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 MONDAY: FEBRUARY 4 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 9.7 10.9 89 11.7 14.3 82 Black Bear 8170 20.8 23.5 89 22.0 25.4 87 Blind Bull Sum 8650 11.8 14.3 83 10.1 13.2 77 Cottonwood Creek 7670 12.4 13.4 93 15.1 16.3 93 East Rim Divide 7930 6.0 6.9 87 6.4 7.9 81 Grand Targhee 9260 27.1 24.0 113 21.5 21.1 102 Granite Creek 6770 9.8 10.9 90 11.6 13.9 83 Grassy Lake 7265 16.7 20.9 80 20.3 24.5 83 Gros Ventre Summit 8750 5.1 8.6 59 6.0 8.4 71 Gunsight Pass 9820 7.3 8.4 87 9.5 9.1 104 Lewis Lake Divide 7850 15.7 20.3 77 19.7 23.6 83 Phillips Bench 8200 13.5 16.0 84 16.9 18.7 90 Salt River Summit 7640 7.2 8.1 89 9.4 10.9 86 Snake River Station 6920 10.0 11.3 88 14.7 15.8 93 Spring Creek Divide 9000 13.6 14.9 91 15.1 15.8 96 Thumb Divide 7980 7.9 9.6 82 9.7 12.4 78 Togwotee Pass 9580 14.0 15.2 92 15.0 16.2 93 Two Ocean Plateau 9240 16.2 18.2 89 13.9 17.7 79 Willow Creek 8080 15.4 17.7 87 19.7 22.2 89 Younts Peak 8350 -M 9.9 * -M 10.7 * ----- ----- Basin Index (%) 88 87 MADISON-GALLATIN Black Bear 8170 20.8 23.5 89 22.0 25.4 87 Canyon 7870 7.4 8.4 88 9.0 11.0 82 Madison Plateau 7750 12.2 14.2 86 13.4 17.7 76 West Yellowstone 6700 7.0 7.1 99 -M 9.9 * Whiskey Creek 6800 8.1 9.7 84 8.6 13.5 64 ----- ----- Basin Index (%) 88 78 YELLOWSTONE Beartooth Lake 9360 10.6 14.2 75 9.4 13.2 71 Burnt Mtn 5880 5.3 2.5 212 9.1 8.1 112 Canyon 7870 7.4 8.4 88 9.0 11.0 82 Cole Creek 7850 11.4 8.6 133 -M 7.8 * Evening Star 9200 15.3 16.6 92 18.2 18.4 99 Fisher Creek 9100 16.1 21.1 76 19.9 21.3 93 Northeast Entrance 7350 6.3 6.6 95 8.7 8.5 102 Parker Peak 9400 14.0 13.3 105 14.8 11.6 128 Sylvan Lake 8420 12.6 13.3 95 17.8 15.2 117 Thumb Divide 7980 7.9 9.6 82 9.7 12.4 78 Two Ocean Plateau 9240 16.2 18.2 89 13.9 17.7 79 White Mill 8700 11.9 15.0 79 10.6 15.8 67 Wolverine 7650 6.7 7.2 93 7.8 8.4 93 Younts Peak 8350 -M 9.9 * -M 10.7 * ----- ----- Basin Index (%) 92 92 WIND RIVER Burroughs Creek 8750 4.7 -M * 6.4 -M * Castle Creek 8400 2.1 -M * 3.4 -M * Cold Springs 9630 4.3 4.7 91 4.4 6.3 70 Deer Park 9700 9.0 9.5 95 9.6 12.6 76 Hobbs Park 10100 7.8 8.0 98 6.1 8.0 76 Kirwin 9550 5.4 6.0 90 5.5 7.4 74 Little Warm 9370 4.7 6.5 72 5.5 8.4 65 Owl Creek 8975 3.8 3.1 123 4.4 3.6 122 South Pass 9040 7.9 9.5 83 6.9 11.2 62 St. Lawrence Alt 8620 2.8 4.2 67 5.2 5.4 96 Togwotee Pass 9580 14.0 15.2 92 15.0 16.2 93 Townsend Creek 8700 5.8 5.4 107 6.5 7.2 90 ----- ----- Basin Index (%) 91 80 BIGHORN BASIN Bald Mtn. 9380 12.3 11.0 112 8.1 10.9 74 Bear Trap Meadow 8200 5.7 3.5 163 5.1 5.2 98 Bone Springs Div 9350 8.9 9.9 90 7.5 9.8 77 Grave Springs 8550 5.2 5.0 104 6.1 6.6 92 Kirwin 9550 