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 19 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 9.3 9.8 95 9.7 12.4 78 Black Bear 8170 18.4 21.3 86 17.8 21.9 81 Blind Bull Sum 8650 13.9 12.5 111 8.8 11.6 76 Cottonwood Creek 7670 14.2 10.9 130 14.7 14.1 104 East Rim Divide 7930 6.5 5.9 110 5.5 6.9 80 Grand Targhee 9260 22.8 21.4 107 15.4 18.1 85 Granite Creek 6770 9.2 9.0 102 9.2 12.0 77 Grassy Lake 7265 17.0 17.2 99 26.4 21.2 125 Gros Ventre Summit 8750 5.8 7.6 76 5.6 7.4 76 Gunsight Pass 9820 7.0 7.6 92 7.2 8.0 90 Lewis Lake Divide 7850 14.2 17.0 84 17.3 20.7 84 Phillips Bench 8200 15.7 15.3 103 15.4 16.2 95 Salt River Summit 7640 8.0 6.6 121 8.6 9.5 91 Snake River Station 6920 9.8 9.3 105 11.8 13.7 86 Spring Creek Divide 9000 13.5 12.5 108 13.1 13.8 95 Thumb Divide 7980 7.9 8.2 96 8.4 10.9 77 Togwotee Pass 9580 14.5 13.1 111 13.7 14.3 96 Two Ocean Plateau 9240 16.0 15.6 103 12.6 15.6 81 Willow Creek 8080 16.1 14.8 109 17.7 19.3 92 Younts Peak 8350 9.6 8.7 110 6.0 9.5 63 ----- ----- Basin Index (%) 102 88 MADISON-GALLATIN Black Bear 8170 18.4 21.3 86 17.8 21.9 81 Canyon 7870 7.6 7.4 103 7.8 9.5 82 Madison Plateau 7750 11.9 13.0 92 10.9 15.4 71 West Yellowstone 6700 6.2 6.5 95 4.7 8.5 55 Whiskey Creek 6800 8.5 8.6 99 9.9 11.9 83 ----- ----- Basin Index (%) 93 76 YELLOWSTONE Beartooth Lake 9360 12.8 12.6 102 11.9 11.5 103 Burnt Mtn 5880 1.9 2.3 83 6.6 7.4 89 Canyon 7870 7.6 7.4 103 7.8 9.5 82 Cole Creek 7850 7.5 7.4 101 6.4 7.1 90 Evening Star 9200 15.8 14.3 110 17.3 16.2 107 Fisher Creek 9100 18.0 18.8 96 18.4 18.5 99 Northeast Entrance 7350 6.2 5.5 113 7.2 7.5 96 Parker Peak 9400 13.9 11.8 118 13.0 10.3 126 Sylvan Lake 8420 11.5 11.4 101 13.0 13.4 97 Thumb Divide 7980 7.9 8.2 96 8.4 10.9 77 Two Ocean Plateau 9240 16.0 15.6 103 12.6 15.6 81 White Mill 8700 14.8 13.2 112 11.7 13.9 84 Wolverine 7650 8.1 6.1 133 8.0 7.5 107 Younts Peak 8350 9.6 8.7 110 6.0 9.5 63 ----- ----- Basin Index (%) 106 93 WIND RIVER Burroughs Creek 8750 6.7 -M * 8.2 -M * Castle Creek 8400 3.1 -M * 3.7 -M * Cold Springs 9630 4.2 4.2 100 4.0 5.8 69 Deer Park 9700 7.6 7.6 100 6.7 11.2 60 Hobbs Park 10100 7.1 7.4 96 6.1 7.2 85 Kirwin 9550 7.0 5.3 132 5.7 6.7 85 Little Warm 9370 6.7 5.7 118 4.5 7.4 61 Owl Creek 8975 2.9 3.0 97 3.4 3.3 103 South Pass 9040 6.6 8.0 82 4.7 9.9 47 St. Lawrence Alt 8620 2.7 3.6 75 3.8 4.9 78 Togwotee Pass 9580 14.5 13.1 111 13.7 14.3 96 Townsend Creek 8700 4.9 4.5 109 4.9 6.6 74 ----- ----- Basin Index (%) 103 74 BIGHORN BASIN Bald Mtn. 9380 12.0 10.0 120 8.4 9.7 87 Bear Trap Meadow 8200 5.2 3.0 173 6.0 4.7 128 Bone Springs Div 9350 9.8 8.9 110 7.3 8.7 84 Grave Springs 8550 5.8 4.5 129 6.4 5.9 108 Kirwin 9550 7.0 5.3 132 5.7 6.7 85 Marquette 8760 4.0 -M * 5.0 -M * Middle Powder 7760 6.6 6.0 110 7.5 6.8 110 Owl Creek 8975 2.9 3.0 97 3.4 3.3 103 Powder River Pass 9480 7.5 5.8 129 7.6 7.1 107 Shell Creek 9580 -M 8.5 * -M 7.9 * Timber Creek 7950 3.5 2.8 125 4.0 4.3 93 ----- ----- Basin Index (%) 122 98 SHOSHONE RIVER Blackwater 9780 12.9 13.0 99 12.6 12.0 105 Evening Star 9200 15.8 14.3 110 17.3 16.2 107 Marquette 8760 4.0 -M * 5.0 -M * Sylvan Lake 8420 11.5 11.4 101 13.0 13.4 97 Sylvan Road 7120 7.2 7.0 103 10.8 10.8 100 Younts Peak 8350 9.6 8.7 110 6.0 9.5 63 ----- ----- Basin Index (%) 105 96 POWDER RIVER Bear Trap Meadow 8200 5.2 3.0 173 6.0 4.7 128 Cloud Peak Reservoir 9860 7.0 7.5 93 7.2 7.3 99 Grave Springs 8550 5.8 4.5 129 6.4 5.9 108 Hansen Sawmill 8360 3.7 3.6 103 4.7 4.6 102 Middle Powder 7760 6.6 6.0 110 7.5 6.8 110 Powder River Pass 9480 7.5 5.8 129 7.6 7.1 107 Soldier Park 8720 2.1 -M * 4.7 -M * ----- ----- Basin Index (%) 118 108 TONGUE RIVER Big Goose 7990 4.3 4.4 98 5.8 6.0 97 Bone Springs Div 9350 9.8 8.9 110 7.3 8.7 84 Burgess Junction 7880 5.6 6.1 92 -M 6.9 * Dome Lake 8880 5.6 6.3 89 -M 7.7 * Little Goose 8870 5.1 -M * 4.5 -M * Sucker Creek 8880 7.0 6.5 108 5.6 7.9 71 Tie Creek 6870 3.4 2.9 117 6.7 6.6 102 ----- ----- Basin Index (%) 102 87 BELLE FOURCHE Blind Park 6890 4.0 4.1 98 5.2 7.1 73 Cole Canyon 5910 2.8 2.9 97 -M 5.3 * ----- ----- Basin Index (%) 97 73 CHEYENNE RIVER BASIN Blind Park 6890 4.0 4.1 98 5.2 7.1 73 North Rapid Creek 6130 3.7 3.8 97 5.4 5.8 93 ----- ----- Basin Index (%) 97 82 UPPER N. PLATTE Arapaho Ridge 10960 12.8 11.2 114 12.4 12.9 96 Blackhall Mtn 9820 17.2 -M * 17.4 -M * Columbine 9160 15.5 12.7 122 -M 14.5 * Divide Peak 8880 12.4 10.8 115 13.6 12.4 110 Joe Wright 10120 9.0 11.7 77 13.4 14.4 93 Laprele Creek 8375 7.1 5.1 139 7.3 6.9 106 Med Bow 10500 25.0 -M * 21.0 -M * Never Summer 10280 10.2 10.8 94 7.2 -M * North French Creek 10130 17.9 14.3 125 17.8 15.0 119 Old Battle 10000 18.8 16.1 117 17.7 20.1 88 Rawah 9020 7.0 5.6 125 8.4 8.5 99 Sage Creek Basin 7850 9.1 7.4 123 8.0 8.8 91 Sand Lake 10050 -M 14.7 * -M 13.6 * South Brush Creek 8440 6.7 6.3 106 7.1 8.6 83 Tower 10500 24.5 23.6 104 22.7 22.7 100 Webber Springs 9250 13.6 12.1 112 14.7 15.2 97 Whiskey Park 8950 19.0 14.2 134 19.3 15.7 123 Willow Creek Pass 9540 6.8 6.4 106 6.2 7.5 83 Zirkel 9340 16.3 16.0 102 18.5 16.8 110 ----- ----- Basin Index (%) 112 101 SWEETWATER Deer Park 9700 7.6 7.6 100 6.7 11.2 60 Larsen Creek 9000 3.3 6.3 52 5.0 -M * South Pass 9040 6.6 8.0 82 4.7 9.9 47 ----- ----- Basin Index (%) 80 54 LOWER N. PLATTE Casper Mtn. 7900 8.8 6.8 129 6.2 8.3 75 Laprele Creek 8375 7.1 5.1 139 7.3 6.9 106 Reno Hill 8400 9.2 6.8 135 9.6 8.2 117 Windy Peak 7900 5.9 3.8 155 5.0 5.9 85 ----- ----- Basin