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: FEBRUARY 26 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 15.6 13.3 117 17.7 17.0 104 Black Bear 8170 33.5 28.9 116 33.9 30.3 112 Blind Bull Sum 8650 17.4 17.5 99 14.3 15.7 91 Cottonwood Creek 7670 16.9 16.3 104 19.7 19.2 103 East Rim Divide 7930 8.8 7.8 113 9.1 9.4 97 Grand Targhee 9260 35.5 29.2 122 26.8 24.5 109 Granite Creek 6770 15.6 13.4 116 16.9 16.2 104 Grassy Lake 7265 27.1 25.6 106 30.4 29.1 104 Gros Ventre Summit 8750 7.8 9.5 82 9.3 9.9 94 Gunsight Pass 9820 10.5 10.4 101 12.5 10.6 118 Lewis Lake Divide 7850 27.3 25.1 109 29.0 28.4 102 Phillips Bench 8200 23.3 19.3 121 -M 22.4 * Salt River Summit 7640 10.5 10.4 101 12.5 13.3 94 Snake River Station 6920 16.7 14.0 119 21.4 18.4 116 Spring Creek Divide 9000 18.3 18.0 102 19.2 19.0 101 Thumb Divide 7980 14.0 11.8 119 14.8 14.4 103 Togwotee Pass 9580 19.7 17.4 113 20.1 19.1 105 Two Ocean Plateau 9240 23.5 21.3 110 19.1 21.4 89 Willow Creek 8080 22.6 21.9 103 26.4 26.4 100 Younts Peak 8350 -M 11.5 * -M 12.4 * ----- ----- Basin Index (%) 110 103 MADISON-GALLATIN Black Bear 8170 33.5 28.9 116 33.9 30.3 112 Canyon 7870 10.6 10.3 103 12.4 12.8 97 Madison Plateau 7750 21.8 17.5 125 21.6 20.8 104 West Yellowstone 6700 11.6 8.7 133 -M 11.4 * Whiskey Creek 6800 15.0 11.8 127 15.6 16.0 98 ----- ----- Basin Index (%) 120 105 YELLOWSTONE Beartooth Lake 9360 14.9 16.2 92 13.7 15.5 88 Burnt Mtn 5880 6.3 4.0 158 10.3 9.2 112 Canyon 7870 10.6 10.3 103 12.4 12.8 97 Cole Creek 7850 12.2 9.3 131 -M 8.9 * Evening Star 9200 20.3 18.9 107 22.8 21.8 105 Fisher Creek 9100 23.3 25.2 92 26.4 25.1 105 Northeast Entrance 7350 8.4 7.8 108 10.6 9.8 108 Parker Peak 9400 18.2 15.6 117 18.1 13.8 131 Sylvan Lake 8420 16.3 15.6 104 21.7 17.7 123 Thumb Divide 7980 14.0 11.8 119 14.8 14.4 103 Two Ocean Plateau 9240 23.5 21.3 110 19.1 21.4 89 White Mill 8700 16.5 18.0 92 14.4 18.7 77 Wolverine 7650 9.6 8.5 113 10.1 9.8 103 Younts Peak 8350 -M 11.5 * -M 12.4 * ----- ----- Basin Index (%) 106 102 WIND RIVER Burroughs Creek 8750 8.3 -M * 10.1 -M * Castle Creek 8400 3.5 -M * 4.9 -M * Cold Springs 9630 5.5 5.4 102 5.8 7.3 79 Deer Park 9700 13.1 10.7 122 14.1 14.9 95 Hobbs Park 10100 11.0 9.3 118 8.4 9.3 90 Kirwin 9550 7.9 6.8 116 8.1 8.6 94 Little Warm 9370 6.8 7.8 87 6.9 9.7 71 Owl Creek 8975 4.3 3.8 113 4.9 4.2 117 South Pass 9040 11.2 11.1 101 9.7 13.2 73 St. Lawrence Alt 8620 3.6 5.0 72 6.9 6.3 110 Togwotee Pass 9580 19.7 17.4 113 20.1 19.1 105 Townsend Creek 8700 7.4 6.3 117 8.2 8.5 96 ----- ----- Basin Index (%) 108 92 BIGHORN BASIN Bald Mtn. 9380 14.3 14.3 100 10.1 12.8 79 Bear Trap Meadow 8200 6.8 4.2 162 5.9 6.0 98 Bone Springs Div 9350 10.6 11.6 91 9.2 11.4 81 Grave Springs 8550 5.9 6.5 91 7.4 7.7 96 Kirwin 9550 7.9 6.8 116 8.1 8.6 94 