Supercell over Laramie
WRDS/SCO may be working remotely so there could be a slight delay returning phone calls. Please email wrds@uwyo.edu if you are in need of information and we will respond as soon as possible

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 FRIDAY: FEBRUARY 12 , 2021 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 12.8 12.0 107 14.4 15.1 95 Blind Bull Sum 8650 14.3 15.4 93 10.2 13.9 73 Cottonwood Creek 7670 14.3 14.1 101 16.1 17.1 94 East Rim Divide 7930 6.5 7.1 92 6.4 8.2 78 Grand Targhee 9260 25.7 25.4 101 20.0 22.5 89 Granite Creek 6770 10.8 11.8 92 13.0 14.7 88 Grassy Lake 7265 20.4 22.9 89 22.7 25.9 88 Gros Ventre Summit 8750 6.2 8.8 70 7.8 8.8 89 Gunsight Pass 9820 8.5 9.0 94 8.1 9.7 84 Lewis Lake Divide 7850 19.3 22.4 86 21.6 25.0 86 Loomis Park 8240 8.9 10.4 86 10.3 12.2 84 Phillips Bench 8200 16.9 17.3 98 18.3 19.7 93 Salt River Summit 7640 7.9 8.8 90 9.1 11.5 79 Snake River Station 6920 11.1 12.5 89 14.7 16.7 88 Somsen Ranch 6800 8.1 9.5 85 9.5 11.9 80 Spring Creek Divide 9000 14.8 16.0 92 15.3 16.7 92 Thumb Divide 7980 9.9 10.2 97 10.4 13.0 80 Togwotee Pass 9580 16.4 16.0 102 18.0 17.1 105 Triple Peak 8500 15.7 14.9 105 16.7 17.3 97 Two Ocean Plateau 9240 18.2 19.1 95 10.8 18.7 58 Willow Creek 8080 16.3 18.5 88 17.5 23.3 75 Younts Peak 8350 10.1 10.3 98 11.2 11.3 99 ----- ----- Basin Index (%) 94 86 MADISON HEADWATERS IN WYOMING Black Bear 8170 21.2 26.4 80 21.5 26.8 80 Canyon 7870 8.7 8.9 98 9.6 11.6 83 Madison Plateau 7750 13.5 15.4 88 14.5 18.6 78 West Yellowstone 6700 7.3 7.4 99 9.3 10.4 89 Whiskey Creek 6800 9.3 10.3 90 12.2 14.2 86 ----- ----- Basin Index (%) 88 82 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 16.3 15.0 109 15.8 13.9 114 Canyon 7870 8.7 8.9 98 9.6 11.6 83 Evening Star 9200 20.6 17.0 121 22.3 19.5 114 Fisher Creek 9100 23.9 22.3 107 25.6 22.4 114 Monument Peak 8850 15.8 13.0 122 18.3 15.1 121 Northeast Entrance 7350 6.0 7.1 85 11.7 8.9 131 Parker Peak 9400 16.6 13.8 120 16.8 12.3 137 Sylvan Lake 8420 12.4 13.6 91 15.8 15.9 99 Thumb Divide 7980 9.9 10.2 97 10.4 13.0 80 Two Ocean Plateau 9240 18.2 19.1 95 10.8 18.7 58 White Mill 8700 19.7 15.9 124 19.2 16.7 115 Wolverine 7650 7.2 7.6 95 12.4 8.8 141 ----- ----- Basin Index (%) 107 107 WIND RIVER Burroughs Creek 8750 7.1 -M * 10.7 -M * Castle Creek 8400 3.8 -M * 5.6 -M * Cold Springs 9630 3.7 4.9 76 5.3 6.6 80 Deer Park 9700 5.9 9.5 62 8.4 13.5 62 Grave Springs 8550 3.5 5.3 66 4.6 7.0 66 Hobbs Park 10100 -M 8.2 * -M 8.3 * Kirwin 9550 6.6 6.1 108 7.6 7.7 99 Little Warm 9370 6.5 6.9 94 8.5 8.7 98 South Pass 9040 -M 9.9 * 6.9 11.7 59 St. Lawrence Alt 8620 .4 4.4 9 2.4 5.7 42 Togwotee Pass 9580 16.4 16.0 102 18.0 17.1 105 Townsend Creek 8700 3.2 5.7 56 4.7 7.6 62 ----- ----- Basin Index (%) 79 78 BIGHORN BASIN Bald Mtn. 9380 12.3 12.1 102 9.4 11.5 82 Bear Trap Meadow 8200 4.0 3.7 108 5.7 5.5 104 Bone