5.4 6.0 90 5.5 7.4 74 Marquette 8760 5.7 -M * 6.9 -M * Middle Powder 7760 6.8 6.4 106 4.2 7.6 55 Owl Creek 8975 3.8 3.1 123 4.4 3.6 122 Powder River Pass 9480 7.0 6.7 104 6.2 8.0 78 Shell Creek 9580 -M 9.2 * -M 9.1 * Timber Creek 7950 2.8 3.0 93 4.6 4.6 100 ----- ----- Basin Index (%) 106 81 SHOSHONE RIVER Blackwater 9780 13.6 14.9 91 14.5 13.5 107 Evening Star 9200 15.3 16.6 92 18.2 18.4 99 Marquette 8760 5.7 -M * 6.9 -M * Sylvan Lake 8420 12.6 13.3 95 17.8 15.2 117 Sylvan Road 7120 7.3 7.9 92 10.5 12.1 87 Younts Peak 8350 -M 9.9 * -M 10.7 * ----- ----- Basin Index (%) 93 103 POWDER RIVER Bear Trap Meadow 8200 5.7 3.5 163 5.1 5.2 98 Cloud Peak Reservoir 9860 8.5 8.5 100 7.7 8.0 96 Grave Springs 8550 5.2 5.0 104 6.1 6.6 92 Hansen Sawmill 8360 3.7 4.0 92 5.3 5.2 102 Middle Powder 7760 6.8 6.4 106 4.2 7.6 55 Powder River Pass 9480 7.0 6.7 104 6.2 8.0 78 Soldier Park 8720 3.1 -M * 5.1 -M * ----- ----- Basin Index (%) 108 85 TONGUE RIVER Big Goose 7990 5.4 5.0 108 7.2 6.7 107 Bone Springs Div 9350 8.9 9.9 90 7.5 9.8 77 Burgess Junction 7880 6.0 6.8 88 6.4 7.6 84 Dome Lake 8880 5.4 7.0 77 5.5 8.6 64 Little Goose 8870 6.5 -M * 5.8 -M * Sucker Creek 8880 7.8 7.2 108 7.5 8.9 84 Tie Creek 6870 3.0 3.4 88 6.4 7.2 89 ----- ----- Basin Index (%) 93 83 BELLE FOURCHE Blind Park 6890 5.9 4.9 120 5.6 7.9 71 Cole Canyon 5910 5.0 3.3 152 7.6 5.8 131 ----- ----- Basin Index (%) 133 96 CHEYENNE RIVER BASIN Blind Park 6890 5.9 4.9 120 5.6 7.9 71 North Rapid Creek 6130 4.8 4.4 109 5.0 6.4 78 ----- ----- Basin Index (%) 115 74 UPPER N. PLATTE Arapaho Ridge 10960 14.7 13.5 109 15.8 14.5 109 Blackhall Mtn 9820 18.6 -M * 20.9 -M * Columbine 9160 16.6 15.0 111 17.9 16.8 107 Divide Peak 8880 12.6 12.7 99 15.2 14.0 109 Joe Wright 10120 13.2 13.2 100 19.8 16.4 121 Laprele Creek 8375 8.3 5.5 151 9.1 7.7 118 Med Bow 10500 23.9 -M * 23.0 -M * Never Summer 10280 13.1 12.9 102 12.2 -M * North French Creek 10130 19.0 16.3 117 20.3 17.3 117 Old Battle 10000 21.2 19.6 108 23.0 22.9 100 Rawah 9020 6.9 6.4 108 9.9 9.2 108 Sage Creek Basin 7850 11.6 8.7 133 11.1 10.0 111 Sand Lake 10050 17.8 16.8 106 15.0 15.4 97 South Brush Creek 8440 7.2 7.5 96 8.2 9.7 85 Tower 10500 30.1 28.2 107 27.5 26.1 105 Webber Springs 9250 14.6 14.4 101 18.7 17.4 107 Whiskey Park 8950 16.7 16.6 101 20.6 18.3 113 Willow Creek Pass 9540 8.8 7.9 111 10.9 8.4 130 Zirkel 9340 17.5 19.0 92 22.0 19.6 112 ----- ----- Basin Index (%) 107 109 SWEETWATER Deer Park 9700 9.0 9.5 95 9.6 12.6 76 Larsen Creek 9000 5.9 7.5 79 9.0 -M * South Pass 9040 7.9 9.5 83 6.9 11.2 62 ----- ----- Basin Index (%) 86 69 LOWER N. PLATTE Casper Mtn. 7900 9.6 7.7 125 8.1 9.2 88 Laprele Creek 8375 8.3 5.5 151 