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 THURSDAY: AUGUST 29 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 .0 .0 * 29.2 30.2 97 Black Bear 8170 .0 .0 * 58.9 52.7 112 Blind Bull Sum 8650 .0 .0 * 27.4 28.9 95 Cottonwood Creek 7670 .0 .0 * 37.3 36.7 102 East Rim Divide 7930 .0 .0 * 19.1 18.5 103 Grand Targhee 9260 .0 .0 * 47.0 45.5 103 Granite Creek 6770 -M .0 * 30.6 28.0 109 Grassy Lake 7265 .0 .0 * -M 49.7 * Gros Ventre Summit 8750 .0 .0 * 20.2 21.6 94 Gunsight Pass 9820 .1 .0 * 25.8 23.5 110 Lewis Lake Divide 7850 .0 .0 * 49.6 48.5 102 Phillips Bench 8200 .1 .0 * 43.0 39.3 109 Salt River Summit 7640 .0 .0 * 26.2 24.9 105 Snake River Station 6920 .0 .0 * 35.2 33.1 106 Spring Creek Divide 9000 .0 .0 * 32.4 33.7 96 Thumb Divide 7980 .0 .0 * 27.0 28.2 96 Togwotee Pass 9580 .0 .0 * 34.9 36.4 96 Two Ocean Plateau 9240 .2 .0 * 35.8 40.8 88 Willow Creek 8080 .1 .0 * 48.7 49.0 99 Younts Peak 8350 .0 .0 * 25.9 26.8 97 ----- ----- Basin Index (%) * 101 MADISON-GALLATIN Black Bear 8170 .0 .0 * 58.9 52.7 112 Canyon 7870 .0 .0 * 24.7 26.1 95 Madison Plateau 7750 .1 .0 * 42.1 38.7 109 West Yellowstone 6700 .2 .0 * 25.4 22.8 111 Whiskey Creek 6800 .0 .0 * 32.5 31.1 105 ----- ----- Basin Index (%) * 107 YELLOWSTONE Beartooth Lake 9360 .0 .0 * 33.8 31.1 109 Burnt Mtn 5880 .0 .0 * 33.1 27.5 120 Canyon 7870 .0 .0 * 24.7 26.1 95 Cole Creek 7850 .0 .0 * -M 28.5 * Evening Star 9200 .0 .0 * 45.5 42.2 108 Fisher Creek 9100 -M .0 * 53.9 48.9 110 Northeast Entrance 7350 .0 .0 * 26.2 23.1 113 Parker Peak 9400 .0 .0 * 37.8 29.9 126 Sylvan Lake 8420 .0 .0 * 40.4 35.8 113 Thumb Divide 7980 .0 .0 * 27.0 28.2 96 Two Ocean Plateau 9240 .2 .0 * 35.8 40.8 88 White Mill 8700 .0 .0 * 31.3 38.2 82 Wolverine 7650 .0 .0 * 23.4 21.8 107 Younts Peak 8350 .0 .0 * 25.9 26.8 97 ----- ----- Basin Index (%) * 104 WIND RIVER Burroughs Creek 8750 .0 -M * 24.9 -M * Castle Creek 8400 .2 -M * 15.0 -M * Cold Springs 9630 .0 .0 * 18.2 20.0 91 Deer Park 9700 .0 .0 * 28.3 32.7 87 Hobbs Park 10100 .0 .0 * 26.7 25.8 103 Kirwin 9550 .0 .0 * 23.5 23.8 99 Little Warm 9370 .0 .0 * 15.6 23.6 66 Owl Creek 8975 .0 .0 * 21.4 15.5 138 South Pass 9040 .0 .0 * 22.0 27.8 79 St. Lawrence Alt 8620 -M .0 * -M 18.8 * Togwotee Pass 9580 .0 .0 * 34.9 36.4 96 Townsend Creek 8700 .0 .0 * 23.5 22.6 104 ----- ----- Basin Index (%) * 94 BIGHORN BASIN Bald Mtn. 9380 .1 .0 * 28.7 29.6 97 Bear Trap Meadow 8200 .0 .0 * 19.8 18.8 105 Bone Springs Div 9350 .0 .0 * 24.6 28.7 86 Grave Springs 8550 .2 .0 * 20.8 21.1 99 Kirwin 9550 .0 .0 * 23.5 23.8 99 Marquette 8760 .0 -M * 30.5 -M * Middle Powder 7760 .0 .0 * 25.0 22.6 111 Owl Creek 8975 .0 .0 * 21.4 15.5 138 Powder River Pass 9480 .0 .0 * 20.0 24.5 82 Shell Creek 9580 .0 .0 * 24.8 25.8 96 Timber Creek 7950 .0 .0 * 23.5 19.0 124 ----- ----- Basin Index (%) * 101 SHOSHONE RIVER Blackwater 9780 .0 .0 * -M 33.7 * Evening Star 9200 .0 .0 * 45.5 42.2 108 Marquette 8760 .0 -M * 30.5 -M * Sylvan Lake 8420 .0 .0 * 40.4 35.8 113 Sylvan Road 7120 .0 .0 * 25.6 26.5 97 Younts Peak 8350 .0 .0 * 25.9 26.8 97 ----- ----- Basin Index (%) * 105 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * 19.8 18.8 105 Cloud Peak Reservoir 9860 .0 .0 * 27.6 27.8 99 Grave Springs 8550 .2 .0 * 20.8 21.1 99 Hansen Sawmill 8360 .0 .0 * 22.6 20.0 113 Middle Powder 7760 .0 .0 * 25.0 22.6 111 Powder River Pass 9480 .0 .0 * 20.0 24.5 82 Soldier Park 8720 .0 -M * 20.3 -M * ----- ----- Basin Index (%) * 101 TONGUE RIVER Big Goose 7990 .0 .0 * 26.9 22.3 121 Bone Springs Div 9350 .0 .0 * 24.6 28.7 86 Burgess Junction 7880 .0 .0 * 23.0 23.5 98 Dome Lake 8880 .0 .0 * 27.5 25.8 107 Little Goose 8870 .0 -M * 20.9 -M * Sucker Creek 8880 .0 .0 * 29.8 27.5 108 Tie Creek 6870 -M .0 * -M 24.6 * ----- ----- Basin Index (%) * 103 BELLE FOURCHE Blind Park 6890 .0 .0 * 22.6 25.7 88 Cole Canyon 5910 .0 .0 * 32.3 23.5 137 ----- ----- Basin Index (%) * 112 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 22.6 25.7 88 North Rapid Creek 6130 -M .0 * 22.3 25.2 88 ----- ----- Basin Index (%) * 88 UPPER N. PLATTE Arapaho Ridge 10960 .0 .0 * 40.8 35.7 114 Blackhall Mtn 9820 -M -M * 47.8 -M * Columbine 9160 .1 .0 * 42.5 36.0 118 Divide Peak 8880 .0 .0 * 33.4 31.5 106 Joe Wright 10120 .0 .0 * 47.1 41.2 114 Laprele Creek 8375 .0 .0 * 23.1 22.6 102 Med Bow 10500 .0 -M * 51.0 -M * Never Summer 10280 .1 .0 * 32.2 -M * North French Creek 10130 .1 .0 * 44.4 40.8 109 Old Battle 10000 .0 .0 * 49.2 48.7 101 Rawah 9020 .0 .0 * 29.3 25.0 117 Sage Creek Basin 7850 .1 .0 * 23.4 21.2 110 Sand Lake 10050 .0 .0 * 39.3 38.7 102 South Brush Creek 8440 .0 .0 * 21.0 25.4 83 Tower 10500 .0 .0 * 66.9 55.3 121 Webber Springs 9250 .0 .0 * 43.0 37.9 113 Whiskey Park 8950 .0 .0 * 45.2 39.5 114 Willow Creek Pass 9540 .1 .0 * 26.7 24.0 111 Zirkel 9340 .1 .0 * 50.8 40.2 126 ----- ----- Basin Index (%) * 111 SWEETWATER Deer Park 9700 .0 .0 * 28.3 32.7 87 Larsen Creek 9000 .0 .0 * 21.0 -M * South Pass 9040 .0 .0 * 22.0 27.8 79 ----- ----- Basin Index (%) * 83 LOWER N. PLATTE Casper Mtn. 7900 .2 .0 * 26.1 26.1 100 Laprele Creek 8375 .0 .0 * 23.1 22.6 102 Reno Hill 8400 .0 .0 * 31.9 27.0 118 