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 WEDNESDAY: JANUARY 4 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 10.7 7.5 143 18.5 10.4 178 Black Bear 8170 16.1 18.5 87 25.4 18.8 135 Blind Bull Sum 8650 14.0 9.5 147 15.0 9.8 153 Cottonwood Creek 7670 10.1 8.8 115 17.0 11.7 145 East Rim Divide 7930 7.2 4.6 157 9.8 5.7 172 Grand Targhee 9260 24.1 18.0 134 22.5 15.4 146 Granite Creek 6770 10.0 6.8 147 16.3 9.9 165 Grassy Lake 7265 15.8 13.5 117 27.4 17.9 153 Gros Ventre Summit 8750 6.6 6.4 103 10.7 6.4 167 Gunsight Pass 9820 7.3 6.4 114 11.6 6.7 173 Lewis Lake Divide 7850 12.8 13.8 93 24.4 17.7 138 Phillips Bench 8200 11.7 11.5 102 21.1 13.6 155 Salt River Summit 7760 5.7 5.1 112 11.6 7.9 147 Snake River Station 6920 10.2 6.9 148 19.0 11.6 164 Spring Creek Divide 9000 12.9 10.6 122 18.2 11.4 160 Thumb Divide 7980 6.6 6.5 102 12.5 9.3 134 Togwotee Pass 9580 14.2 11.4 125 17.9 12.0 149 Two Ocean Plateau 9240 18.2 13.0 140 19.3 13.3 145 Willow Creek 8380 11.9 11.5 103 22.9 16.3 140 Younts Peak 8350 8.2 7.1 115 12.9 8.2 157 ----- ----- Basin Index (%) 119 151 MADISON-GALLATIN Black Bear 8170 16.1 18.5 87 25.4 18.8 135 Canyon 7870 6.9 5.8 119 13.1 8.2 160 Madison Plateau 7750 9.4 10.5 90 19.2 13.1 147 West Yellowstone 6700 5.5 4.9 112 13.1 7.4 177 Whiskey Creek 6800 5.9 7.1 83 13.7 10.3 133 ----- ----- Basin Index (%) 94 146 YELLOWSTONE Beartooth Lake 9360 12.0 10.3 117 -M 9.5 * Burnt Mtn 5880 3.7 1.9 195 7.7 6.9 112 Canyon 7870 6.9 5.8 119 13.1 8.2 160 Cole Creek 7850 5.1 6.4 80 4.7 6.5 72 Evening Star 9200 14.4 12.1 119 20.4 13.7 149 Fisher Creek 9100 13.8 15.7 88 19.1 15.7 122 Northeast Entrance 7350 4.8 4.4 109 9.9 6.4 155 Parker Peak 9400 12.4 10.3 120 15.6 8.9 175 Sylvan Lake 8420 10.0 9.6 104 20.2 11.6 174 Thumb Divide 7980 6.6 6.5 102 12.5 9.3 134 Two Ocean Plateau 9240 18.2 13.0 140 19.3 13.3 145 White Mill 8700 11.5 10.4 111 14.6 11.8 124 Wolverine 7650 6.8 5.1 133 10.3 6.4 161 ----- ----- Basin Index (%) 113 141 WIND RIVER Burroughs Creek 8750 8.5 -M * 11.0 -M * Castle Creek 8400 5.1 -M * 7.2 -M * Cold Springs 9630 4.3 3.3 130 6.6 5.1 129 Deer Park 9700 10.2 6.6 155 13.8 9.5 145 Hobbs Park 10100 8.4 6.8 124 8.9 6.4 139 Kirwin 9550 6.9 4.5 153 9.9 5.8 171 Little Warm 9370 4.5 4.7 96 9.3 6.4 145 Owl Creek 8975 2.7 2.7 100 4.1 2.9 141 South Pass 9040 9.5 6.8 140 9.7 8.6 113 St. Lawrence Alt 8620 1.9 3.2 59 5.9 4.4 134 Togwotee Pass 9580 14.2 11.4 125 17.9 12.0 149 Townsend Creek 8700 4.1 4.2 98 6.8 5.9 115 ----- ----- Basin Index (%) 123 139 BIGHORN BASIN Bald Mtn. 9380 10.5 8.9 118 9.0 8.2 110 Bear Trap Meadow 8200 2.3 2.6 88 4.0 4.3 93 Bone