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 MONDAY: FEBRUARY 3 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 10.8 10.9 99 11.2 14.3 78 Black Bear 8170 22.5 23.5 96 21.5 25.3 85 Blind Bull Sum 8650 16.0 14.1 113 10.0 13.1 76 Cottonwood Creek 7670 16.3 13.3 123 17.6 16.1 109 East Rim Divide 7930 7.3 6.9 106 6.1 7.8 78 Grand Targhee 9260 27.6 23.8 116 19.2 20.9 92 Granite Creek 6770 10.8 10.8 100 11.2 13.9 81 Grassy Lake 7265 21.3 20.7 103 32.2 24.4 132 Gros Ventre Summit 8750 6.6 8.5 78 6.3 8.4 75 Gunsight Pass 9820 8.0 8.4 95 8.2 9.0 91 Lewis Lake Divide 7850 17.4 20.2 86 20.3 23.6 86 Phillips Bench 8200 17.6 16.0 110 17.2 18.6 92 Salt River Summit 7640 9.1 8.0 114 9.8 10.8 91 Snake River Station 6920 11.4 11.1 103 13.5 15.8 85 Spring Creek Divide 9000 15.4 14.7 105 15.0 15.7 96 Thumb Divide 7980 9.5 9.6 99 9.6 12.4 77 Togwotee Pass 9580 16.2 15.2 107 15.3 16.1 95 Two Ocean Plateau 9240 18.5 18.0 103 14.6 17.6 83 Willow Creek 8080 20.4 17.5 117 21.3 22.0 97 Younts Peak 8350 10.5 9.8 107 8.7 10.7 81 ----- ----- Basin Index (%) 104 91 MADISON-GALLATIN Black Bear 8170 22.5 23.5 96 21.5 25.3 85 Canyon 7870 8.9 8.3 107 9.1 10.9 83 Madison Plateau 7750 14.2 14.1 101 12.8 17.6 73 West Yellowstone 6700 7.6 7.1 107 6.4 9.8 65 Whiskey Creek 6800 10.1 9.7 104 11.6 13.5 86 ----- ----- Basin Index (%) 101 80 YELLOWSTONE Beartooth Lake 9360 14.6 14.1 104 13.3 13.1 102 Burnt Mtn 5880 -M 2.5 * 7.4 8.0 92 Canyon 7870 8.9 8.3 107 9.1 10.9 83 Cole Creek 7850 -M 8.5 * 7.9 7.8 101 Evening Star 9200 18.0 16.6 108 19.6 18.3 107 Fisher Creek 9100 20.2 20.9 97 20.8 21.2 98 Northeast Entrance 7350 7.0 6.5 108 8.1 8.4 96 Parker Peak 9400 16.1 13.3 121 14.8 11.5 129 Sylvan Lake 8420 13.4 13.2 102 14.9 15.1 99 Thumb Divide 7980 9.5 9.6 99 9.6 12.4 77 Two Ocean Plateau 9240 18.5 18.0 103 14.6 17.6 83 White Mill 8700 16.7 14.9 112 13.5 15.7 86 Wolverine 7650 9.1 7.2 126 8.8 8.3 106 Younts Peak 8350 10.5 9.8 107 8.7 10.7 81 ----- ----- Basin Index (%) 107 96 WIND RIVER Burroughs Creek 8750 7.4 -M * 8.8 -M * Castle Creek 8400 3.3 -M * 4.0 -M * Cold Springs 9630 4.5 4.7 96 4.1 6.3 65 Deer Park 9700 7.9 9.4 84 7.1 12.5 57 Hobbs Park 10100 7.8 8.0 98 6.5 7.9 82 Kirwin 9550 7.3 5.9 124 5.9 7.3 81 Little Warm 9370 7.1 6.5 109 5.6 8.3 67 Owl Creek 8975 3.4 3.1 110 3.9 3.6 108 South Pass 9040 7.0 9.3 75 6.3 11.2 56 St. Lawrence Alt 8620 3.1 4.2 74 4.2 5.4 78 Togwotee Pass 9580 16.2 15.2 107 15.3 16.1 95 Townsend Creek 8700 5.3 5.3 100 5.3 7.2 74 ----- ----- Basin Index (%) 97 75 BIGHORN BASIN Bald Mtn. 9380 13.6 10.9 125 10.5 10.9 96 Bear Trap Meadow 8200 5.8 3.5 166 6.2 5.2 119 Bone Springs Div 9350 11.1 9.9 112 9.4 9.7 97 Grave Springs 8550 6.6 4.9 135 6.7 6.6 102 Kirwin 9550 7.3 5.9 124 5.9 7.3 81 Marquette 