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: FEBRUARY 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 16.8 10.9 154 24.6 14.3 172 Black Bear 8170 24.1 23.5 103 33.2 25.4 131 Blind Bull Sum 8650 24.2 14.3 169 -M 13.2 * Cottonwood Creek 7670 16.9 13.4 126 23.3 16.3 143 East Rim Divide 7930 11.7 6.9 170 13.9 7.9 176 Grand Targhee 9260 29.8 24.0 124 27.3 21.1 129 Granite Creek 6770 17.4 10.9 160 21.8 13.9 157 Grassy Lake 7265 25.6 20.9 122 37.0 24.5 151 Gros Ventre Summit 8750 10.4 8.6 121 14.6 8.4 174 Gunsight Pass 9820 11.2 8.4 133 15.2 9.1 167 Lewis Lake Divide 7850 22.3 20.3 110 33.7 23.6 143 Phillips Bench 8200 20.3 16.0 127 29.7 18.7 159 Salt River Summit 7760 12.9 8.1 159 18.5 10.9 170 Snake River Station 6920 15.5 11.3 137 24.6 15.8 156 Spring Creek Divide 9000 21.3 14.9 143 24.1 15.8 153 Thumb Divide 7980 11.8 9.6 123 16.9 12.4 136 Togwotee Pass 9580 19.5 15.2 128 23.4 16.2 144 Two Ocean Plateau 9240 25.7 18.2 141 25.5 17.7 144 Willow Creek 8380 20.8 17.7 118 31.9 22.2 144 Younts Peak 8350 14.2 9.9 143 18.3 10.7 171 ----- ----- Basin Index (%) 132 150 MADISON-GALLATIN Black Bear 8170 24.1 23.5 103 33.2 25.4 131 Canyon 7870 10.8 8.4 129 17.0 11.0 155 Madison Plateau 7750 14.8 14.2 104 23.8 17.7 134 West Yellowstone 6700 8.4 7.1 118 15.9 9.9 161 Whiskey Creek 6800 9.6 9.7 99 17.3 13.5 128 ----- ----- Basin Index (%) 108 138 YELLOWSTONE Beartooth Lake 9360 17.6 14.2 124 13.8 13.2 105 Burnt Mtn 5880 5.4 2.5 216 9.6 8.1 119 Canyon 7870 10.8 8.4 129 17.0 11.0 155 Cole Creek 7850 7.1 8.6 83 5.6 7.8 72 Evening Star 9200 21.0 16.6 127 27.1 18.4 147 Fisher Creek 9100 20.1 21.1 95 25.0 21.3 117 Northeast Entrance 7350 7.4 6.6 112 12.6 8.5 148 Parker Peak 9400 18.4 13.3 138 20.8 11.6 179 Sylvan Lake 8420 14.3 13.3 108 25.0 15.2 164 Thumb Divide 7980 11.8 9.6 123 16.9 12.4 136 Two Ocean Plateau 9240 25.7 18.2 141 25.5 17.7 144 White Mill 8700 16.5 15.0 110 19.6 15.8 124 Wolverine 7650 -M 7.2 * -M 8.4 * ----- ----- Basin Index (%) 119 136 WIND RIVER Burroughs Creek 8750 13.5 -M * 15.9 -M * Castle Creek 8400 7.8 -M * 10.0 -M * Cold Springs 9630 6.8 4.7 145 9.1 6.3 144 Deer Park 9700 18.2 9.5 192 21.6 12.6 171 Hobbs Park 10100 12.8 8.0 160 12.6 8.0 158 Kirwin 9550 10.6 6.0 177 13.6 7.4 184 Little Warm 9370 8.0 6.5 123 13.0 8.4 155 Owl Creek 8975 4.5 3.1 145 6.0 3.6 167 South Pass 9040 17.4 9.5 183 16.6 11.2 148 St. Lawrence Alt 8620 3.9 4.2 93 7.8 5.4 144 Togwotee Pass 9580 19.5 15.2 128 23.4 16.2 144 Townsend Creek 8700 7.2 5.4 133 10.1 7.2 140 ----- ----- Basin Index (%) 151 155 BIGHORN BASIN Bald Mtn. 9380 13.1 11.0 119 11.6 10.9 106 Bear Trap Meadow 8200 3.5 3.5 100 5.0 5.2 96 Bone Springs Div 9350 10.4 9.9 105 10.6 9.8 108 