Springs Div 9350 10.9 10.4 105 8.4 10.3 82 Grave Springs 8550 3.5 5.3 66 4.6 7.0 66 Kirwin 9550 6.6 6.1 108 7.6 7.7 99 Marquette 8760 2.6 -M * 3.6 -M * Middle Powder 7760 5.4 6.9 78 5.1 7.9 65 Owl Creek 8975 2.2 3.2 69 -M 3.8 * Powder River Pass 9480 8.0 7.0 114 6.7 8.4 80 Shell Creek 9580 10.6 9.8 108 8.6 9.5 91 Timber Creek 7950 1.4 3.1 45 2.4 4.8 50 ----- ----- Basin Index (%) 96 81 SHOSHONE RIVER Blackwater 9780 14.6 15.3 95 15.4 14.2 108 Evening Star 9200 20.6 17.0 121 22.3 19.5 114 Marquette 8760 2.6 -M * 3.6 -M * Sylvan Lake 8420 12.4 13.6 91 15.8 15.9 99 Sylvan Road 7120 7.7 8.4 92 -M 12.7 * Younts Peak 8350 10.1 10.3 98 11.2 11.3 99 ----- ----- Basin Index (%) 101 106 POWDER RIVER Bear Trap Meadow 8200 4.0 3.7 108 5.7 5.5 104 Cloud Peak Reservoir 9860 8.7 9.2 95 9.0 8.5 106 Grave Springs 8550 3.5 5.3 66 4.6 7.0 66 Hansen Sawmill 8360 4.0 4.2 95 4.7 5.4 87 Middle Powder 7760 5.4 6.9 78 5.1 7.9 65 Powder River Pass 9480 8.0 7.0 114 6.7 8.4 80 Soldier Park 8720 1.9 -M * 5.4 -M * ----- ----- Basin Index (%) 93 84 TONGUE RIVER Big Goose 7990 5.0 5.5 91 7.8 7.1 110 Bone Springs Div 9350 10.9 10.4 105 8.4 10.3 82 Burgess Junction 7880 7.1 7.2 99 9.2 8.0 115 Dome Lake 8880 7.4 7.5 99 8.9 8.9 100 Little Goose 8870 6.7 -M * 8.8 -M * Sucker Creek 8880 9.0 7.7 117 11.7 9.4 124 Tie Creek 6870 2.6 3.7 70 6.7 7.6 88 ----- ----- Basin Index (%) 100 103 BELLE FOURCHE Blind Park 6890 3.9 5.4 72 6.0 8.4 71 Cole Canyon 5910 2.3 4.1 56 4.8 6.4 75 North Rapid Creek 6130 4.2 5.1 82 5.9 6.8 87 ----- ----- Basin Index (%) 71 77 CHEYENNE RIVER BASIN Blind Park 6890 3.9 5.4 72 6.0 8.4 71 North Rapid Creek 6130 4.2 5.1 82 5.9 6.8 87 ----- ----- Basin Index (%) 77 78 UPPER N. PLATTE Arapaho Ridge 10960 13.7 14.3 96 13.5 15.4 88 Blackhall Mtn 9820 18.2 -M * 18.7 -M * Cinnabar Park 9574 11.5 14.7 78 13.3 17.3 77 Columbine 9160 14.3 16.5 87 13.5 17.8 76 Divide Peak 8880 10.0 13.7 73 11.7 14.8 79 Joe Wright 10120 12.2 13.8 88 15.1 17.4 87 Laprele Creek 8375 4.9 6.1 80 6.1 8.1 75 Med Bow 10500 25.9 -M * 22.6 -M * Never Summer 10280 11.8 13.5 87 8.6 -M * North French Creek 10130 18.1 18.0 101 18.5 18.2 102 Old Battle 10000 18.8 21.2 89 19.1 24.4 78 Rawah 9020 6.7 7.1 94 8.4 9.6 88 Sage Creek Basin 7850 7.4 9.1 81 7.2 10.6 68 Sand Lake 10050 18.3 17.8 103 16.7 16.3 102 South Brush Creek 8440 6.7 7.8 86 6.9 10.2 68 Tower 10500 21.9 31.1 70 22.5 27.7 81 Webber Springs 9250 13.7 15.8 87 14.2 18.3 78 Whiskey Park 8950 18.3 17.9 102 17.3 19.6 88 Willow Creek Pass 9540 7.2 8.2 88 6.4 9.0 71 Zirkel 9340 14.3 19.9 72 17.7 20.5 86 ----- ----- Basin Index (%) 86 83 SWEETWATER Deer Park 9700 5.9 9.5 62 8.4 13.5 62 Larsen Creek 9000 4.3 8.2 52 6.0 -M * South Pass 9040 -M 9.9 * 6.9 11.7 59 ----- ----- Basin Index (%) 58 61 LOWER N. PLATTE Casper Mtn. 7900 5.4 8.2 66 5.4 9.7 56 Laprele Creek 8375 4.9 6.1 80 6.1 8.1 75 Reno Hill 8400 6.0 8.4 71 7.8 9.7 80 