8760 4.0 -M * 5.5 -M * Middle Powder 7760 7.3 6.4 114 8.1 7.5 108 Owl Creek 8975 3.4 3.1 110 3.9 3.6 108 Powder River Pass 9480 8.3 6.6 126 8.4 8.0 105 Shell Creek 9580 10.1 9.2 110 9.8 9.1 108 Timber Creek 7950 3.7 3.0 123 4.4 4.5 98 ----- ----- Basin Index (%) 122 101 SHOSHONE RIVER Blackwater 9780 14.0 14.9 94 13.9 13.5 103 Evening Star 9200 18.0 16.6 108 19.6 18.3 107 Marquette 8760 4.0 -M * 5.5 -M * Sylvan Lake 8420 13.4 13.2 102 14.9 15.1 99 Sylvan Road 7120 8.1 7.9 103 11.5 12.1 95 Younts Peak 8350 10.5 9.8 107 8.7 10.7 81 ----- ----- Basin Index (%) 103 98 POWDER RIVER Bear Trap Meadow 8200 5.8 3.5 166 6.2 5.2 119 Cloud Peak Reservoir 9860 8.4 8.5 99 7.6 8.0 95 Grave Springs 8550 6.6 4.9 135 6.7 6.6 102 Hansen Sawmill 8360 4.6 4.0 115 5.6 5.1 110 Middle Powder 7760 7.3 6.4 114 8.1 7.5 108 Powder River Pass 9480 8.3 6.6 126 8.4 8.0 105 Soldier Park 8720 2.8 -M * 5.4 -M * ----- ----- Basin Index (%) 121 105 TONGUE RIVER Big Goose 7990 5.2 4.9 106 5.8 6.6 88 Bone Springs Div 9350 11.1 9.9 112 9.4 9.7 97 Burgess Junction 7880 6.4 6.7 96 7.3 7.6 96 Dome Lake 8880 7.5 6.9 109 5.8 8.5 68 Little Goose 8870 6.2 -M * 5.2 -M * Sucker Creek 8880 8.1 7.2 112 6.8 8.8 77 Tie Creek 6870 4.2 3.4 124 7.5 7.2 104 ----- ----- Basin Index (%) 109 88 BELLE FOURCHE Blind Park 6890 5.3 4.8 110 6.0 7.9 76 Cole Canyon 5910 2.6 3.3 79 -M 5.7 * ----- ----- Basin Index (%) 98 76 CHEYENNE RIVER BASIN Blind Park 6890 5.3 4.8 110 6.0 7.9 76 North Rapid Creek 6130 4.7 4.3 109 5.8 6.3 92 ----- ----- Basin Index (%) 110 83 UPPER N. PLATTE Arapaho Ridge 10960 14.0 13.4 104 13.6 14.4 94 Blackhall Mtn 9820 19.0 -M * 18.8 -M * Columbine 9160 18.2 14.9 122 17.1 16.6 103 Divide Peak 8880 14.5 12.5 116 15.4 13.9 111 Joe Wright 10120 10.5 13.1 80 15.1 16.3 93 Laprele Creek 8375 7.8 5.5 142 8.0 7.6 105 Med Bow 10500 28.6 -M * 23.8 -M * Never Summer 10280 11.2 12.8 88 8.1 -M * North French Creek 10130 21.7 16.2 134 21.1 17.1 123 Old Battle 10000 20.9 19.4 108 19.4 22.8 85 Rawah 9020 7.7 6.3 122 9.2 9.1 101 Sage Creek Basin 7850 10.7 8.6 124 9.2 10.0 92 Sand Lake 10050 -M 16.7 * -M 15.4 * South Brush Creek 8440 8.5 7.4 115 8.8 9.7 91 Tower 10500 28.2 28.0 101 25.8 25.8 100 Webber Springs 9250 14.5 14.1 103 16.0 17.3 92 Whiskey Park 8950 21.9 16.4 134 21.5 18.2 118 Willow Creek Pass 9540 7.2 7.8 92 6.8 8.4 81 Zirkel 9340 18.4 18.8 98 20.9 19.3 108 ----- ----- Basin Index (%) 110 101 SWEETWATER Deer Park 9700 7.9 9.4 84 7.1 12.5 57 Larsen Creek 9000 3.7 7.5 49 5.2 -M * South Pass 9040 7.0 9.3 75 6.3 11.2 56 ----- ----- Basin Index (%) 71 57 LOWER N. PLATTE Casper Mtn. 7900 10.1 7.6 133 6.9 9.1 76 Laprele Creek 8375 7.8 5.5 142 8.0 7.6 105 Reno Hill 8400 10.3 7.8 132 10.8 9.0 120 Windy Peak 7900 6.4 4.2 152 5.6 6.4 88 ----- ----- Basin