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 FRIDAY: JANUARY 6 , 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 7.8 138 18.4 10.8 170 Black Bear 8170 16.1 18.8 86 25.3 19.3 131 Blind Bull Sum 8650 14.2 9.8 145 14.8 10.0 148 Cottonwood Creek 7670 10.6 8.9 119 -M 12.1 * East Rim Divide 7930 7.3 4.7 155 10.0 5.9 169 Grand Targhee 9260 24.1 18.7 129 22.4 16.2 138 Granite Creek 6770 10.1 6.9 146 16.4 10.2 161 Grassy Lake 7265 15.6 14.0 111 26.9 18.4 146 Gros Ventre Summit 8750 6.7 6.5 103 10.6 6.5 163 Gunsight Pass 9820 7.4 6.6 112 11.6 6.9 168 Lewis Lake Divide 7850 12.3 14.2 87 24.3 18.1 134 Phillips Bench 8200 11.6 11.9 97 21.3 14.0 152 Salt River Summit 7760 6.0 5.2 115 11.8 8.1 146 Snake River Station 6920 10.1 7.3 138 18.9 11.9 159 Spring Creek Divide 9000 13.4 10.7 125 18.7 11.8 158 Thumb Divide 7980 6.3 6.7 94 12.5 9.5 132 Togwotee Pass 9580 14.4 11.7 123 18.0 12.3 146 Two Ocean Plateau 9240 18.1 13.3 136 19.2 13.6 141 Willow Creek 8380 12.2 11.8 103 23.3 16.8 139 Younts Peak 8350 8.1 7.3 111 12.6 8.4 150 ----- ----- Basin Index (%) 116 147 MADISON-GALLATIN Black Bear 8170 16.1 18.8 86 25.3 19.3 131 Canyon 7870 7.1 6.0 118 13.2 8.4 157 Madison Plateau 7750 9.4 10.7 88 19.2 13.4 143 West Yellowstone 6700 5.3 5.1 104 13.1 7.6 172 Whiskey Creek 6800 5.6 7.4 76 13.5 10.5 129 ----- ----- Basin Index (%) 91 142 YELLOWSTONE Beartooth Lake 9360 11.9 10.6 112 -M 9.8 * Burnt Mtn 5880 3.8 1.9 200 7.8 7.0 111 Canyon 7870 7.1 6.0 118 13.2 8.4 157 Cole Creek 7850 5.2 6.5 80 4.7 6.6 71 Evening Star 9200 14.4 12.4 116 20.4 14.1 145 Fisher Creek 9100 13.7 16.2 85 19.1 16.1 119 Northeast Entrance 7350 4.8 4.6 104 9.9 6.6 150 Parker Peak 9400 12.3 10.6 116 15.6 9.1 171 Sylvan Lake 8420 10.1 9.9 102 20.2 11.9 170 Thumb Divide 7980 6.3 6.7 94 12.5 9.5 132 Two Ocean Plateau 9240 18.1 13.3 136 19.2 13.6 141 White Mill 8700 11.5 10.8 106 14.6 12.0 122 Wolverine 7650 7.0 5.3 132 10.5 6.6 159 ----- ----- Basin Index (%) 110 138 WIND RIVER Burroughs Creek 8750 8.5 -M * 10.9 -M * Castle Creek 8400 5.2 -M * 7.1 -M * Cold Springs 9630 4.4 3.4 129 7.0 5.2 135 Deer Park 9700 10.6 6.8 156 14.0 9.8 143 Hobbs Park 10100 8.4 7.0 120 9.1 6.5 140 Kirwin 9550 6.9 4.5 153 9.7 5.9 164 Little Warm 9370 4.6 4.8 96 9.6 6.5 148 Owl Creek 8975 2.8 2.7 104 4.1 3.0 137 South Pass 9040 9.6 6.9 139 9.8 8.8 111 St. Lawrence Alt 8620 1.9 3.2 59 6.0 4.5 133 Togwotee Pass 9580 14.4 11.7 123 18.0 12.3 146 Townsend Creek 8700 4.1 4.2 98 6.6 6.0 110 ----- ----- Basin Index (%) 123 137 BIGHORN BASIN Bald Mtn. 9380 10.5 9.1 115 9.0 8.4 107 Bear Trap Meadow 8200 2.1 2.6 81 4.0 4.3 93 Bone Springs Div 9350 7.8 7.7 101 8.1 7.5 108 