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 13 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 12.1 12.2 99 12.6 15.1 83 Black Bear 8170 25.0 26.7 94 23.6 26.9 88 Blind Bull Sum 8650 19.0 15.5 123 11.4 14.0 81 Cottonwood Creek 7670 21.0 14.3 147 22.1 17.3 128 East Rim Divide 7930 9.3 7.1 131 7.4 8.3 89 Grand Targhee 9260 30.5 25.7 119 21.2 22.8 93 Granite Creek 6770 11.9 11.9 100 -M 14.7 * Grassy Lake 7265 23.8 23.2 103 23.9 26.1 92 Gros Ventre Summit 8750 8.2 8.8 93 8.0 8.8 91 Gunsight Pass 9820 9.6 9.1 105 9.6 9.8 98 Lewis Lake Divide 7850 18.3 22.6 81 21.7 25.2 86 Phillips Bench 8200 21.0 17.4 121 20.4 19.9 103 Salt River Summit 7640 11.7 8.9 131 11.9 11.6 103 Snake River Station 6920 12.6 12.7 99 14.9 16.8 89 Spring Creek Divide 9000 20.1 16.1 125 19.3 16.8 115 Thumb Divide 7980 10.6 10.3 103 10.7 13.1 82 Togwotee Pass 9580 19.3 16.1 120 18.3 17.2 106 Two Ocean Plateau 9240 21.2 19.2 110 16.3 19.1 85 Willow Creek 8080 26.6 18.7 142 26.8 23.5 114 Younts Peak 8350 12.6 10.5 120 10.4 11.4 91 ----- ----- Basin Index (%) 112 96 MADISON-GALLATIN Black Bear 8170 25.0 26.7 94 23.6 26.9 88 Canyon 7870 10.3 9.0 114 10.5 11.7 90 Madison Plateau 7750 15.6 15.4 101 11.6 18.7 62 West Yellowstone 6700 8.4 7.5 112 7.2 10.5 69 Whiskey Creek 6800 11.2 10.4 108 12.8 14.3 90 ----- ----- Basin Index (%) 102 80 YELLOWSTONE Beartooth Lake 9360 16.4 15.1 109 15.1 14.0 108 Burnt Mtn 5880 4.8 3.2 150 9.2 8.5 108 Canyon 7870 10.3 9.0 114 10.5 11.7 90 Cole Creek 7850 13.2 8.8 150 10.0 8.2 122 Evening Star 9200 19.7 17.1 115 21.6 19.7 110 Fisher Creek 9100 23.1 22.5 103 23.7 22.5 105 Northeast Entrance 7350 8.2 7.2 114 9.3 9.0 103 Parker Peak 9400 18.9 13.9 136 17.0 12.4 137 Sylvan Lake 8420 15.3 13.7 112 17.1 16.0 107 Thumb Divide 7980 10.6 10.3 103 10.7 13.1 82 Two Ocean Plateau 9240 21.2 19.2 110 16.3 19.1 85 White Mill 8700 19.0 16.0 119 15.6 16.8 93 Wolverine 7650 10.2 7.7 132 9.9 8.9 111 Younts Peak 8350 12.6 10.5 120 10.4 11.4 91 ----- ----- Basin Index (%) 117 103 WIND RIVER Burroughs Creek 8750 8.5 -M * 9.8 -M * Castle Creek 8400 3.8 -M * 4.4 -M * Cold Springs 9630 5.6 4.9 114 5.2 6.6 79 Deer Park 9700 9.1 9.6 95 7.8 13.5 58 Hobbs Park 10100 9.0 8.3 108 7.6 8.3 92 Kirwin 9550 8.4 6.1 138 7.0 7.8 90 Little Warm 9370 8.1 7.0 116 6.4 8.8 73 Owl Creek 8975 4.7 3.2 147 5.0 3.8 132 South Pass 9040 8.0 9.9 81 7.1 11.8 60 St. Lawrence Alt 8620 4.0 4.4 91 5.2 5.7 91 Togwotee Pass 9580 19.3 16.1 120 18.3 17.2 106 Townsend Creek 8700 6.7 5.7 118 6.8 7.7 88 ----- ----- Basin Index (%) 110 84 BIGHORN BASIN Bald Mtn. 9380 16.5 12.3 134 12.6 11.6 109 Bear Trap Meadow 8200 -M 3.7 * 7.3 5.5 133 Bone Springs Div 9350 13.1 10.5 125 10.8 10.4 104 Grave Springs 8550 8.3 5.4 154 8.8 7.0 126 Kirwin 9550 8.4 6.1 138 7.0 