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 6 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 11.1 11.0 101 11.5 14.4 80 Black Bear 8170 23.1 24.0 96 22.0 25.6 86 Blind Bull Sum 8650 16.4 14.6 112 10.2 13.3 77 Cottonwood Creek 7670 16.9 13.6 124 17.9 16.4 109 East Rim Divide 7930 8.0 6.9 116 6.7 7.9 85 Grand Targhee 9260 27.9 24.3 115 19.3 21.5 90 Granite Creek 6770 11.1 11.1 100 10.7 14.0 76 Grassy Lake 7265 21.5 21.2 101 21.7 24.7 88 Gros Ventre Summit 8750 6.9 8.6 80 6.8 8.5 80 Gunsight Pass 9820 8.2 8.6 95 8.4 9.2 91 Lewis Lake Divide 7850 17.4 20.6 84 20.6 23.8 87 Phillips Bench 8200 18.0 16.2 111 17.6 18.7 94 Salt River Summit 7640 9.6 8.2 117 10.0 11.0 91 Snake River Station 6920 11.6 11.5 101 13.6 15.9 86 Spring Creek Divide 9000 15.8 15.2 104 15.2 15.9 96 Thumb Divide 7980 9.5 9.7 98 9.8 12.5 78 Togwotee Pass 9580 16.7 15.4 108 15.7 16.3 96 Two Ocean Plateau 9240 18.7 18.4 102 14.7 17.8 83 Willow Creek 8080 21.2 18.0 118 21.8 22.3 98 Younts Peak 8350 10.8 10.0 108 9.2 10.8 85 ----- ----- Basin Index (%) 105 88 MADISON-GALLATIN Black Bear 8170 23.1 24.0 96 22.0 25.6 86 Canyon 7870 9.0 8.5 106 9.3 11.1 84 Madison Plateau 7750 14.6 14.4 101 12.6 17.8 71 West Yellowstone 6700 7.7 7.1 108 6.7 10.0 67 Whiskey Creek 6800 10.3 9.8 105 11.9 13.6 88 ----- ----- Basin Index (%) 101 80 YELLOWSTONE Beartooth Lake 9360 14.8 14.4 103 13.5 13.3 102 Burnt Mtn 5880 3.4 2.6 131 8.4 8.2 102 Canyon 7870 9.0 8.5 106 9.3 11.1 84 Cole Creek 7850 10.4 8.7 120 8.2 7.9 104 Evening Star 9200 18.2 16.7 109 20.0 18.5 108 Fisher Creek 9100 20.6 21.4 96 21.2 21.4 99 Northeast Entrance 7350 7.2 6.6 109 8.3 8.6 97 Parker Peak 9400 16.8 13.4 125 15.3 11.7 131 Sylvan Lake 8420 13.6 13.4 101 15.2 15.3 99 Thumb Divide 7980 9.5 9.7 98 9.8 12.5 78 Two Ocean Plateau 9240 18.7 18.4 102 14.7 17.8 83 White Mill 8700 16.9 15.1 112 13.8 15.9 87 Wolverine 7650 9.2 7.2 128 9.1 8.4 108 Younts Peak 8350 10.8 10.0 108 9.2 10.8 85 ----- ----- Basin Index (%) 108 97 WIND RIVER Burroughs Creek 8750 7.8 -M * 9.2 -M * Castle Creek 8400 3.5 -M * 4.1 -M * Cold Springs 9630 5.3 4.8 110 5.0 6.4 78 Deer Park 9700 8.5 9.5 89 7.4 12.7 58 Hobbs Park 10100 8.6 8.0 108 7.4 8.0 92 Kirwin 9550 7.7 6.0 128 6.3 7.4 85 Little Warm 9370 7.4 6.6 112 6.2 8.4 74 Owl Creek 8975 3.9 3.1 126 4.4 3.7 119 South Pass 9040 7.5 9.7 77 6.7 11.3 59 St. Lawrence Alt 8620 4.0 4.2 95 4.9 5.5 89 Togwotee Pass 9580 16.7 15.4 108 15.7 16.3 96 Townsend Creek 8700 6.1 5.5 111 6.1 7.3 84 ----- ----- Basin Index (%) 104 81 BIGHORN BASIN Bald Mtn. 9380 14.0 11.1 126 10.8 11.1 97 Bear Trap Meadow 8200 6.2 3.6 172 6.7 5.3 126 Bone Springs Div 9350 11.5 9.9 116 9.7 9.9 98 Grave Springs 8550 7.0 5.0 140 -M 6.7 * Kirwin 9550 7.7 6.0 128 6.3 7.4 85 Marquette 8760 