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 WEDNESDAY: FEBRUARY 13 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 11.6 12.2 95 13.6 15.1 90 Black Bear 8170 24.2 26.7 91 25.1 26.9 93 Blind Bull Sum 8650 13.3 15.5 86 11.1 14.0 79 Cottonwood Creek 7670 14.1 14.3 99 16.9 17.3 98 East Rim Divide 7930 6.7 7.1 94 7.0 8.3 84 Grand Targhee 9260 30.3 25.7 118 23.4 22.8 103 Granite Creek 6770 11.6 11.9 97 13.2 14.7 90 Grassy Lake 7265 19.1 23.2 82 22.9 26.1 88 Gros Ventre Summit 8750 5.7 8.8 65 7.0 8.8 80 Gunsight Pass 9820 8.0 9.1 88 10.2 9.8 104 Lewis Lake Divide 7850 18.7 22.6 83 21.8 25.2 87 Phillips Bench 8200 17.3 17.4 99 20.1 19.9 101 Salt River Summit 7640 8.5 8.9 96 10.6 11.6 91 Snake River Station 6920 11.5 12.7 91 16.2 16.8 96 Spring Creek Divide 9000 14.8 16.1 92 16.1 16.8 96 Thumb Divide 7980 9.5 10.3 92 11.3 13.1 86 Togwotee Pass 9580 15.5 16.1 96 16.4 17.2 95 Two Ocean Plateau 9240 18.3 19.2 95 15.7 19.1 82 Willow Creek 8080 17.7 18.7 95 21.7 23.5 92 Younts Peak 8350 -M 10.5 * -M 11.4 * ----- ----- Basin Index (%) 93 92 MADISON-GALLATIN Black Bear 8170 24.2 26.7 91 25.1 26.9 93 Canyon 7870 8.3 9.0 92 10.0 11.7 85 Madison Plateau 7750 14.7 15.4 95 15.6 18.7 83 West Yellowstone 6700 8.3 7.5 111 10.0 10.5 95 Whiskey Creek 6800 10.0 10.4 96 10.6 14.3 74 ----- ----- Basin Index (%) 95 87 YELLOWSTONE Beartooth Lake 9360 11.5 15.1 76 10.4 14.0 74 Burnt Mtn 5880 5.5 3.2 172 9.9 8.5 116 Canyon 7870 8.3 9.0 92 10.0 11.7 85 Cole Creek 7850 11.6 8.8 132 -M 8.2 * Evening Star 9200 16.5 17.1 96 19.3 19.7 98 Fisher Creek 9100 18.1 22.5 80 21.7 22.5 96 Northeast Entrance 7350 6.9 7.2 96 9.4 9.0 104 Parker Peak 9400 14.8 13.9 106 15.5 12.4 125 Sylvan Lake 8420 13.5 13.7 99 18.8 16.0 118 Thumb Divide 7980 9.5 10.3 92 11.3 13.1 86 Two Ocean Plateau 9240 18.3 19.2 95 15.7 19.1 82 White Mill 8700 13.5 16.0 84 11.9 16.8 71 Wolverine 7650 7.4 7.7 96 8.1 8.9 91 Younts Peak 8350 -M 10.5 * -M 11.4 * ----- ----- Basin Index (%) 95 94 WIND RIVER Burroughs Creek 8750 5.0 -M * 6.7 -M * Castle Creek 8400 2.3 -M * 3.6 -M * Cold Springs 9630 4.9 4.9 100 5.2 6.6 79 Deer Park 9700 10.8 9.6 112 11.6 13.5 86 Hobbs Park 10100 9.5 8.3 114 7.4 8.3 89 Kirwin 9550 5.9 6.1 97 6.1 7.8 78 Little Warm 9370 5.2 7.0 74 5.4 8.8 61 Owl Creek 8975 4.0 3.2 125 4.6 3.8 121 South Pass 9040 9.0 9.9 91 8.2 11.8 69 St. Lawrence Alt 8620 3.5 4.4 80 6.2 5.7 109 Togwotee Pass 9580 15.5 16.1 96 16.4 17.2 95 Townsend Creek 8700 6.6 5.7 116 7.4 7.7 96 ----- ----- Basin Index (%) 100 86 BIGHORN BASIN Bald Mtn. 9380 12.9 12.3 105 8.7 11.6 75 Bear Trap Meadow 8200 5.9 3.7 159 5.3 5.5 96 Bone Springs Div 9350 9.5 10.5 90 8.2 10.4 79 Grave Springs 8550 5.4 5.4 100 6.8 7.0 97 Kirwin 9550 5.9 6.1 