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 SATURDAY: DECEMBER 24 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 9.5 6.3 151 17.1 8.9 192 Black Bear 8170 14.3 15.2 94 23.9 15.8 151 Blind Bull Sum 8650 12.8 8.1 158 14.4 8.3 173 Cottonwood Creek 7670 9.0 7.4 122 16.0 10.0 160 East Rim Divide 7930 5.2 3.7 141 8.5 4.8 177 Grand Targhee 9260 21.9 15.5 141 21.4 13.5 159 Granite Creek 6770 8.1 5.2 156 14.4 8.2 176 Grassy Lake 7265 13.6 10.7 127 25.4 14.9 170 Gros Ventre Summit 8750 5.4 5.2 104 9.9 5.5 180 Gunsight Pass 9820 6.4 4.8 133 10.7 5.6 191 Lewis Lake Divide 7850 11.4 11.1 103 23.0 14.9 154 Phillips Bench 8200 9.5 9.3 102 18.8 11.2 168 Salt River Summit 7760 4.8 4.1 117 10.8 6.6 164 Snake River Station 6920 9.0 5.5 164 17.2 9.8 176 Spring Creek Divide 9000 11.2 8.4 133 16.6 9.6 173 Thumb Divide 7980 5.8 5.4 107 12.0 7.7 156 Togwotee Pass 9580 12.6 9.9 127 16.3 10.3 158 Two Ocean Plateau 9240 17.0 11.2 152 18.4 11.4 161 Willow Creek 8380 10.6 9.5 112 21.4 14.0 153 Younts Peak 8350 7.2 6.1 118 12.1 6.9 175 ----- ----- Basin Index (%) 126 166 MADISON-GALLATIN Black Bear 8170 14.3 15.2 94 23.9 15.8 151 Canyon 7870 5.9 4.6 128 12.2 7.0 174 Madison Plateau 7750 7.9 9.2 86 17.9 10.8 166 West Yellowstone 6700 4.5 3.9 115 11.9 6.1 195 Whiskey Creek 6800 4.8 5.7 84 12.7 8.7 146 ----- ----- Basin Index (%) 97 162 YELLOWSTONE Beartooth Lake 9360 11.3 8.9 127 -M 8.2 * Burnt Mtn 5880 3.0 1.9 158 6.8 6.4 106 Canyon 7870 5.9 4.6 128 12.2 7.0 174 Cole Creek 7850 4.7 5.8 81 4.7 6.1 77 Evening Star 9200 13.5 9.9 136 19.4 11.9 163 Fisher Creek 9100 12.8 13.5 95 18.1 13.4 135 Northeast Entrance 7350 4.2 3.1 135 9.6 5.6 171 Parker Peak 9400 11.7 8.7 134 14.7 7.8 188 Sylvan Lake 8420 9.0 8.2 110 19.2 10.2 188 Thumb Divide 7980 5.8 5.4 107 12.0 7.7 156 Two Ocean Plateau 9240 17.0 11.2 152 18.4 11.4 161 White Mill 8700 10.6 8.9 119 14.2 10.2 139 Wolverine 7650 6.2 4.1 151 10.0 5.7 175 ----- ----- Basin Index (%) 123 154 WIND RIVER Burroughs Creek 8750 7.6 -M * 10.2 -M * Castle Creek 8400 4.3 -M * 6.4 -M * Cold Springs 9630 3.7 2.9 128 6.1 4.6 133 Deer Park 9700 7.9 5.6 141 11.8 7.8 151 Hobbs Park 10100 7.3 6.0 122 8.3 5.7 146 Kirwin 9550 6.4 4.1 156 9.3 5.1 182 Little Warm 9370 3.7 4.0 92 8.6 5.6 154 Owl Creek 8975 2.3 2.3 100 3.7 2.7 137 South Pass 9040 7.8 5.7 137 8.6 7.6 113 St. Lawrence Alt 8620 1.8 2.7 67 5.4 4.0 135 Togwotee Pass 9580 12.6 9.9 127 16.3 10.3 158 Townsend Creek 8700 3.3 3.6 92 6.2 5.4 115 ----- ----- Basin Index (%) 121 143 BIGHORN BASIN Bald Mtn. 9380 9.2 7.4 124 8.2 7.3 112 Bear Trap Meadow 8200 1.5 2.4 62 3.5 3.9 90 Bone Springs Div 9350 6.4 6.8 94 