9.1 7.7 118 Reno Hill 8400 10.1 7.8 129 11.1 9.2 121 Windy Peak 7900 6.6 4.3 153 6.6 6.5 102 ----- ----- Basin Index (%) 137 107 LARAMIE RIVER Brooklyn Lake 10240 14.1 12.1 117 15.8 13.2 120 Cinnabar Park 9574 13.0 13.5 96 15.6 16.5 95 Crow Creek 8330 2.7 5.7 47 6.1 6.5 94 Deadman Hill 10220 11.3 10.4 109 10.8 10.5 103 Rawah 9020 6.9 6.4 108 9.9 9.2 108 Roach 9700 9.2 10.2 90 11.7 12.1 97 Windy Peak 7900 6.6 4.3 153 6.6 6.5 102 ----- ----- Basin Index (%) 102 103 S. PLATTE Black Mountain 8920 6.0 -M * 7.2 -M * Crow Creek 8330 2.7 5.7 47 6.1 6.5 94 Deadman Hill 10220 11.3 10.4 109 10.8 10.5 103 ----- ----- Basin Index (%) 87 99 LITTLE SNAKE RIVER Battle Mountain 7440 8.3 7.2 115 10.6 9.9 107 Divide Peak 8880 12.6 12.7 99 15.2 14.0 109 Elk River 8700 12.0 11.7 103 11.7 13.1 89 Little Snake River 8915 15.4 16.0 96 24.3 21.3 114 Old Battle 10000 21.2 19.6 108 23.0 22.9 100 Sage Creek Basin 7850 11.6 8.7 133 11.1 10.0 111 Sandstone RS 8150 10.2 8.3 123 11.7 12.3 95 Whiskey Park 8950 16.7 16.6 101 20.6 18.3 113 ----- ----- Basin Index (%) 107 105 UPPER GREEN RIVER Big Sandy Opening 9080 7.7 8.5 91 8.7 8.5 102 Blind Bull Sum 8650 11.8 14.3 83 10.1 13.2 77 East Rim Divide 7930 6.0 6.9 87 6.4 7.9 81 Elkhart Park G.S. 9400 7.0 7.7 91 7.9 8.7 91 Gros Ventre Summit 8750 5.1 8.6 59 6.0 8.4 71 Gunsight Pass 9820 7.3 8.4 87 9.5 9.1 104 Kendall R.S. 7740 6.5 7.8 83 7.2 9.5 76 Loomis Park 8240 8.5 9.8 87 9.8 11.6 84 New Fork Lake 8340 5.7 6.8 84 5.4 7.2 75 Pocket Creek 9360 9.0 -M * 9.9 -M * Snyder Basin 8060 7.4 7.8 95 9.1 9.5 96 Spring Creek Divide 9000 13.6 14.9 91 15.1 15.8 96 Triple Peak 8500 12.8 13.5 95 15.1 16.5 92 ----- ----- Basin Index (%) 86 88 LOWER GREEN RIVER Blacks Fork Jct 8869 5.7 -M * 8.4 -M * Buck Pasture 9632 9.9 -M * 12.6 -M * EF Blacks Fork GS 9360 7.2 -M * 7.1 -M * Hams Fork 7840 6.6 7.4 89 7.4 7.4 100 Hewinta 9500 6.2 6.0 103 9.4 8.9 106 Hickerson Park 9122 4.8 3.9 123 7.3 6.3 116 Hole-in-Rock 9168 3.8 4.1 93 6.8 5.9 115 Indian Creek 9425 12.8 14.8 86 10.7 14.4 74 Kelley R.S. 8180 8.7 9.2 95 9.6 11.8 81 Spirit Lk 10235 9.0 -M * 8.4 -M * Steel Creek Park 10158 9.7 8.9 109 11.8 10.2 116 ----- ----- Basin Index (%) 97 97 UPPER BEAR RIVER Bear River RS 8777 6.4 -M * 9.5 -M * Bug Lake 7987 11.4 11.4 100 14.1 12.7 111 Burts Miller Ranch 8000 4.0 -M * 5.5 -M * Chalk Creek #1 9171 13.4 13.4 100 17.8 16.0 111 Hayden Fork 9130 10.0 8.8 114 14.9 13.5 110 Kelley R.S. 8180 8.7 9.2 95 9.6 11.8 81 Lily Lake 9133 8.0 7.5 107 10.6 11.0 96 Monte Cristo 8932 15.9 16.1 99 16.6 16.7 99 Salt River Summit 7640 7.2 8.1 89 9.4 10.9 86 ----- ----- Basin Index (%) 100 100 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.