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 THURSDAY: FEBRUARY 2 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.9 10.9 146 23.6 14.2 166 Black Bear 8170 22.9 23.4 98 32.0 25.2 127 Blind Bull Sum 8650 23.0 14.0 164 -M 13.0 * Cottonwood Creek 7670 16.4 13.1 125 22.7 16.1 141 East Rim Divide 7930 11.3 6.8 166 13.5 7.8 173 Grand Targhee 9260 28.8 23.7 122 26.8 20.8 129 Granite Creek 6770 16.4 10.7 153 21.2 13.8 154 Grassy Lake 7265 24.3 20.5 119 35.6 24.3 147 Gros Ventre Summit 8750 9.9 8.5 116 14.2 8.3 171 Gunsight Pass 9820 10.8 8.3 130 14.7 8.9 165 Lewis Lake Divide 7850 20.7 20.1 103 32.3 23.4 138 Phillips Bench 8200 19.2 16.0 120 28.9 18.4 157 Salt River Summit 7760 12.5 7.9 158 18.0 10.8 167 Snake River Station 6920 14.5 11.0 132 23.3 15.7 148 Spring Creek Divide 9000 20.7 14.6 142 23.2 15.6 149 Thumb Divide 7980 10.9 9.6 114 16.0 12.3 130 Togwotee Pass 9580 18.7 15.1 124 22.4 16.0 140 Two Ocean Plateau 9240 24.5 17.8 138 24.6 17.5 141 Willow Creek 8380 20.2 17.3 117 31.2 21.9 142 Younts Peak 8350 13.2 9.7 136 17.1 10.6 161 ----- ----- Basin Index (%) 127 146 MADISON-GALLATIN Black Bear 8170 22.9 23.4 98 32.0 25.2 127 Canyon 7870 10.2 8.2 124 16.4 10.9 150 Madison Plateau 7750 14.0 14.1 99 23.1 17.5 132 West Yellowstone 6700 7.9 7.0 113 15.3 9.8 156 Whiskey Creek 6800 9.0 9.6 94 16.8 13.4 125 ----- ----- Basin Index (%) 103 135 YELLOWSTONE Beartooth Lake 9360 16.8 14.0 120 12.9 13.0 99 Burnt Mtn 5880 5.1 2.4 212 9.3 7.9 118 Canyon 7870 10.2 8.2 124 16.4 10.9 150 Cole Creek 7850 6.5 8.4 77 5.0 7.7 65 Evening Star 9200 20.0 16.5 121 26.3 18.1 145 Fisher Creek 9100 19.2 20.8 92 24.3 21.0 116 Northeast Entrance 7350 7.0 6.5 108 12.2 8.4 145 Parker Peak 9400 17.2 13.2 130 19.6 11.5 170 Sylvan Lake 8420 13.7 13.1 105 24.2 15.0 161 Thumb Divide 7980 10.9 9.6 114 16.0 12.3 130 Two Ocean Plateau 9240 24.5 17.8 138 24.6 17.5 141 White Mill 8700 16.0 14.8 108 18.8 15.6 121 Wolverine 7650 -M 7.1 * -M 8.3 * ----- ----- Basin Index (%) 115 132 WIND RIVER Burroughs Creek 8750 12.6 -M * 15.0 -M * Castle Creek 8400 7.3 -M * 9.4 -M * Cold Springs 9630 6.5 4.6 141 8.7 6.2 140 Deer Park 9700 18.0 9.4 191 21.5 12.4 173 Hobbs Park 10100 12.5 8.0 156 12.5 7.8 160 Kirwin 9550 10.0 5.9 169 12.8 7.3 175 Little Warm 9370 7.3 6.4 114 12.3 8.2 150 Owl Creek 8975 4.2 3.1 135 5.7 3.6 158 South Pass 9040 17.0 9.1 187 16.3 11.1 147 St. Lawrence Alt 8620 3.4 4.2 81 7.6 5.3 143 Togwotee Pass 9580 18.7 15.1 124 22.4 16.0 140 Townsend Creek 8700 6.9 5.3 130 9.8 7.1 138 ----- ----- Basin Index (%) 147 152 BIGHORN BASIN Bald Mtn. 9380 12.8 10.9 117 11.0 10.8 102 Bear Trap Meadow 8200 3.2 3.4 94 4.6 5.2 88 Bone Springs Div 9350 10.2 9.9 103 10.2 9.7 105 