Grave Springs 8550 3.0 3.7 81 4.4 5.3 83 Kirwin 9550 6.9 4.5 153 9.7 5.9 164 Marquette 8760 3.7 -M * 7.1 -M * Middle Powder 7760 3.7 5.2 71 3.9 6.2 63 Owl Creek 8975 2.8 2.7 104 4.1 3.0 137 Powder River Pass 9480 2.8 5.2 54 5.4 6.3 86 Shell Creek 9580 8.4 7.4 114 7.0 6.9 101 Timber Creek 7950 2.9 2.2 132 4.4 4.0 110 ----- ----- Basin Index (%) 101 104 SHOSHONE RIVER Blackwater 9780 15.4 11.1 139 18.4 10.6 174 Evening Star 9200 14.4 12.4 116 20.4 14.1 145 Marquette 8760 3.7 -M * 7.1 -M * Sylvan Road 7120 7.0 5.9 119 17.1 9.6 178 Younts Peak 8350 8.1 7.3 111 12.6 8.4 150 ----- ----- Basin Index (%) 122 160 POWDER RIVER Bear Trap Meadow 8200 2.1 2.6 81 4.0 4.3 93 Cloud Peak Reservoir 9860 5.5 6.5 85 7.4 6.5 114 Grave Springs 8550 3.0 3.7 81 4.4 5.3 83 Hansen Sawmill 8360 3.6 3.2 112 5.4 4.2 129 Middle Powder 7760 3.7 5.2 71 3.9 6.2 63 Powder River Pass 9480 2.8 5.2 54 5.4 6.3 86 Soldier Park 8720 5.8 -M * 5.8 -M * ----- ----- Basin Index (%) 78 93 TONGUE RIVER Big Goose 7990 4.2 3.9 108 5.5 5.5 100 Bone Springs Div 9350 7.8 7.7 101 8.1 7.5 108 Burgess Junction 7880 4.4 4.9 90 5.7 6.1 93 Dome Lake 8880 5.0 5.6 89 6.9 7.0 99 Little Goose 8870 4.7 -M * 6.7 -M * Sucker Creek 8880 5.1 5.5 93 5.6 7.0 80 Tie Creek 6870 3.1 2.3 135 5.9 5.8 102 ----- ----- Basin Index (%) 99 97 BELLE FOURCHE Cole Canyon 5910 2.9 2.4 121 3.8 4.8 79 ----- ----- Basin Index (%) 121 79 CHEYENNE RIVER BASIN Blind Park 6890 3.1 3.6 86 4.8 6.3 76 North Rapid Creek 6130 3.4 3.3 103 3.6 5.2 69 ----- ----- Basin Index (%) 94 73 UPPER N. PLATTE Arapaho Ridge 10960 13.7 10.2 134 14.9 11.5 130 Blackhall Mtn 9820 15.7 -M * 17.6 -M * Columbine 9160 13.0 9.6 135 14.5 12.3 118 Divide Peak 8880 8.4 9.2 91 10.9 11.0 99 Joe Wright 10120 8.7 9.9 88 14.8 12.9 115 Laprele Creek 8375 4.4 4.2 105 4.7 6.2 76 Med Bow 10500 19.3 -M * 19.2 -M * North French Creek 10130 12.2 12.5 98 14.1 13.0 108 Never Summer 10280 -M 9.5 * -M -M * Old Battle 10000 15.2 13.8 110 16.5 17.4 95 Rawah 9020 6.9 5.0 138 9.1 7.8 117 Sage Creek Basin 7850 6.7 6.4 105 7.4 8.0 92 Sand Lake 10050 13.3 12.7 105 12.9 11.9 108 South Brush Creek 8440 5.2 5.3 98 6.2 7.6 82 Tower 10500 18.5 19.2 96 21.4 19.6 109 Webber Springs 9250 11.7 10.5 111 -M 13.2 * Willow Creek Pass 9540 8.6 5.8 148 9.5 6.8 140 Zirkel 9340 17.1 11.3 151 20.4 14.6 140 ----- ----- Basin Index (%) 112 110 SWEETWATER Deer Park 9700 10.6 6.8 156 14.0 9.8 143 Larsen Creek 9000 7.8 5.3 147 11.6 -M * South Pass 9040 9.6 6.9 139 9.8 8.8 111 ----- ----- Basin Index (%) 147 128 LOWER N. PLATTE Casper Mtn. 7900 4.7 6.3 75 5.3 7.7 69 Laprele Creek 8375 4.4 4.2 105 4.7 6.2 76 Reno Hill 8400 -M 6.1 * -M 7.4 * Windy Peak 