97 6.1 7.8 78 Marquette 8760 5.7 -M * 7.2 -M * Middle Powder 7760 6.9 6.9 100 4.2 7.9 53 Owl Creek 8975 4.0 3.2 125 4.6 3.8 121 Powder River Pass 9480 7.3 7.0 104 6.7 8.5 79 Shell Creek 9580 -M 9.9 * -M 9.5 * Timber Creek 7950 2.9 3.1 94 4.6 4.8 96 ----- ----- Basin Index (%) 104 82 SHOSHONE RIVER Blackwater 9780 14.5 15.3 95 15.5 14.3 108 Evening Star 9200 16.5 17.1 96 19.3 19.7 98 Marquette 8760 5.7 -M * 7.2 -M * Sylvan Lake 8420 13.5 13.7 99 18.8 16.0 118 Sylvan Road 7120 8.0 8.5 94 11.2 12.7 88 Younts Peak 8350 -M 10.5 * -M 11.4 * ----- ----- Basin Index (%) 96 103 POWDER RIVER Bear Trap Meadow 8200 5.9 3.7 159 5.3 5.5 96 Cloud Peak Reservoir 9860 9.0 9.3 97 8.0 8.5 94 Grave Springs 8550 5.4 5.4 100 6.8 7.0 97 Hansen Sawmill 8360 4.0 4.3 93 5.5 5.4 102 Middle Powder 7760 6.9 6.9 100 4.2 7.9 53 Powder River Pass 9480 7.3 7.0 104 6.7 8.5 79 Soldier Park 8720 3.6 -M * 5.2 -M * ----- ----- Basin Index (%) 105 85 TONGUE RIVER Big Goose 7990 5.5 5.5 100 7.4 7.1 104 Bone Springs Div 9350 9.5 10.5 90 8.2 10.4 79 Burgess Junction 7880 6.1 7.3 84 6.7 8.1 83 Dome Lake 8880 -M 7.6 * 5.9 9.0 66 Little Goose 8870 6.7 -M * 5.9 -M * Sucker Creek 8880 8.1 7.7 105 7.6 9.4 81 Tie Creek 6870 3.4 3.7 92 7.7 7.6 101 ----- ----- Basin Index (%) 94 84 BELLE FOURCHE Blind Park 6890 6.3 5.5 115 5.8 8.4 69 Cole Canyon 5910 4.9 4.2 117 8.7 6.5 134 ----- ----- Basin Index (%) 115 97 CHEYENNE RIVER BASIN Blind Park 6890 6.3 5.5 115 5.8 8.4 69 North Rapid Creek 6130 5.0 5.1 98 5.3 6.9 77 ----- ----- Basin Index (%) 107 73 UPPER N. PLATTE Arapaho Ridge 10960 15.8 14.4 110 16.7 15.5 108 Blackhall Mtn 9820 20.0 -M * 22.1 -M * Columbine 9160 18.0 16.7 108 19.0 18.0 106 Divide Peak 8880 13.4 13.8 97 16.1 15.0 107 Joe Wright 10120 13.7 13.9 99 20.7 17.5 118 Laprele Creek 8375 8.6 6.2 139 9.4 8.2 115 Med Bow 10500 24.8 -M * 23.7 -M * Never Summer 10280 14.3 13.6 105 12.9 -M * North French Creek 10130 19.7 18.3 108 21.0 18.5 114 Old Battle 10000 22.4 21.4 105 24.0 24.6 98 Rawah 9020 8.0 7.2 111 11.0 9.7 113 Sage Creek Basin 7850 12.4 9.2 135 12.0 10.7 112 Sand Lake 10050 18.8 18.0 104 15.9 16.5 96 South Brush Creek 8440 7.6 7.9 96 8.5 10.3 83 Tower 10500 32.4 31.4 103 29.2 28.0 104 Webber Springs 9250 15.5 16.0 97 19.8 18.5 107 Whiskey Park 8950 17.7 18.2 97 21.3 19.8 108 Willow Creek Pass 9540 9.5 8.3 114 11.5 9.0 128 Zirkel 9340 19.7 20.1 98 24.1 20.7 116 ----- ----- Basin Index (%) 105 108 SWEETWATER Deer Park 9700 10.8 9.6 112 11.6 13.5 86 Larsen Creek 9000 7.1 8.2 87 10.2 -M * South Pass 9040 9.0 9.9 91 8.2 11.8 69 ----- ----- Basin Index (%) 97 78 LOWER N. PLATTE Casper Mtn. 7900 10.2 8.4 121 8.5 9.8 87 Laprele Creek 8375 8.6 6.2 139 9.4 8.2 115 Reno Hill 8400 10.6 8.4 126 11.5 