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 14 , 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 12.4 98 12.6 15.3 82 Black Bear 8170 25.0 26.9 93 23.7 27.3 87 Blind Bull Sum 8650 19.0 15.7 121 11.4 14.2 80 Cottonwood Creek 7670 21.0 14.5 145 22.0 17.5 126 East Rim Divide 7930 9.3 7.2 129 7.4 8.4 88 Grand Targhee 9260 30.5 26.0 117 21.3 22.9 93 Granite Creek 6770 12.0 12.1 99 11.3 14.8 76 Grassy Lake 7265 23.8 23.5 101 23.9 26.4 91 Gros Ventre Summit 8750 8.1 8.9 91 8.0 8.9 90 Gunsight Pass 9820 9.6 9.2 104 9.7 9.8 99 Lewis Lake Divide 7850 18.4 22.8 81 21.7 25.6 85 Phillips Bench 8200 21.0 17.6 119 20.4 20.1 101 Salt River Summit 7640 11.6 9.0 129 11.9 11.8 101 Snake River Station 6920 12.5 12.9 97 14.8 16.9 88 Spring Creek Divide 9000 20.1 16.2 124 19.3 17.1 113 Thumb Divide 7980 10.7 10.4 103 10.8 13.2 82 Togwotee Pass 9580 19.3 16.3 118 18.4 17.4 106 Two Ocean Plateau 9240 21.3 19.3 110 16.7 19.3 87 Willow Creek 8080 26.7 19.0 141 26.8 23.8 113 Younts Peak 8350 12.5 10.6 118 10.5 11.4 92 ----- ----- Basin Index (%) 111 94 MADISON-GALLATIN Black Bear 8170 25.0 26.9 93 23.7 27.3 87 Canyon 7870 10.3 9.2 112 10.6 11.8 90 Madison Plateau 7750 15.7 15.5 101 -M 18.9 * West Yellowstone 6700 8.5 7.5 113 7.2 10.6 68 Whiskey Creek 6800 11.3 10.5 108 12.9 14.5 89 ----- ----- Basin Index (%) 102 85 YELLOWSTONE Beartooth Lake 9360 16.4 15.2 108 15.2 14.2 107 Burnt Mtn 5880 4.8 3.3 145 9.6 8.5 113 Canyon 7870 10.3 9.2 112 10.6 11.8 90 Cole Creek 7850 13.6 8.8 155 10.2 8.3 123 Evening Star 9200 19.8 17.3 114 21.7 19.8 110 Fisher Creek 9100 23.2 22.7 102 23.8 22.8 104 Northeast Entrance 7350 8.2 7.2 114 9.3 9.0 103 Parker Peak 9400 19.0 13.9 137 17.1 12.5 137 Sylvan Lake 8420 15.4 13.9 111 17.1 16.2 106 Thumb Divide 7980 10.7 10.4 103 10.8 13.2 82 Two Ocean Plateau 9240 21.3 19.3 110 16.7 19.3 87 White Mill 8700 19.0 16.1 118 15.6 17.0 92 Wolverine 7650 10.2 7.8 131 10.0 9.0 111 Younts Peak 8350 12.5 10.6 118 10.5 11.4 92 ----- ----- Basin Index (%) 116 103 WIND RIVER Burroughs Creek 8750 8.5 -M * 10.0 -M * Castle Creek 8400 3.8 -M * 4.5 -M * Cold Springs 9630 5.7 5.0 114 5.4 6.6 82 Deer Park 9700 9.1 9.6 95 8.1 13.6 60 Hobbs Park 10100 9.3 8.4 111 8.1 8.5 95 Kirwin 9550 8.5 6.2 137 7.2 7.9 91 Little Warm 9370 8.3 7.1 117 6.8 8.9 76 Owl Creek 8975 4.9 3.2 153 5.1 3.8 134 South Pass 9040 8.2 10.0 82 7.3 11.9 61 St. Lawrence Alt 8620 4.3 4.5 96 5.3 5.7 93 Togwotee Pass 9580 19.3 16.3 118 18.4 17.4 106 Townsend Creek 8700 6.9 5.8 119 7.0 7.7 91 ----- ----- Basin Index (%) 111 86 BIGHORN BASIN Bald Mtn. 9380 16.7 12.6 133 13.0 11.7 111 Bear Trap Meadow 8200 -M 3.8 * 7.6 5.5 138 Bone Springs Div 9350 13.1 10.6 124 11.0 10.5 105 Grave Springs 8550 8.4 5.5 153 -M 7.1 * Kirwin 9550 8.5 6.2 137 7.2 7.9 91 Marquette 8760 5.4 -M * 