bear 8170 16.0 18.3 87 25.4 18.6 137 Blind Bull Sum 8650 13.7 9.4 146 14.9 9.6 155 Cottonwood Creek 7670 9.9 8.7 114 16.7 11.6 144 East Rim Divide 7930 7.0 4.5 156 9.6 5.7 168 Grand Targhee 9260 23.8 17.7 134 22.3 15.3 146 Granite Creek 6770 9.8 6.7 146 16.0 9.8 163 Grassy Lake 7265 15.5 13.2 117 27.2 17.7 154 Gros Ventre Summit 8750 6.4 6.3 102 10.6 6.3 168 Gunsight Pass 9820 7.1 6.3 113 11.4 6.7 170 Lewis Lake Divide 7850 12.5 13.6 92 24.3 17.4 140 Phillips Bench 8200 11.5 11.3 102 21.0 13.4 157 Salt River Summit 7760 5.5 5.0 110 11.3 7.8 145 Snake River Station 6920 10.0 6.7 149 18.7 11.4 164 Spring Creek Divide 9000 12.4 10.4 119 17.8 11.2 159 Thumb Divide 7980 6.4 6.4 100 12.4 9.2 135 Togwotee Pass 9580 14.1 11.3 125 17.7 11.9 149 Two Ocean Plateau 9240 18.0 12.9 140 19.2 13.2 145 Willow Creek 8380 11.6 11.3 103 22.6 16.1 140 Younts Peak 8350 8.0 7.1 113 12.6 8.0 158 ----- ----- Basin Index (%) 118 151 MADISON-GALLATIN Black Bear 8170 16.0 18.3 87 25.4 18.6 137 Canyon 7870 6.9 5.7 121 13.0 8.1 160 Madison Plateau 7750 9.4 10.5 90 19.1 13.0 147 West Yellowstone 6700 5.5 4.8 115 13.0 7.3 178 Whiskey Creek 6800 5.9 7.0 84 13.7 10.2 134 ----- ----- Basin Index (%) 94 147 YELLOWSTONE Beartooth Lake 9360 12.0 10.2 118 5.7 9.4 61 Burnt Mtn 5880 3.7 1.9 195 7.7 6.9 112 Canyon 7870 6.9 5.7 121 13.0 8.1 160 Cole Creek 7850 5.0 6.4 78 4.5 6.5 69 Evening Star 9200 14.3 11.9 120 20.2 13.6 149 Fisher Creek 9100 13.7 15.4 89 19.0 15.5 123 Northeast Entrance 7350 4.7 4.3 109 9.9 6.3 157 Parker Peak 9400 12.3 10.2 121 15.5 8.7 178 Sylvan Lake 8420 9.8 9.4 104 20.0 11.5 174 Thumb Divide 7980 6.4 6.4 100 12.4 9.2 135 Two Ocean Plateau 9240 18.0 12.9 140 19.2 13.2 145 White Mill 8700 11.4 10.3 111 14.6 11.6 126 Wolverine 7650 6.8 5.0 136 10.1 6.4 158 ----- ----- Basin Index (%) 114 135 WIND RIVER Burroughs Creek 8750 8.3 -M * 10.6 -M * Castle Creek 8400 4.9 -M * 7.0 -M * Cold Springs 9630 4.2 3.2 131 6.4 5.1 125 Deer Park 9700 9.9 6.6 150 13.8 9.4 147 Hobbs Park 10100 8.2 6.7 122 8.7 6.4 136 Kirwin 9550 6.8 4.4 155 9.7 5.8 167 Little Warm 9370 4.4 4.6 96 9.2 6.3 146 Owl Creek 8975 2.7 2.6 104 4.0 2.9 138 South Pass 9040 9.3 6.8 137 9.5 8.6 110 St. Lawrence Alt 8620 1.6 3.2 50 5.7 4.4 130 Togwotee Pass 9580 14.1 11.3 125 17.7 11.9 149 Townsend Creek 8700 4.0 4.2 95 6.6 5.9 112 ----- ----- Basin Index (%) 122 137 BIGHORN BASIN Bald Mtn. 9380 10.4 8.8 118 8.8 8.1 109 Bear Trap Meadow 8200 2.1 2.6 81 3.9 4.3 91 Bone Springs Div 9350 7.7 7.4 104 8.1 7.3 111 Grave Springs 8550 2.9 3.5 83 4.1 5.2 79 Kirwin 9550 6.8 4.4 155 9.7 5.8 167 Marquette 8760 3.4 -M * 6.8 -M * Middle Powder 7760 3.6 5.0 72 3.7 6.1 61 Owl Creek 8975 2.7 2.6 104 4.0 2.9 138 Powder River Pass 9480 2.7 4.9 55 5.1 6.1 84 Shell Creek 9580 8.3 7.3 114 6.7 6.6 102 Timber Creek 7950 2.8 2.2 127 4.2 3.9 108 ----- ----- Basin Index (%) 103 104 SHOSHONE RIVER Blackwater 9780 15.3 10.7 143 18.5 10.2 181 Evening Star 9200 14.3 11.9 120 20.2 13.6 149 Marquette 8760 3.4 -M * 6.8 -M * Sylvan Road 7120 6.9 5.7 121 16.8 9.3 181 Younts Peak 8350 8.0 7.1 113 12.6 8.0 158 ----- ----- Basin Index (%) 126 166 POWDER RIVER Bear Trap Meadow 8200 2.1 2.6 81 3.9 4.3 91 Cloud Peak Reservoir 9860 5.5 6.4 86 7.3 6.4 114 Grave Springs 8550 2.9 3.5 83 4.1 5.2 79 Hansen Sawmill 8360 3.5 3.1 113 5.3 4.1 129 Middle Powder 7760 3.6 5.0 72 3.7 6.1 61 Powder River Pass 9480 2.7 4.9 55 5.1 6.1 84 Soldier Park 8720 5.7 -M * 5.7 -M * ----- ----- Basin Index (%) 80 91 TONGUE RIVER Big Goose 7990 4.0 3.8 105 5.3 5.4 98 Bone Springs Div 9350 7.7 7.4 104 8.1 7.3 111 Burgess Junction 7880 4.3 4.8 90 5.4 6.0 90 Dome Lake 8880 5.0 5.6 89 6.7 6.8 99 Little Goose 8870 4.6 -M * 6.5 -M * Sucker Creek 8880 5.1 5.3 96 5.3 6.8 78 Tie Creek 6870 3.0 2.2 136 5.1 5.7 89 ----- ----- Basin Index (%) 100 94 BELLE FOURCHE Cole Canyon 5910 2.8 2.3 122 3.7 4.7 79 ----- ----- Basin Index (%) 122 79 CHEYENNE RIVER BASIN Blind Park 6890 3.1 3.3 94 4.8 6.1 79 North Rapid Creek 6130 3.4 3.2 106 3.6 5.1 71 ----- ----- Basin Index (%) 100 75 UPPER N. PLATTE Arapaho Ridge 10960 11.8 9.8 120 13.2 11.1 119 Blackhall Mtn 9820 13.6 -M * 15.7 -M * Columbine 9160 10.8 9.0 120 13.2 11.8 112 Divide Peak 8880 7.2 8.8 82 9.7 10.6 92 Joe Wright 10120 8.0 9.6 83 13.5 12.3 110 Laprele Creek 8375 4.7 4.0 118 4.6 6.0 77 Med Bow 10500 17.2 -M * 17.4 -M * North French Creek 10130 10.7 12.0 89 12.7 12.4 102 Never Summer 10280 -M 9.0 * -M -M * Old Battle 10000 12.9 13.0 99 14.6 16.8 87 Rawah 9020 5.6 4.7 119 8.2 7.6 108 Sage Creek Basin 7850 5.5 6.1 90 6.8 7.8 87 Sand Lake 10050 12.0 12.2 98 11.6 11.5 101 South Brush Creek 8440 4.6 5.0 92 5.9 7.3 81 Tower 10500 14.8 18.9 78 18.6 18.8 99 Webber Springs 9250 10.1 9.9 102 13.2 12.8 103 Willow Creek Pass 9540 7.7 5.6 138 9.0 6.6 136 Zirkel 9340 13.5 10.5 129 17.2 14.1 122 ----- ----- Basin Index (%) 101 103 SWEETWATER Deer Park 9700 9.9 6.6 150 13.8 9.4 147 Larsen Creek 9000 7.5 5.1 147 11.4 -M * South Pass 9040 9.3 6.8 137 9.5 8.6 110 ----- ----- Basin Index (%) 144 129 LOWER N. PLATTE Casper Mtn. 7900 5.0 6.0 83 5.4 7.5 72 Laprele Creek 8375 4.7 4.0 118 4.6 6.0 77 Reno Hill 8400 -M 5.9 * -M 7.2 * Windy Peak 7900 3.5 3.1 113 4.4 5.2 85 ----- ----- Basin