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 SUNDAY: FEBRUARY 9 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 12.0 11.4 105 12.5 14.8 84 Black Bear 8170 24.6 25.2 98 23.3 26.2 89 Blind Bull Sum 8650 18.8 15.0 125 11.3 13.6 83 Cottonwood Creek 7670 20.7 13.7 151 21.8 16.7 131 East Rim Divide 7930 9.1 7.0 130 7.3 8.1 90 Grand Targhee 9260 29.9 24.8 121 21.0 21.8 96 Granite Creek 6770 11.8 11.5 103 11.4 14.3 80 Grassy Lake 7265 23.4 21.9 107 23.3 25.3 92 Gros Ventre Summit 8750 8.3 8.7 95 8.0 8.6 93 Gunsight Pass 9820 9.4 8.7 108 9.4 9.5 99 Lewis Lake Divide 7850 18.1 21.5 84 21.5 24.5 88 Phillips Bench 8200 20.7 16.7 124 20.1 19.3 104 Salt River Summit 7640 11.2 8.4 133 11.6 11.3 103 Snake River Station 6920 12.3 12.0 102 14.6 16.3 90 Spring Creek Divide 9000 19.8 15.6 127 19.0 16.3 117 Thumb Divide 7980 10.5 9.9 106 10.6 12.7 83 Togwotee Pass 9580 18.8 15.6 121 17.8 16.7 107 Two Ocean Plateau 9240 20.8 18.8 111 16.2 18.3 89 Willow Creek 8080 26.0 18.1 144 26.4 22.7 116 Younts Peak 8350 12.1 10.2 119 9.8 11.0 89 ----- ----- Basin Index (%) 115 97 MADISON-GALLATIN Black Bear 8170 24.6 25.2 98 23.3 26.2 89 Canyon 7870 10.0 8.7 115 10.3 11.3 91 Madison Plateau 7750 15.4 14.9 103 12.3 18.2 68 West Yellowstone 6700 8.2 7.2 114 7.1 10.2 70 Whiskey Creek 6800 11.1 9.9 112 12.6 14.0 90 ----- ----- Basin Index (%) 105 82 YELLOWSTONE Beartooth Lake 9360 15.8 14.7 107 14.5 13.5 107 Burnt Mtn 5880 4.1 2.8 146 8.9 8.3 107 Canyon 7870 10.0 8.7 115 10.3 11.3 91 Cole Creek 7850 12.0 8.8 136 9.2 8.0 115 Evening Star 9200 19.3 16.7 116 21.1 19.0 111 Fisher Creek 9100 22.0 21.8 101 22.7 21.9 104 Northeast Entrance 7350 7.9 6.8 116 9.0 8.7 103 Parker Peak 9400 18.4 13.6 135 16.6 12.0 138 Sylvan Lake 8420 14.9 13.5 110 16.7 15.6 107 Thumb Divide 7980 10.5 9.9 106 10.6 12.7 83 Two Ocean Plateau 9240 20.8 18.8 111 16.2 18.3 89 White Mill 8700 18.1 15.4 118 14.8 16.3 91 Wolverine 7650 9.9 7.3 136 9.6 8.6 112 Younts Peak 8350 12.1 10.2 119 9.8 11.0 89 ----- ----- Basin Index (%) 116 103 WIND RIVER Burroughs Creek 8750 8.1 -M * 9.5 -M * Castle Creek 8400 3.6 -M * 4.3 -M * Cold Springs 9630 5.5 4.8 115 5.1 6.5 78 Deer Park 9700 8.8 9.5 93 7.5 13.1 57 Hobbs Park 10100 8.9 8.1 110 7.5 8.2 91 Kirwin 9550 8.2 6.1 134 6.9 7.6 91 Little Warm 9370 8.0 6.7 119 6.4 8.6 74 Owl Creek 8975 4.4 3.2 138 4.8 3.7 130 South Pass 9040 8.1 9.8 83 6.8 11.5 59 St. Lawrence Alt 8620 4.0 4.3 93 5.1 5.6 91 Togwotee Pass 9580 18.8 15.6 121 17.8 16.7 107 Townsend Creek 8700 6.6 5.6 118 6.4 7.5 85 ----- ----- Basin Index (%) 110 83 BIGHORN BASIN Bald Mtn. 9380 15.6 11.5 136 12.2 11.2 109 Bear Trap Meadow 8200 -M 3.6 * 7.0 5.3 132 Bone Springs Div 9350 12.5 10.1 124 10.3 10.1 102 Grave Springs 8550 7.9 5.2 152 8.8 6.8 129 Kirwin 9550 8.2 6.1 134 6.9 7.6 91 Marquette 