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 FRIDAY: FEBRUARY 15 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 13.4 12.6 106 15.3 15.5 99 Black Bear 8170 27.2 27.1 100 27.6 27.6 100 Blind Bull Sum 8650 14.9 15.9 94 12.8 14.4 89 Cottonwood Creek 7670 15.4 14.6 105 18.3 17.6 104 East Rim Divide 7930 7.9 7.3 108 8.1 8.5 95 Grand Targhee 9260 32.1 26.4 122 24.8 23.0 108 Granite Creek 6770 13.6 12.2 111 15.0 15.0 100 Grassy Lake 7265 22.2 23.8 93 25.8 26.8 96 Gros Ventre Summit 8750 6.7 8.9 75 7.9 9.0 88 Gunsight Pass 9820 9.3 9.4 99 11.4 10.0 114 Lewis Lake Divide 7850 22.1 23.0 96 25.4 25.9 98 Phillips Bench 8200 20.0 17.7 113 21.6 20.3 106 Salt River Summit 7640 9.5 9.2 103 11.5 11.9 97 Snake River Station 6920 13.4 13.0 103 18.1 17.1 106 Spring Creek Divide 9000 16.5 16.3 101 17.6 17.3 102 Thumb Divide 7980 11.5 10.6 108 12.8 13.3 96 Togwotee Pass 9580 17.1 16.4 104 17.8 17.6 101 Two Ocean Plateau 9240 20.2 19.4 104 17.1 19.4 88 Willow Creek 8080 19.5 19.3 101 23.5 24.1 98 Younts Peak 8350 -M 10.7 * -M 11.6 * ----- ----- Basin Index (%) 103 99 MADISON-GALLATIN Black Bear 8170 27.2 27.1 100 27.6 27.6 100 Canyon 7870 9.1 9.3 98 10.8 11.9 91 Madison Plateau 7750 16.8 15.6 108 16.9 19.0 89 West Yellowstone 6700 9.5 7.6 125 -M 10.7 * Whiskey Creek 6800 11.7 10.7 109 12.2 14.6 84 ----- ----- Basin Index (%) 106 92 YELLOWSTONE Beartooth Lake 9360 12.4 15.3 81 11.4 14.3 80 Burnt Mtn 5880 5.5 3.4 162 9.8 8.6 114 Canyon 7870 9.1 9.3 98 10.8 11.9 91 Cole Creek 7850 11.6 8.8 132 -M 8.3 * Evening Star 9200 17.8 17.5 102 20.6 20.1 102 Fisher Creek 9100 19.7 23.0 86 23.2 23.0 101 Northeast Entrance 7350 7.5 7.3 103 9.8 9.1 108 Parker Peak 9400 16.0 14.0 114 16.6 12.7 131 Sylvan Lake 8420 14.2 14.0 101 19.6 16.3 120 Thumb Divide 7980 11.5 10.6 108 12.8 13.3 96 Two Ocean Plateau 9240 20.2 19.4 104 17.1 19.4 88 White Mill 8700 14.8 16.2 91 13.0 17.2 76 Wolverine 7650 8.1 7.8 104 8.7 9.1 96 Younts Peak 8350 -M 10.7 * -M 11.6 * ----- ----- Basin Index (%) 101 99 WIND RIVER Burroughs Creek 8750 6.6 -M * 8.2 -M * Castle Creek 8400 3.1 -M * 4.3 -M * Cold Springs 9630 5.2 5.1 102 5.3 6.7 79 Deer Park 9700 12.1 9.7 125 12.9 13.9 93 Hobbs Park 10100 10.3 8.5 121 7.6 8.6 88 Kirwin 9550 6.8 6.2 110 7.0 7.9 89 Little Warm 9370 5.9 7.2 82 6.4 8.9 72 Owl Creek 8975 4.1 3.3 124 4.8 3.9 123 South Pass 9040 10.3 10.1 102 8.8 12.1 73 St. Lawrence Alt 8620 3.5 4.5 78 6.4 5.8 110 Togwotee Pass 9580 17.1 16.4 104 17.8 17.6 101 Townsend Creek 8700 6.9 5.8 119 7.5 7.8 96 ----- ----- Basin Index (%) 107 91 BIGHORN BASIN Bald Mtn. 9380 13.1 12.8 102 8.9 11.8 75 Bear Trap Meadow 8200 6.0 3.8 158 5.5 5.6 98 Bone Springs Div 9350 9.8 10.7 92 8.4 10.6 79 Grave Springs 8550 5.6 5.5 102 7.4 7.1 104 Kirwin 9550 6.8 6.2 110 7.0 7.9 89 Marquette 