Grave Springs 8550 3.9 5.0 78 4.9 6.6 74 Kirwin 9550 10.6 6.0 177 13.6 7.4 184 Marquette 8760 5.6 -M * 9.1 -M * Middle Powder 7760 4.8 6.4 75 5.3 7.6 70 Owl Creek 8975 4.5 3.1 145 6.0 3.6 167 Powder River Pass 9480 4.1 6.7 61 7.0 8.0 88 Shell Creek 9580 10.8 9.2 117 8.5 9.1 93 Timber Creek 7950 3.9 3.0 130 5.2 4.6 113 ----- ----- Basin Index (%) 109 107 SHOSHONE RIVER Blackwater 9780 21.7 14.9 146 24.4 13.5 181 Evening Star 9200 21.0 16.6 127 27.1 18.4 147 Marquette 8760 5.6 -M * 9.1 -M * Sylvan Road 7120 10.7 7.9 135 20.8 12.1 172 Younts Peak 8350 14.2 9.9 143 18.3 10.7 171 ----- ----- Basin Index (%) 137 166 POWDER RIVER Bear Trap Meadow 8200 3.5 3.5 100 5.0 5.2 96 Cloud Peak Reservoir 9860 7.8 8.5 92 9.5 8.0 119 Grave Springs 8550 3.9 5.0 78 4.9 6.6 74 Hansen Sawmill 8360 5.4 4.0 135 7.2 5.2 138 Middle Powder 7760 4.8 6.4 75 5.3 7.6 70 Powder River Pass 9480 4.1 6.7 61 7.0 8.0 88 Soldier Park 8720 8.1 -M * 7.3 -M * ----- ----- Basin Index (%) 87 96 TONGUE RIVER Big Goose 7990 5.9 5.0 118 6.9 6.7 103 Bone Springs Div 9350 10.4 9.9 105 10.6 9.8 108 Burgess Junction 7880 6.4 6.8 94 7.6 7.6 100 Dome Lake 8880 7.0 7.0 100 8.6 8.6 100 Little Goose 8870 6.4 -M * 8.5 -M * Sucker Creek 8880 7.3 7.2 101 7.5 8.9 84 Tie Creek 6870 4.5 3.4 132 7.7 7.2 107 ----- ----- Basin Index (%) 106 100 BELLE FOURCHE Cole Canyon 5910 3.6 3.3 109 4.7 5.8 81 ----- ----- Basin Index (%) 109 81 CHEYENNE RIVER BASIN Blind Park 6890 4.7 4.9 96 5.8 7.9 73 North Rapid Creek 6130 4.7 4.4 107 5.1 6.4 80 ----- ----- Basin Index (%) 101 76 UPPER N. PLATTE Arapaho Ridge 10960 19.6 13.5 145 20.3 14.5 140 Blackhall Mtn 9820 26.2 -M * 27.0 -M * Columbine 9160 19.8 15.0 132 22.0 16.8 131 Divide Peak 8880 13.8 12.7 109 16.3 14.0 116 Joe Wright 10120 15.2 13.2 115 21.0 16.4 128 Laprele Creek 8375 7.2 5.5 131 7.0 7.7 91 Med Bow 10500 27.2 -M * 25.7 -M * North French Creek 10130 17.4 16.3 107 19.0 17.3 110 Never Summer 10280 16.6 12.9 129 14.1 -M * Old Battle 10000 25.9 19.6 132 27.3 22.9 119 Rawah 9020 10.0 6.4 156 12.8 9.2 139 Sage Creek Basin 7850 11.3 8.7 130 11.9 10.0 119 Sand Lake 10050 20.1 16.8 120 19.2 15.4 125 South Brush Creek 8440 7.4 7.5 99 8.9 9.7 92 Tower 10500 32.4 28.2 115 34.2 26.1 131 Webber Springs 9250 20.7 14.4 144 24.4 17.4 140 Willow Creek Pass 9540 -M 7.9 * -M 8.4 * Zirkel 9340 28.9 19.0 152 31.0 19.6 158 ----- ----- Basin Index (%) 127 127 SWEETWATER Deer Park 9700 18.2 9.5 192 21.6 12.6 171 Larsen Creek 9000 12.7 7.5 169 16.0 -M * South Pass 9040 17.4 9.5 183 16.6 11.2 148 ----- ----- Basin Index (%) 182 161 LOWER N. PLATTE Casper Mtn. 7900 6.7 7.7 87 6.9 9.2 75 Laprele Creek 8375 7.2 5.5 131 7.0 7.7 91 Reno Hill 8400 7.7 7.8 99 7.9 9.2 86 Windy Peak 7900 