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 5 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 10.8 7.7 140 18.5 10.6 175 Black Bear 8170 16.1 18.6 87 25.4 19.1 133 Blind Bull Sum 8650 14.4 9.6 150 15.0 9.9 152 Cottonwood Creek 7670 10.8 8.8 123 17.7 11.9 149 East Rim Divide 7930 7.5 4.6 163 10.1 5.8 174 Grand Targhee 9260 24.2 18.3 132 22.5 15.5 145 Granite Creek 6770 10.4 6.8 153 16.6 10.1 164 Grassy Lake 7265 15.7 13.7 115 27.2 18.2 149 Gros Ventre Summit 8750 6.8 6.4 106 10.9 6.4 170 Gunsight Pass 9820 7.4 6.5 114 11.7 6.8 172 Lewis Lake Divide 7850 12.5 14.0 89 24.3 17.9 136 Phillips Bench 8200 11.9 11.7 102 21.4 13.8 155 Salt River Summit 7760 6.3 5.2 121 12.1 8.0 151 Snake River Station 6920 10.2 7.2 142 19.0 11.7 162 Spring Creek Divide 9000 13.5 10.7 126 18.8 11.6 162 Thumb Divide 7980 6.5 6.6 98 12.4 9.4 132 Togwotee Pass 9580 14.4 11.6 124 18.0 12.1 149 Two Ocean Plateau 9240 18.1 13.1 138 19.2 13.4 143 Willow Creek 8380 12.4 11.6 107 23.5 16.5 142 Younts Peak 8350 8.1 7.2 112 12.4 8.2 151 ----- ----- Basin Index (%) 119 151 MADISON-GALLATIN Black Bear 8170 16.1 18.6 87 25.4 19.1 133 Canyon 7870 7.1 5.9 120 13.1 8.3 158 Madison Plateau 7750 9.5 10.6 90 19.2 13.3 144 West Yellowstone 6700 5.5 5.0 110 13.1 7.5 175 Whiskey Creek 6800 6.0 7.2 83 13.9 10.4 134 ----- ----- Basin Index (%) 93 145 YELLOWSTONE Beartooth Lake 9360 11.8 10.4 113 -M 9.7 * Burnt Mtn 5880 3.7 1.9 195 7.8 6.9 113 Canyon 7870 7.1 5.9 120 13.1 8.3 158 Cole Creek 7850 5.1 6.4 80 4.6 6.6 70 Evening Star 9200 14.4 12.3 117 20.3 13.9 146 Fisher Creek 9100 13.7 16.0 86 18.9 15.9 119 Northeast Entrance 7350 4.9 4.6 107 9.9 6.5 152 Parker Peak 9400 -M 10.5 * 15.5 9.0 172 Sylvan Lake 8420 10.2 9.7 105 20.2 11.7 173 Thumb Divide 7980 6.5 6.6 98 12.4 9.4 132 Two Ocean Plateau 9240 18.1 13.1 138 19.2 13.4 143 White Mill 8700 11.5 10.6 108 14.5 11.9 122 Wolverine 7650 7.0 5.2 135 10.2 6.5 157 ----- ----- Basin Index (%) 111 139 WIND RIVER Burroughs Creek 8750 8.6 -M * 11.0 -M * Castle Creek 8400 5.3 -M * 7.4 -M * Cold Springs 9630 4.4 3.3 133 6.8 5.1 133 Deer Park 9700 10.6 6.7 158 13.9 9.6 145 Hobbs Park 10100 8.6 6.9 125 9.0 6.4 141 Kirwin 9550 6.9 4.5 153 9.6 5.9 163 Little Warm 9370 4.7 4.8 98 9.5 6.4 148 Owl Creek 8975 2.8 2.7 104 4.1 3.0 137 South Pass 9040 9.7 6.9 141 9.8 8.7 113 St. Lawrence Alt 8620 2.1 3.2 66 6.1 4.4 139 Togwotee Pass 9580 14.4 11.6 124 18.0 12.1 149 Townsend Creek 8700 4.2 4.2 100 6.9 6.0 115 ----- ----- Basin Index (%) 125 139 BIGHORN BASIN Bald Mtn. 9380 10.5 9.0 117 8.8 8.3 106 Bear Trap Meadow 8200 -M 2.6 * 3.9 4.3 91 Bone Springs Div 9350 7.8 7.6 103 7.9 7.5 105 Grave