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: DECEMBER 18 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 8.7 5.6 155 15.9 8.3 192 Black Bear 8170 12.9 13.7 94 22.2 14.6 152 Blind Bull Sum 8650 11.7 7.5 156 13.5 7.7 175 Cottonwood Creek 7670 8.3 6.7 124 15.0 9.3 161 East Rim Divide 7930 4.6 3.3 139 7.8 4.5 173 Grand Targhee 9260 20.5 13.9 147 19.3 12.4 156 Granite Creek 6770 7.2 4.5 160 13.7 7.6 180 Grassy Lake 7265 12.3 9.7 127 23.7 13.7 173 Gros Ventre Summit 8750 5.1 4.7 109 9.1 5.2 175 Gunsight Pass 9820 5.4 4.3 126 9.7 5.2 187 Lewis Lake Divide 7850 10.5 9.8 107 21.7 13.7 158 Phillips Bench 8200 8.0 8.4 95 17.5 10.4 168 Salt River Summit 7760 4.2 3.5 120 9.9 6.1 162 Snake River Station 6920 8.3 5.0 166 16.9 9.2 184 Spring Creek Divide 9000 10.3 8.0 129 15.6 8.9 175 Thumb Divide 7980 5.2 4.7 111 11.3 7.3 155 Togwotee Pass 9580 11.6 9.2 126 15.1 9.6 157 Two Ocean Plateau 9240 15.9 10.6 150 17.4 10.7 163 Willow Creek 8380 9.6 8.5 113 20.2 13.0 155 Younts Peak 8350 6.2 5.6 111 10.7 6.4 167 ----- ----- Basin Index (%) 127 167 MADISON-GALLATIN Black Bear 8170 12.9 13.7 94 22.2 14.6 152 Canyon 7870 5.6 4.1 137 11.6 6.5 178 Madison Plateau 7750 7.0 8.1 86 16.9 10.1 167 West Yellowstone 6700 3.5 3.4 103 11.1 5.7 195 Whiskey Creek 6800 4.0 4.9 82 11.8 8.1 146 ----- ----- Basin Index (%) 96 164 YELLOWSTONE Beartooth Lake 9360 10.3 8.1 127 5.3 7.6 70 Burnt Mtn 5880 2.9 1.7 171 6.7 6.1 110 Canyon 7870 5.6 4.1 137 11.6 6.5 178 Cole Creek 7850 4.2 5.6 75 4.3 5.8 74 Evening Star 9200 12.1 9.1 133 17.9 11.1 161 Fisher Creek 9100 11.8 12.1 98 17.0 12.4 137 Northeast Entrance 7350 4.0 2.7 148 9.3 5.2 179 Parker Peak 9400 10.4 8.0 130 13.8 7.3 189 Sylvan Lake 8420 8.0 7.5 107 18.0 9.4 191 Thumb Divide 7980 5.2 4.7 111 11.3 7.3 155 Two Ocean Plateau 9240 15.9 10.6 150 17.4 10.7 163 White Mill 8700 9.9 8.2 121 13.2 9.4 140 Wolverine 7650 5.0 3.5 143 8.5 5.3 160 ----- ----- Basin Index (%) 123 148 WIND RIVER Burroughs Creek 8750 6.7 -M * 8.7 -M * Castle Creek 8400 3.7 -M * 5.5 -M * Cold Springs 9630 3.3 2.7 122 5.7 4.4 130 Deer Park 9700 7.8 5.1 153 11.3 7.4 153 Hobbs Park 10100 6.7 5.9 114 7.7 5.4 143 Kirwin 9550 5.7 4.0 142 8.1 4.8 169 Little Warm 9370 3.0 3.8 79 7.7 5.3 145 Owl Creek 8975 2.0 2.2 91 3.4 2.6 131 South Pass 9040 7.5 5.4 139 8.1 7.1 114 St. Lawrence Alt 8620 1.3 2.6 50 5.0 3.8 132 Togwotee Pass 9580 11.6 9.2 126 15.1 9.6 157 Townsend Creek 8700 2.9 3.3 88 5.7 5.2 110 ----- ----- Basin Index (%) 117 140 BIGHORN BASIN Bald Mtn. 9380 8.9 6.9 129 7.5 6.7 112 Bear Trap Meadow 8200 1.0 2.1 48 3.0 3.8 79 Bone Springs Div 9350 6.3 6.2 102 7.0 6.0 