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 28 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 10.2 10.6 96 10.6 13.6 78 Black Bear 8170 20.5 23.0 89 19.9 24.2 82 Blind Bull Sum 8650 15.2 13.3 114 9.4 12.5 75 Cottonwood Creek 7670 15.8 12.1 131 16.8 15.3 110 East Rim Divide 7930 7.0 6.7 104 5.8 7.5 77 Grand Targhee 9260 25.7 23.2 111 17.8 20.2 88 Granite Creek 6770 10.0 9.9 101 10.2 13.2 77 Grassy Lake 7265 20.1 19.2 105 30.7 23.2 132 Gros Ventre Summit 8750 6.0 8.1 74 5.8 8.0 72 Gunsight Pass 9820 7.6 8.0 95 7.7 8.6 90 Lewis Lake Divide 7850 16.7 19.0 88 19.5 22.5 87 Phillips Bench 8200 16.8 15.9 106 16.3 17.6 93 Salt River Summit 7640 8.7 7.4 118 9.3 10.3 90 Snake River Station 6920 11.0 10.1 109 13.1 15.0 87 Spring Creek Divide 9000 14.8 13.7 108 14.3 14.9 96 Thumb Divide 7980 8.8 9.3 95 9.1 11.9 76 Togwotee Pass 9580 15.3 14.5 106 14.6 15.4 95 Two Ocean Plateau 9240 17.6 16.5 107 14.2 16.8 85 Willow Creek 8080 18.8 16.7 113 20.1 21.0 96 Younts Peak 8350 10.2 9.1 112 6.4 10.2 63 ----- ----- Basin Index (%) 104 90 MADISON-GALLATIN Black Bear 8170 20.5 23.0 89 19.9 24.2 82 Canyon 7870 8.2 7.9 104 8.4 10.4 81 Madison Plateau 7750 12.8 13.9 92 10.8 16.9 64 West Yellowstone 6700 6.7 6.9 97 5.0 9.4 53 Whiskey Creek 6800 9.2 9.5 97 10.6 12.9 82 ----- ----- Basin Index (%) 94 74 YELLOWSTONE Beartooth Lake 9360 13.5 13.4 101 12.5 12.5 100 Burnt Mtn 5880 2.0 2.4 83 6.4 7.7 83 Canyon 7870 8.2 7.9 104 8.4 10.4 81 Cole Creek 7850 7.6 8.0 95 6.5 7.4 88 Evening Star 9200 17.2 15.5 111 18.8 17.5 107 Fisher Creek 9100 19.3 20.1 96 19.8 20.2 98 Northeast Entrance 7350 6.5 6.1 107 7.6 8.0 95 Parker Peak 9400 15.0 12.4 121 14.0 11.1 126 Sylvan Lake 8420 12.6 12.6 100 14.2 14.4 99 Thumb Divide 7980 8.8 9.3 95 9.1 11.9 76 Two Ocean Plateau 9240 17.6 16.5 107 14.2 16.8 85 White Mill 8700 15.9 14.0 114 12.5 15.0 83 Wolverine 7650 8.4 6.7 125 8.3 8.0 104 Younts Peak 8350 10.2 9.1 112 6.4 10.2 63 ----- ----- Basin Index (%) 106 93 WIND RIVER Burroughs Creek 8750 7.1 -M * 8.6 -M * Castle Creek 8400 3.2 -M * 3.9 -M * Cold Springs 9630 4.2 4.3 98 4.0 6.1 66 Deer Park 9700 7.8 8.8 89 6.9 11.9 58 Hobbs Park 10100 7.3 7.9 92 6.2 7.6 82 Kirwin 9550 7.1 5.6 127 5.9 7.1 83 Little Warm 9370 7.0 6.1 115 4.5 7.9 57 Owl Creek 8975 3.0 3.1 97 3.5 3.4 103 South Pass 9040 6.7 8.3 81 4.9 10.6 46 St. Lawrence Alt 8620 2.7 4.1 66 3.8 5.2 73 Togwotee Pass 9580 15.3 14.5 106 14.6 15.4 95 Townsend Creek 8700 4.9 5.0 98 5.0 6.9 72 ----- ----- Basin Index (%) 97 72 BIGHORN BASIN Bald Mtn. 9380 12.6 10.6 119 9.4 10.4 90 Bear Trap Meadow 8200 5.7 3.3 173 6.3 5.1 124 Bone Springs Div 9350 10.1 9.6 105 7.6 9.3 82 Grave Springs 8550 6.2 4.9 127 6.7 6.3 106 Kirwin 9550 7.1 5.6 127 5.9 