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 SATURDAY: FEBRUARY 22 , 2020 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 12.9 13.1 98 13.4 16.6 81 Black Bear 8170 25.9 28.1 92 24.3 29.4 83 Blind Bull Sum 8650 20.6 17.2 120 12.1 15.3 79 Cottonwood Creek 7670 22.1 15.9 139 23.1 18.6 124 East Rim Divide 7930 9.9 7.6 130 7.9 9.1 87 Grand Targhee 9260 33.0 28.1 117 22.9 23.8 96 Granite Creek 6770 13.2 13.0 102 12.2 15.8 77 Grassy Lake 7265 25.1 24.9 101 25.3 28.3 89 Gros Ventre Summit 8750 8.7 9.3 94 8.6 9.6 90 Gunsight Pass 9820 10.1 10.1 100 10.1 10.4 97 Lewis Lake Divide 7850 19.7 24.6 80 22.9 27.6 83 Phillips Bench 8200 22.3 18.9 118 21.7 21.7 100 Salt River Summit 7640 12.3 10.1 122 12.6 12.8 98 Snake River Station 6920 13.4 13.7 98 15.7 17.9 88 Spring Creek Divide 9000 21.3 17.3 123 20.3 18.4 110 Thumb Divide 7980 10.9 11.3 96 11.1 14.0 79 Togwotee Pass 9580 21.1 17.0 124 20.1 18.5 109 Two Ocean Plateau 9240 22.3 20.6 108 17.5 20.7 85 Willow Creek 8080 28.4 21.0 135 28.0 25.5 110 Younts Peak 8350 13.3 11.2 119 11.2 12.2 92 ----- ----- Basin Index (%) 110 93 MADISON-GALLATIN Black Bear 8170 25.9 28.1 92 24.3 29.4 83 Canyon 7870 10.7 10.0 107 10.9 12.5 87 Madison Plateau 7750 16.1 17.0 95 13.9 20.1 69 West Yellowstone 6700 8.7 8.3 105 7.4 11.2 66 Whiskey Creek 6800 11.6 11.4 102 13.2 15.6 85 ----- ----- Basin Index (%) 98 78 YELLOWSTONE Beartooth Lake 9360 17.4 15.9 109 16.1 15.1 107 Burnt Mtn 5880 4.9 3.8 129 9.9 9.0 110 Canyon 7870 10.7 10.0 107 10.9 12.5 87 Cole Creek 7850 13.8 9.0 153 10.5 8.6 122 Evening Star 9200 21.6 18.5 117 23.5 21.2 111 Fisher Creek 9100 24.4 24.8 98 25.0 24.4 102 Northeast Entrance 7350 8.6 7.6 113 9.7 9.5 102 Parker Peak 9400 19.9 15.1 132 17.8 13.4 133 Sylvan Lake 8420 16.3 15.1 108 17.9 17.2 104 Thumb Divide 7980 10.9 11.3 96 11.1 14.0 79 Two Ocean Plateau 9240 22.3 20.6 108 17.5 20.7 85 White Mill 8700 19.9 17.5 114 16.4 18.2 90 Wolverine 7650 11.2 8.3 135 10.7 9.5 113 Younts Peak 8350 13.3 11.2 119 11.2 12.2 92 ----- ----- Basin Index (%) 114 101 WIND RIVER Burroughs Creek 8750 9.3 -M * 10.6 -M * Castle Creek 8400 4.1 -M * 4.7 -M * Cold Springs 9630 6.0 5.3 113 5.8 7.1 82 Deer Park 9700 9.5 10.3 92 8.8 14.4 61 Hobbs Park 10100 9.8 9.1 108 8.5 9.0 94 Kirwin 9550 8.7 6.5 134 7.5 8.4 89 Little Warm 9370 8.7 7.7 113 7.4 9.4 79 Owl Creek 8975 4.9 3.6 136 5.2 4.1 127 South Pass 9040 8.6 10.7 80 7.8 12.8 61 St. Lawrence Alt 8620 4.0 4.9 82 5.2 6.1 85 Togwotee Pass 9580 21.1 17.0 124 20.1 18.5 109 Townsend Creek 8700 7.1 6.1 116 7.3 8.3 88 ----- ----- Basin Index (%) 109 85 BIGHORN BASIN Bald Mtn. 9380 17.4 13.9 125 13.7 12.4 110 Bear Trap Meadow 8200 7.8 4.0 195 8.0 5.8 138 Bone Springs Div 9350 13.6 11.2 121 11.5 11.1 104 Grave Springs 8550 8.7 6.1 143 9.3 7.4 126 Kirwin 9550 8.7 6.5 134 7.5 8.4 89 Marquette 