117 Grave Springs 8550 2.1 2.5 84 3.7 4.3 86 Kirwin 9550 5.7 4.0 142 8.1 4.8 169 Marquette 8760 3.8 -M * 6.3 -M * Middle Powder 7760 2.6 3.8 68 3.2 5.4 59 Owl Creek 8975 2.0 2.2 91 3.4 2.6 131 Powder River Pass 9480 1.5 3.8 39 4.0 5.0 80 Shell Creek 9580 6.6 6.1 108 5.5 5.6 98 Timber Creek 7950 2.5 1.9 132 3.8 3.6 106 ----- ----- Basin Index (%) 99 103 SHOSHONE RIVER Blackwater 9780 13.8 9.0 153 16.4 8.5 193 Evening Star 9200 12.1 9.1 133 17.9 11.1 161 Marquette 8760 3.8 -M * 6.3 -M * Sylvan Road 7120 5.5 4.1 134 15.0 7.7 195 Younts Peak 8350 6.2 5.6 111 10.7 6.4 167 ----- ----- Basin Index (%) 135 178 POWDER RIVER Bear Trap Meadow 8200 1.0 2.1 48 3.0 3.8 79 Cloud Peak Reservoir 9860 3.3 5.0 66 5.2 5.6 93 Grave Springs 8550 2.1 2.5 84 3.7 4.3 86 Hansen Sawmill 8360 2.3 2.3 100 4.0 3.6 111 Middle Powder 7760 2.6 3.8 68 3.2 5.4 59 Powder River Pass 9480 1.5 3.8 39 4.0 5.0 80 Soldier Park 8720 2.1 -M * 4.4 -M * ----- ----- Basin Index (%) 66 83 TONGUE RIVER Big Goose 7990 2.9 3.0 97 4.3 4.6 93 Bone Springs Div 9350 6.3 6.2 102 7.0 6.0 117 Burgess Junction 7880 3.3 3.9 85 4.7 5.1 92 Dome Lake 8880 2.9 4.5 64 5.8 5.9 98 Little Goose 8870 3.4 -M * 5.2 -M * Sucker Creek 8880 4.0 4.1 98 4.6 5.8 79 Tie Creek 6870 2.6 1.2 217 5.3 4.8 110 ----- ----- Basin Index (%) 96 98 BELLE FOURCHE Cole Canyon 5910 2.0 1.0 200 3.1 4.1 76 ----- ----- Basin Index (%) 200 76 CHEYENNE RIVER BASIN Blind Park 6890 2.7 2.2 123 4.1 5.2 79 North Rapid Creek 6130 2.4 2.4 100 2.6 4.3 60 ----- ----- Basin Index (%) 111 71 UPPER N. PLATTE Arapaho Ridge 10960 9.2 7.6 121 11.0 9.2 120 Blackhall Mtn 9820 10.6 -M * 12.7 -M * Columbine 9160 8.5 6.9 123 10.1 9.6 105 Divide Peak 8880 5.6 6.5 86 7.6 8.6 88 Joe Wright 10120 5.9 8.0 74 11.1 10.3 108 Laprele Creek 8375 3.1 3.0 103 3.5 5.1 69 Med Bow 10500 13.3 -M * -M -M * North French Creek 10130 8.1 9.6 84 10.2 10.0 102 Never Summer 10280 7.7 6.9 112 8.0 -M * Old Battle 10000 10.0 10.5 95 10.6 13.5 79 Rawah 9020 4.7 3.6 131 6.9 6.2 111 Sage Creek Basin 7850 3.9 4.2 93 5.4 5.9 92 Sand Lake 10050 9.0 9.4 96 8.9 9.5 94 South Brush Creek 8440 2.8 3.8 74 4.0 6.1 66 Tower 10500 12.7 16.4 77 15.1 15.5 97 Webber Springs 9250 7.5 8.0 94 10.9 10.4 105 Willow Creek Pass 9540 6.4 4.6 139 7.2 5.6 129 Zirkel 9340 10.2 7.6 134 13.7 11.2 122 ----- ----- Basin Index (%) 99 100 SWEETWATER Deer Park 9700 7.8 5.1 153 11.3 7.4 153 Larsen Creek 9000 5.3 3.8 139 9.7 -M * South Pass 9040 7.5 5.4 139 8.1 7.1 114 ----- ----- Basin Index (%) 144 134 LOWER N. PLATTE Casper Mtn. 7900 3.3 4.8 69 4.2 6.5 65 Laprele Creek 8375 3.1 3.0 103 3.5 5.1 69 Reno Hill 8400 -M 5.0 * -M 