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: JANUARY 16 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 9.0 9.6 94 9.4 12.1 78 Black Bear 8170 17.7 20.7 86 17.1 21.4 80 Blind Bull Sum 8650 13.4 12.2 110 8.4 11.2 75 Cottonwood Creek 7670 13.7 10.4 132 14.1 13.8 102 East Rim Divide 7930 6.2 5.6 111 5.3 6.7 79 Grand Targhee 9260 22.1 21.2 104 -M 18.0 * Granite Creek 6770 8.9 8.6 103 8.9 11.7 76 Grassy Lake 7265 16.3 16.5 99 25.4 20.7 123 Gros Ventre Summit 8750 5.6 7.4 76 5.6 7.2 78 Gunsight Pass 9820 6.9 7.3 95 7.1 7.7 92 Lewis Lake Divide 7850 13.6 16.5 82 16.8 20.1 84 Phillips Bench 8200 15.3 14.7 104 15.2 15.8 96 Salt River Summit 7640 7.7 6.3 122 8.3 9.2 90 Snake River Station 6920 9.4 9.0 104 11.2 13.4 84 Spring Creek Divide 9000 13.1 12.0 109 12.8 13.4 96 Thumb Divide 7980 7.5 7.9 95 8.0 10.7 75 Togwotee Pass 9580 14.3 13.0 110 13.5 13.9 97 Two Ocean Plateau 9240 15.6 15.5 101 12.4 15.3 81 Willow Creek 8080 15.5 14.0 111 17.1 18.8 91 Younts Peak 8350 9.2 8.4 110 5.3 9.2 58 ----- ----- Basin Index (%) 102 88 MADISON-GALLATIN Black Bear 8170 17.7 20.7 86 17.1 21.4 80 Canyon 7870 7.1 7.2 99 7.3 9.3 78 Madison Plateau 7750 11.4 12.2 93 9.8 15.1 65 West Yellowstone 6700 5.9 6.2 95 4.4 8.3 53 Whiskey Creek 6800 8.0 8.3 96 9.2 11.6 79 ----- ----- Basin Index (%) 92 73 YELLOWSTONE Beartooth Lake 9360 12.6 12.4 102 11.6 11.1 105 Burnt Mtn 5880 1.9 2.1 90 6.0 7.4 81 Canyon 7870 7.1 7.2 99 7.3 9.3 78 Cole Creek 7850 7.2 7.2 100 6.2 7.0 89 Evening Star 9200 15.6 14.0 111 16.8 15.7 107 Fisher Creek 9100 17.8 18.2 98 18.0 18.0 100 Northeast Entrance 7350 6.2 5.3 117 7.1 7.3 97 Parker Peak 9400 13.3 11.5 116 12.5 10.0 125 Sylvan Lake 8420 11.4 11.2 102 12.7 13.1 97 Thumb Divide 7980 7.5 7.9 95 8.0 10.7 75 Two Ocean Plateau 9240 15.6 15.5 101 12.4 15.3 81 White Mill 8700 14.6 12.6 116 11.4 13.5 84 Wolverine 7650 7.9 5.9 134 7.8 7.3 107 Younts Peak 8350 9.2 8.4 110 5.3 9.2 58 ----- ----- Basin Index (%) 106 92 WIND RIVER Burroughs Creek 8750 6.6 -M * 7.9 -M * Castle Creek 8400 3.1 -M * 3.7 -M * Cold Springs 9630 4.0 4.0 100 3.7 5.7 65 Deer Park 9700 7.5 7.2 104 6.5 10.8 60 Hobbs Park 10100 7.1 7.3 97 6.1 7.0 87 Kirwin 9550 6.9 5.3 130 5.6 6.6 85 Little Warm 9370 6.7 5.6 120 4.4 7.2 61 Owl Creek 8975 2.9 2.9 100 3.4 3.2 106 South Pass 9040 6.4 7.7 83 4.5 9.7 46 St. Lawrence Alt 8620 2.7 3.5 77 3.8 4.8 79 Togwotee Pass 9580 14.3 13.0 110 13.5 13.9 97 Townsend Creek 8700 4.7 4.4 107 4.7 6.5 72 ----- ----- Basin Index (%) 104 75 BIGHORN BASIN Bald Mtn. 9380 11.8 9.9 119 8.0 9.5 84 Bear Trap Meadow 8200 5.2 2.9 179 5.9 4.6 128 Bone Springs Div 9350 9.8 8.6 114 7.2 8.4 86 Grave Springs 8550 5.7 4.4 130 7.0 5.8 121 Kirwin 9550 6.9 5.3 130 5.6 6.6 85 Marquette 8760 