Windy Peak 7900 2.8 4.6 61 4.7 6.8 69 ----- ----- Basin Index (%) 70 70 LARAMIE RIVER Brooklyn Lake 10240 15.1 13.1 115 16.9 13.9 122 Cinnabar Park 9574 11.5 14.7 78 13.3 17.3 77 Crow Creek 8330 1.1 5.9 19 4.8 6.8 71 Deadman Hill 10220 10.5 11.0 95 9.9 11.1 89 Rawah 9020 6.7 7.1 94 8.4 9.6 88 Roach 9700 8.7 10.9 80 9.6 12.8 75 Windy Peak 7900 2.8 4.6 61 4.7 6.8 69 ----- ----- Basin Index (%) 84 86 S. PLATTE Crow Creek 8330 1.1 5.9 19 4.8 6.8 71 ----- ----- Basin Index (%) 19 71 LITTLE SNAKE RIVER Battle Mountain 7440 6.2 8.0 78 -M 10.5 * Divide Peak 8880 10.0 13.7 73 11.7 14.8 79 Elk River 8700 10.6 12.9 82 7.8 13.9 56 Elkhead Divide 8780 9.8 -M * 10.9 -M * Little Snake River 8915 15.5 17.4 89 19.9 22.6 88 Old Battle 10000 18.8 21.2 89 19.1 24.4 78 Sage Creek Basin 7850 7.4 9.1 81 7.2 10.6 68 Sandstone RS 8150 7.7 9.2 84 9.7 13.0 75 Whiskey Park 8950 18.3 17.9 102 17.3 19.6 88 ----- ----- Basin Index (%) 86 78 UPPER GREEN RIVER Big Sandy Opening 9080 6.5 8.7 75 6.2 8.9 70 Blind Bull Sum 8650 14.3 15.4 93 10.2 13.9 73 East Rim Divide 7930 6.5 7.1 92 6.4 8.2 78 Elkhart Park G.S. 9400 6.7 8.1 83 5.7 9.1 63 Gros Ventre Summit 8750 6.2 8.8 70 7.8 8.8 89 Gunsight Pass 9820 8.5 9.0 94 8.1 9.7 84 Indian Creek 9425 12.7 16.0 79 11.5 15.2 76 Kendall R.S. 7740 8.3 8.6 97 9.5 10.0 95 Larsen Creek 9000 4.3 8.2 52 6.0 -M * Loomis Park 8240 8.9 10.4 86 10.3 12.2 84 New Fork Lake 8340 6.4 7.3 88 7.2 7.6 95 Pocket Creek 9360 -M -M * 5.3 -M * Snider Basin 8060 8.4 8.5 99 10.0 10.0 100 Spring Creek Divide 9000 14.8 16.0 92 15.3 16.7 92 Triple Peak 8500 15.7 14.9 105 16.7 17.3 97 ----- ----- Basin Index (%) 87 85 LOWER GREEN RIVER Blacks Fork Jct 8869 3.5 -M * 5.6 -M * Buck Pasture 9632 7.4 -M * 8.2 -M * EF Blacks Fork GS 9360 5.0 -M * 6.4 -M * Hams Fork 7840 7.7 8.0 96 7.0 7.9 89 Henrys Fork 10182 -M -M * 6.1 -M * Hewinta 9500 4.9 6.6 74 7.8 9.4 83 Hickerson Park 9122 3.9 4.5 87 4.9 6.6 74 Hole-in-Rock 9168 3.4 4.5 76 5.4 6.2 87 Indian Creek 9425 12.7 16.0 79 11.5 15.2 76 Kelley R.S. 8180 9.1 9.8 93 10.1 12.5 81 Spirit Lk 10235 6.9 -M * 7.6 -M * Steel Creek Park 10158 8.0 9.7 82 9.3 10.8 86 ----- ----- Basin Index (%) 84 82 UPPER BEAR RIVER Bear River RS 8777 4.2 -M * 6.1 -M * Bug Lake 7987 9.6 12.6 76 9.5 13.4 71 Burts Miller Ranch 8000 2.6 -M * 4.9 -M * Chalk Creek #1 9171 8.6 15.2 57 10.3 17.0 61 Dry Bread Pond 8302 8.5 13.5 63 9.1 13.5 67 Giveout 6930 5.5 6.8 81 7.4 8.9 83 Hayden Fork 9130 7.1 9.9 72 10.6 14.2 75 Kelley R.S. 8180 9.1 9.8 93 10.1 12.5 81 Lily Lake 9133 6.0 8.3 72 6.8 11.6 59 Monte Cristo 8932 12.0 17.8 67 11.7 17.6 66 Salt River Summit 7640 7.9 8.8 90 9.1 11.5 79 Spring Creek Divide 9000 14.8 16.0 92 15.3 16.7 92 Trial Lake 9992 10.1 14.8 68 10.2 16.0 64 ----- ----- Basin Index (%) 74 72 ----------------------------------------------------------------------------- -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.