7.8 90 Marquette 8760 5.3 -M * 6.5 -M * Middle Powder 7760 9.8 6.9 142 9.9 7.9 125 Owl Creek 8975 4.7 3.2 147 5.0 3.8 132 Powder River Pass 9480 9.6 7.0 137 9.3 8.5 109 Shell Creek 9580 11.1 9.9 112 10.8 9.5 114 Timber Creek 7950 4.8 3.1 155 5.4 4.8 112 ----- ----- Basin Index (%) 134 113 SHOSHONE RIVER Blackwater 9780 15.8 15.3 103 15.8 14.3 110 Evening Star 9200 19.7 17.1 115 21.6 19.7 110 Marquette 8760 5.3 -M * 6.5 -M * Sylvan Lake 8420 15.3 13.7 112 17.1 16.0 107 Sylvan Road 7120 9.3 8.5 109 13.0 12.7 102 Younts Peak 8350 12.6 10.5 120 10.4 11.4 91 ----- ----- Basin Index (%) 112 105 POWDER RIVER Bear Trap Meadow 8200 -M 3.7 * 7.3 5.5 133 Cloud Peak Reservoir 9860 10.1 9.3 109 9.4 8.5 111 Grave Springs 8550 8.3 5.4 154 8.8 7.0 126 Hansen Sawmill 8360 5.3 4.3 123 6.3 5.4 117 Middle Powder 7760 9.8 6.9 142 9.9 7.9 125 Powder River Pass 9480 9.6 7.0 137 9.3 8.5 109 Soldier Park 8720 3.7 -M * 6.3 -M * ----- ----- Basin Index (%) 131 119 TONGUE RIVER Big Goose 7990 6.4 5.5 116 7.2 7.1 101 Bone Springs Div 9350 13.1 10.5 125 10.8 10.4 104 Burgess Junction 7880 8.7 7.3 119 9.7 8.1 120 Dome Lake 8880 8.9 7.6 117 7.0 9.0 78 Little Goose 8870 7.6 -M * 6.0 -M * Sucker Creek 8880 10.6 7.7 138 9.3 9.4 99 Tie Creek 6870 6.8 3.7 184 10.3 7.6 136 ----- ----- Basin Index (%) 129 105 BELLE FOURCHE Blind Park 6890 6.0 5.5 109 6.3 8.4 75 Cole Canyon 5910 2.5 4.2 60 -M 6.5 * ----- ----- Basin Index (%) 88 75 CHEYENNE RIVER BASIN Blind Park 6890 6.0 5.5 109 6.3 8.4 75 North Rapid Creek 6130 5.6 5.1 110 6.7 6.9 97 ----- ----- Basin Index (%) 109 85 UPPER N. PLATTE Arapaho Ridge 10960 16.4 14.4 114 16.0 15.5 103 Blackhall Mtn 9820 21.4 -M * 21.0 -M * Columbine 9160 22.8 16.7 137 20.7 18.0 115 Divide Peak 8880 16.1 13.8 117 16.9 15.0 113 Joe Wright 10120 14.9 13.9 107 19.4 17.5 111 Laprele Creek 8375 9.0 6.2 145 9.2 8.2 112 Med Bow 10500 32.7 -M * 26.8 -M * Never Summer 10280 14.8 13.6 109 10.8 -M * North French Creek 10130 25.8 18.3 141 24.6 18.5 133 Old Battle 10000 23.4 21.4 109 20.8 24.6 85 Rawah 9020 9.9 7.2 138 11.4 9.7 118 Sage Creek Basin 7850 12.5 9.2 136 10.2 10.7 95 Sand Lake 10050 21.8 18.0 121 20.1 16.5 122 South Brush Creek 8440 10.5 7.9 133 10.4 10.3 101 Tower 10500 33.2 31.4 106 29.1 28.0 104 Webber Springs 9250 16.2 16.0 101 17.6 18.5 95 Whiskey Park 8950 24.9 18.2 137 24.1 19.8 122 Willow Creek Pass 9540 9.9 8.3 119 9.2 9.0 102 Zirkel 9340 21.4 20.1 106 23.7 20.7 114 ----- ----- Basin Index (%) 119 109 SWEETWATER Deer Park 9700 9.1 9.6 95 7.8 13.5 58 Larsen Creek 9000 -M 8.2 * 5.6 -M * South Pass 9040 8.0 9.9 81 7.1 11.8 60 ----- ----- Basin Index (%) 88 59 LOWER N. PLATTE Casper Mtn. 7900 12.7 8.4 151 8.6 9.8 88 Laprele Creek 8375 9.0 6.2 145 9.2 8.2 112 Reno Hill 8400 12.3 8.4 146 12.4 9.8 127 Windy