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 SUNDAY: JANUARY 1 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 10.3 7.2 143 18.1 10.0 181 Black Bear 8170 15.8 17.8 89 25.1 18.0 139 Blind Bull Sum 8650 13.5 9.1 148 15.0 9.4 160 Cottonwood Creek 7670 9.6 8.5 113 16.4 11.2 146 East Rim Divide 7930 7.0 4.3 163 9.5 5.5 173 Grand Targhee 9260 23.5 17.5 134 22.2 14.8 150 Granite Creek 6770 9.5 6.5 146 15.8 9.5 166 Grassy Lake 7265 15.2 12.8 119 26.7 17.1 156 Gros Ventre Summit 8750 6.3 6.2 102 10.5 6.2 169 Gunsight Pass 9820 7.0 6.1 115 11.3 6.5 174 Lewis Lake Divide 7850 12.4 13.3 93 24.1 17.0 142 Phillips Bench 8200 11.4 11.0 104 20.9 12.9 162 Salt River Summit 7760 5.3 4.9 108 11.2 7.6 147 Snake River Station 6920 9.8 6.4 153 18.4 11.0 167 Spring Creek Divide 9000 12.2 10.2 120 17.6 10.9 161 Thumb Divide 7980 6.4 6.2 103 12.4 8.8 141 Togwotee Pass 9580 13.9 11.1 125 17.6 11.6 152 Two Ocean Plateau 9240 17.8 12.5 142 19.1 12.7 150 Willow Creek 8380 11.3 10.8 105 22.2 15.7 141 Younts Peak 8350 7.9 7.0 113 12.6 7.8 162 ----- ----- Basin Index (%) 119 155 MADISON-GALLATIN Black Bear 8170 15.8 17.8 89 25.1 18.0 139 Canyon 7870 6.8 5.5 124 12.8 7.9 162 Madison Plateau 7750 9.2 10.3 89 18.7 12.5 150 West Yellowstone 6700 5.3 4.7 113 12.8 7.2 178 Whiskey Creek 6800 5.9 6.7 88 13.8 9.8 141 ----- ----- Basin Index (%) 96 150 YELLOWSTONE Beartooth Lake 9360 11.8 10.0 118 5.8 9.2 63 Burnt Mtn 5880 3.7 1.8 206 7.5 6.8 110 Canyon 7870 6.8 5.5 124 12.8 7.9 162 Cole Creek 7850 5.4 6.3 86 4.7 6.4 73 Evening Star 9200 14.3 11.5 124 20.3 13.2 154 Fisher Creek 9100 13.5 14.7 92 18.9 15.1 125 Northeast Entrance 7350 4.6 4.1 112 9.8 6.2 158 Parker Peak 9400 12.1 9.9 122 15.2 8.6 177 Sylvan Lake 8420 9.6 9.2 104 19.7 11.2 176 Thumb Divide 7980 6.4 6.2 103 12.4 8.8 141 Two Ocean Plateau 9240 17.8 12.5 142 19.1 12.7 150 White Mill 8700 11.3 9.9 114 14.6 11.3 129 Wolverine 7650 7.1 4.8 148 10.7 6.2 173 ----- ----- Basin Index (%) 117 139 WIND RIVER Burroughs Creek 8750 8.1 -M * 10.8 -M * Castle Creek 8400 4.7 -M * 6.8 -M * Cold Springs 9630 4.2 3.2 131 6.6 5.0 132 Deer Park 9700 9.7 6.6 147 13.7 9.0 152 Hobbs Park 10100 8.1 6.6 123 8.8 6.2 142 Kirwin 9550 6.8 4.3 158 9.8 5.6 175 Little Warm 9370 4.2 4.5 93 9.0 6.2 145 Owl Creek 8975 2.6 2.6 100 4.1 2.9 141 South Pass 9040 9.2 6.7 137 9.6 8.4 114 St. Lawrence Alt 8620 1.6 3.1 52 5.6 4.3 130 Togwotee Pass 9580 13.9 11.1 125 17.6 11.6 152 Townsend Creek 8700 3.8 4.1 93 6.6 5.8 114 ----- ----- Basin Index (%) 121 141 BIGHORN BASIN Bald Mtn. 9380 10.4 8.5 122 9.3 7.9 118 Bear Trap Meadow 8200 2.3 2.6 88 3.8 4.2 90 Bone Springs Div 9350 7.6 7.3 104 