7.1 83 Marquette 8760 4.2 -M * 5.2 -M * Middle Powder 7760 7.1 6.2 115 8.0 7.2 111 Owl Creek 8975 3.0 3.1 97 3.5 3.4 103 Powder River Pass 9480 8.1 6.1 133 8.0 7.7 104 Shell Creek 9580 9.5 8.9 107 9.3 8.6 108 Timber Creek 7950 3.5 3.0 117 4.1 4.4 93 ----- ----- Basin Index (%) 119 99 SHOSHONE RIVER Blackwater 9780 13.9 14.2 98 13.6 12.9 105 Evening Star 9200 17.2 15.5 111 18.8 17.5 107 Marquette 8760 4.2 -M * 5.2 -M * Sylvan Lake 8420 12.6 12.6 100 14.2 14.4 99 Sylvan Road 7120 7.9 7.6 104 -M 11.6 * Younts Peak 8350 10.2 9.1 112 6.4 10.2 63 ----- ----- Basin Index (%) 105 96 POWDER RIVER Bear Trap Meadow 8200 5.7 3.3 173 6.3 5.1 124 Cloud Peak Reservoir 9860 7.4 8.0 92 7.2 7.7 94 Grave Springs 8550 6.2 4.9 127 6.7 6.3 106 Hansen Sawmill 8360 4.1 4.0 102 5.1 4.9 104 Middle Powder 7760 7.1 6.2 115 8.0 7.2 111 Powder River Pass 9480 8.1 6.1 133 8.0 7.7 104 Soldier Park 8720 2.5 -M * 5.0 -M * ----- ----- Basin Index (%) 119 106 TONGUE RIVER Big Goose 7990 4.6 4.7 98 5.7 6.4 89 Bone Springs Div 9350 10.1 9.6 105 7.6 9.3 82 Burgess Junction 7880 5.7 6.5 88 6.6 7.2 92 Dome Lake 8880 5.9 6.6 89 -M 8.1 * Little Goose 8870 5.5 -M * 4.7 -M * Sucker Creek 8880 7.3 7.0 104 5.8 8.4 69 Tie Creek 6870 3.5 3.2 109 6.9 6.9 100 ----- ----- Basin Index (%) 99 85 BELLE FOURCHE Blind Park 6890 4.7 4.4 107 5.7 7.5 76 Cole Canyon 5910 2.7 3.1 87 -M 5.6 * ----- ----- Basin Index (%) 99 76 CHEYENNE RIVER BASIN Blind Park 6890 4.7 4.4 107 5.7 7.5 76 North Rapid Creek 6130 4.1 4.1 100 5.4 6.1 89 ----- ----- Basin Index (%) 104 82 UPPER N. PLATTE Arapaho Ridge 10960 13.5 12.7 106 13.2 13.7 96 Blackhall Mtn 9820 18.0 -M * 18.1 -M * Columbine 9160 17.4 14.2 123 16.2 15.8 103 Divide Peak 8880 13.7 11.8 116 14.7 13.2 111 Joe Wright 10120 9.7 12.6 77 14.4 15.5 93 Laprele Creek 8375 7.4 5.3 140 7.7 7.3 105 Med Bow 10500 27.7 -M * 23.2 -M * Never Summer 10280 10.7 11.8 91 7.6 -M * North French Creek 10130 20.7 15.6 133 20.3 16.4 124 Old Battle 10000 20.3 18.6 109 18.8 21.7 87 Rawah 9020 7.3 6.0 122 8.9 8.9 100 Sage Creek Basin 7850 9.9 8.0 124 8.8 9.4 94 Sand Lake 10050 -M 16.0 * -M 14.6 * South Brush Creek 8440 7.9 7.1 111 8.1 9.3 87 Tower 10500 27.1 26.5 102 25.1 24.8 101 Webber Springs 9250 14.2 13.1 108 15.6 16.5 95 Whiskey Park 8950 20.9 15.2 138 20.9 17.2 122 Willow Creek Pass 9540 7.1 7.2 99 6.6 8.0 82 Zirkel 9340 17.9 17.6 102 20.6 18.1 114 ----- ----- Basin Index (%) 111 102 SWEETWATER Deer Park 9700 7.8 8.8 89 6.9 11.9 58 Larsen Creek 9000 3.6 7.0 51 5.1 -M * South Pass 9040 6.7 8.3 81 4.9 10.6 46 ----- ----- Basin Index (%) 75 52 LOWER N. PLATTE Casper Mtn. 7900 9.2 7.4 124 6.4 8.9 72 Laprele Creek 8375 7.4 5.3 140 7.7 7.3 105 Reno Hill 8400 9.6 7.6 126 10.0 8.7 115 Windy