Grave Springs 8550 3.7 4.9 76 4.7 6.5 72 Kirwin 9550 10.0 5.9 169 12.8 7.3 175 Marquette 8760 5.1 -M * 8.6 -M * Middle Powder 7760 4.6 6.4 72 4.8 7.4 65 Owl Creek 8975 4.2 3.1 135 5.7 3.6 158 Powder River Pass 9480 4.0 6.6 61 6.5 7.9 82 Shell Creek 9580 10.4 9.2 113 8.2 9.0 91 Timber Creek 7950 3.7 2.9 128 5.1 4.5 113 ----- ----- Basin Index (%) 106 102 SHOSHONE RIVER Blackwater 9780 20.6 14.8 139 23.0 13.4 172 Evening Star 9200 20.0 16.5 121 26.3 18.1 145 Marquette 8760 5.1 -M * 8.6 -M * Sylvan Road 7120 10.0 7.9 127 20.2 12.0 168 Younts Peak 8350 13.2 9.7 136 17.1 10.6 161 ----- ----- Basin Index (%) 130 160 POWDER RIVER Bear Trap Meadow 8200 3.2 3.4 94 4.6 5.2 88 Cloud Peak Reservoir 9860 7.5 8.4 89 9.0 8.0 112 Grave Springs 8550 3.7 4.9 76 4.7 6.5 72 Hansen Sawmill 8360 5.2 4.0 130 7.0 5.1 137 Middle Powder 7760 4.6 6.4 72 4.8 7.4 65 Powder River Pass 9480 4.0 6.6 61 6.5 7.9 82 Soldier Park 8720 7.7 -M * 7.0 -M * ----- ----- Basin Index (%) 84 91 TONGUE RIVER Big Goose 7990 5.5 4.9 112 6.6 6.6 100 Bone Springs Div 9350 10.2 9.9 103 10.2 9.7 105 Burgess Junction 7880 6.1 6.7 91 7.1 7.6 93 Dome Lake 8880 6.7 6.9 97 8.3 8.4 99 Little Goose 8870 6.1 -M * 8.1 -M * Sucker Creek 8880 7.0 7.1 99 7.0 8.8 80 Tie Creek 6870 4.1 3.4 121 7.3 7.2 101 ----- ----- Basin Index (%) 102 96 BELLE FOURCHE Cole Canyon 5910 3.4 3.2 106 4.4 5.7 77 ----- ----- Basin Index (%) 106 77 CHEYENNE RIVER BASIN Blind Park 6890 4.5 4.7 96 5.6 7.8 72 North Rapid Creek 6130 4.4 4.3 102 4.7 6.3 75 ----- ----- Basin Index (%) 99 73 UPPER N. PLATTE Arapaho Ridge 10960 18.8 13.3 141 19.6 14.2 138 Blackhall Mtn 9820 25.3 -M * 26.8 -M * Columbine 9160 19.0 14.8 128 21.2 16.5 128 Divide Peak 8880 13.4 12.4 108 16.0 13.7 117 Joe Wright 10120 14.6 13.0 112 20.5 16.2 127 Laprele Creek 8375 6.9 5.4 128 6.7 7.5 89 Med Bow 10500 26.3 -M * -M -M * North French Creek 10130 16.9 16.1 105 18.4 17.0 108 Never Summer 10280 16.3 12.7 128 13.9 -M * Old Battle 10000 25.1 19.2 131 26.6 22.6 118 Rawah 9020 9.9 6.3 157 12.6 9.1 138 Sage Creek Basin 7850 11.1 8.5 131 11.7 10.0 117 Sand Lake 10050 19.4 16.6 117 18.8 15.2 124 South Brush Creek 8440 7.2 7.4 97 8.6 9.6 90 Tower 10500 30.5 27.8 110 32.5 25.7 126 Webber Springs 9250 19.9 13.9 143 23.6 17.1 138 Willow Creek Pass 9540 13.1 7.7 170 14.1 8.4 168 Zirkel 9340 27.6 18.7 148 29.8 19.2 155 ----- ----- Basin Index (%) 126 126 SWEETWATER Deer Park 9700 18.0 9.4 191 21.5 12.4 173 Larsen Creek 9000 12.4 7.4 168 15.7 -M * South Pass 9040 17.0 9.1 187 16.3 11.1 147 ----- ----- Basin Index (%) 183 161 LOWER N. PLATTE Casper Mtn. 7900 6.5 7.6 86 6.7 9.1 74 Laprele Creek 8375 6.9 5.4 128 6.7 7.5 89 Reno Hill 8400 7.3 7.7 95 7.5 8.9 84 Windy Peak 7900 