Peak 7900 7.2 4.8 150 5.9 6.9 86 ----- ----- Basin Index (%) 148 104 LARAMIE RIVER Brooklyn Lake 10240 20.0 13.3 150 19.3 14.0 138 Cinnabar Park 9574 18.2 15.0 121 19.4 17.6 110 Crow Creek 8330 6.9 6.0 115 8.6 6.9 125 Deadman Hill 10220 13.6 11.1 123 11.9 11.2 106 Rawah 9020 9.9 7.2 138 11.4 9.7 118 Roach 9700 11.1 11.1 100 10.7 12.9 83 Windy Peak 7900 7.2 4.8 150 5.9 6.9 86 ----- ----- Basin Index (%) 127 110 S. PLATTE Black Mountain 8920 8.5 -M * 10.1 -M * Crow Creek 8330 6.9 6.0 115 8.6 6.9 125 Deadman Hill 10220 13.6 11.1 123 11.9 11.2 106 ----- ----- Basin Index (%) 120 113 LITTLE SNAKE RIVER Battle Mountain 7440 11.3 8.1 140 11.5 10.7 107 Divide Peak 8880 16.1 13.8 117 16.9 15.0 113 Elk River 8700 16.2 13.1 124 13.4 14.0 96 Little Snake River 8915 21.0 17.7 119 25.1 22.7 111 Old Battle 10000 23.4 21.4 109 20.8 24.6 85 Sage Creek Basin 7850 12.5 9.2 136 10.2 10.7 95 Sandstone RS 8150 13.1 9.4 139 12.2 13.2 92 Whiskey Park 8950 24.9 18.2 137 24.1 19.8 122 ----- ----- Basin Index (%) 125 103 UPPER GREEN RIVER Big Sandy Opening 9080 6.9 8.8 78 5.8 9.0 64 Blind Bull Sum 8650 19.0 15.5 123 11.4 14.0 81 East Rim Divide 7930 9.3 7.1 131 7.4 8.3 89 Elkhart Park G.S. 9400 8.1 8.2 99 7.6 9.2 83 Gros Ventre Summit 8750 8.2 8.8 93 8.0 8.8 91 Gunsight Pass 9820 9.6 9.1 105 9.6 9.8 98 Indian Creek 9425 17.3 16.1 107 12.4 15.4 81 Kendall R.S. 7740 7.7 8.7 89 7.6 10.1 75 Loomis Park 8240 10.9 10.4 105 13.4 12.2 110 New Fork Lake 8340 8.2 7.3 112 -M 7.6 * Pocket Creek 9360 -M -M * 5.6 -M * Snider Basin 8060 10.7 8.7 123 11.2 10.0 112 Spring Creek Divide 9000 20.1 16.1 125 19.3 16.8 115 Triple Peak 8500 20.3 15.1 134 20.2 17.4 116 ----- ----- Basin Index (%) 112 95 LOWER GREEN RIVER Blacks Fork Jct 8869 6.0 -M * 9.2 -M * Buck Pasture 9632 14.0 -M * 13.6 -M * EF Blacks Fork GS 9360 11.5 -M * 7.7 -M * Hams Fork 7840 10.0 8.1 123 8.9 7.9 113 Hewinta 9500 8.3 6.7 124 11.1 9.5 117 Hickerson Park 9122 8.4 4.7 179 8.9 6.7 133 Hole-in-Rock 9168 8.4 4.5 187 8.5 6.2 137 Indian Creek 9425 17.3 16.1 107 12.4 15.4 81 Kelley R.S. 8180 12.0 10.0 120 12.6 12.6 100 Spirit Lk 10235 13.0 -M * 13.7 -M * Steel Creek Park 10158 11.6 9.8 118 13.8 10.9 127 ----- ----- Basin Index (%) 127 110 UPPER BEAR RIVER Bear River RS 8777 6.8 -M * 8.1 -M * Bug Lake 7987 15.2 12.7 120 14.0 13.5 104 Burts Miller Ranch 8000 5.2 -M * 5.4 -M * Chalk Creek #1 9171 15.0 15.4 97 13.9 17.1 81 Hayden Fork 9130 12.3 10.1 122 15.4 14.4 107 Kelley R.S. 8180 12.0 10.0 120 12.6 12.6 100 Lily Lake 9133 8.8 8.5 104 9.2 11.7 79 Monte Cristo 8932 21.3 18.0 118 19.0 17.7 107 Salt River Summit 7640 11.7 8.9 131 11.9 11.6 103 Spring Creek Divide 9000 20.1 16.1 125 19.3 16.8 115 ----- ----- Basin Index (%) 117 100 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.