3.9 -M * 5.0 -M * Middle Powder 7760 6.4 6.0 107 7.5 6.7 112 Owl Creek 8975 2.9 2.9 100 3.4 3.2 106 Powder River Pass 9480 7.4 5.8 128 7.4 7.0 106 Shell Creek 9580 -M 8.3 * -M 7.7 * Timber Creek 7950 3.6 2.5 144 4.0 4.2 95 ----- ----- Basin Index (%) 124 100 SHOSHONE RIVER Blackwater 9780 12.8 12.9 99 12.4 11.7 106 Evening Star 9200 15.6 14.0 111 16.8 15.7 107 Marquette 8760 3.9 -M * 5.0 -M * Sylvan Lake 8420 11.4 11.2 102 12.7 13.1 97 Sylvan Road 7120 7.0 6.6 106 9.9 10.6 93 Younts Peak 8350 9.2 8.4 110 5.3 9.2 58 ----- ----- Basin Index (%) 105 95 POWDER RIVER Bear Trap Meadow 8200 5.2 2.9 179 5.9 4.6 128 Cloud Peak Reservoir 9860 6.8 7.2 94 6.9 7.1 97 Grave Springs 8550 5.7 4.4 130 7.0 5.8 121 Hansen Sawmill 8360 3.8 3.5 109 4.8 4.5 107 Middle Powder 7760 6.4 6.0 107 7.5 6.7 112 Powder River Pass 9480 7.4 5.8 128 7.4 7.0 106 Soldier Park 8720 2.2 -M * 4.8 -M * ----- ----- Basin Index (%) 118 111 TONGUE RIVER Big Goose 7990 4.1 4.3 95 5.4 5.9 92 Bone Springs Div 9350 9.8 8.6 114 7.2 8.4 86 Burgess Junction 7880 5.5 5.8 95 -M 6.7 * Dome Lake 8880 5.4 6.1 89 3.9 7.5 52 Little Goose 8870 5.0 -M * 4.4 -M * Sucker Creek 8880 6.9 6.3 110 5.4 7.7 70 Tie Creek 6870 3.3 2.7 122 6.7 6.4 105 ----- ----- Basin Index (%) 104 80 BELLE FOURCHE Blind Park 6890 3.9 4.0 98 5.3 7.0 76 Cole Canyon 5910 2.9 2.7 107 -M 5.1 * ----- ----- Basin Index (%) 101 76 CHEYENNE RIVER BASIN Blind Park 6890 3.9 4.0 98 5.3 7.0 76 North Rapid Creek 6130 3.5 3.7 95 5.5 5.7 96 ----- ----- Basin Index (%) 96 85 UPPER N. PLATTE Arapaho Ridge 10960 12.4 11.2 111 12.1 12.8 95 Blackhall Mtn 9820 16.7 -M * 16.9 -M * Columbine 9160 14.8 12.4 119 -M 14.1 * Divide Peak 8880 12.0 10.4 115 13.1 12.0 109 Joe Wright 10120 8.8 11.2 79 13.1 14.1 93 Laprele Creek 8375 6.9 4.9 141 7.3 6.7 109 Med Bow 10500 23.6 -M * 20.1 -M * Never Summer 10280 9.9 10.5 94 6.9 -M * North French Creek 10130 16.9 13.9 122 16.9 14.6 116 Old Battle 10000 18.1 15.6 116 17.0 19.5 87 Rawah 9020 6.8 5.4 126 8.1 8.4 96 Sage Creek Basin 7850 8.8 7.3 121 7.7 8.7 89 Sand Lake 10050 -M 14.4 * -M 13.2 * South Brush Creek 8440 6.4 6.1 105 6.8 8.5 80 Tower 10500 23.4 22.6 104 21.9 22.1 99 Webber Springs 9250 13.0 11.9 109 14.1 14.8 95 Whiskey Park 8950 18.2 13.2 138 18.6 15.1 123 Willow Creek Pass 9540 6.7 6.2 108 6.0 7.4 81 Zirkel 9340 15.7 15.8 99 18.0 16.6 108 ----- ----- Basin Index (%) 111 100 SWEETWATER Deer Park 9700 7.5 7.2 104 6.5 10.8 60 Larsen Creek 9000 3.1 6.1 51 4.8 -M * South Pass 9040 6.4 7.7 83 4.5 9.7 46 ----- ----- Basin Index (%) 81 54 LOWER N. PLATTE Casper Mtn. 7900 8.7 6.7 130 6.1 8.2 74 Laprele Creek 8375 6.9 4.9 141 7.3 6.7 109 Reno Hill 8400 9.0 6.6 136 9.4 8.0 118 Windy Peak 7900 5.7 3.6 158 4.9 5.8 84 ----- ----- Basin