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 TUESDAY: JANUARY 14 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 8.6 9.3 92 8.9 11.9 75 Black Bear 8170 17.0 20.4 83 16.6 21.0 79 Blind Bull Sum 8650 12.5 12.0 104 7.9 11.0 72 Cottonwood Creek 7670 13.0 10.0 130 13.3 13.6 98 East Rim Divide 7930 6.0 5.4 111 5.1 6.6 77 Grand Targhee 9260 -M 21.0 * 14.4 17.8 81 Granite Creek 6770 8.3 8.2 101 8.5 11.5 74 Grassy Lake 7265 15.6 16.2 96 22.3 20.2 110 Gros Ventre Summit 8750 5.5 7.4 74 5.3 7.1 75 Gunsight Pass 9820 6.7 7.2 93 6.9 7.7 90 Lewis Lake Divide 7850 12.7 16.1 79 15.6 19.8 79 Phillips Bench 8200 14.6 14.2 103 14.4 15.5 93 Salt River Summit 7640 6.9 6.0 115 7.5 9.0 83 Snake River Station 6920 9.0 8.8 102 10.9 13.1 83 Spring Creek Divide 9000 12.1 11.6 104 11.9 13.2 90 Thumb Divide 7980 7.1 7.8 91 7.7 10.4 74 Togwotee Pass 9580 13.9 12.8 109 13.1 13.7 96 Two Ocean Plateau 9240 14.9 15.3 97 11.7 15.0 78 Willow Creek 8080 14.7 13.6 108 16.4 18.5 89 Younts Peak 8350 8.9 8.2 109 5.1 9.1 56 ----- ----- Basin Index (%) 99 84 MADISON-GALLATIN Black Bear 8170 17.0 20.4 83 16.6 21.0 79 Canyon 7870 7.0 7.0 100 7.2 9.1 79 Madison Plateau 7750 11.2 11.8 95 10.1 14.8 68 West Yellowstone 6700 5.8 6.0 97 4.4 8.2 54 Whiskey Creek 6800 7.9 8.2 96 9.3 11.5 81 ----- ----- Basin Index (%) 92 74 YELLOWSTONE Beartooth Lake 9360 12.3 12.1 102 11.3 10.9 104 Burnt Mtn 5880 1.8 2.0 90 6.1 7.3 84 Canyon 7870 7.0 7.0 100 7.2 9.1 79 Cole Creek 7850 7.0 7.0 100 6.0 6.9 87 Evening Star 9200 15.0 13.8 109 16.3 15.5 105 Fisher Creek 9100 17.2 17.8 97 17.5 17.7 99 Northeast Entrance 7350 5.9 5.1 116 7.0 7.1 99 Parker Peak 9400 -M 11.3 * -M 9.8 * Sylvan Lake 8420 11.0 11.0 100 12.4 12.9 96 Thumb Divide 7980 7.1 7.8 91 7.7 10.4 74 Two Ocean Plateau 9240 14.9 15.3 97 11.7 15.0 78 White Mill 8700 14.3 12.3 116 11.2 13.3 84 Wolverine 7650 7.8 5.8 134 7.7 7.2 107 Younts Peak 8350 8.9 8.2 109 5.1 9.1 56 ----- ----- Basin Index (%) 104 89 WIND RIVER Burroughs Creek 8750 6.4 -M * 7.6 -M * Castle Creek 8400 3.1 -M * 3.6 -M * Cold Springs 9630 3.9 3.8 103 3.7 5.6 66 Deer Park 9700 6.6 7.1 93 5.5 10.7 51 Hobbs Park 10100 6.4 7.2 89 5.4 6.9 78 Kirwin 9550 6.8 5.2 131 5.4 6.5 83 Little Warm 9370 6.5 5.4 120 4.1 7.1 58 Owl Creek 8975 2.8 2.9 97 3.4 3.2 106 South Pass 9040 5.7 7.5 76 3.9 9.6 41 St. Lawrence Alt 8620 2.7 3.4 79 3.7 4.7 79 Togwotee Pass 9580 13.9 12.8 109 13.1 13.7 96 Townsend Creek 8700 4.7 4.3 109 4.6 6.4 72 ----- ----- Basin Index (%) 101 71 BIGHORN BASIN Bald Mtn. 9380 11.7 9.8 119 8.0 9.3 86 Bear Trap Meadow 8200 5.1 2.8 182 5.9 4.6 128 Bone Springs Div 9350 9.7 8.4 115 7.0 8.3 84 Grave Springs 8550 5.6 4.3 130 6.1 5.7 107 Kirwin 9550 6.8 5.2 131 5.4 6.5 83 Marquette 8760 3.9 -M * 4.9 -M * Middle Powder 7760 6.4 5.8 110 7.3 6.6 111 Owl Creek 8975 2.8 2.9 97 3.4 3.2 106 Powder River Pass 9480 7.3 5.7 128 7.3 6.8 107 Shell Creek 9580 -M 8.0 * -M 7.5 * Timber Creek 7950 3.6 2.4 150 4.0 4.2 95 ----- ----- Basin Index (%) 125 99 SHOSHONE RIVER Blackwater 9780 12.5 12.7 98 11.9 11.5 103 Evening Star 9200 15.0 13.8 109 16.3 15.5 105 Marquette 8760 3.9 -M * 4.9 -M * Sylvan Lake 8420 11.0 11.0 100 12.4 12.9 96 Sylvan Road 7120 6.8 6.4 106 10.1 10.5 96 Younts Peak 8350 8.9 8.2 109 5.1 9.1 56 ----- ----- Basin Index (%) 104 94 POWDER RIVER Bear Trap Meadow 8200 5.1 2.8 182 5.9 4.6 128 Cloud Peak Reservoir 9860 6.7 7.1 94 6.7 7.0 96 Grave Springs 8550 5.6 4.3 130 6.1 5.7 107 Hansen Sawmill 8360 3.6 3.5 103 4.6 4.5 102 Middle Powder 7760 6.4 5.8 110 7.3 6.6 111 Powder River Pass 9480 7.3 5.7 128 7.3 6.8 107 Soldier Park 8720 2.1 -M * 4.8 -M * ----- ----- Basin Index (%) 119 108 TONGUE RIVER Big Goose 7990 4.0 4.2 95 5.1 5.8 88 Bone Springs Div 9350 9.7 8.4 115 7.0 8.3 84 Burgess Junction 7880 5.4 5.5 98 -M 6.6 * Dome Lake 8880 5.3 5.9 90 -M 7.4 * Little Goose 8870 4.9 -M * 4.4 -M * Sucker Creek 8880 6.8 6.2 110 5.3 7.6 70 Tie Creek 6870 3.3 2.5 132 6.6 6.3 105 ----- ----- Basin Index (%) 106 86 BELLE FOURCHE Blind Park 6890 4.0 4.0 100 5.0 6.8 74 Cole Canyon 5910 3.0 2.6 115 -M 5.1 * ----- ----- Basin Index (%) 106 74 CHEYENNE RIVER BASIN Blind Park 6890 4.0 4.0 100 5.0 6.8 74 North Rapid Creek 6130 3.6 3.6 100 5.2 5.6 93 ----- ----- Basin Index (%) 100 82 UPPER N. PLATTE Arapaho Ridge 10960 12.4 11.0 113 12.0 12.7 94 Blackhall Mtn 9820 16.3 -M * 16.6 -M * Columbine 9160 14.6 12.1 121 14.1 13.9 101 Divide Peak 8880 11.8 10.1 117 12.9 11.8 109 Joe Wright 10120 8.6 10.9 79 12.8 13.9 92 Laprele Creek 8375 6.9 4.7 147 7.3 6.6 111 Med Bow 10500 23.3 -M * 19.9 -M * Never Summer 10280 9.6 10.4 92 6.9 -M * North French Creek 10130 16.7 13.7 122 16.6 14.4 115 Old Battle 10000 17.8 15.4 116 16.8 19.2 88 Rawah 9020 -M 5.3 * -M 8.4 * Sage Creek Basin 7850 8.8 7.1 124 7.7 8.6 90 Sand Lake 10050 15.5 14.2 109 14.6 13.0 112 South Brush Creek 8440 6.3 6.0 105 6.8 8.3 82 Tower 10500 23.1 22.0 105 21.4 21.8 98 Webber Springs 9250 12.8 11.7 109 14.0 14.5 97 Whiskey Park 8950 17.9 12.4 144 18.3 14.9 123 Willow Creek Pass 9540 6.5 6.2 105 6.1 7.3 84 Zirkel 9340 15.4 15.3 101 17.6 16.5 107 ----- ----- Basin Index (%) 112 101 SWEETWATER Deer Park 9700 6.6 7.1 93 5.5 10.7 51 Larsen Creek 9000 2.7 5.9 46 4.6 -M * South Pass 9040 5.7 7.5 76 3.9 9.6 41 ----- ----- Basin Index (%) 73 46 LOWER N. PLATTE Casper Mtn. 7900 8.7 6.7 130 6.1 8.1 75 Laprele Creek 8375 6.9 4.7 147 7.3 6.6 111 Reno Hill 8400 8.9 6.5 137 9.4 7.9 119 Windy Peak 7900 5.7 3.5 163 4.9 5.7 86 ----- ----- Basin