8760 4.9 -M * 6.2 -M * Middle Powder 7760 9.2 6.7 137 9.5 7.7 123 Owl Creek 8975 4.4 3.2 138 4.8 3.7 130 Powder River Pass 9480 9.3 6.9 135 9.1 8.2 111 Shell Creek 9580 10.7 9.6 111 10.4 9.3 112 Timber Creek 7950 4.6 3.1 148 5.2 4.7 111 ----- ----- Basin Index (%) 132 113 SHOSHONE RIVER Blackwater 9780 15.6 15.1 103 15.4 13.9 111 Evening Star 9200 19.3 16.7 116 21.1 19.0 111 Marquette 8760 4.9 -M * 6.2 -M * Sylvan Lake 8420 14.9 13.5 110 16.7 15.6 107 Sylvan Road 7120 9.1 8.1 112 12.9 12.4 104 Younts Peak 8350 12.1 10.2 119 9.8 11.0 89 ----- ----- Basin Index (%) 112 106 POWDER RIVER Bear Trap Meadow 8200 -M 3.6 * 7.0 5.3 132 Cloud Peak Reservoir 9860 9.6 8.9 108 8.9 8.3 107 Grave Springs 8550 7.9 5.2 152 8.8 6.8 129 Hansen Sawmill 8360 5.2 4.1 127 6.3 5.3 119 Middle Powder 7760 9.2 6.7 137 9.5 7.7 123 Powder River Pass 9480 9.3 6.9 135 9.1 8.2 111 Soldier Park 8720 3.6 -M * 6.2 -M * ----- ----- Basin Index (%) 130 119 TONGUE RIVER Big Goose 7990 6.0 5.2 115 7.1 6.8 104 Bone Springs Div 9350 12.5 10.1 124 10.3 10.1 102 Burgess Junction 7880 7.7 7.1 108 8.8 7.8 113 Dome Lake 8880 8.5 7.3 116 6.7 8.7 77 Little Goose 8870 7.1 -M * 5.8 -M * Sucker Creek 8880 9.7 7.5 129 8.4 9.1 92 Tie Creek 6870 5.9 3.6 164 9.4 7.4 127 ----- ----- Basin Index (%) 123 102 BELLE FOURCHE Blind Park 6890 5.9 5.3 111 6.3 8.1 78 Cole Canyon 5910 2.6 3.8 68 -M 6.1 * ----- ----- Basin Index (%) 93 78 CHEYENNE RIVER BASIN Blind Park 6890 5.9 5.3 111 6.3 8.1 78 North Rapid Creek 6130 5.5 4.8 115 6.5 6.6 98 ----- ----- Basin Index (%) 113 87 UPPER N. PLATTE Arapaho Ridge 10960 16.1 14.0 115 15.8 15.1 105 Blackhall Mtn 9820 20.7 -M * 20.6 -M * Columbine 9160 22.5 15.8 142 20.8 17.3 120 Divide Peak 8880 15.8 13.4 118 16.7 14.5 115 Joe Wright 10120 14.2 13.4 106 18.8 16.8 112 Laprele Creek 8375 8.8 5.8 152 8.9 7.9 113 Med Bow 10500 31.8 -M * 26.1 -M * Never Summer 10280 14.2 13.2 108 10.4 -M * North French Creek 10130 24.9 17.1 146 24.0 17.7 136 Old Battle 10000 23.0 20.6 112 20.7 23.7 87 Rawah 9020 9.6 6.8 141 11.0 9.5 116 Sage Creek Basin 7850 12.2 9.0 136 10.0 10.4 96 Sand Lake 10050 21.2 17.4 122 19.7 15.9 124 South Brush Creek 8440 10.0 7.6 132 10.2 10.0 102 Tower 10500 32.6 29.9 109 29.1 26.9 108 Webber Springs 9250 15.9 15.2 105 17.3 17.9 97 Whiskey Park 8950 24.3 17.2 141 23.8 18.9 126 Willow Creek Pass 9540 9.5 8.1 117 8.9 8.7 102 Zirkel 9340 20.8 19.5 107 23.3 20.2 115 ----- ----- Basin Index (%) 121 111 SWEETWATER Deer Park 9700 8.8 9.5 93 7.5 13.1 57 Larsen Creek 9000 -M 7.9 * 5.3 -M * South Pass 9040 8.1 9.8 83 6.8 11.5 59 ----- ----- Basin Index (%) 88 58 LOWER N. PLATTE Casper Mtn. 7900 11.9 8.1 147 7.9 9.5 83 Laprele Creek 8375 8.8 5.8 152 8.9 7.9 113 Reno Hill 8400 11.7 8.2 143 11.8 9.4 126 Windy Peak 7900 7.0 4.4 159 5.9 6.6 89 ----- ----- Basin