7.4 6.6 112 Grave Springs 8550 2.3 2.9 79 3.8 4.7 81 Kirwin 9550 6.4 4.1 156 9.3 5.1 182 Marquette 8760 3.4 -M * 6.4 -M * Middle Powder 7760 2.8 4.5 62 3.8 5.8 66 Owl Creek 8975 2.3 2.3 100 3.7 2.7 137 Powder River Pass 9480 1.6 4.2 38 4.7 5.4 87 Shell Creek 9580 7.1 6.7 106 6.2 6.1 102 Timber Creek 7950 2.6 1.9 137 4.0 3.8 105 ----- ----- Basin Index (%) 98 106 SHOSHONE RIVER Blackwater 9780 14.8 9.5 156 18.1 9.1 199 Evening Star 9200 13.5 9.9 136 19.4 11.9 163 Marquette 8760 3.4 -M * 6.4 -M * Sylvan Road 7120 6.4 4.7 136 16.2 8.3 195 Younts Peak 8350 7.2 6.1 118 12.1 6.9 175 ----- ----- Basin Index (%) 139 182 POWDER RIVER Bear Trap Meadow 8200 1.5 2.4 62 3.5 3.9 90 Cloud Peak Reservoir 9860 3.7 5.5 67 6.0 5.9 102 Grave Springs 8550 2.3 2.9 79 3.8 4.7 81 Hansen Sawmill 8360 2.6 2.7 96 4.2 3.8 111 Middle Powder 7760 2.8 4.5 62 3.8 5.8 66 Powder River Pass 9480 1.6 4.2 38 4.7 5.4 87 Soldier Park 8720 3.1 -M * 4.8 -M * ----- ----- Basin Index (%) 65 88 TONGUE RIVER Big Goose 7990 3.3 3.3 100 4.5 5.0 90 Bone Springs Div 9350 6.4 6.8 94 7.4 6.6 112 Burgess Junction 7880 3.4 4.3 79 5.1 5.5 93 Dome Lake 8880 3.7 4.8 77 6.0 6.3 95 Little Goose 8870 3.6 -M * 5.7 -M * Sucker Creek 8880 4.2 4.6 91 5.3 6.3 84 Tie Creek 6870 2.7 1.5 180 5.6 5.2 108 ----- ----- Basin Index (%) 94 97 BELLE FOURCHE Cole Canyon 5910 2.2 1.3 169 3.5 4.3 81 ----- ----- Basin Index (%) 169 81 CHEYENNE RIVER BASIN Blind Park 6890 3.0 2.6 115 4.3 5.5 78 North Rapid Creek 6130 2.8 2.7 104 3.1 4.6 67 ----- ----- Basin Index (%) 109 73 UPPER N. PLATTE Arapaho Ridge 10960 9.9 8.6 115 11.7 9.9 118 Blackhall Mtn 9820 11.3 -M * 13.4 -M * Columbine 9160 9.1 7.9 115 11.7 10.5 111 Divide Peak 8880 6.0 7.4 81 8.4 9.4 89 Joe Wright 10120 7.1 8.9 80 12.0 11.2 107 Laprele Creek 8375 3.8 3.5 109 4.1 5.5 75 Med Bow 10500 14.0 -M * 14.6 -M * North French Creek 10130 8.9 10.5 85 10.8 10.9 99 Never Summer 10280 8.3 7.9 105 8.6 -M * Old Battle 10000 10.6 11.5 92 11.8 14.8 80 Rawah 9020 5.1 3.9 131 7.8 6.8 115 Sage Creek Basin 7850 4.3 5.0 86 5.6 6.5 86 Sand Lake 10050 9.7 10.4 93 9.8 10.3 95 South Brush Creek 8440 3.3 4.3 77 5.0 6.6 76 Tower 10500 13.5 18.1 75 16.9 16.8 101 Webber Springs 9250 8.1 8.6 94 11.7 11.3 104 Willow Creek Pass 9540 6.8 5.0 136 8.0 6.0 133 Zirkel 9340 10.8 8.4 129 14.5 12.3 118 ----- ----- Basin Index (%) 96 101 SWEETWATER Deer Park 9700 7.9 5.6 141 11.8 7.8 151 Larsen Creek 9000 6.0 4.3 140 10.2 -M * South Pass 9040 7.8 5.7 137 8.6 7.6 113 ----- ----- Basin Index (%) 139 132 LOWER N. PLATTE Casper Mtn. 7900 3.9 5.3 74 4.8 6.9 70 Laprele Creek 8375 3.8 3.5 109 4.1 5.5 75 Reno Hill 8400 -M 5.3 * -M 6.5 * Windy Peak 7900 3.2 2.9 110 4.2 4.8 88 ----- ----- Basin Index (%) 93 76 LARAMIE RIVER Brooklyn Lake 10240 7.1 7.3 97 7.6 8.4 90 Cinnabar Park 9574 6.6 7.8 85 9.3 10.2 91 Crow Creek 8330 2.1 3.9 54 3.8 5.0 76 Deadman Hill 10220 7.2 6.7 107 7.7 7.2 107 Rawah 9020 5.1 3.9 131 7.8 6.8 115 Roach 9700 5.1 6.2 82 6.8 8.2 83 ----- ----- Basin Index (%) 93 94 S. PLATTE Black Mountain 8920 3.6 -M * 5.3 -M * Crow Creek 8330 2.1 3.9 54 3.8 5.0 76 Deadman Hill 10220 7.2 6.7 107 7.7 7.2 107 ----- ----- Basin Index (%) 88 94 LITTLE SNAKE RIVER Battle Mountain 7440 3.4 3.4 100 6.4 6.4 100 Divide Peak 8880 6.0 7.4 81 8.4 9.4 89 Elk River 8700 7.4 5.8 128 8.7 8.2 106 Little Snake River 8915 10.3 7.5 137 15.3 13.3 115 Old Battle 10000 10.6 11.5 92 11.8 14.8 80 Sage Creek Basin 7850 4.3 5.0 86 5.6 6.5 86 Sandstone RS 8150 4.6 4.1 112 5.4 7.8 69 Whiskey Park 8950 8.7 8.4 104 11.7 10.9 107 ----- ----- Basin Index (%) 104 95 UPPER GREEN RIVER Big Sandy Opening 9080 7.6 5.0 152 10.3 5.6 184 Blind Bull Sum 8650 12.8 8.1 158 14.4 8.3 173 East Rim Divide 7930 5.2 3.7 141 8.5 4.8 177 Elkhart Park G.S. 9400 4.9 4.8 102 10.2 5.7 179 Gros Ventre Summit 8750 5.4 5.2 104 9.9 5.5 180 Gunsight Pass 9820 6.4 4.8 133 10.7 5.6 191 Kendall R.S. 7740 7.0 4.2 167 11.3 5.7 198 Loomis Park 8240 8.2 5.4 152 13.5 7.1 190 New Fork Lake 8340 5.4 3.9 138 6.4 4.6 139 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 5.3 4.6 115 10.6 5.8 183 Spring Creek Divide 9000 11.2 8.4 133 16.6 9.6 173 Triple Peak 8500 12.8 7.5 171 17.7 9.8 181 ----- ----- Basin Index (%) 141 179 LOWER GREEN RIVER Blacks Fork Jct 8870 4.3 -M * 6.0 -M * Buck Pasture 9700 5.9 -M * 8.7 -M * EF Blacks Fork GS 9360 5.7 -M * 5.7 -M * Hams Fork 7840 4.5 3.9 115 8.3 4.6 180 Hewinta 9519 4.1 3.3 124 6.4 6.1 105 Hickerson Park 9145 3.5 2.4 146 4.0 4.6 87 Hole-in-Rock 9150 2.4 2.7 89 4.3 4.3 100 Indian Creek 9425 10.5 9.3 113 14.7 8.8 167 Kelley R.S. 8180 7.3 5.4 135 12.9 7.4 174 Spirit Lk 10235 4.3 -M * 6.8 -M * Steel Creek Park 10200 6.0 5.8 103 7.9 6.9 114 ----- ----- Basin Index (%) 117 137 UPPER BEAR RIVER Bear River RS 8777 4.1 -M * 6.2 -M * Bug Lake 7950 8.4 5.7 147 10.4 8.1 128 Burts Miller Ranch 8000 2.3 -M * 3.4 -M * Chalk Creek #1 8993 9.6 9.3 103 11.9 10.6 112 Hayden Fork 9212 6.8 4.7 145 10.9 8.7 125 Kelley R.S. 8180 7.3 5.4 135 12.9 7.4 174 Lily Lake 9156 4.6 4.7 98 6.9 7.5 92 Monte Cristo 8960 9.4 9.0 104 13.0 10.6 123 Salt River Summit 7760 4.8 4.1 117 10.8 6.6 164 ----- ----- Basin Index (%) 119 129 ----------------------------------------------------------------------------- -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.