6.2 * Windy Peak 7900 3.0 2.5 120 3.8 4.4 86 ----- ----- Basin Index (%) 91 72 LARAMIE RIVER Brooklyn Lake 10240 6.7 6.7 100 6.9 7.7 90 Cinnabar Park 9574 6.1 7.4 82 8.8 9.4 94 Crow Creek 8330 2.2 3.7 59 3.7 4.5 82 Deadman Hill 10220 6.6 5.8 114 7.3 6.6 111 Rawah 9020 4.7 3.6 131 6.9 6.2 111 Roach 9700 -M 5.3 * -M 7.4 * ----- ----- Basin Index (%) 97 98 S. PLATTE Black Mountain 8920 3.4 -M * 5.1 -M * Crow Creek 8330 2.2 3.7 59 3.7 4.5 82 Deadman Hill 10220 6.6 5.8 114 7.3 6.6 111 ----- ----- Basin Index (%) 93 99 LITTLE SNAKE RIVER Battle Mountain 7440 3.3 2.8 118 -M 5.9 * Divide Peak 8880 5.6 6.5 86 7.6 8.6 88 Elk River 8700 7.2 5.0 144 8.2 7.5 109 Little Snake River 8915 9.6 6.2 155 14.4 12.1 119 Old Battle 10000 10.0 10.5 95 10.6 13.5 79 Sage Creek Basin 7850 3.9 4.2 93 5.4 5.9 92 Sandstone RS 8150 4.6 3.7 124 4.5 7.2 62 Whiskey Park 8950 7.5 7.7 97 11.2 10.0 112 ----- ----- Basin Index (%) 111 96 UPPER GREEN RIVER Big Sandy Opening 9080 6.9 4.7 147 9.8 5.2 188 Blind Bull Sum 8650 11.7 7.5 156 13.5 7.7 175 East Rim Divide 7930 4.6 3.3 139 7.8 4.5 173 Elkhart Park G.S. 9400 4.1 4.4 93 9.6 5.3 181 Gros Ventre Summit 8750 5.1 4.7 109 9.1 5.2 175 Gunsight Pass 9820 5.4 4.3 126 9.7 5.2 187 Kendall R.S. 7740 6.4 3.7 173 10.8 5.3 204 Loomis Park 8240 7.5 4.9 153 12.7 6.6 192 New Fork Lake 8340 5.0 3.4 147 5.8 4.3 135 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 4.7 3.9 121 9.9 5.3 187 Spring Creek Divide 9000 10.3 8.0 129 15.6 8.9 175 Triple Peak 8500 12.1 6.8 178 16.9 9.1 186 ----- ----- Basin Index (%) 141 181 LOWER GREEN RIVER Blacks Fork Jct 8870 3.8 -M * 5.8 -M * Buck Pasture 9700 5.4 -M * 8.4 -M * EF Blacks Fork GS 9360 5.0 -M * 5.5 -M * Hams Fork 7840 4.0 3.4 118 7.9 4.3 184 Hewinta 9519 3.8 2.9 131 6.1 5.7 107 Hickerson Park 9145 3.2 2.0 160 3.4 4.4 77 Hole-in-Rock 9150 2.1 2.3 91 3.9 4.2 93 Indian Creek 9425 9.8 8.1 121 13.5 8.0 169 Kelley R.S. 8180 6.8 4.6 148 12.3 6.9 178 Spirit Lk 10235 4.5 -M * 6.5 -M * Steel Creek Park 10200 5.6 5.4 104 7.7 6.5 118 ----- ----- Basin Index (%) 123 137 UPPER BEAR RIVER Bear River RS 8777 4.0 -M * 5.9 -M * Bug Lake 7950 9.0 5.3 170 10.3 7.5 137 Burts Miller Ranch 8000 2.3 -M * 3.1 -M * Chalk Creek #1 8993 9.5 8.4 113 11.9 9.9 120 Hayden Fork 9212 7.0 4.3 163 10.7 8.1 132 Kelley R.S. 8180 6.8 4.6 148 12.3 6.9 178 Lily Lake 9156 4.4 4.4 100 6.9 7.0 99 Monte Cristo 8960 9.2 8.2 112 12.3 9.8 126 Salt River Summit 7760 4.2 3.5 120 9.9 6.1 162 ----- ----- Basin Index (%) 129 134 ----------------------------------------------------------------------------- -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.