Index (%) 138 98 LARAMIE RIVER Brooklyn Lake 10240 17.2 12.0 143 16.8 13.1 128 Cinnabar Park 9574 15.4 13.4 115 16.9 16.3 104 Crow Creek 8330 5.2 5.7 91 7.2 6.4 112 Deadman Hill 10220 11.5 10.3 112 10.0 10.4 96 Rawah 9020 7.7 6.3 122 9.2 9.1 101 Roach 9700 9.5 10.1 94 9.5 12.0 79 Windy Peak 7900 6.4 4.2 152 5.6 6.4 88 ----- ----- Basin Index (%) 118 102 S. PLATTE Black Mountain 8920 6.6 -M * 7.9 -M * Crow Creek 8330 5.2 5.7 91 7.2 6.4 112 Deadman Hill 10220 11.5 10.3 112 10.0 10.4 96 ----- ----- Basin Index (%) 104 102 LITTLE SNAKE RIVER Battle Mountain 7440 10.2 7.2 142 10.3 9.8 105 Divide Peak 8880 14.5 12.5 116 15.4 13.9 111 Elk River 8700 13.8 11.6 119 11.1 13.0 85 Little Snake River 8915 18.5 15.9 116 22.8 21.1 108 Old Battle 10000 20.9 19.4 108 19.4 22.8 85 Sage Creek Basin 7850 10.7 8.6 124 9.2 10.0 92 Sandstone RS 8150 11.7 8.2 143 10.9 12.2 89 Whiskey Park 8950 21.9 16.4 134 21.5 18.2 118 ----- ----- Basin Index (%) 122 100 UPPER GREEN RIVER Big Sandy Opening 9080 6.3 8.4 75 5.5 8.5 65 Blind Bull Sum 8650 16.0 14.1 113 10.0 13.1 76 East Rim Divide 7930 7.3 6.9 106 6.1 7.8 78 Elkhart Park G.S. 9400 6.8 7.6 89 6.7 8.6 78 Gros Ventre Summit 8750 6.6 8.5 78 6.3 8.4 75 Gunsight Pass 9820 8.0 8.4 95 8.2 9.0 91 Indian Creek 9425 14.1 14.7 96 10.6 14.3 74 Kendall R.S. 7740 6.7 7.8 86 6.7 9.4 71 Loomis Park 8240 9.0 9.7 93 11.9 11.5 103 New Fork Lake 8340 7.0 6.8 103 5.0 7.2 69 Pocket Creek 9360 -M -M * 5.0 -M * Snider Basin 8060 8.2 7.7 106 8.8 9.4 94 Spring Creek Divide 9000 15.4 14.7 105 15.0 15.7 96 Triple Peak 8500 15.9 13.5 118 16.0 16.4 98 ----- ----- Basin Index (%) 99 84 LOWER GREEN RIVER Blacks Fork Jct 8869 5.7 -M * 8.6 -M * Buck Pasture 9632 12.2 -M * 12.1 -M * EF Blacks Fork GS 9360 10.4 -M * 8.4 -M * Hams Fork 7840 7.4 7.3 101 7.3 7.4 99 Hewinta 9500 7.7 5.9 131 10.2 8.8 116 Hickerson Park 9122 7.3 3.9 187 7.8 6.2 126 Hole-in-Rock 9168 7.7 4.1 188 7.8 5.8 134 Indian Creek 9425 14.1 14.7 96 10.6 14.3 74 Kelley R.S. 8180 10.3 9.2 112 10.7 11.8 91 Spirit Lk 10235 11.8 -M * 12.5 -M * Steel Creek Park 10158 11.6 8.8 132 12.4 10.1 123 ----- ----- Basin Index (%) 123 104 UPPER BEAR RIVER Bear River RS 8777 6.3 -M * 7.6 -M * Bug Lake 7987 13.4 11.2 120 12.5 12.6 99 Burts Miller Ranch 8000 5.3 -M * 5.1 -M * Chalk Creek #1 9171 13.1 13.4 98 12.4 16.0 78 Hayden Fork 9130 11.0 8.8 125 14.0 13.4 104 Kelley R.S. 8180 10.3 9.2 112 10.7 11.8 91 Lily Lake 9133 7.2 7.5 96 8.5 10.9 78 Monte Cristo 8932 18.5 16.1 115 16.6 16.6 100 Salt River Summit 7640 9.1 8.0 114 9.8 10.8 91 Spring Creek Divide 9000 15.4 14.7 105 15.0 15.7 96 ----- ----- Basin Index (%) 110 92 ----------------------------------------------------------------------------- -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.