4.7 -M * 5.9 -M * Middle Powder 7760 7.8 6.6 118 8.5 7.6 112 Owl Creek 8975 3.9 3.1 126 4.4 3.7 119 Powder River Pass 9480 8.7 6.8 128 8.5 8.1 105 Shell Creek 9580 10.2 9.3 110 10.0 9.2 109 Timber Creek 7950 4.2 3.1 135 4.7 4.6 102 ----- ----- Basin Index (%) 126 104 SHOSHONE RIVER Blackwater 9780 14.4 15.0 96 14.4 13.6 106 Evening Star 9200 18.2 16.7 109 20.0 18.5 108 Marquette 8760 4.7 -M * 5.9 -M * Sylvan Lake 8420 13.6 13.4 101 15.2 15.3 99 Sylvan Road 7120 8.2 7.9 104 11.8 12.2 97 Younts Peak 8350 10.8 10.0 108 9.2 10.8 85 ----- ----- Basin Index (%) 103 100 POWDER RIVER Bear Trap Meadow 8200 6.2 3.6 172 6.7 5.3 126 Cloud Peak Reservoir 9860 8.8 8.6 102 8.3 8.2 101 Grave Springs 8550 7.0 5.0 140 -M 6.7 * Hansen Sawmill 8360 4.9 4.0 122 6.0 5.2 115 Middle Powder 7760 7.8 6.6 118 8.5 7.6 112 Powder River Pass 9480 8.7 6.8 128 8.5 8.1 105 Soldier Park 8720 3.2 -M * 5.9 -M * ----- ----- Basin Index (%) 125 110 TONGUE RIVER Big Goose 7990 5.4 5.0 108 6.8 6.7 101 Bone Springs Div 9350 11.5 9.9 116 9.7 9.9 98 Burgess Junction 7880 6.6 6.9 96 7.7 7.7 100 Dome Lake 8880 7.8 7.1 110 6.4 8.6 74 Little Goose 8870 6.5 -M * 5.4 -M * Sucker Creek 8880 8.5 7.4 115 7.3 9.0 81 Tie Creek 6870 4.8 3.5 137 8.1 7.3 111 ----- ----- Basin Index (%) 112 93 BELLE FOURCHE Blind Park 6890 5.4 5.0 108 6.3 8.0 79 Cole Canyon 5910 2.5 3.5 71 -M 5.9 * ----- ----- Basin Index (%) 93 79 CHEYENNE RIVER BASIN Blind Park 6890 5.4 5.0 108 6.3 8.0 79 North Rapid Creek 6130 4.8 4.5 107 6.4 6.5 98 ----- ----- Basin Index (%) 107 88 UPPER N. PLATTE Arapaho Ridge 10960 13.9 13.7 101 13.5 14.7 92 Blackhall Mtn 9820 19.1 -M * 18.9 -M * Columbine 9160 18.0 15.3 118 -M 16.9 * Divide Peak 8880 14.6 13.0 112 15.5 14.2 109 Joe Wright 10120 11.2 13.3 84 15.9 16.6 96 Laprele Creek 8375 8.2 5.6 146 8.4 7.8 108 Med Bow 10500 28.7 -M * 23.8 -M * Never Summer 10280 12.0 13.0 92 8.5 -M * North French Creek 10130 21.7 16.6 131 21.1 17.4 121 Old Battle 10000 21.1 19.9 106 19.2 23.2 83 Rawah 9020 8.0 6.6 121 9.5 9.4 101 Sage Creek Basin 7850 11.6 8.8 132 9.3 10.1 92 Sand Lake 10050 -M 17.1 * -M 15.6 * South Brush Creek 8440 8.6 7.6 113 8.8 9.8 90 Tower 10500 28.3 28.8 98 25.3 26.4 96 Webber Springs 9250 14.5 14.8 98 15.9 17.6 90 Whiskey Park 8950 21.9 16.9 130 21.4 18.5 116 Willow Creek Pass 9540 7.8 8.0 98 7.0 8.6 81 Zirkel 9340 18.4 19.2 96 20.9 19.7 106 ----- ----- Basin Index (%) 108 99 SWEETWATER Deer Park 9700 8.5 9.5 89 7.4 12.7 58 Larsen Creek 9000 -M 7.7 * 5.1 -M * South Pass 9040 7.5 9.7 77 6.7 11.3 59 ----- ----- Basin Index (%) 83 59 LOWER N. PLATTE Casper Mtn. 7900 11.3 7.9 143 7.4 9.4 79 Laprele Creek 8375 8.2 5.6 146 8.4 7.8 108 Reno Hill 8400 10.6 8.0 132 10.8 9.3 116 Windy Peak 7900 6.5 4.3 151 5.5 6.5 85 ----- ----- Basin