8.3 7.2 115 Grave Springs 8550 2.9 3.4 85 4.1 5.1 80 Kirwin 9550 6.8 4.3 158 9.8 5.6 175 Marquette 8760 3.5 -M * 6.7 -M * Middle Powder 7760 3.7 5.0 74 3.9 6.0 65 Owl Creek 8975 2.6 2.6 100 4.1 2.9 141 Powder River Pass 9480 2.5 4.8 52 5.3 6.0 88 Shell Creek 9580 8.5 7.2 118 6.9 6.5 106 Timber Creek 7950 2.8 2.2 127 4.2 3.9 108 ----- ----- Basin Index (%) 105 108 SHOSHONE RIVER Blackwater 9780 15.2 10.5 145 19.0 10.0 190 Evening Star 9200 14.3 11.5 124 20.3 13.2 154 Marquette 8760 3.5 -M * 6.7 -M * Sylvan Road 7120 6.7 5.4 124 16.6 9.0 184 Younts Peak 8350 7.9 7.0 113 12.6 7.8 162 ----- ----- Basin Index (%) 128 171 POWDER RIVER Bear Trap Meadow 8200 2.3 2.6 88 3.8 4.2 90 Cloud Peak Reservoir 9860 5.6 6.3 89 7.6 6.2 123 Grave Springs 8550 2.9 3.4 85 4.1 5.1 80 Hansen Sawmill 8360 3.5 3.0 117 5.2 4.0 130 Middle Powder 7760 3.7 5.0 74 3.9 6.0 65 Powder River Pass 9480 2.5 4.8 52 5.3 6.0 88 Soldier Park 8720 6.2 -M * 5.9 -M * ----- ----- Basin Index (%) 82 95 TONGUE RIVER Big Goose 7990 4.4 3.7 119 5.4 5.3 102 Bone Springs Div 9350 7.6 7.3 104 8.3 7.2 115 Burgess Junction 7880 4.2 4.7 89 5.5 5.9 93 Dome Lake 8880 5.2 5.4 96 6.6 6.7 99 Little Goose 8870 4.8 -M * 6.9 -M * Sucker Creek 8880 5.2 5.2 100 5.7 6.7 85 Tie Creek 6870 3.0 2.1 143 5.9 5.6 105 ----- ----- Basin Index (%) 104 100 BELLE FOURCHE Cole Canyon 5910 2.7 2.2 123 3.8 4.7 81 ----- ----- Basin Index (%) 123 81 CHEYENNE RIVER BASIN Blind Park 6890 3.1 3.2 97 4.7 6.0 78 North Rapid Creek 6130 3.4 3.2 106 3.7 5.0 74 ----- ----- Basin Index (%) 102 76 UPPER N. PLATTE Arapaho Ridge 10960 11.3 9.5 119 12.9 10.9 118 Blackhall Mtn 9820 12.7 -M * 14.8 -M * Columbine 9160 10.6 8.8 120 12.8 11.6 110 Divide Peak 8880 6.4 8.5 75 9.1 10.4 88 Joe Wright 10120 7.5 9.4 80 13.1 12.1 108 Laprele Creek 8375 4.3 4.0 108 4.5 6.0 75 Med Bow 10500 16.4 -M * 16.6 -M * North French Creek 10130 9.9 11.7 85 11.8 12.1 98 Never Summer 10280 -M 8.7 * -M -M * Old Battle 10000 11.8 12.6 94 13.7 16.4 84 Rawah 9020 5.4 4.4 123 8.0 7.3 110 Sage Creek Basin 7850 4.9 5.8 84 6.3 7.6 83 Sand Lake 10050 11.3 11.8 96 11.2 11.2 100 South Brush Creek 8440 4.0 4.8 83 5.4 7.2 75 Tower 10500 14.7 18.6 79 18.5 18.5 100 Webber Springs 9250 9.1 9.6 95 12.5 12.6 99 Willow Creek Pass 9540 7.4 5.4 137 8.6 6.5 132 Zirkel 9340 12.5 10.0 125 16.2 13.8 117 ----- ----- Basin Index (%) 97 100 SWEETWATER Deer Park 9700 9.7 6.6 147 13.7 9.0 152 Larsen Creek 9000 7.4 4.9 151 11.3 -M * South Pass 9040 9.2 6.7 137 9.6 8.4 114 ----- ----- Basin Index (%) 145 134 LOWER N. PLATTE Casper Mtn. 7900 5.0 5.9 85 5.6 7.4 76 Laprele Creek 8375 4.3 4.0 108 4.5 6.0 75 Reno Hill 8400 -M 5.8 * -M 