Marquette 8760 6.0 -M * 7.3 -M * Middle Powder 7760 7.2 7.8 92 4.2 8.6 49 Owl Creek 8975 4.3 3.8 113 4.9 4.2 117 Powder River Pass 9480 8.3 7.7 108 7.7 9.4 82 Shell Creek 9580 11.2 11.2 100 9.6 10.3 93 Timber Creek 7950 3.0 3.2 94 4.8 5.1 94 ----- ----- Basin Index (%) 103 85 SHOSHONE RIVER Blackwater 9780 17.7 16.8 105 18.2 15.8 115 Evening Star 9200 20.3 18.9 107 22.8 21.8 105 Marquette 8760 6.0 -M * 7.3 -M * Sylvan Lake 8420 16.3 15.6 104 21.7 17.7 123 Sylvan Road 7120 9.5 9.1 104 12.6 13.7 92 Younts Peak 8350 -M 11.5 * -M 12.4 * ----- ----- Basin Index (%) 106 109 POWDER RIVER Bear Trap Meadow 8200 6.8 4.2 162 5.9 6.0 98 Cloud Peak Reservoir 9860 9.3 10.2 91 8.4 9.3 90 Grave Springs 8550 5.9 6.5 91 7.4 7.7 96 Hansen Sawmill 8360 4.5 4.6 98 5.9 5.9 100 Middle Powder 7760 7.2 7.8 92 4.2 8.6 49 Powder River Pass 9480 8.3 7.7 108 7.7 9.4 82 Soldier Park 8720 3.2 -M * 5.5 -M * ----- ----- Basin Index (%) 102 84 TONGUE RIVER Big Goose 7990 5.9 6.1 97 8.3 7.7 108 Bone Springs Div 9350 10.6 11.6 91 9.2 11.4 81 Burgess Junction 7880 6.5 8.0 81 7.1 8.8 81 Dome Lake 8880 6.6 8.4 79 6.3 9.8 64 Little Goose 8870 7.2 -M * 6.1 -M * Sucker Creek 8880 8.5 8.7 98 8.0 10.3 78 Tie Creek 6870 3.5 4.2 83 8.0 8.1 99 ----- ----- Basin Index (%) 89 84 BELLE FOURCHE Blind Park 6890 7.0 6.2 113 6.2 9.2 67 Cole Canyon 5910 5.2 4.9 106 9.2 7.0 131 ----- ----- Basin Index (%) 110 95 CHEYENNE RIVER BASIN Blind Park 6890 7.0 6.2 113 6.2 9.2 67 North Rapid Creek 6130 5.4 5.8 93 5.5 7.4 74 ----- ----- Basin Index (%) 103 70 UPPER N. PLATTE Arapaho Ridge 10960 18.4 16.1 114 19.0 17.3 110 Blackhall Mtn 9820 23.3 -M * 25.0 -M * Columbine 9160 21.1 19.3 109 21.6 20.0 108 Divide Peak 8880 15.1 15.3 99 17.9 16.5 108 Joe Wright 10120 14.9 16.0 93 22.3 19.6 114 Laprele Creek 8375 9.1 7.5 121 9.8 9.2 107 Med Bow 10500 27.7 -M * 25.8 -M * Never Summer 10280 15.8 15.8 100 13.9 -M * North French Creek 10130 21.8 20.6 106 22.7 20.7 110 Old Battle 10000 26.8 23.6 114 27.7 27.4 101 Rawah 9020 9.0 8.4 107 12.0 10.6 113 Sage Creek Basin 7850 14.0 10.5 133 13.8 11.5 120 Sand Lake 10050 20.7 20.7 100 17.3 18.6 93 South Brush Creek 8440 8.0 9.9 81 9.0 11.5 78 Tower 10500 38.8 35.6 109 34.3 31.2 110 Webber Springs 9250 19.0 18.3 104 23.0 20.8 111 Whiskey Park 8950 22.0 20.8 106 24.9 22.0 113 Willow Creek Pass 9540 10.8 9.2 117 12.6 10.1 125 Zirkel 9340 23.9 22.6 106 28.1 23.0 122 ----- ----- Basin Index (%) 107 109 SWEETWATER Deer Park 9700 13.1 10.7 122 14.1 14.9 95 Larsen Creek 9000 9.3 9.3 100 12.2 -M * South Pass 9040 11.2 11.1 101 9.7 13.2 73 ----- ----- Basin Index (%) 108 85 LOWER N. PLATTE Casper Mtn. 7900 10.7 9.8 109 9.1 10.9 83 Laprele Creek 8375 9.1 7.5 121 9.8 9.2 107 Reno Hill 8400 11.2 9.6 117 12.0 10.9 110 Windy Peak 7900 7.0 5.7 123 7.4 7.7 96 ----- ----- Basin