Index (%) 101 77 LARAMIE RIVER Brooklyn Lake 10240 9.1 8.1 112 9.1 9.5 96 Cinnabar Park 9574 8.0 9.4 85 10.8 11.9 91 Crow Creek 8330 2.5 4.6 54 4.4 5.6 79 Deadman Hill 10220 8.4 7.3 115 8.5 7.9 108 Rawah 9020 5.6 4.7 119 8.2 7.6 108 Roach 9700 6.1 7.0 87 7.8 9.1 86 ----- ----- Basin Index (%) 97 95 S. PLATTE Black Mountain 8920 4.5 -M * 5.9 -M * Crow Creek 8330 2.5 4.6 54 4.4 5.6 79 Deadman Hill 10220 8.4 7.3 115 8.5 7.9 108 ----- ----- Basin Index (%) 92 96 LITTLE SNAKE RIVER Battle Mountain 7440 5.0 4.4 114 7.1 7.2 99 Divide Peak 8880 7.2 8.8 82 9.7 10.6 92 Elk River 8700 9.5 7.1 134 10.6 9.3 114 Little Snake River 8915 12.6 9.3 135 17.9 15.2 118 Old Battle 10000 12.9 13.0 99 14.6 16.8 87 Sage Creek Basin 7850 5.5 6.1 90 6.8 7.8 87 Sandstone RS 8150 5.9 4.7 126 6.0 8.8 68 Whiskey Park 8950 10.9 9.8 111 14.1 12.5 113 ----- ----- Basin Index (%) 110 98 UPPER GREEN RIVER Big Sandy Opening 9080 8.8 6.2 142 11.5 6.5 177 Blind Bull Sum 8650 13.7 9.4 146 14.9 9.6 155 East Rim Divide 7930 7.0 4.5 156 9.6 5.7 168 Elkhart Park G.S. 9400 5.7 5.8 98 11.3 6.6 171 Gros Ventre Summit 8750 6.4 6.3 102 10.6 6.3 168 Gunsight Pass 9820 7.1 6.3 113 11.4 6.7 170 Kendall R.S. 7740 7.7 5.0 154 12.0 6.8 176 Loomis Park 8240 9.7 6.8 143 14.9 8.4 177 New Fork Lake 8340 6.4 4.7 136 7.1 5.3 134 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 6.3 5.4 117 11.5 6.8 169 Spring Creek Divide 9000 12.4 10.4 119 17.8 11.2 159 Triple Peak 8500 14.2 8.6 165 19.1 11.4 168 ----- ----- Basin Index (%) 133 166 LOWER GREEN RIVER Blacks Fork Jct 8870 5.0 -M * 6.9 -M * Buck Pasture 9700 7.3 -M * 10.4 -M * EF Blacks Fork GS 9360 7.3 -M * 6.2 -M * Hams Fork 7840 5.2 4.7 111 8.9 5.4 165 Hewinta 9519 5.2 3.9 133 7.4 6.6 112 Hickerson Park 9145 4.6 2.9 159 5.1 5.0 102 Hole-in-Rock 9150 3.2 3.0 107 5.2 4.7 111 Indian Creek 9425 11.8 10.1 117 16.0 10.2 157 Kelley R.S. 8180 8.2 6.3 130 13.8 8.7 159 Spirit Lk 10235 7.0 -M * 8.8 -M * Steel Creek Park 10200 7.4 6.3 117 9.2 7.7 119 ----- ----- Basin Index (%) 123 136 UPPER BEAR RIVER Bear River RS 8777 5.1 -M * 7.2 -M * Bug Lake 7950 8.7 6.4 136 12.2 9.3 131 Burts Miller Ranch 8000 2.6 -M * 3.7 -M * Chalk Creek #1 8993 11.4 9.9 115 13.7 11.9 115 Hayden Fork 9212 8.5 6.1 139 12.0 9.9 121 Kelley R.S. 8180 8.2 6.3 130 13.8 8.7 159 Lily Lake 9156 5.7 5.3 108 8.3 8.2 101 Monte Cristo 8960 10.9 10.3 106 14.0 12.2 115 Salt River Summit 7760 5.5 5.0 110 11.3 7.8 145 ----- ----- Basin Index (%) 119 125 ----------------------------------------------------------------------------- -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.