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 FRIDAY: FEBRUARY 3 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 16.2 10.9 149 24.1 14.3 169 Black Bear 8170 23.1 23.5 98 32.2 25.3 127 Blind Bull Sum 8650 23.7 14.1 168 -M 13.1 * Cottonwood Creek 7670 16.8 13.3 126 23.0 16.1 143 East Rim Divide 7930 11.5 6.9 167 13.7 7.8 176 Grand Targhee 9260 29.5 23.8 124 27.0 20.9 129 Granite Creek 6770 16.8 10.8 156 21.4 13.9 154 Grassy Lake 7265 24.9 20.7 120 36.0 24.4 148 Gros Ventre Summit 8750 10.1 8.5 119 14.4 8.4 171 Gunsight Pass 9820 11.0 8.4 131 15.0 9.0 167 Lewis Lake Divide 7850 21.1 20.2 104 33.0 23.6 140 Phillips Bench 8200 19.7 16.0 123 29.3 18.6 158 Salt River Summit 7760 12.6 8.0 158 18.1 10.8 168 Snake River Station 6920 15.1 11.1 136 23.3 15.8 147 Spring Creek Divide 9000 21.0 14.7 143 23.7 15.7 151 Thumb Divide 7980 11.1 9.6 116 16.4 12.4 132 Togwotee Pass 9580 19.2 15.2 126 23.0 16.1 143 Two Ocean Plateau 9240 25.1 18.0 139 25.0 17.6 142 Willow Creek 8380 20.5 17.5 117 31.6 22.0 144 Younts Peak 8350 13.7 9.8 140 17.7 10.7 165 ----- ----- Basin Index (%) 129 148 MADISON-GALLATIN Black Bear 8170 23.1 23.5 98 32.2 25.3 127 Canyon 7870 10.6 8.3 128 16.7 10.9 153 Madison Plateau 7750 14.0 14.1 99 22.9 17.6 130 West Yellowstone 6700 7.7 7.1 108 15.4 9.8 157 Whiskey Creek 6800 8.7 9.7 90 16.5 13.5 122 ----- ----- Basin Index (%) 102 135 YELLOWSTONE Beartooth Lake 9360 17.1 14.1 121 13.2 13.1 101 Burnt Mtn 5880 5.2 2.5 208 9.5 8.0 119 Canyon 7870 10.6 8.3 128 16.7 10.9 153 Cole Creek 7850 6.6 8.5 78 5.3 7.8 68 Evening Star 9200 20.5 16.6 123 26.7 18.3 146 Fisher Creek 9100 19.4 20.9 93 24.6 21.2 116 Northeast Entrance 7350 7.4 6.5 114 12.4 8.4 148 Parker Peak 9400 17.6 13.3 132 19.5 11.5 170 Sylvan Lake 8420 14.1 13.2 107 24.5 15.1 162 Thumb Divide 7980 11.1 9.6 116 16.4 12.4 132 Two Ocean Plateau 9240 25.1 18.0 139 25.0 17.6 142 White Mill 8700 16.3 14.9 109 19.0 15.7 121 Wolverine 7650 -M 7.2 * -M 8.3 * ----- ----- Basin Index (%) 117 133 WIND RIVER Burroughs Creek 8750 13.2 -M * 15.6 -M * Castle Creek 8400 7.6 -M * 9.6 -M * Cold Springs 9630 6.7 4.7 143 8.9 6.3 141 Deer Park 9700 17.9 9.4 190 21.5 12.5 172 Hobbs Park 10100 12.5 8.0 156 12.5 7.9 158 Kirwin 9550 10.3 5.9 175 13.3 7.3 182 Little Warm 9370 7.8 6.5 120 12.8 8.3 154 Owl Creek 8975 4.3 3.1 139 5.8 3.6 161 South Pass 9040 17.1 9.3 184 16.4 11.2 146 St. Lawrence Alt 8620 3.3 4.2 79 7.6 5.4 141 Togwotee Pass 9580 19.2 15.2 126 23.0 16.1 143 Townsend Creek 8700 7.0 5.3 132 9.9 7.2 138 ----- ----- Basin Index (%) 148 153 BIGHORN BASIN Bald Mtn. 9380 13.0 10.9 119 11.2 10.9 103 Bear Trap Meadow 8200 3.1 3.5 89 4.6 5.2 88 Bone Springs Div 