Index (%) 141 98 LARAMIE RIVER Brooklyn Lake 10240 14.7 10.4 141 14.3 10.8 132 Cinnabar Park 9574 13.5 11.5 117 14.9 14.1 106 Crow Creek 8330 4.9 4.9 100 6.6 6.0 110 Deadman Hill 10220 10.0 8.0 125 8.6 8.9 97 Rawah 9020 -M 5.3 * -M 8.4 * Roach 9700 8.4 8.5 99 7.9 10.3 77 Windy Peak 7900 5.7 3.5 163 4.9 5.7 86 ----- ----- Basin Index (%) 122 103 S. PLATTE Black Mountain 8920 5.9 -M * 7.1 -M * Crow Creek 8330 4.9 4.9 100 6.6 6.0 110 Deadman Hill 10220 10.0 8.0 125 8.6 8.9 97 ----- ----- Basin Index (%) 116 102 LITTLE SNAKE RIVER Battle Mountain 7440 8.3 5.3 157 8.3 8.3 100 Divide Peak 8880 11.8 10.1 117 12.9 11.8 109 Elk River 8700 11.9 8.9 134 9.3 10.9 85 Little Snake River 8915 15.5 12.1 128 19.5 17.8 110 Old Battle 10000 17.8 15.4 116 16.8 19.2 88 Sage Creek Basin 7850 8.8 7.1 124 7.7 8.6 90 Sandstone RS 8150 10.0 6.4 156 9.2 10.2 90 Whiskey Park 8950 17.9 12.4 144 18.3 14.9 123 ----- ----- Basin Index (%) 131 100 UPPER GREEN RIVER Big Sandy Opening 9080 5.4 7.0 77 4.7 7.3 64 Blind Bull Sum 8650 12.5 12.0 104 7.9 11.0 72 East Rim Divide 7930 6.0 5.4 111 5.1 6.6 77 Elkhart Park G.S. 9400 5.4 6.2 87 5.4 7.4 73 Gros Ventre Summit 8750 5.5 7.4 74 5.3 7.1 75 Gunsight Pass 9820 6.7 7.2 93 6.9 7.7 90 Indian Creek 9425 10.7 11.9 90 8.5 12.0 71 Kendall R.S. 7740 5.6 6.4 88 5.7 7.9 72 Loomis Park 8240 7.6 7.6 100 9.7 9.6 101 New Fork Lake 8340 5.9 5.4 109 4.4 6.1 72 Pocket Creek 9360 -M -M * 4.0 -M * Snider Basin 8060 6.7 6.3 106 7.3 7.9 92 Spring Creek Divide 9000 12.1 11.6 104 11.9 13.2 90 Triple Peak 8500 13.3 11.1 120 13.2 13.5 98 ----- ----- Basin Index (%) 98 82 LOWER GREEN RIVER Blacks Fork Jct 8869 4.5 -M * 7.2 -M * Buck Pasture 9632 10.1 -M * 10.2 -M * EF Blacks Fork GS 9360 8.6 -M * 5.8 -M * Hams Fork 7840 5.9 5.6 105 5.9 6.3 94 Hewinta 9500 6.4 4.8 133 8.8 7.4 119 Hickerson Park 9122 6.4 3.2 200 7.0 5.5 127 Hole-in-Rock 9168 7.0 3.3 212 7.1 5.2 137 Indian Creek 9425 10.7 11.9 90 8.5 12.0 71 Kelley R.S. 8180 8.1 7.3 111 8.6 10.0 86 Spirit Lk 10235 10.2 -M * 10.9 -M * Steel Creek Park 10158 9.6 7.2 133 10.5 8.6 122 ----- ----- Basin Index (%) 125 103 UPPER BEAR RIVER Bear River RS 8777 5.0 -M * 6.4 -M * Bug Lake 7987 11.3 8.3 136 10.7 10.6 101 Burts Miller Ranch 8000 4.4 -M * 4.5 -M * Chalk Creek #1 9171 10.9 11.4 96 10.3 13.5 76 Hayden Fork 9130 8.9 6.9 129 11.8 11.3 104 Kelley R.S. 8180 8.1 7.3 111 8.6 10.0 86 Lily Lake 9133 6.3 6.3 100 7.2 9.2 78 Monte Cristo 8932 15.4 13.3 116 14.0 14.0 100 Salt River Summit 7640 6.9 6.0 115 7.5 9.0 83 Spring Creek Divide 9000 12.1 11.6 104 11.9 13.2 90 ----- ----- Basin Index (%) 112 90 ----------------------------------------------------------------------------- -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.