6.7 -M * Middle Powder 7760 9.9 7.0 141 10.0 7.9 127 Owl Creek 8975 4.9 3.2 153 5.1 3.8 134 Powder River Pass 9480 9.7 7.1 137 9.5 8.5 112 Shell Creek 9580 11.1 10.0 111 10.9 9.6 114 Timber Creek 7950 4.9 3.1 158 5.4 4.8 112 ----- ----- Basin Index (%) 134 114 SHOSHONE RIVER Blackwater 9780 15.9 15.4 103 15.9 14.4 110 Evening Star 9200 19.8 17.3 114 21.7 19.8 110 Marquette 8760 5.4 -M * 6.7 -M * Sylvan Lake 8420 15.4 13.9 111 17.1 16.2 106 Sylvan Road 7120 9.3 8.6 108 13.0 12.8 102 Younts Peak 8350 12.5 10.6 118 10.5 11.4 92 ----- ----- Basin Index (%) 111 105 POWDER RIVER Bear Trap Meadow 8200 -M 3.8 * 7.6 5.5 138 Cloud Peak Reservoir 9860 10.3 9.4 110 9.8 8.6 114 Grave Springs 8550 8.4 5.5 153 -M 7.1 * Hansen Sawmill 8360 5.4 4.3 126 6.5 5.4 120 Middle Powder 7760 9.9 7.0 141 10.0 7.9 127 Powder River Pass 9480 9.7 7.1 137 9.5 8.5 112 Soldier Park 8720 3.9 -M * 6.6 -M * ----- ----- Basin Index (%) 131 121 TONGUE RIVER Big Goose 7990 6.5 5.6 116 7.8 7.2 108 Bone Springs Div 9350 13.1 10.6 124 11.0 10.5 105 Burgess Junction 7880 8.8 7.3 121 9.9 8.1 122 Dome Lake 8880 9.0 7.6 118 7.2 9.0 80 Little Goose 8870 7.8 -M * 6.3 -M * Sucker Creek 8880 10.7 7.8 137 9.5 9.5 100 Tie Creek 6870 7.0 3.8 184 10.4 7.6 137 ----- ----- Basin Index (%) 129 108 BELLE FOURCHE Blind Park 6890 6.2 5.5 113 6.7 8.4 80 Cole Canyon 5910 2.5 4.3 58 -M 6.5 * ----- ----- Basin Index (%) 89 80 CHEYENNE RIVER BASIN Blind Park 6890 6.2 5.5 113 6.7 8.4 80 North Rapid Creek 6130 5.7 5.2 110 6.9 6.9 100 ----- ----- Basin Index (%) 111 89 UPPER N. PLATTE Arapaho Ridge 10960 16.6 14.5 114 16.2 15.8 103 Blackhall Mtn 9820 21.5 -M * 21.1 -M * Columbine 9160 23.2 16.9 137 20.2 18.2 111 Divide Peak 8880 16.2 13.9 117 17.0 15.1 113 Joe Wright 10120 15.0 14.1 106 19.6 17.7 111 Laprele Creek 8375 9.1 6.3 144 9.3 8.3 112 Med Bow 10500 33.0 -M * 27.0 -M * Never Summer 10280 14.9 13.8 108 10.9 -M * North French Creek 10130 26.1 18.6 140 25.1 18.7 134 Old Battle 10000 23.6 21.5 110 20.8 24.9 84 Rawah 9020 10.1 7.2 140 11.5 9.7 119 Sage Creek Basin 7850 12.6 9.3 135 10.2 10.8 94 Sand Lake 10050 22.1 18.2 121 20.4 16.7 122 South Brush Creek 8440 10.5 8.0 131 10.5 10.4 101 Tower 10500 33.7 31.7 106 29.6 28.3 105 Webber Springs 9250 16.3 16.2 101 17.7 18.7 95 Whiskey Park 8950 25.3 18.5 137 24.6 20.0 123 Willow Creek Pass 9540 9.9 8.4 118 9.3 9.1 102 Zirkel 9340 21.7 20.4 106 24.1 21.0 115 ----- ----- Basin Index (%) 119 109 SWEETWATER Deer Park 9700 9.1 9.6 95 8.1 13.6 60 Larsen Creek 9000 -M 8.3 * 5.7 -M * South Pass 9040 8.2 10.0 82 7.3 11.9 61 ----- ----- Basin Index (%) 88 60 LOWER N. PLATTE Casper Mtn. 7900 12.8 8.5 151 8.6 9.9 87 Laprele Creek 8375 9.1 6.3 144 9.3 8.3 112 Reno Hill 8400 12.4 8.5 146 12.5 9.9 126 Windy Peak 7900 7.3 4.9 149 6.0 7.0 86 ----- ----- Basin