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: JANUARY 12 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 8.1 8.9 91 8.4 11.8 71 Black Bear 8170 14.9 20.0 74 14.9 20.8 72 Blind Bull Sum 8650 11.7 11.6 101 7.3 10.9 67 Cottonwood Creek 7670 12.7 9.6 132 13.0 13.3 98 East Rim Divide 7930 5.7 5.3 108 4.8 6.5 74 Grand Targhee 9260 22.8 20.8 110 14.4 17.7 81 Granite Creek 6770 7.5 7.9 95 7.8 11.3 69 Grassy Lake 7265 14.1 15.7 90 22.3 19.9 112 Gros Ventre Summit 8750 5.2 7.2 72 5.1 7.0 73 Gunsight Pass 9820 6.5 7.1 92 6.7 7.6 88 Lewis Lake Divide 7850 11.6 15.7 74 14.4 19.5 74 Phillips Bench 8200 13.5 13.6 99 13.4 15.3 88 Salt River Summit 7640 6.4 5.8 110 7.2 8.9 81 Snake River Station 6920 8.4 8.3 101 10.3 12.9 80 Spring Creek Divide 9000 11.4 11.2 102 11.2 13.0 86 Thumb Divide 7980 6.3 7.6 83 7.1 10.3 69 Togwotee Pass 9580 13.5 12.6 107 12.7 13.5 94 Two Ocean Plateau 9240 14.0 15.0 93 11.0 14.8 74 Willow Creek 8080 13.7 13.2 104 15.6 18.2 86 Younts Peak 8350 8.6 7.9 109 5.2 9.0 58 ----- ----- Basin Index (%) 96 81 MADISON-GALLATIN Black Bear 8170 14.9 20.0 74 14.9 20.8 72 Canyon 7870 6.6 6.8 97 6.9 9.0 77 Madison Plateau 7750 9.8 11.5 85 9.0 14.6 62 West Yellowstone 6700 5.3 5.9 90 4.0 8.2 49 Whiskey Creek 6800 7.1 8.1 88 8.4 11.3 74 ----- ----- Basin Index (%) 84 68 YELLOWSTONE Beartooth Lake 9360 11.9 11.7 102 10.9 10.7 102 Burnt Mtn 5880 1.8 2.0 90 6.5 7.2 90 Canyon 7870 6.6 6.8 97 6.9 9.0 77 Cole Creek 7850 7.1 6.8 104 6.1 6.8 90 Evening Star 9200 14.4 13.5 107 15.8 15.3 103 Fisher Creek 9100 16.1 17.3 93 16.8 17.5 96 Northeast Entrance 7350 5.7 5.0 114 6.8 7.0 97 Parker Peak 9400 12.9 11.2 115 12.0 9.7 124 Sylvan Lake 8420 10.5 10.9 96 11.9 12.7 94 Thumb Divide 7980 6.3 7.6 83 7.1 10.3 69 Two Ocean Plateau 9240 14.0 15.0 93 11.0 14.8 74 White Mill 8700 13.6 12.0 113 10.6 13.1 81 Wolverine 7650 7.7 5.6 138 7.7 7.1 108 Younts Peak 8350 8.6 7.9 109 5.2 9.0 58 ----- ----- Basin Index (%) 103 90 WIND RIVER Burroughs Creek 8750 6.2 -M * 7.2 -M * Castle Creek 8400 3.0 -M * 3.6 -M * Cold Springs 9630 3.9 3.7 105 3.6 5.5 65 Deer Park 9700 6.1 7.1 86 5.2 10.7 49 Hobbs Park 10100 6.0 7.2 83 5.4 6.8 79 Kirwin 9550 6.7 5.0 134 5.3 6.4 83 Little Warm 9370 6.4 5.3 121 4.1 7.0 59 Owl Creek 8975 2.8 2.8 100 3.4 3.1 110 South Pass 9040 5.1 7.3 70 3.8 9.5 40 St. Lawrence Alt 8620 2.7 3.4 79 3.6 4.7 77 Togwotee Pass 9580 13.5 12.6 107 12.7 13.5 94 Townsend Creek 8700 4.6 4.2 110 4.6 6.3 73 ----- ----- Basin Index (%) 99 70 BIGHORN BASIN Bald Mtn. 9380 11.6 9.6 121 8.2 9.1 90 Bear Trap Meadow 8200 5.2 2.8 186 5.9 4.6 128 Bone Springs Div 9350 9.5 8.2 116 7.0 8.1 86 Grave Springs 8550 5.6 4.1 137 6.6 5.7 116 Kirwin 9550 6.7 5.0 134 5.3 6.4 83 Marquette 8760 4.0 -M * 5.1 -M * Middle Powder 7760 6.4 5.7 112 7.3 6.5 112 Owl Creek 8975 2.8 2.8 100 3.4 3.1 110 Powder River Pass 9480 7.3 5.6 130 7.3 6.7 109 Shell Creek 9580 -M 7.8 * -M 7.4 * Timber Creek 7950 3.6 2.3 157 4.1 4.1 100 ----- ----- Basin Index (%) 127 101 SHOSHONE RIVER Blackwater 9780 11.9 12.4 96 11.5 11.3 102 Evening Star 9200 14.4 13.5 107 15.8 15.3 103 Marquette 8760 4.0 -M * 5.1 -M * Sylvan Lake 8420 10.5 10.9 96 11.9 12.7 94 Sylvan Road 7120 6.4 6.2 103 10.0 10.3 97 Younts Peak 8350 8.6 7.9 109 5.2 9.0 58 ----- ----- Basin Index (%) 102 93 POWDER RIVER Bear Trap Meadow 8200 5.2 2.8 186 5.9 4.6 128 Cloud Peak Reservoir 9860 6.7 6.9 97 6.7 6.9 97 Grave Springs 8550 5.6 4.1 137 6.6 5.7 116 Hansen Sawmill 8360 3.6 3.4 106 4.6 4.4 105 Middle Powder 7760 6.4 5.7 112 7.3 6.5 112 Powder River Pass 9480 7.3 5.6 130 7.3 6.7 109 Soldier Park 8720 2.3 -M * 4.6 -M * ----- ----- Basin Index (%) 122 110 TONGUE RIVER Big Goose 7990 4.1 4.1 100 5.5 5.7 96 Bone Springs Div 9350 9.5 8.2 116 7.0 8.1 86 Burgess Junction 7880 5.4 5.3 102 -M 6.5 * Dome Lake 8880 5.3 5.8 91 3.8 7.3 52 Little Goose 8870 4.9 -M * 4.4 -M * Sucker Creek 8880 6.8 6.0 113 5.5 7.4 74 Tie Creek 6870 3.4 2.4 142 6.6 6.2 106 ----- ----- Basin Index (%) 108 82 BELLE FOURCHE Blind Park 6890 4.1 3.9 105 5.1 6.6 77 Cole Canyon 5910 3.0 2.5 120 -M 5.1 * ----- ----- Basin Index (%) 111 77 CHEYENNE RIVER BASIN Blind Park 6890 4.1 3.9 105 5.1 6.6 77 North Rapid Creek 6130 3.7 3.5 106 5.2 5.6 93 ----- ----- Basin Index (%) 105 84 UPPER N. PLATTE Arapaho Ridge 10960 11.9 10.9 109 11.5 12.5 92 Blackhall Mtn 9820 15.4 -M * 15.7 -M * Columbine 9160 14.1 11.6 122 12.6 13.6 93 Divide Peak 8880 11.4 9.9 115 12.5 11.6 108 Joe Wright 10120 8.5 10.7 79 12.5 13.7 91 Laprele Creek 8375 6.9 4.6 150 7.3 6.5 112 Med Bow 10500 22.4 -M * 19.1 -M * Never Summer 10280 9.3 10.3 90 6.6 -M * North French Creek 10130 16.1 13.4 120 16.2 14.1 115 Old Battle 10000 16.8 15.1 111 15.6 18.9 83 Rawah 9020 6.6 5.2 127 7.9 8.3 95 Sage Creek Basin 7850 8.4 6.9 122 7.2 8.6 84 Sand Lake 10050 14.9 13.9 107 14.0 12.8 109 South Brush Creek 8440 6.2 5.8 107 6.8 8.1 84 Tower 10500 22.1 21.2 104 20.7 21.4 97 Webber Springs 9250 12.0 11.5 104 13.1 14.3 92 Whiskey Park 8950 17.2 11.8 146 17.7 14.4 123 Willow Creek Pass 9540 6.1 6.1 100 5.6 7.2 78 Zirkel 9340 14.8 14.5 102 16.9 16.3 104 ----- ----- Basin Index (%) 111 98 SWEETWATER Deer Park 9700 6.1 7.1 86 5.2 10.7 49 Larsen Creek 9000 2.2 5.8 38 4.2 -M * South Pass 9040 5.1 7.3 70 3.8 9.5 40 ----- ----- Basin Index (%) 66 45 LOWER N. PLATTE Casper Mtn. 7900 8.7 6.7 130 6.1 8.0 76 Laprele Creek 8375 6.9 4.6 150 7.3 6.5 112 Reno Hill 8400 8.9 6.5 137 9.3 7.8 119 Windy Peak 7900 5.6 3.4 165 4.9 5.6 88 ----- ----- Basin Index (%) 142 99 LARAMIE RIVER Brooklyn Lake 10240 14.1 10.1 140 13.9 10.6 131 Cinnabar Park 9574 12.9 11.3 114 14.4 13.8 104 Crow Creek 8330 4.9 4.9 100 6.6 5.9 112 Deadman Hill 10220 9.7 7.9 123 8.4 8.8 95 Rawah 9020 6.6 5.2 127 7.9 8.3 95 Roach 9700 8.2 8.2 100 7.8 10.1 77 Windy Peak 7900 5.6 3.4 165 4.9 5.6 88 ----- ----- Basin Index (%) 122 101 S. PLATTE Black Mountain 8920 5.9 -M * 7.1 -M * Crow Creek 8330 4.9 4.9 100 6.6 5.9 112 Deadman Hill 10220 9.7 7.9 123 8.4 8.8 95 ----- ----- Basin Index (%) 114 102 LITTLE SNAKE RIVER Battle Mountain 7440 8.0 5.1 157 8.0 8.2 98 Divide Peak 8880 11.4 9.9 115 12.5 11.6 108 Elk River 8700 11.1 8.6 129 8.6 10.6 81 Little Snake River 8915 14.7 11.7 126 18.6 17.5 106 Old Battle 10000 16.8 15.1 111 15.6 18.9 83 Sage Creek Basin 7850 8.4 6.9 122 7.2 8.6 84 Sandstone RS 8150 9.4 6.1 154 8.8 10.0 88 Whiskey Park 8950 17.2 11.8 146 17.7 14.4 123 ----- ----- Basin Index (%) 129 97 UPPER GREEN RIVER Big Sandy Opening 9080 5.0 6.9 72 4.3 7.2 60 Blind Bull Sum 8650 11.7 11.6 101 7.3 10.9 67 East Rim Divide 7930 5.7 5.3 108 4.8 6.5 74 Elkhart Park G.S. 9400 5.1 6.1 84 5.2 7.3 71 Gros Ventre Summit 8750 5.2 7.2 72 5.1 7.0 73 Gunsight Pass 9820 6.5 7.1 92 6.7 7.6 88 Indian Creek 9425 10.0 11.6 86 7.9 11.8 67 Kendall R.S. 7740 5.2 6.1 85 5.3 7.8 68 Loomis Park 8240 7.0 7.3 96 9.3 9.5 98 New Fork Lake 8340 5.7 5.3 108 -M 6.0 * Pocket Creek 9360 -M -M * 3.6 -M * Snider Basin 8060 6.3 6.1 103 6.8 7.8 87 Spring Creek Divide 9000 11.4 11.2 102 11.2 13.0 86 Triple Peak 8500 12.7 10.6 120 12.7 13.3 95 ----- ----- Basin Index (%) 95 79 LOWER GREEN RIVER Blacks Fork Jct 8869 4.2 -M * 6.9 -M * Buck Pasture 9632 9.8 -M * 9.8 -M * EF Blacks Fork GS 9360 8.3 -M * 5.9 -M * Hams Fork 7840 5.5 5.4 102 5.7 6.1 93 Hewinta 9500 6.1 4.7 130 8.4 7.3 115 Hickerson Park 9122 6.1 3.1 197 6.9 5.4 128 Hole-in-Rock 9168 6.7 3.3 203 6.9 5.1 135 Indian Creek 9425 10.0 11.6 86 7.9 11.8 67 Kelley R.S. 8180 7.6 7.1 107 8.1 9.8 83 Spirit Lk 10235 9.8 -M * 10.6 -M * Steel Creek Park 10158 9.4 7.0 134 10.3 8.5 121 ----- ----- Basin Index (%) 122 100 UPPER BEAR RIVER Bear River RS 8777 4.8 -M * 6.1 -M * Bug Lake 7987 10.4 7.8 133 9.9 10.5 94 Burts Miller Ranch 8000 4.2 -M * 4.3 -M * Chalk Creek #1 9171 10.2 11.2 91 9.6 13.3 72 Hayden Fork 9130 8.3 6.7 124 11.3 11.1 102 Kelley R.S. 8180 7.6 7.1 107 8.1 9.8 83 Lily Lake 9133 5.9 6.1 97 6.9 9.1 76 Monte Cristo 8932 14.6 12.9 113 13.0 13.8 94 Salt River Summit 7640 6.4 5.8 110 7.2 8.9 81 Spring Creek Divide 9000 11.4 11.2 102 11.2 13.0 86 ----- ----- Basin Index (%) 109 86 ----------------------------------------------------------------------------- -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.