Index (%) 117 99 LARAMIE RIVER Brooklyn Lake 10240 16.9 14.7 115 18.5 15.8 117 Cinnabar Park 9574 15.6 16.7 93 18.1 19.4 93 Crow Creek 8330 3.1 6.6 47 7.0 7.7 91 Deadman Hill 10220 13.9 12.3 113 13.0 12.5 104 Rawah 9020 9.0 8.4 107 12.0 10.6 113 Roach 9700 11.9 12.2 98 14.7 14.4 102 Windy Peak 7900 7.0 5.7 123 7.4 7.7 96 ----- ----- Basin Index (%) 101 103 S. PLATTE Black Mountain 8920 7.3 -M * 8.2 -M * Crow Creek 8330 3.1 6.6 47 7.0 7.7 91 Deadman Hill 10220 13.9 12.3 113 13.0 12.5 104 ----- ----- Basin Index (%) 90 99 LITTLE SNAKE RIVER Battle Mountain 7440 10.4 9.7 107 12.7 11.9 107 Divide Peak 8880 15.1 15.3 99 17.9 16.5 108 Elk River 8700 14.7 14.9 99 14.3 15.7 91 Little Snake River 8915 21.2 19.5 109 29.5 24.7 119 Old Battle 10000 26.8 23.6 114 27.7 27.4 101 Sage Creek Basin 7850 14.0 10.5 133 13.8 11.5 120 Sandstone RS 8150 12.9 10.3 125 14.1 14.9 95 Whiskey Park 8950 22.0 20.8 106 24.9 22.0 113 ----- ----- Basin Index (%) 110 107 UPPER GREEN RIVER Big Sandy Opening 9080 11.1 9.8 113 12.1 10.3 117 Blind Bull Sum 8650 17.4 17.5 99 14.3 15.7 91 East Rim Divide 7930 8.8 7.8 113 9.1 9.4 97 Elkhart Park G.S. 9400 9.9 9.2 108 10.7 10.3 104 Gros Ventre Summit 8750 7.8 9.5 82 9.3 9.9 94 Gunsight Pass 9820 10.5 10.4 101 12.5 10.6 118 Indian Creek 9425 16.9 18.3 92 13.8 17.5 79 Kendall R.S. 7740 9.1 9.6 95 9.7 11.5 84 Loomis Park 8240 12.9 11.5 112 13.9 13.8 101 New Fork Lake 8340 7.9 8.0 99 7.4 8.6 86 Pocket Creek 9360 11.5 -M * 12.6 -M * Snyder Basin 8060 9.6 9.4 102 11.3 11.3 100 Spring Creek Divide 9000 18.3 18.0 102 19.2 19.0 101 Triple Peak 8500 17.9 16.5 108 20.0 19.9 101 ----- ----- Basin Index (%) 102 97 LOWER GREEN RIVER Blacks Fork Jct 8869 6.7 -M * 9.6 -M * Buck Pasture 9632 11.8 -M * 14.5 -M * EF Blacks Fork GS 9360 9.1 -M * 7.7 -M * Hams Fork 7840 8.3 9.0 92 8.7 9.0 97 Hewinta 9500 7.7 7.6 101 10.8 10.6 102 Hickerson Park 9122 6.3 5.6 112 8.5 7.4 115 Hole-in-Rock 9168 4.8 5.4 89 7.9 6.9 114 Indian Creek 9425 16.9 18.3 92 13.8 17.5 79 Kelley R.S. 8180 11.2 11.7 96 11.8 14.4 82 Spirit Lk 10235 12.1 -M * 12.5 -M * Steel Creek Park 10158 11.5 11.2 103 13.5 12.1 112 ----- ----- Basin Index (%) 97 96 UPPER BEAR RIVER Bear River RS 8777 8.3 -M * 11.3 -M * Bug Lake 7987 17.5 14.4 122 18.1 15.2 119 Burts Miller Ranch 8000 5.2 -M * 6.7 -M * Chalk Creek #1 9171 18.8 17.8 106 23.1 19.1 121 Hayden Fork 9130 13.4 11.7 115 18.3 16.1 114 Kelley R.S. 8180 11.2 11.7 96 11.8 14.4 82 Lily Lake 9133 9.4 9.9 95 12.6 13.0 97 Monte Cristo 8932 23.9 20.2 118 23.8 20.2 118 Salt River Summit 7640 10.5 10.4 101 12.5 13.3 94 Spring Creek Divide 9000 18.3 18.0 102 19.2 19.0 101 ----- ----- Basin Index (%) 108 107 ----------------------------------------------------------------------------- -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.