Springs 8550 3.0 3.7 81 4.3 5.3 81 Kirwin 9550 6.9 4.5 153 9.6 5.9 163 Marquette 8760 4.0 -M * 7.0 -M * Middle Powder 7760 3.6 5.2 69 3.7 6.2 60 Owl Creek 8975 2.8 2.7 104 4.1 3.0 137 Powder River Pass 9480 2.8 5.1 55 5.1 6.2 82 Shell Creek 9580 8.4 7.4 114 6.8 6.8 100 Timber Creek 7950 2.9 2.2 132 4.4 4.0 110 ----- ----- Basin Index (%) 103 102 SHOSHONE RIVER Blackwater 9780 15.4 11.0 140 17.9 10.4 172 Evening Star 9200 14.4 12.3 117 20.3 13.9 146 Marquette 8760 4.0 -M * 7.0 -M * Sylvan Road 7120 7.0 5.9 119 17.1 9.5 180 Younts Peak 8350 8.1 7.2 112 12.4 8.2 151 ----- ----- Basin Index (%) 123 161 POWDER RIVER Bear Trap Meadow 8200 -M 2.6 * 3.9 4.3 91 Cloud Peak Reservoir 9860 5.5 6.5 85 7.1 6.5 109 Grave Springs 8550 3.0 3.7 81 4.3 5.3 81 Hansen Sawmill 8360 3.5 3.2 109 5.3 4.2 126 Middle Powder 7760 3.6 5.2 69 3.7 6.2 60 Powder River Pass 9480 2.8 5.1 55 5.1 6.2 82 Soldier Park 8720 5.4 -M * 5.7 -M * ----- ----- Basin Index (%) 78 90 TONGUE RIVER Big Goose 7990 4.1 3.8 108 5.4 5.5 98 Bone Springs Div 9350 7.8 7.6 103 7.9 7.5 105 Burgess Junction 7880 4.3 4.9 88 5.5 6.1 90 Dome Lake 8880 5.0 5.6 89 6.8 7.0 97 Little Goose 8870 4.6 -M * 6.5 -M * Sucker Creek 8880 5.0 5.5 91 5.3 7.0 76 Tie Creek 6870 3.1 2.2 141 5.9 5.8 102 ----- ----- Basin Index (%) 99 95 BELLE FOURCHE Cole Canyon 5910 2.8 2.3 122 3.8 4.7 81 ----- ----- Basin Index (%) 122 81 CHEYENNE RIVER BASIN Blind Park 6890 3.1 3.5 89 4.8 6.2 77 North Rapid Creek 6130 3.3 3.3 100 3.5 5.2 67 ----- ----- Basin Index (%) 94 73 UPPER N. PLATTE Arapaho Ridge 10960 13.6 10.0 136 14.8 11.4 130 Blackhall Mtn 9820 15.7 -M * -M -M * Columbine 9160 12.9 9.4 137 15.1 12.2 124 Divide Peak 8880 8.6 9.1 95 11.0 10.8 102 Joe Wright 10120 8.9 9.8 91 14.7 12.6 117 Laprele Creek 8375 4.7 4.1 115 4.8 6.1 79 Med Bow 10500 19.4 -M * 19.4 -M * North French Creek 10130 12.5 12.3 102 14.3 12.7 113 Never Summer 10280 -M 9.3 * -M -M * Old Battle 10000 15.3 13.5 113 16.9 17.2 98 Rawah 9020 6.7 4.9 137 9.2 7.7 119 Sage Creek Basin 7850 6.8 6.3 108 7.5 7.9 95 Sand Lake 10050 13.7 12.6 109 13.3 11.7 114 South Brush Creek 8440 5.5 5.2 106 6.7 7.5 89 Tower 10500 18.4 19.1 96 21.7 19.3 112 Webber Springs 9250 12.0 10.3 117 13.2 13.1 101 Willow Creek Pass 9540 8.5 5.7 149 9.6 6.7 143 Zirkel 9340 -M 11.0 * -M 14.4 * ----- ----- Basin Index (%) 112 110 SWEETWATER Deer Park 9700 10.6 6.7 158 13.9 9.6 145 Larsen Creek 9000 8.1 5.2 156 12.0 -M * South Pass 9040 9.7 6.9 141 9.8 8.7 113 ----- ----- Basin Index (%) 151 130 LOWER N. PLATTE Casper Mtn. 7900 4.9 6.2 79 5.4 7.6 71 Laprele Creek 8375 4.7 4.1 115 4.8 6.1 79 Reno Hill 8400 -M 6.0 * -M 7.3 * Windy Peak 7900 3.7 