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 8 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 11.6 11.2 104 12.1 14.6 83 Black Bear 8170 24.4 24.7 99 23.3 26.0 90 Blind Bull Sum 8650 18.6 14.9 125 11.2 13.5 83 Cottonwood Creek 7670 20.4 13.6 150 21.6 16.6 130 East Rim Divide 7930 8.9 7.0 127 7.2 8.1 89 Grand Targhee 9260 29.6 24.6 120 20.6 21.6 95 Granite Creek 6770 11.7 11.3 104 11.5 14.3 80 Grassy Lake 7265 22.9 21.7 106 22.9 25.1 91 Gros Ventre Summit 8750 7.9 8.7 91 7.8 8.6 91 Gunsight Pass 9820 9.2 8.7 106 9.4 9.4 100 Lewis Lake Divide 7850 17.9 21.2 84 21.2 24.2 88 Phillips Bench 8200 20.2 16.5 122 19.7 19.1 103 Salt River Summit 7640 11.2 8.3 135 11.7 11.2 104 Snake River Station 6920 12.2 11.9 103 14.4 16.2 89 Spring Creek Divide 9000 19.8 15.4 129 19.0 16.1 118 Thumb Divide 7980 10.2 9.8 104 10.3 12.7 81 Togwotee Pass 9580 18.3 15.6 117 17.3 16.6 104 Two Ocean Plateau 9240 19.9 18.7 106 15.6 18.2 86 Willow Creek 8080 25.8 18.1 143 26.3 22.5 117 Younts Peak 8350 11.7 10.1 116 9.7 10.9 89 ----- ----- Basin Index (%) 114 96 MADISON-GALLATIN Black Bear 8170 24.4 24.7 99 23.3 26.0 90 Canyon 7870 9.6 8.6 112 10.0 11.3 88 Madison Plateau 7750 15.3 14.8 103 12.5 18.1 69 West Yellowstone 6700 8.2 7.2 114 7.0 10.2 69 Whiskey Creek 6800 11.0 9.9 111 12.6 13.9 91 ----- ----- Basin Index (%) 105 82 YELLOWSTONE Beartooth Lake 9360 15.6 14.5 108 14.3 13.4 107 Burnt Mtn 5880 3.7 2.7 137 8.5 8.3 102 Canyon 7870 9.6 8.6 112 10.0 11.3 88 Cole Creek 7850 11.5 8.7 132 8.9 7.9 113 Evening Star 9200 19.0 16.7 114 20.7 18.8 110 Fisher Creek 9100 21.6 21.6 100 22.3 21.8 102 Northeast Entrance 7350 7.8 6.7 116 8.9 8.6 103 Parker Peak 9400 17.9 13.5 133 16.2 11.9 136 Sylvan Lake 8420 14.3 13.5 106 16.1 15.5 104 Thumb Divide 7980 10.2 9.8 104 10.3 12.7 81 Two Ocean Plateau 9240 19.9 18.7 106 15.6 18.2 86 White Mill 8700 17.7 15.3 116 14.5 16.2 90 Wolverine 7650 9.6 7.3 132 9.4 8.5 111 Younts Peak 8350 11.7 10.1 116 9.7 10.9 89 ----- ----- Basin Index (%) 113 101 WIND RIVER Burroughs Creek 8750 8.2 -M * 9.7 -M * Castle Creek 8400 3.6 -M * 4.4 -M * Cold Springs 9630 5.5 4.8 115 5.3 6.5 82 Deer Park 9700 8.7 9.5 92 7.6 13.0 58 Hobbs Park 10100 8.8 8.0 110 7.6 8.1 94 Kirwin 9550 8.0 6.1 131 6.6 7.5 88 Little Warm 9370 7.9 6.6 120 6.7 8.5 79 Owl Creek 8975 4.1 3.1 132 4.5 3.7 122 South Pass 9040 7.8 9.7 80 6.9 11.5 60 St. Lawrence Alt 8620 4.0 4.2 95 5.0 5.6 89 Togwotee Pass 9580 18.3 15.6 117 17.3 16.6 104 Townsend Creek 8700 6.4 5.6 114 6.3 7.4 85 ----- ----- Basin Index (%) 109 83 BIGHORN BASIN Bald Mtn. 9380 15.1 11.3 134 11.9 11.1 107 Bear Trap Meadow 8200 6.6 3.6 183 6.9 5.3 130 Bone Springs Div 9350 12.2 10.0 122 10.2 10.0 102 Grave Springs 8550 7.7 5.1 151 -M 6.8 * Kirwin 9550 8.0 6.1 131 6.6 7.5 88 Marquette 8760 