8760 5.5 -M * 6.8 -M * Middle Powder 7760 10.3 7.5 137 10.4 8.3 125 Owl Creek 8975 4.9 3.6 136 5.2 4.1 127 Powder River Pass 9480 10.0 7.5 133 10.1 9.1 111 Shell Creek 9580 11.8 10.7 110 11.4 10.0 114 Timber Creek 7950 4.8 3.1 155 5.4 4.9 110 ----- ----- Basin Index (%) 132 113 SHOSHONE RIVER Blackwater 9780 17.0 16.5 103 17.3 15.4 112 Evening Star 9200 21.6 18.5 117 23.5 21.2 111 Marquette 8760 5.5 -M * 6.8 -M * Sylvan Lake 8420 16.3 15.1 108 17.9 17.2 104 Sylvan Road 7120 9.8 8.8 111 13.6 13.4 101 Younts Peak 8350 13.3 11.2 119 11.2 12.2 92 ----- ----- Basin Index (%) 111 105 POWDER RIVER Bear Trap Meadow 8200 7.8 4.0 195 8.0 5.8 138 Cloud Peak Reservoir 9860 10.7 10.0 107 10.6 9.1 116 Grave Springs 8550 8.7 6.1 143 9.3 7.4 126 Hansen Sawmill 8360 5.7 4.4 130 6.8 5.7 119 Middle Powder 7760 10.3 7.5 137 10.4 8.3 125 Powder River Pass 9480 10.0 7.5 133 10.1 9.1 111 Soldier Park 8720 4.3 -M * 6.9 -M * ----- ----- Basin Index (%) 135 122 TONGUE RIVER Big Goose 7990 7.0 6.0 117 8.4 7.5 112 Bone Springs Div 9350 13.6 11.2 121 11.5 11.1 104 Burgess Junction 7880 9.0 7.8 115 10.2 8.6 119 Dome Lake 8880 9.7 8.2 118 7.8 9.5 82 Little Goose 8870 8.3 -M * 6.6 -M * Sucker Creek 8880 11.0 8.4 131 10.1 10.0 101 Tie Creek 6870 7.2 4.2 171 10.8 8.0 135 ----- ----- Basin Index (%) 126 107 BELLE FOURCHE Blind Park 6890 6.3 5.9 107 6.7 8.9 75 Cole Canyon 5910 1.8 4.7 38 -M 6.8 * ----- ----- Basin Index (%) 76 75 CHEYENNE RIVER BASIN Blind Park 6890 6.3 5.9 107 6.7 8.9 75 North Rapid Creek 6130 5.9 5.6 105 6.7 7.2 93 ----- ----- Basin Index (%) 106 83 UPPER N. PLATTE Arapaho Ridge 10960 17.9 15.6 115 17.3 16.8 103 Blackhall Mtn 9820 23.7 -M * 23.1 -M * Columbine 9160 25.7 18.6 138 23.8 19.4 123 Divide Peak 8880 17.4 14.9 117 18.2 16.2 112 Joe Wright 10120 16.7 15.4 108 21.3 19.0 112 Laprele Creek 8375 9.8 7.2 136 10.0 8.9 112 Med Bow 10500 36.2 -M * 29.3 -M * Never Summer 10280 16.0 15.0 107 11.8 -M * North French Creek 10130 27.8 19.8 140 26.8 20.1 133 Old Battle 10000 25.2 23.1 109 23.4 26.8 87 Rawah 9020 10.6 7.9 134 12.0 10.3 117 Sage Creek Basin 7850 13.1 10.4 126 10.6 11.3 94 Sand Lake 10050 23.8 19.9 120 21.9 18.0 122 South Brush Creek 8440 11.1 9.4 118 11.2 11.1 101 Tower 10500 37.3 34.7 107 31.9 30.4 105 Webber Springs 9250 17.6 17.8 99 19.1 20.2 95 Whiskey Park 8950 28.0 20.2 139 26.7 21.5 124 Willow Creek Pass 9540 10.9 9.0 121 10.2 9.8 104 Zirkel 9340 23.6 22.1 107 25.8 22.4 115 ----- ----- Basin Index (%) 118 110 SWEETWATER Deer Park 9700 9.5 10.3 92 8.8 14.4 61 Larsen Creek 9000 -M 9.0 * 5.9 -M * South Pass 9040 8.6 10.7 80 7.8 12.8 61 ----- ----- Basin Index (%) 86 61 LOWER N. PLATTE Casper Mtn. 7900 13.0 9.5 137 8.9 10.5 85 Laprele Creek 8375 9.8 7.2 136 10.0 8.9 112 Reno Hill 8400 13.3 9.3 143 13.6 10.5 130 Windy Peak 7900 7.9 5.5 144 6.7 7.5 89 ----- ----- Basin Index (%) 140 105 LARAMIE RIVER Brooklyn Lake 10240 22.4 14.5 154 21.6 15.3 141 Cinnabar Park 9574 20.2 16.3 124 20.7 19.0 109 Crow Creek 8330 7.1 6.6 108 9.0 7.5 120 Deadman Hill 10220 14.6 12.0 122 12.8 12.1 106 Rawah 9020 10.6 7.9 134 12.0 10.3 117 Roach 9700 11.7 12.0 98 11.5 14.0 82 Windy Peak 7900 7.9 5.5 144 6.7 7.5 89 ----- ----- Basin Index (%) 126 110 S. PLATTE Black Mountain 8920 8.8 -M * 10.5 -M * Crow Creek 8330 7.1 6.6 108 9.0 7.5 120 Deadman Hill 10220 14.6 12.0 122 12.8 12.1 106 ----- ----- Basin Index (%) 117 111 LITTLE SNAKE RIVER Battle Mountain 7440 12.2 9.1 134 12.4 11.6 107 Divide Peak 8880 17.4 14.9 117 18.2 16.2 112 Elk River 8700 17.6 14.4 122 14.9 15.3 97 Little Snake River 8915 23.0 19.0 121 27.3 24.3 112 Old Battle 10000 25.2 23.1 109 23.4 26.8 87 Sage Creek Basin 7850 13.1 10.4 126 10.6 11.3 94 Sandstone RS 8150 14.2 10.3 138 13.3 14.4 92 Whiskey Park 8950 28.0 20.2 139 26.7 21.5 124 ----- ----- Basin Index (%) 124 104 UPPER GREEN RIVER Big Sandy Opening 9080 7.2 9.5 76 6.1 9.9 62 Blind Bull Sum 8650 20.6 17.2 120 12.1 15.3 79 East Rim Divide 7930 9.9 7.6 130 7.9 9.1 87 Elkhart Park G.S. 9400 8.5 9.0 94 8.1 10.0 81 Gros Ventre Summit 8750 8.7 9.3 94 8.6 9.6 90 Gunsight Pass 9820 10.1 10.1 100 10.1 10.4 97 Indian Creek 9425 18.4 17.6 105 13.1 16.9 78 Kendall R.S. 7740 8.5 9.4 90 8.5 11.0 77 Loomis Park 8240 11.7 11.1 105 14.5 13.4 108 New Fork Lake 8340 8.7 7.8 112 -M 8.3 * Pocket Creek 9360 -M -M * 6.0 -M * Snider Basin 8060 11.4 9.2 124 11.9 11.0 108 Spring Creek Divide 9000 21.3 17.3 123 20.3 18.4 110 Triple Peak 8500 21.7 16.1 135 21.5 19.1 113 ----- ----- Basin Index (%) 110 93 LOWER GREEN RIVER Blacks Fork Jct 8869 6.2 -M * 9.6 -M * Buck Pasture 9632 14.2 -M * 14.1 -M * EF Blacks Fork GS 9360 11.8 -M * 7.7 -M * Hams Fork 7840 10.5 8.7 121 9.4 8.7 108 Hewinta 9500 8.6 7.4 116 11.5 10.3 112 Hickerson Park 9122 8.5 5.4 157 9.0 7.2 125 Hole-in-Rock 9168 8.5 5.2 163 8.6 6.8 126 Indian Creek 9425 18.4 17.6 105 13.1 16.9 78 Kelley R.S. 8180 12.5 11.2 112 13.2 13.9 95 Spirit Lk 10235 13.0 -M * 13.8 -M * Steel Creek Park 10158 12.3 10.8 114 14.4 11.8 122 ----- ----- Basin Index (%) 120 105 UPPER BEAR RIVER Bear River RS 8777 7.3 -M * 8.5 -M * Bug Lake 7987 16.1 14.0 115 14.7 14.8 99 Burts Miller Ranch 8000 5.2 -M * 5.6 -M * Chalk Creek #1 9171 15.9 17.2 92 14.9 18.6 80 Hayden Fork 9130 13.1 11.4 115 16.3 15.6 104 Kelley R.S. 8180 12.5 11.2 112 13.2 13.9 95 Lily Lake 9133 9.3 9.7 96 9.6 12.7 76 Monte Cristo 8932 22.6 19.7 115 20.0 19.5 103 Salt River Summit 7640 12.3 10.1 122 12.6 12.8 98 Spring Creek Divide 9000 21.3 17.3 123 20.3 18.4 110 ----- ----- Basin Index (%) 111 96 ----------------------------------------------------------------------------- -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.