3.1 119 4.6 5.3 87 ----- ----- Basin Index (%) 99 78 LARAMIE RIVER Brooklyn Lake 10240 10.9 8.5 128 9.8 9.7 101 Cinnabar Park 9574 9.5 9.7 98 12.2 12.2 100 Crow Creek 8330 3.4 4.7 72 5.3 5.7 93 Deadman Hill 10220 9.9 7.4 134 10.1 8.1 125 Rawah 9020 6.7 4.9 137 9.2 7.7 119 Roach 9700 7.5 7.2 104 9.1 9.3 98 ----- ----- Basin Index (%) 113 106 S. PLATTE Black Mountain 8920 5.2 -M * 6.6 -M * Crow Creek 8330 3.4 4.7 72 5.3 5.7 93 Deadman Hill 10220 9.9 7.4 134 10.1 8.1 125 ----- ----- Basin Index (%) 110 112 LITTLE SNAKE RIVER Battle Mountain 7440 6.5 4.6 141 8.4 7.4 114 Divide Peak 8880 8.6 9.1 95 11.0 10.8 102 Elk River 8700 10.8 7.5 144 11.6 9.6 121 Little Snake River 8915 14.6 9.7 151 19.9 15.5 128 Old Battle 10000 15.3 13.5 113 16.9 17.2 98 Sage Creek Basin 7850 6.8 6.3 108 7.5 7.9 95 Sandstone RS 8150 7.3 4.9 149 7.2 9.1 79 Whiskey Park 8950 13.2 10.0 132 16.3 12.8 127 ----- ----- Basin Index (%) 127 109 UPPER GREEN RIVER Big Sandy Opening 9080 9.4 6.4 147 12.1 6.6 183 Blind Bull Sum 8650 14.4 9.6 150 15.0 9.9 152 East Rim Divide 7930 7.5 4.6 163 10.1 5.8 174 Elkhart Park G.S. 9400 6.2 5.8 107 11.8 6.7 176 Gros Ventre Summit 8750 6.8 6.4 106 10.9 6.4 170 Gunsight Pass 9820 7.4 6.5 114 11.7 6.8 172 Kendall R.S. 7740 8.1 5.1 159 12.5 6.9 181 Loomis Park 8240 10.2 6.8 150 15.5 8.6 180 New Fork Lake 8340 6.8 4.8 142 7.3 5.4 135 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.3 5.6 130 12.4 7.0 177 Spring Creek Divide 9000 13.5 10.7 126 18.8 11.6 162 Triple Peak 8500 15.2 8.8 173 20.1 11.8 170 ----- ----- Basin Index (%) 139 169 LOWER GREEN RIVER Blacks Fork Jct 8870 5.9 -M * 7.7 -M * Buck Pasture 9700 8.6 -M * 11.6 -M * EF Blacks Fork GS 9360 8.3 -M * 6.8 -M * Hams Fork 7840 6.5 4.9 133 10.1 5.5 184 Hewinta 9519 5.9 4.0 148 8.2 6.7 122 Hickerson Park 9145 5.0 3.0 167 5.4 5.1 106 Hole-in-Rock 9150 3.8 3.1 123 5.6 4.8 117 Indian Creek 9425 13.1 10.3 127 16.2 10.5 154 Kelley R.S. 8180 9.3 6.5 143 15.0 8.9 169 Spirit Lk 10235 7.4 -M * 9.2 -M * Steel Creek Park 10200 8.4 6.4 131 10.1 7.8 129 ----- ----- Basin Index (%) 136 143 UPPER BEAR RIVER Bear River RS 8777 6.0 -M * 8.1 -M * Bug Lake 7950 10.9 6.7 163 12.5 9.5 132 Burts Miller Ranch 8000 3.3 -M * 4.1 -M * Chalk Creek #1 8993 13.0 10.2 127 15.3 12.2 125 Hayden Fork 9212 10.0 6.3 159 14.3 10.1 142 Kelley R.S. 8180 9.3 6.5 143 15.0 8.9 169 Lily Lake 9156 7.1 5.4 131 9.3 8.4 111 Monte Cristo 8960 12.7 10.8 118 14.1 12.5 113 Salt River Summit 7760 6.3 5.2 121 12.1 8.0 151 ----- ----- Basin Index (%) 136 133 ----------------------------------------------------------------------------- -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.