Index (%) 142 97 LARAMIE RIVER Brooklyn Lake 10240 17.5 12.2 143 17.0 13.3 128 Cinnabar Park 9574 15.7 13.7 115 17.3 16.7 104 Crow Creek 8330 5.9 5.7 104 7.6 6.5 117 Deadman Hill 10220 12.0 10.5 114 10.3 10.6 97 Rawah 9020 8.0 6.6 121 9.5 9.4 101 Roach 9700 9.5 10.4 91 9.3 12.2 76 Windy Peak 7900 6.5 4.3 151 5.5 6.5 85 ----- ----- Basin Index (%) 118 102 S. PLATTE Black Mountain 8920 6.8 -M * 8.4 -M * Crow Creek 8330 5.9 5.7 104 7.6 6.5 117 Deadman Hill 10220 12.0 10.5 114 10.3 10.6 97 ----- ----- Basin Index (%) 110 105 LITTLE SNAKE RIVER Battle Mountain 7440 10.3 7.3 141 10.4 10.0 104 Divide Peak 8880 14.6 13.0 112 15.5 14.2 109 Elk River 8700 13.8 12.0 115 11.1 13.2 84 Little Snake River 8915 18.5 16.3 113 22.8 21.5 106 Old Battle 10000 21.1 19.9 106 19.2 23.2 83 Sage Creek Basin 7850 11.6 8.8 132 9.3 10.1 92 Sandstone RS 8150 11.8 8.4 140 11.1 12.4 90 Whiskey Park 8950 21.9 16.9 130 21.4 18.5 116 ----- ----- Basin Index (%) 120 98 UPPER GREEN RIVER Big Sandy Opening 9080 6.4 8.5 75 5.5 8.6 64 Blind Bull Sum 8650 16.4 14.6 112 10.2 13.3 77 East Rim Divide 7930 8.0 6.9 116 6.7 7.9 85 Elkhart Park G.S. 9400 7.1 7.8 91 7.0 8.8 80 Gros Ventre Summit 8750 6.9 8.6 80 6.8 8.5 80 Gunsight Pass 9820 8.2 8.6 95 8.4 9.2 91 Indian Creek 9425 14.5 15.0 97 10.9 14.5 75 Kendall R.S. 7740 7.2 7.9 91 7.1 9.5 75 Loomis Park 8240 9.4 9.9 95 12.1 11.6 104 New Fork Lake 8340 7.4 6.8 109 -M 7.3 * Pocket Creek 9360 -M -M * 5.2 -M * Snider Basin 8060 8.5 8.0 106 9.1 9.5 96 Spring Creek Divide 9000 15.8 15.2 104 15.2 15.9 96 Triple Peak 8500 16.4 13.6 121 16.2 16.6 98 ----- ----- Basin Index (%) 101 86 LOWER GREEN RIVER Blacks Fork Jct 8869 5.6 -M * 8.6 -M * Buck Pasture 9632 12.4 -M * 12.3 -M * EF Blacks Fork GS 9360 10.4 -M * 6.8 -M * Hams Fork 7840 7.8 7.5 104 7.6 7.5 101 Hewinta 9500 7.8 6.1 128 10.3 9.0 114 Hickerson Park 9122 8.0 4.0 200 8.5 6.3 135 Hole-in-Rock 9168 7.9 4.1 193 8.0 5.9 136 Indian Creek 9425 14.5 15.0 97 10.9 14.5 75 Kelley R.S. 8180 10.5 9.4 112 11.0 11.9 92 Spirit Lk 10235 12.5 -M * 13.2 -M * Steel Creek Park 10158 -M 9.1 * 12.7 10.3 123 ----- ----- Basin Index (%) 123 106 UPPER BEAR RIVER Bear River RS 8777 6.6 -M * 7.8 -M * Bug Lake 7987 13.8 11.7 118 12.8 12.8 100 Burts Miller Ranch 8000 5.4 -M * 5.2 -M * Chalk Creek #1 9171 13.5 13.6 99 12.7 16.2 78 Hayden Fork 9130 11.2 9.0 124 14.2 13.6 104 Kelley R.S. 8180 10.5 9.4 112 11.0 11.9 92 Lily Lake 9133 7.4 7.6 97 8.8 11.0 80 Monte Cristo 8932 19.1 16.3 117 17.2 16.8 102 Salt River Summit 7640 9.6 8.2 117 10.0 11.0 91 Spring Creek Divide 9000 15.8 15.2 104 15.2 15.9 96 ----- ----- Basin Index (%) 111 93 ----------------------------------------------------------------------------- -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.