Windy Peak 7900 .0 .0 * 22.2 21.4 104 ----- ----- Basin Index (%) * 106 LARAMIE RIVER Brooklyn Lake 10240 .0 .0 * 38.6 33.5 115 Cinnabar Park 9574 .0 .0 * 37.3 35.6 105 Crow Creek 8330 .2 .0 * 20.6 24.0 86 Deadman Hill 10220 .0 .0 * 31.5 29.1 108 Rawah 9020 .0 .0 * 29.3 25.0 117 Roach 9700 .0 .0 * 36.3 31.1 117 Windy Peak 7900 .0 .0 * 22.2 21.4 104 ----- ----- Basin Index (%) * 108 S. PLATTE Black Mountain 8920 .0 -M * 23.9 -M * Crow Creek 8330 .2 .0 * 20.6 24.0 86 Deadman Hill 10220 .0 .0 * 31.5 29.1 108 ----- ----- Basin Index (%) * 98 LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 23.8 22.4 106 Divide Peak 8880 .0 .0 * 33.4 31.5 106 Elk River 8700 .2 .0 * 30.2 30.2 100 Little Snake River 8915 .0 .0 * 51.1 40.7 126 Old Battle 10000 .0 .0 * 49.2 48.7 101 Sage Creek Basin 7850 .1 .0 * 23.4 21.2 110 Sandstone RS 8150 .2 .0 * 25.8 27.3 95 Whiskey Park 8950 .0 .0 * 45.2 39.5 114 ----- ----- Basin Index (%) * 108 UPPER GREEN RIVER Big Sandy Opening 9080 .0 .0 * 21.9 22.2 99 Blind Bull Sum 8650 .0 .0 * 27.4 28.9 95 East Rim Divide 7930 .0 .0 * 19.1 18.5 103 Elkhart Park G.S. 9400 .0 .0 * 23.2 22.4 104 Gros Ventre Summit 8750 .0 .0 * 20.2 21.6 94 Gunsight Pass 9820 .1 .0 * 25.8 23.5 110 Indian Creek 9425 .0 .0 * -M 32.0 * Kendall R.S. 7740 .0 .0 * 20.0 21.3 94 Loomis Park 8240 .3 .0 * -M 25.8 * New Fork Lake 8340 .0 .0 * 19.3 18.6 104 Pocket Creek 9360 -M -M * 22.7 -M * Snider Basin 8060 .0 .0 * 20.2 20.5 99 Spring Creek Divide 9000 .0 .0 * 32.4 33.7 96 Triple Peak 8500 .2 .0 * 35.3 36.4 97 ----- ----- Basin Index (%) * 99 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 21.4 -M * Buck Pasture 9632 .0 -M * 31.4 -M * EF Blacks Fork GS 9360 .0 -M * 22.4 -M * Hams Fork 7840 .0 .0 * 20.3 18.5 110 Hewinta 9500 .0 .0 * 24.7 23.9 103 Hickerson Park 9122 .0 .0 * 20.9 19.8 106 Hole-in-Rock 9168 .0 .0 * 21.0 19.2 109 Indian Creek 9425 .0 .0 * -M 32.0 * Kelley R.S. 8180 .3 .0 * 26.0 26.4 98 Spirit Lk 10235 .0 -M * 28.9 -M * Steel Creek Park 10158 -M .0 * 30.1 27.7 109 ----- ----- Basin Index (%) * 106 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 23.3 -M * Bug Lake 7987 .0 .0 * 33.7 27.8 121 Burts Miller Ranch 8000 .0 -M * 12.9 -M * Chalk Creek #1 9171 .1 .0 * 39.3 37.5 105 Hayden Fork 9130 .0 .0 * 33.6 31.7 106 Kelley R.S. 8180 .3 .0 * 26.0 26.4 98 Lily Lake 9133 .0 .0 * 24.7 27.2 91 Monte Cristo 8932 .4 .0 * 42.4 37.0 115 Salt River Summit 7640 .0 .0 * 26.2 24.9 105 Spring Creek Divide 9000 .0 .0 * 32.4 33.7 96 ----- ----- Basin Index (%) * 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.