9350 10.3 9.9 104 10.2 9.7 105 Grave Springs 8550 3.7 4.9 76 4.7 6.6 71 Kirwin 9550 10.3 5.9 175 13.3 7.3 182 Marquette 8760 5.3 -M * 8.8 -M * Middle Powder 7760 4.5 6.4 70 4.8 7.5 64 Owl Creek 8975 4.3 3.1 139 5.8 3.6 161 Powder River Pass 9480 4.1 6.6 62 6.6 8.0 82 Shell Creek 9580 10.5 9.2 114 8.1 9.1 89 Timber Creek 7950 3.7 3.0 123 5.1 4.5 113 ----- ----- Basin Index (%) 106 103 SHOSHONE RIVER Blackwater 9780 21.1 14.9 142 23.2 13.5 172 Evening Star 9200 20.5 16.6 123 26.7 18.3 146 Marquette 8760 5.3 -M * 8.8 -M * Sylvan Road 7120 10.4 7.9 132 20.6 12.1 170 Younts Peak 8350 13.7 9.8 140 17.7 10.7 165 ----- ----- Basin Index (%) 134 162 POWDER RIVER Bear Trap Meadow 8200 3.1 3.5 89 4.6 5.2 88 Cloud Peak Reservoir 9860 7.6 8.5 89 9.1 8.0 114 Grave Springs 8550 3.7 4.9 76 4.7 6.6 71 Hansen Sawmill 8360 5.1 4.0 128 7.0 5.1 137 Middle Powder 7760 4.5 6.4 70 4.8 7.5 64 Powder River Pass 9480 4.1 6.6 62 6.6 8.0 82 Soldier Park 8720 7.4 -M * 6.9 -M * ----- ----- Basin Index (%) 83 91 TONGUE RIVER Big Goose 7990 5.5 4.9 112 6.6 6.6 100 Bone Springs Div 9350 10.3 9.9 104 10.2 9.7 105 Burgess Junction 7880 6.3 6.7 94 7.2 7.6 95 Dome Lake 8880 6.8 6.9 99 8.4 8.5 99 Little Goose 8870 6.1 -M * 8.1 -M * Sucker Creek 8880 7.0 7.2 97 7.0 8.8 80 Tie Creek 6870 4.2 3.4 124 7.2 7.2 100 ----- ----- Basin Index (%) 103 96 BELLE FOURCHE Cole Canyon 5910 3.5 3.3 106 4.4 5.7 77 ----- ----- Basin Index (%) 106 77 CHEYENNE RIVER BASIN Blind Park 6890 4.5 4.8 94 5.6 7.9 71 North Rapid Creek 6130 4.4 4.3 102 4.7 6.3 75 ----- ----- Basin Index (%) 98 73 UPPER N. PLATTE Arapaho Ridge 10960 19.6 13.4 146 20.3 14.4 141 Blackhall Mtn 9820 25.9 -M * 26.9 -M * Columbine 9160 19.7 14.9 132 21.9 16.6 132 Divide Peak 8880 13.7 12.5 110 16.2 13.9 117 Joe Wright 10120 15.0 13.1 115 20.4 16.3 125 Laprele Creek 8375 7.0 5.5 127 6.8 7.6 89 Med Bow 10500 27.1 -M * 25.1 -M * North French Creek 10130 17.2 16.2 106 18.9 17.1 111 Never Summer 10280 16.5 12.8 129 14.1 -M * Old Battle 10000 25.8 19.4 133 27.1 22.8 119 Rawah 9020 10.0 6.3 159 12.7 9.1 140 Sage Creek Basin 7850 11.3 8.6 131 11.8 10.0 118 Sand Lake 10050 20.0 16.7 120 19.1 15.4 124 South Brush Creek 8440 7.2 7.4 97 8.7 9.7 90 Tower 10500 31.9 28.0 114 32.5 25.8 126 Webber Springs 9250 20.4 14.1 145 24.1 17.3 139 Willow Creek Pass 9540 -M 7.8 * -M 8.4 * Zirkel 9340 28.3 18.8 151 30.6 19.3 159 ----- ----- Basin Index (%) 127 126 SWEETWATER Deer Park 9700 17.9 9.4 190 21.5 12.5 172 Larsen Creek 9000 12.5 7.5 167 15.8 -M * South Pass 9040 17.1 9.3 184 16.4 11.2 146 ----- ----- Basin Index (%) 181 160 LOWER N. PLATTE Casper Mtn. 7900 6.4 7.6 84 6.6 9.1 73 Laprele Creek 8375 7.0 5.5 127 6.8 7.6 