9.8 117 Windy Peak 7900 6.6 4.8 138 6.8 6.9 99 ----- ----- Basin Index (%) 129 104 LARAMIE RIVER Brooklyn Lake 10240 15.0 13.3 113 16.8 14.0 120 Cinnabar Park 9574 14.1 15.0 94 16.6 17.6 94 Crow Creek 8330 3.0 6.0 50 6.5 6.9 94 Deadman Hill 10220 12.6 11.1 114 12.0 11.2 107 Rawah 9020 8.0 7.2 111 11.0 9.7 113 Roach 9700 10.5 11.1 95 13.1 12.9 102 Windy Peak 7900 6.6 4.8 138 6.8 6.9 99 ----- ----- Basin Index (%) 102 105 S. PLATTE Black Mountain 8920 6.8 -M * 7.9 -M * Crow Creek 8330 3.0 6.0 50 6.5 6.9 94 Deadman Hill 10220 12.6 11.1 114 12.0 11.2 107 ----- ----- Basin Index (%) 91 102 LITTLE SNAKE RIVER Battle Mountain 7440 9.0 8.1 111 11.1 10.7 104 Divide Peak 8880 13.4 13.8 97 16.1 15.0 107 Elk River 8700 12.8 13.1 98 12.6 14.0 90 Little Snake River 8915 16.2 17.7 92 25.1 22.7 111 Old Battle 10000 22.4 21.4 105 24.0 24.6 98 Sage Creek Basin 7850 12.4 9.2 135 12.0 10.7 112 Sandstone RS 8150 10.5 9.4 112 12.1 13.2 92 Whiskey Park 8950 17.7 18.2 97 21.3 19.8 108 ----- ----- Basin Index (%) 103 103 UPPER GREEN RIVER Big Sandy Opening 9080 9.2 8.8 105 10.1 9.0 112 Blind Bull Sum 8650 13.3 15.5 86 11.1 14.0 79 East Rim Divide 7930 6.7 7.1 94 7.0 8.3 84 Elkhart Park G.S. 9400 7.7 8.2 94 8.9 9.2 97 Gros Ventre Summit 8750 5.7 8.8 65 7.0 8.8 80 Gunsight Pass 9820 8.0 9.1 88 10.2 9.8 104 Kendall R.S. 7740 7.1 8.7 82 7.7 10.1 76 Loomis Park 8240 9.6 10.4 92 10.8 12.2 89 New Fork Lake 8340 6.4 7.3 88 6.3 7.6 83 Pocket Creek 9360 9.9 -M * 10.8 -M * Snyder Basin 8060 7.8 8.7 90 9.7 10.0 97 Spring Creek Divide 9000 14.8 16.1 92 16.1 16.8 96 Triple Peak 8500 14.7 15.1 97 16.8 17.4 97 ----- ----- Basin Index (%) 90 91 LOWER GREEN RIVER Blacks Fork Jct 8869 6.0 -M * 8.8 -M * Buck Pasture 9632 10.8 -M * 13.6 -M * EF Blacks Fork GS 9360 8.5 -M * 7.0 -M * Hams Fork 7840 7.1 8.1 88 7.8 7.9 99 Hewinta 9500 6.7 6.7 100 9.9 9.5 104 Hickerson Park 9122 5.7 4.7 121 7.9 6.7 118 Hole-in-Rock 9168 4.2 4.5 93 7.2 6.2 116 Indian Creek 9425 13.8 16.1 86 11.4 15.4 74 Kelley R.S. 8180 9.3 10.0 93 10.1 12.6 80 Spirit Lk 10235 11.0 -M * 11.3 -M * Steel Creek Park 10158 -M 9.8 * -M 10.9 * ----- ----- Basin Index (%) 93 93 UPPER BEAR RIVER Bear River RS 8777 7.2 -M * 10.3 -M * Bug Lake 7987 13.2 12.7 104 15.4 13.5 114 Burts Miller Ranch 8000 4.4 -M * 6.2 -M * Chalk Creek #1 9171 16.0 15.4 104 20.3 17.1 119 Hayden Fork 9130 11.5 10.1 114 16.3 14.4 113 Kelley R.S. 8180 9.3 10.0 93 10.1 12.6 80 Lily Lake 9133 8.7 8.5 102 11.4 11.7 97 Monte Cristo 8932 19.6 18.0 109 19.5 17.7 110 Salt River Summit 7640 8.5 8.9 96 10.6 11.6 91 ----- ----- Basin Index (%) 104 105 ----------------------------------------------------------------------------- -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.