7.2 * Windy Peak 7900 3.4 3.1 110 4.4 5.2 85 ----- ----- Basin Index (%) 98 78 LARAMIE RIVER Brooklyn Lake 10240 8.7 7.9 110 8.9 9.3 96 Cinnabar Park 9574 7.6 9.1 84 10.4 11.6 90 Crow Creek 8330 2.2 4.5 49 4.1 5.5 75 Deadman Hill 10220 8.1 7.2 112 8.2 7.8 105 Rawah 9020 5.4 4.4 123 8.0 7.3 110 Roach 9700 5.8 6.9 84 7.5 9.0 83 ----- ----- Basin Index (%) 94 93 S. PLATTE Black Mountain 8920 4.3 -M * 5.6 -M * Crow Creek 8330 2.2 4.5 49 4.1 5.5 75 Deadman Hill 10220 8.1 7.2 112 8.2 7.8 105 ----- ----- Basin Index (%) 88 92 LITTLE SNAKE RIVER Battle Mountain 7440 4.1 4.1 100 -M 7.0 * Divide Peak 8880 6.4 8.5 75 9.1 10.4 88 Elk River 8700 8.3 6.8 122 9.5 9.1 104 Little Snake River 8915 11.5 9.0 128 16.8 14.9 113 Old Battle 10000 11.8 12.6 94 13.7 16.4 84 Sage Creek Basin 7850 4.9 5.8 84 6.3 7.6 83 Sandstone RS 8150 5.0 4.4 114 5.7 8.6 66 Whiskey Park 8950 9.9 9.6 103 13.3 12.2 109 ----- ----- Basin Index (%) 102 94 UPPER GREEN RIVER Big Sandy Opening 9080 8.4 6.0 140 11.2 6.3 178 Blind Bull Sum 8650 13.5 9.1 148 15.0 9.4 160 East Rim Divide 7930 7.0 4.3 163 9.5 5.5 173 Elkhart Park G.S. 9400 5.8 5.7 102 11.3 6.4 177 Gros Ventre Summit 8750 6.3 6.2 102 10.5 6.2 169 Gunsight Pass 9820 7.0 6.1 115 11.3 6.5 174 Kendall R.S. 7740 7.6 4.8 158 11.8 6.5 182 Loomis Park 8240 9.5 6.6 144 14.8 8.2 180 New Fork Lake 8340 6.3 4.5 140 7.1 5.1 139 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 6.2 5.2 119 11.5 6.6 174 Spring Creek Divide 9000 12.2 10.2 120 17.6 10.9 161 Triple Peak 8500 14.0 8.3 169 18.9 11.0 172 ----- ----- Basin Index (%) 135 170 LOWER GREEN RIVER Blacks Fork Jct 8870 4.5 -M * 6.6 -M * Buck Pasture 9700 6.7 -M * 9.9 -M * EF Blacks Fork GS 9360 6.7 -M * 6.0 -M * Hams Fork 7840 4.9 4.6 107 8.6 5.2 165 Hewinta 9519 4.6 3.8 121 6.8 6.4 106 Hickerson Park 9145 4.2 2.9 145 4.4 5.0 88 Hole-in-Rock 9150 2.9 2.9 100 4.8 4.6 104 Indian Creek 9425 11.6 10.0 116 15.9 10.0 159 Kelley R.S. 8180 8.0 6.2 129 13.6 8.5 160 Spirit Lk 10235 6.4 -M * 8.4 -M * Steel Creek Park 10200 6.9 6.2 111 8.8 7.5 117 ----- ----- Basin Index (%) 118 133 UPPER BEAR RIVER Bear River RS 8777 4.5 -M * 6.6 -M * Bug Lake 7950 8.1 6.3 129 11.8 9.0 131 Burts Miller Ranch 8000 2.1 -M * 3.2 -M * Chalk Creek #1 8993 10.3 9.7 106 12.9 11.6 111 Hayden Fork 9212 7.8 5.9 132 12.2 9.6 127 Kelley R.S. 8180 8.0 6.2 129 13.6 8.5 160 Lily Lake 9156 5.1 5.2 98 7.8 8.0 98 Monte Cristo 8960 10.3 10.1 102 14.1 11.8 119 Salt River Summit 7760 5.3 4.9 108 11.2 7.6 147 ----- ----- Basin Index (%) 114 126 ----------------------------------------------------------------------------- -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.