Index (%) 148 104 LARAMIE RIVER Brooklyn Lake 10240 20.1 13.5 149 19.5 14.2 137 Cinnabar Park 9574 18.4 15.3 120 19.8 17.8 111 Crow Creek 8330 7.0 6.1 115 8.9 7.0 127 Deadman Hill 10220 13.7 11.2 122 12.0 11.3 106 Rawah 9020 10.1 7.2 140 11.5 9.7 119 Roach 9700 11.2 11.2 100 10.8 13.0 83 Windy Peak 7900 7.3 4.9 149 6.0 7.0 86 ----- ----- Basin Index (%) 127 111 S. PLATTE Black Mountain 8920 8.6 -M * 10.3 -M * Crow Creek 8330 7.0 6.1 115 8.9 7.0 127 Deadman Hill 10220 13.7 11.2 122 12.0 11.3 106 ----- ----- Basin Index (%) 120 114 LITTLE SNAKE RIVER Battle Mountain 7440 11.4 8.3 137 11.5 10.8 106 Divide Peak 8880 16.2 13.9 117 17.0 15.1 113 Elk River 8700 16.4 13.3 123 13.6 14.2 96 Little Snake River 8915 21.1 17.8 119 25.3 22.8 111 Old Battle 10000 23.6 21.5 110 20.8 24.9 84 Sage Creek Basin 7850 12.6 9.3 135 10.2 10.8 94 Sandstone RS 8150 13.2 9.5 139 12.3 13.4 92 Whiskey Park 8950 25.3 18.5 137 24.6 20.0 123 ----- ----- Basin Index (%) 125 102 UPPER GREEN RIVER Big Sandy Opening 9080 6.9 8.8 78 6.0 9.2 65 Blind Bull Sum 8650 19.0 15.7 121 11.4 14.2 80 East Rim Divide 7930 9.3 7.2 129 7.4 8.4 88 Elkhart Park G.S. 9400 8.2 8.3 99 7.7 9.3 83 Gros Ventre Summit 8750 8.1 8.9 91 8.0 8.9 90 Gunsight Pass 9820 9.6 9.2 104 9.7 9.8 99 Indian Creek 9425 17.3 16.2 107 12.5 15.6 80 Kendall R.S. 7740 7.7 8.7 89 7.7 10.2 75 Loomis Park 8240 10.9 10.5 104 13.4 12.3 109 New Fork Lake 8340 8.2 7.4 111 -M 7.7 * Pocket Creek 9360 -M -M * 5.8 -M * Snider Basin 8060 10.7 8.8 122 11.2 10.2 110 Spring Creek Divide 9000 20.1 16.2 124 19.3 17.1 113 Triple Peak 8500 20.4 15.3 133 20.2 17.7 114 ----- ----- Basin Index (%) 111 94 LOWER GREEN RIVER Blacks Fork Jct 8869 5.9 -M * 9.1 -M * Buck Pasture 9632 13.9 -M * 13.6 -M * EF Blacks Fork GS 9360 11.4 -M * 7.6 -M * Hams Fork 7840 9.9 8.2 121 8.9 8.1 110 Hewinta 9500 8.2 6.8 121 11.1 9.6 116 Hickerson Park 9122 8.4 4.8 175 8.9 6.8 131 Hole-in-Rock 9168 8.4 4.6 183 8.5 6.3 135 Indian Creek 9425 17.3 16.2 107 12.5 15.6 80 Kelley R.S. 8180 11.8 10.1 117 12.4 12.8 97 Spirit Lk 10235 12.9 -M * 13.7 -M * Steel Creek Park 10158 11.7 10.0 117 13.8 11.0 125 ----- ----- Basin Index (%) 125 108 UPPER BEAR RIVER Bear River RS 8777 6.8 -M * 8.1 -M * Bug Lake 7987 15.2 12.8 119 14.0 13.7 102 Burts Miller Ranch 8000 5.2 -M * 5.4 -M * Chalk Creek #1 9171 15.0 15.5 97 14.0 17.3 81 Hayden Fork 9130 12.3 10.3 119 15.4 14.5 106 Kelley R.S. 8180 11.8 10.1 117 12.4 12.8 97 Lily Lake 9133 8.8 8.6 102 9.1 11.8 77 Monte Cristo 8932 21.3 18.2 117 19.0 18.0 106 Salt River Summit 7640 11.6 9.0 129 11.9 11.8 101 Spring Creek Divide 9000 20.1 16.2 124 19.3 17.1 113 ----- ----- Basin Index (%) 115 98 ----------------------------------------------------------------------------- -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.