8760 5.8 -M * 7.3 -M * Middle Powder 7760 6.9 7.1 97 4.2 8.0 52 Owl Creek 8975 4.1 3.3 124 4.8 3.9 123 Powder River Pass 9480 7.6 7.1 107 7.0 8.6 81 Shell Creek 9580 10.4 10.1 103 8.8 9.6 92 Timber Creek 7950 3.0 3.1 97 4.7 4.8 98 ----- ----- Basin Index (%) 105 86 SHOSHONE RIVER Blackwater 9780 15.6 15.5 101 16.5 14.6 113 Evening Star 9200 17.8 17.5 102 20.6 20.1 102 Marquette 8760 5.8 -M * 7.3 -M * Sylvan Lake 8420 14.2 14.0 101 19.6 16.3 120 Sylvan Road 7120 8.4 8.6 98 11.3 12.9 88 Younts Peak 8350 -M 10.7 * -M 11.6 * ----- ----- Basin Index (%) 101 106 POWDER RIVER Bear Trap Meadow 8200 6.0 3.8 158 5.5 5.6 98 Cloud Peak Reservoir 9860 9.2 9.5 97 8.2 8.6 95 Grave Springs 8550 5.6 5.5 102 7.4 7.1 104 Hansen Sawmill 8360 4.2 4.3 98 5.7 5.5 104 Middle Powder 7760 6.9 7.1 97 4.2 8.0 52 Powder River Pass 9480 7.6 7.1 107 7.0 8.6 81 Soldier Park 8720 3.3 -M * 5.4 -M * ----- ----- Basin Index (%) 106 88 TONGUE RIVER Big Goose 7990 5.6 5.6 100 7.5 7.2 104 Bone Springs Div 9350 9.8 10.7 92 8.4 10.6 79 Burgess Junction 7880 6.2 7.4 84 6.8 8.2 83 Dome Lake 8880 6.0 7.7 78 6.0 9.1 66 Little Goose 8870 6.9 -M * 5.9 -M * Sucker Creek 8880 8.2 7.9 104 7.9 9.5 83 Tie Creek 6870 3.3 3.8 87 7.6 7.7 99 ----- ----- Basin Index (%) 91 85 BELLE FOURCHE Blind Park 6890 6.3 5.6 112 5.8 8.5 68 Cole Canyon 5910 4.9 4.4 111 8.6 6.5 132 ----- ----- Basin Index (%) 112 96 CHEYENNE RIVER BASIN Blind Park 6890 6.3 5.6 112 5.8 8.5 68 North Rapid Creek 6130 5.0 5.3 94 5.2 6.9 75 ----- ----- Basin Index (%) 104 71 UPPER N. PLATTE Arapaho Ridge 10960 17.5 14.6 120 18.3 16.0 114 Blackhall Mtn 9820 21.6 -M * 23.5 -M * Columbine 9160 19.9 17.1 116 20.7 18.4 112 Divide Peak 8880 14.2 13.9 102 16.7 15.3 109 Joe Wright 10120 14.2 14.4 99 21.3 17.9 119 Laprele Creek 8375 8.8 6.4 138 9.5 8.4 113 Med Bow 10500 25.5 -M * 24.3 -M * Never Summer 10280 15.0 13.9 108 13.2 -M * North French Creek 10130 20.1 18.9 106 21.2 18.9 112 Old Battle 10000 24.7 21.7 114 26.0 25.3 103 Rawah 9020 8.3 7.3 114 11.4 9.8 116 Sage Creek Basin 7850 13.5 9.5 142 13.1 10.9 120 Sand Lake 10050 19.3 18.3 105 16.1 16.9 95 South Brush Creek 8440 7.6 8.2 93 8.7 10.5 83 Tower 10500 36.2 32.0 113 32.3 28.6 113 Webber Springs 9250 17.5 16.4 107 -M 19.0 * Whiskey Park 8950 20.3 18.8 108 23.5 20.3 116 Willow Creek Pass 9540 10.0 8.4 119 11.9 9.3 128 Zirkel 9340 22.2 20.6 108 26.2 21.3 123 ----- ----- Basin Index (%) 111 112 SWEETWATER Deer Park 9700 12.1 9.7 125 12.9 13.9 93 Larsen Creek 9000 8.5 8.4 101 11.4 -M * South Pass 9040 10.3 10.1 102 8.8 12.1 73 ----- ----- Basin Index (%) 110 83 LOWER N. PLATTE Casper Mtn. 7900 10.2 8.7 117 8.7 10.0 87 Laprele Creek 8375 8.8 6.4 138 9.5 8.4 113 Reno Hill 8400 10.7 8.6 124 11.6 10.0 116 Windy Peak 7900 6.8 5.0 136 7.0 7.1 99 ----- ----- Basin