4.9 -M * 6.2 -M * Middle Powder 7760 8.8 6.7 131 9.3 7.7 121 Owl Creek 8975 4.1 3.1 132 4.5 3.7 122 Powder River Pass 9480 9.2 6.9 133 9.0 8.2 110 Shell Creek 9580 10.7 9.5 113 10.4 9.2 113 Timber Creek 7950 4.4 3.1 142 5.0 4.6 109 ----- ----- Basin Index (%) 133 110 SHOSHONE RIVER Blackwater 9780 15.1 15.0 101 14.9 13.8 108 Evening Star 9200 19.0 16.7 114 20.7 18.8 110 Marquette 8760 4.9 -M * 6.2 -M * Sylvan Lake 8420 14.3 13.5 106 16.1 15.5 104 Sylvan Road 7120 8.6 8.0 108 -M 12.4 * Younts Peak 8350 11.7 10.1 116 9.7 10.9 89 ----- ----- Basin Index (%) 109 104 POWDER RIVER Bear Trap Meadow 8200 6.6 3.6 183 6.9 5.3 130 Cloud Peak Reservoir 9860 9.4 8.8 107 8.8 8.2 107 Grave Springs 8550 7.7 5.1 151 -M 6.8 * Hansen Sawmill 8360 5.1 4.1 124 6.2 5.3 117 Middle Powder 7760 8.8 6.7 131 9.3 7.7 121 Powder River Pass 9480 9.2 6.9 133 9.0 8.2 110 Soldier Park 8720 3.6 -M * 6.2 -M * ----- ----- Basin Index (%) 133 116 TONGUE RIVER Big Goose 7990 5.9 5.1 116 7.0 6.8 103 Bone Springs Div 9350 12.2 10.0 122 10.2 10.0 102 Burgess Junction 7880 7.3 7.0 104 8.5 7.8 109 Dome Lake 8880 8.4 7.2 117 6.7 8.7 77 Little Goose 8870 7.0 -M * 5.8 -M * Sucker Creek 8880 9.5 7.4 128 8.3 9.1 91 Tie Creek 6870 5.7 3.6 158 9.1 7.4 123 ----- ----- Basin Index (%) 122 100 BELLE FOURCHE Blind Park 6890 5.8 5.2 112 6.3 8.1 78 Cole Canyon 5910 2.6 3.7 70 -M 6.1 * ----- ----- Basin Index (%) 94 78 CHEYENNE RIVER BASIN Blind Park 6890 5.8 5.2 112 6.3 8.1 78 North Rapid Creek 6130 5.3 4.7 113 6.3 6.5 97 ----- ----- Basin Index (%) 112 86 UPPER N. PLATTE Arapaho Ridge 10960 15.9 13.9 114 15.5 15.0 103 Blackhall Mtn 9820 20.3 -M * 20.2 -M * Columbine 9160 22.1 15.6 142 20.6 17.1 120 Divide Peak 8880 15.7 13.3 118 16.6 14.4 115 Joe Wright 10120 13.9 13.4 104 18.4 16.8 110 Laprele Creek 8375 8.6 5.8 148 8.8 7.9 111 Med Bow 10500 31.0 -M * 25.6 -M * Never Summer 10280 13.8 13.1 105 10.2 -M * North French Creek 10130 24.4 16.9 144 23.7 17.5 135 Old Battle 10000 22.8 20.4 112 20.6 23.5 88 Rawah 9020 -M 6.7 * -M 9.4 * Sage Creek Basin 7850 12.3 8.9 138 10.0 10.3 97 Sand Lake 10050 20.7 17.3 120 19.3 15.8 122 South Brush Creek 8440 9.9 7.6 130 10.0 9.9 101 Tower 10500 32.0 29.5 108 28.9 26.7 108 Webber Springs 9250 15.7 15.0 105 17.1 17.8 96 Whiskey Park 8950 23.9 17.1 140 23.5 18.8 125 Willow Creek Pass 9540 9.2 8.0 115 8.7 8.6 101 Zirkel 9340 20.4 19.4 105 22.9 20.1 114 ----- ----- Basin Index (%) 120 110 SWEETWATER Deer Park 9700 8.7 9.5 92 7.6 13.0 58 Larsen Creek 9000 3.3 7.9 42 5.5 -M * South Pass 9040 7.8 9.7 80 6.9 11.5 60 ----- ----- Basin Index (%) 73 59 LOWER N. PLATTE Casper Mtn. 7900 11.8 8.0 148 7.8 9.4 83 Laprele Creek 8375 8.6 5.8 148 8.8 7.9 111 Reno Hill 8400 11.4 8.2 139 11.6 9.4 123 Windy Peak 7900 6.8 4.4 155 5.7 6.6 86 ----- ----- Basin