Index (%) 149 103 LARAMIE RIVER Brooklyn Lake 10240 19.7 12.6 156 19.1 13.6 140 Cinnabar Park 9574 17.7 13.9 127 19.3 16.9 114 Crow Creek 8330 6.6 5.8 114 8.4 6.7 125 Deadman Hill 10220 13.2 10.7 123 11.5 10.8 106 Rawah 9020 9.6 6.8 141 11.0 9.5 116 Roach 9700 10.5 10.6 99 10.2 12.5 82 Windy Peak 7900 7.0 4.4 159 5.9 6.6 89 ----- ----- Basin Index (%) 130 111 S. PLATTE Black Mountain 8920 7.9 -M * 9.5 -M * Crow Creek 8330 6.6 5.8 114 8.4 6.7 125 Deadman Hill 10220 13.2 10.7 123 11.5 10.8 106 ----- ----- Basin Index (%) 120 114 LITTLE SNAKE RIVER Battle Mountain 7440 11.3 7.6 149 11.3 10.2 111 Divide Peak 8880 15.8 13.4 118 16.7 14.5 115 Elk River 8700 15.9 12.4 128 13.1 13.5 97 Little Snake River 8915 20.6 16.8 123 24.9 21.9 114 Old Battle 10000 23.0 20.6 112 20.7 23.7 87 Sage Creek Basin 7850 12.2 9.0 136 10.0 10.4 96 Sandstone RS 8150 13.1 8.8 149 12.1 12.7 95 Whiskey Park 8950 24.3 17.2 141 23.8 18.9 126 ----- ----- Basin Index (%) 129 105 UPPER GREEN RIVER Big Sandy Opening 9080 6.8 8.6 79 5.7 8.8 65 Blind Bull Sum 8650 18.8 15.0 125 11.3 13.6 83 East Rim Divide 7930 9.1 7.0 130 7.3 8.1 90 Elkhart Park G.S. 9400 7.9 7.9 100 7.5 8.9 84 Gros Ventre Summit 8750 8.3 8.7 95 8.0 8.6 93 Gunsight Pass 9820 9.4 8.7 108 9.4 9.5 99 Indian Creek 9425 17.0 15.4 110 12.2 14.9 82 Kendall R.S. 7740 7.7 8.2 94 7.7 9.8 79 Loomis Park 8240 10.7 10.1 106 13.0 11.9 109 New Fork Lake 8340 8.1 7.0 116 6.1 7.5 81 Pocket Creek 9360 -M -M * 5.5 -M * Snider Basin 8060 10.5 8.3 127 10.9 9.8 111 Spring Creek Divide 9000 19.8 15.6 127 19.0 16.3 117 Triple Peak 8500 20.1 14.2 142 19.9 16.9 118 ----- ----- Basin Index (%) 114 95 LOWER GREEN RIVER Blacks Fork Jct 8869 5.9 -M * 9.0 -M * Buck Pasture 9632 13.8 -M * 13.5 -M * EF Blacks Fork GS 9360 11.3 -M * 7.6 -M * Hams Fork 7840 9.8 7.7 127 8.7 7.7 113 Hewinta 9500 8.2 6.3 130 10.8 9.1 119 Hickerson Park 9122 8.1 4.2 193 8.6 6.5 132 Hole-in-Rock 9168 8.1 4.3 188 8.1 6.0 135 Indian Creek 9425 17.0 15.4 110 12.2 14.9 82 Kelley R.S. 8180 11.8 9.5 124 12.4 12.2 102 Spirit Lk 10235 12.7 -M * 13.4 -M * Steel Creek Park 10158 11.4 9.4 121 13.6 10.5 130 ----- ----- Basin Index (%) 131 111 UPPER BEAR RIVER Bear River RS 8777 6.8 -M * 8.0 -M * Bug Lake 7987 15.2 12.1 126 13.9 13.1 106 Burts Miller Ranch 8000 5.3 -M * 5.2 -M * Chalk Creek #1 9171 14.9 14.3 104 13.7 16.6 83 Hayden Fork 9130 12.1 9.3 130 15.2 13.9 109 Kelley R.S. 8180 11.8 9.5 124 12.4 12.2 102 Lily Lake 9133 8.6 7.8 110 9.0 11.3 80 Monte Cristo 8932 21.1 17.0 124 18.8 17.3 109 Salt River Summit 7640 11.2 8.4 133 11.6 11.3 103 Spring Creek Divide 9000 19.8 15.6 127 19.0 16.3 117 ----- ----- Basin Index (%) 122 101 ----------------------------------------------------------------------------- -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.