Peak 7900 6.0 4.0 150 5.3 6.2 85 ----- ----- Basin Index (%) 133 95 LARAMIE RIVER Brooklyn Lake 10240 16.7 11.9 140 16.1 12.5 129 Cinnabar Park 9574 15.0 12.9 116 16.6 15.4 108 Crow Creek 8330 4.8 5.6 86 6.8 6.4 106 Deadman Hill 10220 10.9 9.6 114 9.4 10.0 94 Rawah 9020 7.3 6.0 122 8.9 8.9 100 Roach 9700 9.2 9.8 94 9.0 11.5 78 Windy Peak 7900 6.0 4.0 150 5.3 6.2 85 ----- ----- Basin Index (%) 117 102 S. PLATTE Black Mountain 8920 6.1 -M * 7.5 -M * Crow Creek 8330 4.8 5.6 86 6.8 6.4 106 Deadman Hill 10220 10.9 9.6 114 9.4 10.0 94 ----- ----- Basin Index (%) 103 99 LITTLE SNAKE RIVER Battle Mountain 7440 9.6 6.8 141 9.5 9.4 101 Divide Peak 8880 13.7 11.8 116 14.7 13.2 111 Elk River 8700 13.2 10.6 125 10.5 12.3 85 Little Snake River 8915 17.9 14.8 121 22.2 19.9 112 Old Battle 10000 20.3 18.6 109 18.8 21.7 87 Sage Creek Basin 7850 9.9 8.0 124 8.8 9.4 94 Sandstone RS 8150 11.2 7.7 145 10.2 11.6 88 Whiskey Park 8950 20.9 15.2 138 20.9 17.2 122 ----- ----- Basin Index (%) 125 101 UPPER GREEN RIVER Big Sandy Opening 9080 6.2 7.8 79 5.4 8.1 67 Blind Bull Sum 8650 15.2 13.3 114 9.4 12.5 75 East Rim Divide 7930 7.0 6.7 104 5.8 7.5 77 Elkhart Park G.S. 9400 6.4 7.2 89 6.4 8.2 78 Gros Ventre Summit 8750 6.0 8.1 74 5.8 8.0 72 Gunsight Pass 9820 7.6 8.0 95 7.7 8.6 90 Indian Creek 9425 13.2 14.1 94 10.2 13.6 75 Kendall R.S. 7740 6.4 7.7 83 6.4 8.9 72 Loomis Park 8240 8.7 9.2 95 11.1 10.9 102 New Fork Lake 8340 6.7 6.7 100 -M 6.9 * Pocket Creek 9360 -M -M * 4.9 -M * Snider Basin 8060 8.0 7.3 110 8.5 8.9 96 Spring Creek Divide 9000 14.8 13.7 108 14.3 14.9 96 Triple Peak 8500 15.5 12.5 124 15.6 15.5 101 ----- ----- Basin Index (%) 100 85 LOWER GREEN RIVER Blacks Fork Jct 8869 5.5 -M * 8.3 -M * Buck Pasture 9632 11.8 -M * 11.8 -M * EF Blacks Fork GS 9360 10.1 -M * 6.6 -M * Hams Fork 7840 7.2 6.9 104 6.9 7.1 97 Hewinta 9500 7.6 5.3 143 10.1 8.3 122 Hickerson Park 9122 7.0 3.6 194 7.6 6.0 127 Hole-in-Rock 9168 7.4 3.8 195 7.6 5.6 136 Indian Creek 9425 13.2 14.1 94 10.2 13.6 75 Kelley R.S. 8180 10.0 8.7 115 10.4 11.2 93 Spirit Lk 10235 11.3 -M * 12.0 -M * Steel Creek Park 10158 11.3 8.4 135 12.0 9.6 125 ----- ----- Basin Index (%) 125 106 UPPER BEAR RIVER Bear River RS 8777 6.2 -M * 7.5 -M * Bug Lake 7987 13.1 9.9 132 12.2 12.1 101 Burts Miller Ranch 8000 5.3 -M * 5.0 -M * Chalk Creek #1 9171 13.0 13.1 99 12.2 15.2 80 Hayden Fork 9130 10.8 8.3 130 13.7 12.6 109 Kelley R.S. 8180 10.0 8.7 115 10.4 11.2 93 Lily Lake 9133 7.1 7.2 99 8.5 10.4 82 Monte Cristo 8932 18.2 15.3 119 16.5 15.8 104 Salt River Summit 7640 8.7 7.4 118 9.3 10.3 90 Spring Creek Divide 9000 14.8 13.7 108 14.3 14.9 96 ----- ----- Basin Index (%) 114 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.