Index (%) 138 96 LARAMIE RIVER Brooklyn Lake 10240 15.5 11.1 140 15.2 11.5 132 Cinnabar Park 9574 14.0 11.7 120 15.6 14.4 108 Crow Creek 8330 4.8 5.2 92 6.6 6.1 108 Deadman Hill 10220 10.4 8.5 122 9.0 9.3 97 Rawah 9020 7.0 5.6 125 8.4 8.5 99 Roach 9700 8.8 9.0 98 8.4 10.7 79 Windy Peak 7900 5.9 3.8 155 5.0 5.9 85 ----- ----- Basin Index (%) 121 103 S. PLATTE Black Mountain 8920 6.1 -M * 7.4 -M * Crow Creek 8330 4.8 5.2 92 6.6 6.1 108 Deadman Hill 10220 10.4 8.5 122 9.0 9.3 97 ----- ----- Basin Index (%) 111 101 LITTLE SNAKE RIVER Battle Mountain 7440 8.5 5.9 144 8.6 8.7 99 Divide Peak 8880 12.4 10.8 115 13.6 12.4 110 Elk River 8700 12.5 9.6 130 10.2 11.4 89 Little Snake River 8915 16.3 12.6 129 20.5 18.2 113 Old Battle 10000 18.8 16.1 117 17.7 20.1 88 Sage Creek Basin 7850 9.1 7.4 123 8.0 8.8 91 Sandstone RS 8150 10.2 7.1 144 9.6 10.7 90 Whiskey Park 8950 19.0 14.2 134 19.3 15.7 123 ----- ----- Basin Index (%) 128 101 UPPER GREEN RIVER Big Sandy Opening 9080 5.9 7.0 84 5.1 7.6 67 Blind Bull Sum 8650 13.9 12.5 111 8.8 11.6 76 East Rim Divide 7930 6.5 5.9 110 5.5 6.9 80 Elkhart Park G.S. 9400 5.9 6.7 88 5.9 7.7 77 Gros Ventre Summit 8750 5.8 7.6 76 5.6 7.4 76 Gunsight Pass 9820 7.0 7.6 92 7.2 8.0 90 Indian Creek 9425 12.1 13.0 93 9.4 12.5 75 Kendall R.S. 7740 6.0 6.7 90 6.1 8.2 74 Loomis Park 8240 8.2 8.2 100 10.6 10.1 105 New Fork Lake 8340 -M 5.9 * -M 6.3 * Pocket Creek 9360 -M -M * 4.5 -M * Snider Basin 8060 7.6 6.5 117 8.2 8.2 100 Spring Creek Divide 9000 13.5 12.5 108 13.1 13.8 95 Triple Peak 8500 14.5 11.6 125 14.5 14.2 102 ----- ----- Basin Index (%) 101 86 LOWER GREEN RIVER Blacks Fork Jct 8869 4.8 -M * 7.7 -M * Buck Pasture 9632 10.6 -M * 10.9 -M * EF Blacks Fork GS 9360 9.4 -M * 6.1 -M * Hams Fork 7840 6.6 6.1 108 6.6 6.6 100 Hewinta 9500 6.8 5.0 136 9.1 7.7 118 Hickerson Park 9122 6.5 3.2 203 7.2 5.7 126 Hole-in-Rock 9168 7.0 3.6 194 7.1 5.3 134 Indian Creek 9425 12.1 13.0 93 9.4 12.5 75 Kelley R.S. 8180 9.1 7.7 118 9.5 10.4 91 Spirit Lk 10235 10.7 -M * 11.4 -M * Steel Creek Park 10158 10.2 7.5 136 11.1 8.9 125 ----- ----- Basin Index (%) 126 105 UPPER BEAR RIVER Bear River RS 8777 5.6 -M * 7.0 -M * Bug Lake 7987 12.5 8.9 140 11.7 11.1 105 Burts Miller Ranch 8000 4.7 -M * 4.7 -M * Chalk Creek #1 9171 11.8 11.9 99 11.1 13.9 80 Hayden Fork 9130 9.9 7.5 132 12.7 11.7 109 Kelley R.S. 8180 9.1 7.7 118 9.5 10.4 91 Lily Lake 9133 6.4 6.6 97 7.9 9.6 82 Monte Cristo 8932 16.6 13.8 120 15.3 14.6 105 Salt River Summit 7640 8.0 6.6 121 8.6 9.5 91 Spring Creek Divide 9000 13.5 12.5 108 13.1 13.8 95 ----- ----- Basin Index (%) 116 95 ----------------------------------------------------------------------------- -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.