Index (%) 146 102 LARAMIE RIVER Brooklyn Lake 10240 19.1 12.4 154 18.5 13.5 137 Cinnabar Park 9574 17.2 13.8 125 18.8 16.9 111 Crow Creek 8330 6.6 5.7 116 8.4 6.6 127 Deadman Hill 10220 12.7 10.6 120 11.1 10.7 104 Rawah 9020 -M 6.7 * -M 9.4 * Roach 9700 10.4 10.6 98 10.0 12.4 81 Windy Peak 7900 6.8 4.4 155 5.7 6.6 86 ----- ----- Basin Index (%) 127 109 S. PLATTE Black Mountain 8920 7.7 -M * 9.3 -M * Crow Creek 8330 6.6 5.7 116 8.4 6.6 127 Deadman Hill 10220 12.7 10.6 120 11.1 10.7 104 ----- ----- Basin Index (%) 118 113 LITTLE SNAKE RIVER Battle Mountain 7440 11.4 7.5 152 11.3 10.1 112 Divide Peak 8880 15.7 13.3 118 16.6 14.4 115 Elk River 8700 15.8 12.2 130 12.9 13.4 96 Little Snake River 8915 20.3 16.6 122 24.6 21.8 113 Old Battle 10000 22.8 20.4 112 20.6 23.5 88 Sage Creek Basin 7850 12.3 8.9 138 10.0 10.3 97 Sandstone RS 8150 13.0 8.6 151 12.0 12.5 96 Whiskey Park 8950 23.9 17.1 140 23.5 18.8 125 ----- ----- Basin Index (%) 129 105 UPPER GREEN RIVER Big Sandy Opening 9080 6.9 8.6 80 5.8 8.7 67 Blind Bull Sum 8650 18.6 14.9 125 11.2 13.5 83 East Rim Divide 7930 8.9 7.0 127 7.2 8.1 89 Elkhart Park G.S. 9400 7.9 7.8 101 7.5 8.9 84 Gros Ventre Summit 8750 7.9 8.7 91 7.8 8.6 91 Gunsight Pass 9820 9.2 8.7 106 9.4 9.4 100 Indian Creek 9425 17.1 15.2 112 12.3 14.8 83 Kendall R.S. 7740 7.6 8.1 94 7.7 9.7 79 Loomis Park 8240 10.4 10.0 104 12.9 11.8 109 New Fork Lake 8340 8.1 7.0 116 6.2 7.4 84 Pocket Creek 9360 -M -M * 5.6 -M * Snider Basin 8060 10.7 8.2 130 11.0 9.7 113 Spring Creek Divide 9000 19.8 15.4 129 19.0 16.1 118 Triple Peak 8500 19.7 14.0 141 19.7 16.8 117 ----- ----- Basin Index (%) 114 96 LOWER GREEN RIVER Blacks Fork Jct 8869 5.9 -M * 9.0 -M * Buck Pasture 9632 13.7 -M * 13.4 -M * EF Blacks Fork GS 9360 11.0 -M * 7.4 -M * Hams Fork 7840 9.8 7.6 129 8.7 7.6 114 Hewinta 9500 8.0 6.3 127 10.9 9.0 121 Hickerson Park 9122 8.0 4.1 195 8.5 6.4 133 Hole-in-Rock 9168 8.1 4.2 193 8.2 6.0 137 Indian Creek 9425 17.1 15.2 112 12.3 14.8 83 Kelley R.S. 8180 12.0 9.5 126 12.5 12.1 103 Spirit Lk 10235 12.6 -M * 13.4 -M * Steel Creek Park 10158 10.5 9.2 114 13.4 10.4 129 ----- ----- Basin Index (%) 131 112 UPPER BEAR RIVER Bear River RS 8777 6.7 -M * 8.0 -M * Bug Lake 7987 15.2 12.0 127 13.9 13.0 107 Burts Miller Ranch 8000 5.2 -M * 5.4 -M * Chalk Creek #1 9171 14.9 14.1 106 13.7 16.4 84 Hayden Fork 9130 12.1 9.2 132 15.2 13.8 110 Kelley R.S. 8180 12.0 9.5 126 12.5 12.1 103 Lily Lake 9133 8.6 7.7 112 8.9 11.2 79 Monte Cristo 8932 21.1 16.8 126 18.8 17.1 110 Salt River Summit 7640 11.2 8.3 135 11.7 11.2 104 Spring Creek Divide 9000 19.8 15.4 129 19.0 16.1 118 ----- ----- Basin Index (%) 124 103 ----------------------------------------------------------------------------- -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.