89 Reno Hill 8400 7.3 7.8 94 7.4 9.0 82 Windy Peak 7900 5.7 4.2 136 6.4 6.4 100 ----- ----- Basin Index (%) 105 85 LARAMIE RIVER Brooklyn Lake 10240 16.9 12.0 141 15.5 13.1 118 Cinnabar Park 9574 13.6 13.4 101 16.5 16.3 101 Crow Creek 8330 4.0 5.7 70 6.1 6.4 95 Deadman Hill 10220 14.5 10.3 141 14.1 10.4 136 Rawah 9020 10.0 6.3 159 12.7 9.1 140 Roach 9700 12.5 10.1 124 15.0 12.0 125 ----- ----- Basin Index (%) 124 119 S. PLATTE Black Mountain 8920 7.2 -M * 8.5 -M * Crow Creek 8330 4.0 5.7 70 6.1 6.4 95 Deadman Hill 10220 14.5 10.3 141 14.1 10.4 136 ----- ----- Basin Index (%) 116 120 LITTLE SNAKE RIVER Battle Mountain 7440 8.8 7.2 122 11.8 9.8 120 Divide Peak 8880 13.7 12.5 110 16.2 13.9 117 Elk River 8700 15.8 11.6 136 15.8 13.0 122 Little Snake River 8915 23.5 15.9 148 28.5 21.1 135 Old Battle 10000 25.8 19.4 133 27.1 22.8 119 Sage Creek Basin 7850 11.3 8.6 131 11.8 10.0 118 Sandstone RS 8150 10.8 8.2 132 11.9 12.2 98 Whiskey Park 8950 20.5 16.4 125 23.0 18.2 126 ----- ----- Basin Index (%) 130 121 UPPER GREEN RIVER Big Sandy Opening 9080 13.5 8.4 161 15.9 8.5 187 Blind Bull Sum 8650 23.7 14.1 168 -M 13.1 * East Rim Divide 7930 11.5 6.9 167 13.7 7.8 176 Elkhart Park G.S. 9400 10.7 7.6 141 16.0 8.6 186 Gros Ventre Summit 8750 10.1 8.5 119 14.4 8.4 171 Gunsight Pass 9820 11.0 8.4 131 15.0 9.0 167 Kendall R.S. 7740 13.9 7.8 178 18.2 9.4 194 Loomis Park 8240 16.0 9.7 165 20.8 11.5 181 New Fork Lake 8340 10.6 6.8 156 10.9 7.2 151 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 12.5 7.7 162 17.2 9.4 183 Spring Creek Divide 9000 21.0 14.7 143 23.7 15.7 151 Triple Peak 8500 22.8 13.5 169 -M 16.4 * ----- ----- Basin Index (%) 155 174 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 11.4 7.3 156 13.4 7.4 181 Hewinta 9519 8.9 5.9 151 11.1 8.8 126 Hickerson Park 9145 6.1 3.9 156 6.4 6.2 103 Hole-in-Rock 9150 5.1 4.1 124 6.9 5.8 119 Indian Creek 9425 21.7 14.7 148 -M 14.3 * Kelley R.S. 8180 15.5 9.2 168 20.6 11.8 175 Spirit Lk 10235 9.9 -M * 11.5 -M * Steel Creek Park 10200 11.9 8.8 135 13.5 10.1 134 ----- ----- Basin Index (%) 150 144 UPPER BEAR RIVER Bear River RS 8777 9.8 -M * 11.8 -M * Bug Lake 7950 21.7 11.2 194 21.2 12.6 168 Burts Miller Ranch 8000 5.6 -M * 6.4 -M * Chalk Creek #1 8993 21.9 13.4 163 23.4 16.0 146 Hayden Fork 9212 15.7 8.8 178 20.4 13.4 152 Kelley R.S. 8180 15.5 9.2 168 20.6 11.8 175 Lily Lake 9156 10.8 7.5 144 13.1 10.9 120 Monte Cristo 8960 22.2 16.1 138 23.6 16.6 142 Salt River Summit 7760 12.6 8.0 158 18.1 10.8 168 ----- ----- Basin Index (%) 162 152 ----------------------------------------------------------------------------- -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.