Springs Div 9350 7.7 7.5 103 8.1 7.4 109 Grave Springs 8550 2.9 3.6 81 4.2 5.3 79 Kirwin 9550 6.9 4.5 153 9.9 5.8 171 Marquette 8760 3.6 -M * 6.9 -M * Middle Powder 7760 3.7 5.1 73 3.9 6.2 63 Owl Creek 8975 2.7 2.7 100 4.1 2.9 141 Powder River Pass 9480 2.7 5.0 54 5.3 6.1 87 Shell Creek 9580 8.4 7.3 115 6.9 6.7 103 Timber Creek 7950 2.9 2.2 132 4.2 3.9 108 ----- ----- Basin Index (%) 103 105 SHOSHONE RIVER Blackwater 9780 15.4 10.9 141 18.7 10.3 182 Evening Star 9200 14.4 12.1 119 20.4 13.7 149 Marquette 8760 3.6 -M * 6.9 -M * Sylvan Road 7120 7.1 5.8 122 17.0 9.4 181 Younts Peak 8350 8.2 7.1 115 12.9 8.2 157 ----- ----- Basin Index (%) 126 166 POWDER RIVER Bear Trap Meadow 8200 2.3 2.6 88 4.0 4.3 93 Cloud Peak Reservoir 9860 5.5 6.4 86 7.4 6.4 116 Grave Springs 8550 2.9 3.6 81 4.2 5.3 79 Hansen Sawmill 8360 3.6 3.1 116 5.4 4.2 129 Middle Powder 7760 3.7 5.1 73 3.9 6.2 63 Powder River Pass 9480 2.7 5.0 54 5.3 6.1 87 Soldier Park 8720 6.0 -M * 5.8 -M * ----- ----- Basin Index (%) 80 93 TONGUE RIVER Big Goose 7990 4.2 3.8 111 5.5 5.4 102 Bone Springs Div 9350 7.7 7.5 103 8.1 7.4 109 Burgess Junction 7880 4.3 4.9 88 5.6 6.0 93 Dome Lake 8880 5.1 5.6 91 6.8 6.9 99 Little Goose 8870 4.7 -M * 6.7 -M * Sucker Creek 8880 5.1 5.4 94 5.6 6.9 81 Tie Creek 6870 3.1 2.2 141 5.8 5.8 100 ----- ----- Basin Index (%) 100 97 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 3.4 91 4.8 6.2 77 North Rapid Creek 6130 3.3 3.2 103 3.5 5.1 69 ----- ----- Basin Index (%) 97 73 UPPER N. PLATTE Arapaho Ridge 10960 12.0 9.9 121 13.5 11.2 121 Blackhall Mtn 9820 14.0 -M * 16.1 -M * Columbine 9160 11.1 9.2 121 13.4 12.0 112 Divide Peak 8880 7.4 9.0 82 9.9 10.6 93 Joe Wright 10120 8.1 9.7 84 13.6 12.5 109 Laprele Creek 8375 4.8 4.1 117 4.7 6.1 77 Med Bow 10500 17.6 -M * 17.7 -M * North French Creek 10130 11.0 12.2 90 12.9 12.5 103 Never Summer 10280 -M 9.2 * -M -M * Old Battle 10000 13.2 13.3 99 15.0 17.0 88 Rawah 9020 5.7 4.8 119 8.4 7.6 111 Sage Creek Basin 7850 5.6 6.2 90 7.0 7.8 90 Sand Lake 10050 12.4 12.4 100 12.1 11.6 104 South Brush Creek 8440 4.8 5.1 94 6.2 7.4 84 Tower 10500 15.2 19.0 80 18.9 19.0 99 Webber Springs 9250 10.4 10.1 103 13.9 13.0 107 Willow Creek Pass 9540 7.9 5.6 141 9.1 6.7 136 Zirkel 9340 14.2 10.7 133 17.9 14.2 126 ----- ----- Basin Index (%) 102 104 SWEETWATER Deer Park 9700 10.2 6.6 155 13.8 9.5 145 Larsen Creek 9000 7.7 5.1 151 11.6 -M * South Pass 9040 9.5 6.8 140 9.7 8.6 113 ----- ----- Basin Index (%) 148 130 LOWER N. PLATTE Casper Mtn. 7900 5.0 6.1 82 5.5 7.5 73 Laprele Creek 8375 4.8 4.1 117 4.7 6.1 77 Reno Hill 8400 -M 6.0 * -M 7.3 * Windy Peak 7900 3.6 3.1 