Index (%) 127 104 LARAMIE RIVER Brooklyn Lake 10240 15.9 13.6 117 17.2 14.4 119 Cinnabar Park 9574 14.5 15.6 93 16.8 18.0 93 Crow Creek 8330 2.8 6.2 45 6.5 7.1 92 Deadman Hill 10220 13.1 11.3 116 12.3 11.4 108 Rawah 9020 8.3 7.3 114 11.4 9.8 116 Roach 9700 11.1 11.3 98 13.8 13.2 105 Windy Peak 7900 6.8 5.0 136 7.0 7.1 99 ----- ----- Basin Index (%) 103 105 S. PLATTE Black Mountain 8920 7.0 -M * 7.9 -M * Crow Creek 8330 2.8 6.2 45 6.5 7.1 92 Deadman Hill 10220 13.1 11.3 116 12.3 11.4 108 ----- ----- Basin Index (%) 91 102 LITTLE SNAKE RIVER Battle Mountain 7440 9.7 8.4 115 -M 11.0 * Divide Peak 8880 14.2 13.9 102 16.7 15.3 109 Elk River 8700 13.9 13.5 103 13.0 14.4 90 Little Snake River 8915 19.4 18.0 108 27.6 23.0 120 Old Battle 10000 24.7 21.7 114 26.0 25.3 103 Sage Creek Basin 7850 13.5 9.5 142 13.1 10.9 120 Sandstone RS 8150 11.9 9.6 124 13.0 13.5 96 Whiskey Park 8950 20.3 18.8 108 23.5 20.3 116 ----- ----- Basin Index (%) 113 108 UPPER GREEN RIVER Big Sandy Opening 9080 10.1 8.9 113 11.1 9.3 119 Blind Bull Sum 8650 14.9 15.9 94 12.8 14.4 89 East Rim Divide 7930 7.9 7.3 108 8.1 8.5 95 Elkhart Park G.S. 9400 8.8 8.4 105 9.8 9.3 105 Gros Ventre Summit 8750 6.7 8.9 75 7.9 9.0 88 Gunsight Pass 9820 9.3 9.4 99 11.4 10.0 114 Indian Creek 9425 15.3 16.3 94 12.5 15.8 79 Kendall R.S. 7740 8.3 8.8 94 8.9 10.3 86 Loomis Park 8240 11.3 10.5 108 12.4 12.5 99 New Fork Lake 8340 7.3 7.4 99 6.7 7.8 86 Pocket Creek 9360 10.7 -M * 11.6 -M * Snyder Basin 8060 8.7 8.9 98 10.4 10.3 101 Spring Creek Divide 9000 16.5 16.3 101 17.6 17.3 102 Triple Peak 8500 16.1 15.3 105 18.2 17.9 102 ----- ----- Basin Index (%) 99 97 LOWER GREEN RIVER Blacks Fork Jct 8869 6.4 -M * 9.1 -M * Buck Pasture 9632 11.5 -M * 14.1 -M * EF Blacks Fork GS 9360 8.5 -M * 8.0 -M * Hams Fork 7840 7.8 8.2 95 8.3 8.2 101 Hewinta 9500 7.1 6.8 104 10.2 9.7 105 Hickerson Park 9122 5.8 4.9 118 8.0 6.8 118 Hole-in-Rock 9168 4.3 4.7 91 7.3 6.4 114 Indian Creek 9425 15.3 16.3 94 12.5 15.8 79 Kelley R.S. 8180 10.3 10.3 100 10.9 13.0 84 Spirit Lk 10235 11.4 -M * 11.6 -M * Steel Creek Park 10158 10.7 10.1 106 12.8 11.1 115 ----- ----- Basin Index (%) 100 99 UPPER BEAR RIVER Bear River RS 8777 7.8 -M * 10.7 -M * Bug Lake 7987 15.4 13.0 118 17.1 13.8 124 Burts Miller Ranch 8000 4.8 -M * 6.2 -M * Chalk Creek #1 9171 17.8 15.7 113 21.4 17.5 122 Hayden Fork 9130 12.6 10.6 119 17.4 14.7 118 Kelley R.S. 8180 10.3 10.3 100 10.9 13.0 84 Lily Lake 9133 8.9 8.7 102 11.8 11.9 99 Monte Cristo 8932 22.0 18.4 120 20.3 18.2 112 Salt River Summit 7640 9.5 9.2 103 11.5 11.9 97 Spring Creek Divide 9000 16.5 16.3 101 17.6 17.3 102 ----- ----- Basin Index (%) 111 108 ----------------------------------------------------------------------------- -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.