7900 3.5 3.2 109 4.6 5.3 87 ----- ----- Basin Index (%) 92 76 LARAMIE RIVER Brooklyn Lake 10240 10.6 8.7 122 9.9 9.8 101 Cinnabar Park 9574 9.4 10.0 94 12.1 12.4 98 Crow Creek 8330 3.5 4.8 73 5.3 5.7 93 Deadman Hill 10220 9.9 7.4 134 10.1 8.2 123 Rawah 9020 6.9 5.0 138 9.1 7.8 117 Roach 9700 7.6 7.3 104 9.1 9.4 97 ----- ----- Basin Index (%) 111 104 S. PLATTE Black Mountain 8920 5.3 -M * 6.6 -M * Crow Creek 8330 3.5 4.8 73 5.3 5.7 93 Deadman Hill 10220 9.9 7.4 134 10.1 8.2 123 ----- ----- Basin Index (%) 110 111 LITTLE SNAKE RIVER Battle Mountain 7440 6.4 4.7 136 -M 7.5 * Divide Peak 8880 8.4 9.2 91 10.9 11.0 99 Elk River 8700 10.8 7.7 140 11.8 9.7 122 Little Snake River 8915 14.2 9.9 143 19.5 15.9 123 Old Battle 10000 15.2 13.8 110 16.5 17.4 95 Sage Creek Basin 7850 6.7 6.4 105 7.4 8.0 92 Sandstone RS 8150 7.3 5.1 143 7.4 9.2 80 Whiskey Park 8950 12.5 10.2 123 16.3 13.0 125 ----- ----- Basin Index (%) 122 107 UPPER GREEN RIVER Big Sandy Opening 9080 9.0 6.6 136 11.8 6.8 174 Blind Bull Sum 8650 14.2 9.8 145 14.8 10.0 148 East Rim Divide 7930 7.3 4.7 155 10.0 5.9 169 Elkhart Park G.S. 9400 6.1 5.8 105 11.7 6.8 172 Gros Ventre Summit 8750 6.7 6.5 103 10.6 6.5 163 Gunsight Pass 9820 7.4 6.6 112 11.6 6.9 168 Kendall R.S. 7740 8.0 5.2 154 12.3 7.0 176 Loomis Park 8240 10.0 6.9 145 15.3 8.7 176 New Fork Lake 8340 6.6 4.9 135 7.2 5.5 131 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 7.1 5.7 125 11.9 7.1 168 Spring Creek Divide 9000 13.4 10.7 125 18.7 11.8 158 Triple Peak 8500 15.0 9.0 167 19.8 12.0 165 ----- ----- Basin Index (%) 134 164 LOWER GREEN RIVER Blacks Fork Jct 8870 5.4 -M * 7.7 -M * Buck Pasture 9700 8.5 -M * 11.9 -M * EF Blacks Fork GS 9360 8.2 -M * 6.6 -M * Hams Fork 7840 -M 5.0 * 9.7 5.6 173 Hewinta 9519 5.9 4.1 144 8.1 6.8 119 Hickerson Park 9145 4.8 3.0 160 4.7 5.2 90 Hole-in-Rock 9150 3.6 3.1 116 5.3 4.9 108 Indian Creek 9425 12.9 10.5 123 15.8 10.7 148 Kelley R.S. 8180 9.0 6.6 136 14.6 9.0 162 Spirit Lk 10235 7.4 -M * 9.0 -M * Steel Creek Park 10200 8.3 6.4 130 10.3 7.9 130 ----- ----- Basin Index (%) 132 137 UPPER BEAR RIVER Bear River RS 8777 6.0 -M * 8.0 -M * Bug Lake 7950 -M 6.8 * 14.1 9.6 147 Burts Miller Ranch 8000 3.0 -M * 3.6 -M * Chalk Creek #1 8993 13.0 10.3 126 15.4 12.4 124 Hayden Fork 9212 10.2 6.3 162 14.4 10.2 141 Kelley R.S. 8180 9.0 6.6 136 14.6 9.0 162 Lily Lake 9156 7.0 5.5 127 9.5 8.6 110 Monte Cristo 8960 12.5 11.1 113 15.0 12.7 118 Salt River Summit 7760 6.0 5.2 115 11.8 8.1 146 ----- ----- Basin Index (%) 128 134 ----------------------------------------------------------------------------- -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.