5.7 4.2 136 6.3 6.4 98 ----- ----- Basin Index (%) 106 85 LARAMIE RIVER Brooklyn Lake 10240 16.3 12.0 136 15.1 13.0 116 Cinnabar Park 9574 13.3 13.3 100 16.0 16.1 99 Crow Creek 8330 3.9 5.7 68 5.9 6.4 92 Deadman Hill 10220 14.1 10.2 138 14.0 10.3 136 Rawah 9020 9.9 6.3 157 12.6 9.1 138 Roach 9700 12.4 10.0 124 14.7 11.9 124 ----- ----- Basin Index (%) 122 117 S. PLATTE Black Mountain 8920 7.1 -M * 8.4 -M * Crow Creek 8330 3.9 5.7 68 5.9 6.4 92 Deadman Hill 10220 14.1 10.2 138 14.0 10.3 136 ----- ----- Basin Index (%) 113 119 LITTLE SNAKE RIVER Battle Mountain 7440 8.7 7.1 123 11.6 9.7 120 Divide Peak 8880 13.4 12.4 108 16.0 13.7 117 Elk River 8700 15.6 11.4 137 15.7 12.8 123 Little Snake River 8915 22.7 15.7 145 28.4 20.9 136 Old Battle 10000 25.1 19.2 131 26.6 22.6 118 Sage Creek Basin 7850 11.1 8.5 131 11.7 10.0 117 Sandstone RS 8150 10.5 8.1 130 11.9 12.1 98 Whiskey Park 8950 20.0 16.2 123 22.4 18.0 124 ----- ----- Basin Index (%) 129 120 UPPER GREEN RIVER Big Sandy Opening 9080 13.5 8.3 163 15.8 8.4 188 Blind Bull Sum 8650 23.0 14.0 164 -M 13.0 * East Rim Divide 7930 11.3 6.8 166 13.5 7.8 173 Elkhart Park G.S. 9400 10.4 7.5 139 15.5 8.6 180 Gros Ventre Summit 8750 9.9 8.5 116 14.2 8.3 171 Gunsight Pass 9820 10.8 8.3 130 14.7 8.9 165 Kendall R.S. 7740 -M 7.8 * -M 9.4 * Loomis Park 8240 15.7 9.6 164 20.4 11.4 179 New Fork Lake 8340 10.4 6.8 153 10.7 7.1 151 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 12.3 7.6 162 17.1 9.3 184 Spring Creek Divide 9000 20.7 14.6 142 23.2 15.6 149 Triple Peak 8500 22.3 13.5 165 -M 16.3 * ----- ----- Basin Index (%) 152 170 LOWER GREEN RIVER Blacks Fork Jct 8870 8.4 -M * 10.5 -M * Buck Pasture 9700 13.9 -M * 16.4 -M * EF Blacks Fork GS 9360 9.2 -M * 9.8 -M * Hams Fork 7840 11.3 7.2 157 13.4 7.3 184 Hewinta 9519 8.8 5.8 152 11.0 8.7 126 Hickerson Park 9145 6.1 3.8 161 6.4 6.2 103 Hole-in-Rock 9150 5.1 4.0 128 6.9 5.8 119 Indian Creek 9425 21.6 14.7 147 -M 14.2 * Kelley R.S. 8180 15.4 9.1 169 20.6 11.7 176 Spirit Lk 10235 9.8 -M * 11.4 -M * Steel Creek Park 10200 11.9 8.8 135 13.5 10.0 135 ----- ----- Basin Index (%) 150 144 UPPER BEAR RIVER Bear River RS 8777 9.8 -M * 11.8 -M * Bug Lake 7950 21.4 11.0 195 21.0 12.5 168 Burts Miller Ranch 8000 5.6 -M * 6.4 -M * Chalk Creek #1 8993 21.9 13.4 163 23.4 15.8 148 Hayden Fork 9212 15.7 8.7 180 20.4 13.2 155 Kelley R.S. 8180 15.4 9.1 169 20.6 11.7 176 Lily Lake 9156 10.8 7.4 146 13.1 10.8 121 Monte Cristo 8960 22.0 16.0 138 23.5 16.5 142 Salt River Summit 7760 12.5 7.9 158 18.0 10.8 167 ----- ----- Basin Index (%) 163 153 ----------------------------------------------------------------------------- -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.