Index (%) 139 97 LARAMIE RIVER Brooklyn Lake 10240 14.8 10.7 138 14.6 11.1 132 Cinnabar Park 9574 13.6 11.7 116 15.1 14.2 106 Crow Creek 8330 4.9 5.0 98 6.6 6.0 110 Deadman Hill 10220 10.2 8.2 124 8.8 9.0 98 Rawah 9020 6.8 5.4 126 8.1 8.4 96 Roach 9700 8.6 8.7 99 8.3 10.4 80 Windy Peak 7900 5.7 3.6 158 4.9 5.8 84 ----- ----- Basin Index (%) 121 102 S. PLATTE Black Mountain 8920 5.9 -M * 7.3 -M * Crow Creek 8330 4.9 5.0 98 6.6 6.0 110 Deadman Hill 10220 10.2 8.2 124 8.8 9.0 98 ----- ----- Basin Index (%) 114 103 LITTLE SNAKE RIVER Battle Mountain 7440 8.2 5.6 146 8.3 8.5 98 Divide Peak 8880 12.0 10.4 115 13.1 12.0 109 Elk River 8700 12.0 9.2 130 9.7 11.1 87 Little Snake River 8915 15.6 12.3 127 19.6 17.8 110 Old Battle 10000 18.1 15.6 116 17.0 19.5 87 Sage Creek Basin 7850 8.8 7.3 121 7.7 8.7 89 Sandstone RS 8150 9.9 6.7 148 9.3 10.4 89 Whiskey Park 8950 18.2 13.2 138 18.6 15.1 123 ----- ----- Basin Index (%) 128 100 UPPER GREEN RIVER Big Sandy Opening 9080 5.7 7.0 81 5.0 7.4 68 Blind Bull Sum 8650 13.4 12.2 110 8.4 11.2 75 East Rim Divide 7930 6.2 5.6 111 5.3 6.7 79 Elkhart Park G.S. 9400 5.7 6.4 89 5.7 7.5 76 Gros Ventre Summit 8750 5.6 7.4 76 5.6 7.2 78 Gunsight Pass 9820 6.9 7.3 95 7.1 7.7 92 Indian Creek 9425 11.6 12.2 95 9.0 12.1 74 Kendall R.S. 7740 5.9 6.5 91 5.9 8.0 74 Loomis Park 8240 8.1 7.8 104 10.4 9.8 106 New Fork Lake 8340 6.2 5.6 111 -M 6.2 * Pocket Creek 9360 -M -M * 4.3 -M * Snider Basin 8060 7.2 6.4 112 7.7 8.0 96 Spring Creek Divide 9000 13.1 12.0 109 12.8 13.4 96 Triple Peak 8500 14.0 11.4 123 13.7 13.8 99 ----- ----- Basin Index (%) 102 86 LOWER GREEN RIVER Blacks Fork Jct 8869 4.5 -M * 7.4 -M * Buck Pasture 9632 10.4 -M * 10.5 -M * EF Blacks Fork GS 9360 8.9 -M * 6.5 -M * Hams Fork 7840 6.4 5.7 112 6.2 6.4 97 Hewinta 9500 6.7 4.9 137 8.9 7.5 119 Hickerson Park 9122 6.4 3.2 200 7.1 5.5 129 Hole-in-Rock 9168 7.0 3.4 206 7.1 5.2 137 Indian Creek 9425 11.6 12.2 95 9.0 12.1 74 Kelley R.S. 8180 8.6 7.4 116 9.1 10.1 90 Spirit Lk 10235 10.3 -M * 11.0 -M * Steel Creek Park 10158 9.9 7.3 136 10.7 8.7 123 ----- ----- Basin Index (%) 128 105 UPPER BEAR RIVER Bear River RS 8777 5.2 -M * 6.6 -M * Bug Lake 7987 12.1 8.6 141 11.4 10.8 106 Burts Miller Ranch 8000 4.5 -M * 4.4 -M * Chalk Creek #1 9171 11.1 11.6 96 10.6 13.7 77 Hayden Fork 9130 9.3 7.1 131 12.2 11.4 107 Kelley R.S. 8180 8.6 7.4 116 9.1 10.1 90 Lily Lake 9133 6.6 6.5 102 7.5 9.4 80 Monte Cristo 8932 16.1 13.6 118 14.7 14.3 103 Salt River Summit 7640 7.7 6.3 122 8.3 9.2 90 Spring Creek Divide 9000 13.1 12.0 109 12.8 13.4 96 ----- ----- Basin Index (%) 116 94 ----------------------------------------------------------------------------- -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.