5.9 4.3 137 6.6 6.5 102 ----- ----- Basin Index (%) 109 87 LARAMIE RIVER Brooklyn Lake 10240 17.0 12.1 140 15.6 13.2 118 Cinnabar Park 9574 13.7 13.5 101 16.5 16.5 100 Crow Creek 8330 4.0 5.7 70 6.0 6.5 92 Deadman Hill 10220 14.7 10.4 141 14.5 10.5 138 Rawah 9020 10.0 6.4 156 12.8 9.2 139 Roach 9700 12.7 10.2 125 15.1 12.1 125 ----- ----- Basin Index (%) 124 118 S. PLATTE Black Mountain 8920 7.3 -M * 8.5 -M * Crow Creek 8330 4.0 5.7 70 6.0 6.5 92 Deadman Hill 10220 14.7 10.4 141 14.5 10.5 138 ----- ----- Basin Index (%) 116 121 LITTLE SNAKE RIVER Battle Mountain 7440 8.8 7.2 122 11.9 9.9 120 Divide Peak 8880 13.8 12.7 109 16.3 14.0 116 Elk River 8700 15.9 11.7 136 15.9 13.1 121 Little Snake River 8915 -M 16.0 * -M 21.3 * Old Battle 10000 25.9 19.6 132 27.3 22.9 119 Sage Creek Basin 7850 11.3 8.7 130 11.9 10.0 119 Sandstone RS 8150 10.7 8.3 129 11.9 12.3 97 Whiskey Park 8950 20.7 16.6 125 23.1 18.3 126 ----- ----- Basin Index (%) 126 118 UPPER GREEN RIVER Big Sandy Opening 9080 13.7 8.5 161 16.0 8.5 188 Blind Bull Sum 8650 24.2 14.3 169 -M 13.2 * East Rim Divide 7930 11.7 6.9 170 13.9 7.9 176 Elkhart Park G.S. 9400 10.8 7.7 140 16.0 8.7 184 Gros Ventre Summit 8750 10.4 8.6 121 14.6 8.4 174 Gunsight Pass 9820 11.2 8.4 133 15.2 9.1 167 Kendall R.S. 7740 14.1 7.8 181 18.4 9.5 194 Loomis Park 8240 16.2 9.8 165 20.8 11.6 179 New Fork Lake 8340 10.8 6.8 159 10.9 7.2 151 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 12.6 7.8 162 17.3 9.5 182 Spring Creek Divide 9000 21.3 14.9 143 24.1 15.8 153 Triple Peak 8500 23.2 13.5 172 -M 16.5 * ----- ----- Basin Index (%) 157 174 LOWER GREEN RIVER Blacks Fork Jct 8870 8.3 -M * 10.6 -M * Buck Pasture 9700 14.0 -M * 16.5 -M * EF Blacks Fork GS 9360 10.0 -M * 9.5 -M * Hams Fork 7840 11.8 7.4 159 13.6 7.4 184 Hewinta 9519 8.9 6.0 148 11.1 8.9 125 Hickerson Park 9145 6.1 3.9 156 6.4 6.3 102 Hole-in-Rock 9150 5.0 4.1 122 6.9 5.9 117 Indian Creek 9425 22.2 14.8 150 -M 14.4 * Kelley R.S. 8180 15.8 9.2 172 21.0 11.8 178 Spirit Lk 10235 9.8 -M * 11.4 -M * Steel Creek Park 10200 12.0 8.9 135 13.5 10.2 132 ----- ----- Basin Index (%) 151 144 UPPER BEAR RIVER Bear River RS 8777 9.9 -M * 11.9 -M * Bug Lake 7950 21.9 11.4 192 20.3 12.7 160 Burts Miller Ranch 8000 5.6 -M * 6.1 -M * Chalk Creek #1 8993 22.2 13.4 166 23.6 16.0 148 Hayden Fork 9212 15.8 8.8 180 20.6 13.5 153 Kelley R.S. 8180 15.8 9.2 172 21.0 11.8 178 Lily Lake 9156 10.9 7.5 145 13.3 11.0 121 Monte Cristo 8960 22.4 16.1 139 -M 16.7 * Salt River Summit 7760 12.9 8.1 159 18.5 10.9 170 ----- ----- Basin Index (%) 164 155 ----------------------------------------------------------------------------- -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.