116 4.5 5.3 85 ----- ----- Basin Index (%) 101 78 LARAMIE RIVER Brooklyn Lake 10240 9.5 8.3 114 9.4 9.5 99 Cinnabar Park 9574 8.3 9.5 87 11.1 12.0 92 Crow Creek 8330 2.6 4.7 55 4.6 5.6 82 Deadman Hill 10220 8.8 7.3 121 8.9 8.0 111 Rawah 9020 5.7 4.8 119 8.4 7.6 111 Roach 9700 6.5 7.1 92 8.1 9.2 88 ----- ----- Basin Index (%) 99 97 S. PLATTE Black Mountain 8920 4.7 -M * 6.0 -M * Crow Creek 8330 2.6 4.7 55 4.6 5.6 82 Deadman Hill 10220 8.8 7.3 121 8.9 8.0 111 ----- ----- Basin Index (%) 95 99 LITTLE SNAKE RIVER Battle Mountain 7440 5.2 4.5 116 7.4 7.2 103 Divide Peak 8880 7.4 9.0 82 9.9 10.6 93 Elk River 8700 9.8 7.4 132 10.9 9.4 116 Little Snake River 8915 12.8 9.5 135 18.1 15.4 118 Old Battle 10000 13.2 13.3 99 15.0 17.0 88 Sage Creek Basin 7850 5.6 6.2 90 7.0 7.8 90 Sandstone RS 8150 6.1 4.8 127 6.5 8.9 73 Whiskey Park 8950 11.2 9.8 114 14.4 12.6 114 ----- ----- Basin Index (%) 111 100 UPPER GREEN RIVER Big Sandy Opening 9080 9.0 6.3 143 11.7 6.6 177 Blind Bull Sum 8650 14.0 9.5 147 15.0 9.8 153 East Rim Divide 7930 7.2 4.6 157 9.8 5.7 172 Elkhart Park G.S. 9400 5.9 5.8 102 11.4 6.7 170 Gros Ventre Summit 8750 6.6 6.4 103 10.7 6.4 167 Gunsight Pass 9820 7.3 6.4 114 11.6 6.7 173 Kendall R.S. 7740 7.9 5.1 155 12.2 6.8 179 Loomis Park 8240 9.9 6.8 146 15.0 8.5 176 New Fork Lake 8340 6.6 4.7 140 7.2 5.4 133 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 6.6 5.5 120 11.8 6.9 171 Spring Creek Divide 9000 12.9 10.6 122 18.2 11.4 160 Triple Peak 8500 14.5 8.7 167 19.4 11.6 167 ----- ----- Basin Index (%) 135 166 LOWER GREEN RIVER Blacks Fork Jct 8870 5.2 -M * 7.1 -M * Buck Pasture 9700 7.5 -M * 10.5 -M * EF Blacks Fork GS 9360 7.6 -M * 6.4 -M * Hams Fork 7840 5.6 4.8 117 9.2 5.4 170 Hewinta 9519 5.3 4.0 132 7.6 6.6 115 Hickerson Park 9145 4.6 3.0 153 5.0 5.1 98 Hole-in-Rock 9150 3.3 3.0 110 5.3 4.8 110 Indian Creek 9425 12.2 10.2 120 16.2 10.4 156 Kelley R.S. 8180 8.5 6.4 133 14.2 8.8 161 Spirit Lk 10235 7.1 -M * 9.0 -M * Steel Creek Park 10200 7.5 6.3 119 9.4 7.7 122 ----- ----- Basin Index (%) 125 137 UPPER BEAR RIVER Bear River RS 8777 5.2 -M * 7.4 -M * Bug Lake 7950 9.0 6.6 136 12.3 9.4 131 Burts Miller Ranch 8000 2.6 -M * 3.8 -M * Chalk Creek #1 8993 11.6 10.0 116 14.0 12.0 117 Hayden Fork 9212 8.7 6.2 140 12.3 10.0 123 Kelley R.S. 8180 8.5 6.4 133 14.2 8.8 161 Lily Lake 9156 5.9 5.3 111 8.4 8.3 101 Monte Cristo 8960 11.0 10.5 105 14.1 12.3 115 Salt River Summit 7760 5.7 5.1 112 11.6 7.9 147 ----- ----- Basin Index (%) 121 126 ----------------------------------------------------------------------------- -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.