Supercell over Laramie
WRDS/SCO may be working remotely so there could be a slight delay returning phone calls. Please email wrds@uwyo.edu if you are in need of information and we will respond as soon as possible

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: SEPTEMBER 15 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 .1 .0 * -M 31.1 * Black Bear 8170 .2 .0 * 68.2 53.7 127 Blind Bull Sum 8650 .0 .0 * 44.4 29.9 148 Cottonwood Creek 7670 .1 .0 * 50.9 37.8 135 East Rim Divide 7930 .3 .0 * 28.2 19.3 146 Grand Targhee 9260 .0 .0 * 60.7 47.0 129 Granite Creek 6770 .1 .0 * 45.0 28.9 156 Grassy Lake 7265 .2 .0 * 69.0 50.9 136 Gros Ventre Summit 8750 .2 .0 * 33.0 22.6 146 Gunsight Pass 9820 .0 .0 * 36.4 24.9 146 Lewis Lake Divide 7850 .2 .0 * 69.6 49.5 141 Phillips Bench 8200 .0 .0 * 56.8 40.3 141 Salt River Summit 7760 .1 .0 * 34.5 25.9 133 Snake River Station 6920 .0 .0 * 45.3 34.1 133 Spring Creek Divide 9000 .3 .0 * 49.5 34.7 143 Thumb Divide 7980 .0 .0 * 36.4 29.0 126 Togwotee Pass 9580 .2 .0 * 51.4 37.5 137 Two Ocean Plateau 9240 -M .0 * -M 42.0 * Willow Creek 8380 .1 .0 * 64.0 50.3 127 Younts Peak 8350 .0 .0 * 43.3 28.1 154 ----- ----- Basin Index (%) * 138 MADISON-GALLATIN Black Bear 8170 .2 .0 * 68.2 53.7 127 Canyon 7870 .2 .0 * -M 26.9 * Madison Plateau 7750 .0 .0 * 46.6 39.7 117 West Yellowstone 6700 .2 .0 * -M 23.4 * Whiskey Creek 6800 .0 .0 * 35.7 32.0 112 ----- ----- Basin Index (%) * 120 YELLOWSTONE Beartooth Lake 9360 .0 .0 * 39.8 32.1 124 Burnt Mtn 5880 .2 .0 * 27.4 28.5 96 Canyon 7870 .2 .0 * -M 26.9 * Cole Creek 7850 .4 .0 * 22.9 29.7 77 Evening Star 9200 .1 .0 * 57.5 43.6 132 Fisher Creek 9100 .1 .0 * 61.7 50.3 123 Northeast Entrance 7350 .1 .0 * 29.6 24.1 123 Parker Peak 9400 .0 .0 * 49.7 30.7 162 Sylvan Lake 8420 .1 .0 * 50.6 36.8 138 Thumb Divide 7980 .0 .0 * 36.4 29.0 126 Two Ocean Plateau 9240 -M .0 * -M 42.0 * White Mill 8700 .1 .0 * 48.0 39.3 122 Wolverine 7650 -M .0 * 30.8 22.6 136 ----- ----- Basin Index (%) * 124 WIND RIVER Burroughs Creek 8750 .1 -M * 33.4 -M * Castle Creek 8400 .0 -M * 25.2 -M * Cold Springs 9630 .3 .0 * 28.5 20.7 138 Deer Park 9700 .0 .0 * 51.3 33.7 152 Hobbs Park 10100 .2 .0 * 41.9 26.6 158 Kirwin 9550 .0 .0 * 36.8 25.1 147 Little Warm 9370 .2 .0 * 32.6 24.8 131 Owl Creek 8975 .0 .0 * -M 16.4 * South Pass 9040 .0 .0 * 40.9 28.4 144 St. Lawrence Alt 8620 .1 .0 * 27.0 19.3 140 Togwotee Pass 9580 .2 .0 * 51.4 37.5 137 Townsend Creek 8700 .1 .0 * 35.7 23.4 153 ----- ----- Basin Index (%) * 145 BIGHORN BASIN Bald Mtn. 9380 .2 .0 * 27.5 30.8 89 Bear Trap Meadow 8200 .1 .0 * 21.4 19.7 109 Bone Springs Div 9350 .1 .0 * 32.2 29.9 108 Grave Springs 8550 .0 .0 * 17.0 21.8 78 Kirwin 9550 .0 .0 * 36.8 25.1 147 Marquette 8760 .1 -M * 31.5 -M * Middle Powder 7760 .3 .0 * 18.6 23.7 78 Owl Creek 8975 .0 .0 * -M 16.4 * Powder River Pass 9480 .1 .0 * 27.8 25.5 109 Shell Creek 9580 .0 .0 * 26.9 27.0 100 Timber Creek 7950 .1 .0 * 23.7 20.1 118 ----- ----- Basin Index (%) * 104 SHOSHONE RIVER Blackwater 9780 .1 .0 * 55.3 35.0 158 Evening Star 9200 .1 .0 * 57.5 43.6 132 Marquette 8760 .1 -M * 31.5 -M * Sylvan Road 7120 .0 .0 * 39.6 27.6 143 Younts Peak 8350 .0 .0 * 43.3 28.1 154 ----- ----- Basin Index (%) * 146 POWDER RIVER Bear Trap Meadow 8200 .1 .0 * 21.4 19.7 109 Cloud Peak Reservoir 9860 .1 .0 * 35.3 29.1 121 Grave Springs 8550 .0 .0 * 17.0 21.8 78 Hansen Sawmill 8360 .1 .0 * 29.7 21.0 141 Middle Powder 7760 .3 .0 * 18.6 23.7 78 Powder River Pass 9480 .1 .0 * 27.8 25.5 109 Soldier Park 8720 .0 -M * 29.4 -M * ----- ----- Basin Index (%) * 106 TONGUE RIVER Big Goose 7990 .1 .0 * 25.6 23.6 108 Bone Springs Div 9350 .1 .0 * 32.2 29.9 108 Burgess Junction 7880 .0 .0 * 26.6 24.4 109 Dome Lake 8880 .0 .0 * 30.3 27.1 112 Little Goose 8870 .0 -M * 31.3 -M * Sucker Creek 8880 .0 .0 * 31.0 28.5 109 Tie Creek 6870 .0 .0 * 30.4 25.5 119 ----- ----- Basin Index (%) * 111 BELLE FOURCHE Cole Canyon 5910 .1 .0 * 22.9 24.6 93 ----- ----- Basin Index (%) * 93 CHEYENNE RIVER BASIN Blind Park 6890 .1 .0 * 23.1 26.7 87 North Rapid Creek 6130 .1 .0 * 22.9 26.2 87 ----- ----- Basin Index (%) * 87 UPPER N. PLATTE Arapaho Ridge 10960 -M .0 * -M 36.8 * Blackhall Mtn 9820 .7 -M * 48.5 -M * Columbine 9160 .4 .0 * 38.9 36.9 105 Divide Peak 8880 .0 .0 * 29.5 32.6 90 Joe Wright 10120 .4 .0 * 43.2 42.5 102 Laprele Creek 8375 .1 .0 * 22.9 23.3 98 Med Bow 10500 .1 -M * 51.4 -M * North French Creek 10130 -M .0 * 41.7 41.9 100 Never Summer 10280 -M .0 * 30.5 -M * Old Battle 10000 .1 .0 * 50.6 50.2 101 Rawah 9020 .1 .0 * 26.4 25.9 102 Sage Creek Basin 7850 -M .0 * 21.4 22.1 97 Sand Lake 10050 .1 .0 * 41.3 39.6 104 South Brush Creek 8440 .1 .0 * 19.4 26.3 74 Tower 10500 -M .0 * -M 56.6 * Webber Springs 9250 .6 .0 * 43.6 39.0 112 Willow Creek Pass 9540 .1 .0 * 27.4 25.0 110 Zirkel 9340 .0 .0 * 55.4 41.3 134 ----- ----- Basin Index (%) * 103 SWEETWATER Deer Park 9700 .0 .0 * 51.3 33.7 152 Larsen Creek 9000 .0 .0 * 31.3 -M * South Pass 9040 .0 .0 * 40.9 28.4 144 ----- ----- Basin Index (%) * 148 LOWER N. PLATTE Casper Mtn. 7900 .1 .0 * 25.9 26.8 97 Laprele Creek 8375 .1 .0 * 22.9 23.3 98 Reno Hill 8400 .0 .0 * 25.7 27.7 93 Windy Peak 7900 .0 .0 * 22.3 22.1 101 ----- ----- Basin Index (%) * 97 LARAMIE RIVER Brooklyn Lake 10240 .0 .0 * 32.6 34.2 95 Cinnabar Park 9574 .0 .0 * 34.4 36.5 94 Crow Creek 8330 -M .0 * 19.8 24.8 80 Deadman Hill 10220 .0 .0 * 34.4 29.9 115 Rawah 9020 .1 .0 * 26.4 25.9 102 Roach 9700 .1 .0 * 33.9 32.0 106 ----- ----- Basin Index (%) * 99 S. PLATTE Black Mountain 8920 -M -M * 25.8 -M * Crow Creek 8330 -M .0 * 19.8 24.8 80 Deadman Hill 10220 .0 .0 * 34.4 29.9 115 ----- ----- Basin Index (%) * 99 LITTLE SNAKE RIVER Battle Mountain 7440 .0 .0 * 22.0 23.2 95 Divide Peak 8880 .0 .0 * 29.5 32.6 90 Elk River 8700 .0 .0 * 28.1 31.2 90 Little Snake River 8915 .2 .0 * 49.8 41.8 119 Old Battle 10000 .1 .0 * 50.6 50.2 101 Sage Creek Basin 7850 -M .0 * 21.4 22.1 97 Sandstone RS 8150 .1 .0 * 22.6 28.3 80 Whiskey Park 8950 .1 .0 * 40.1 40.4 99 ----- ----- Basin Index (%) * 98 UPPER GREEN RIVER Big Sandy Opening 9080 .1 .0 * 30.8 23.1 133 Blind Bull Sum 8650 .0 .0 * 44.4 29.9 148 East Rim Divide 7930 .3 .0 * 28.2 19.3 146 Elkhart Park G.S. 9400 .1 .0 * 32.3 23.6 137 Gros Ventre Summit 8750 .2 .0 * 33.0 22.6 146 Gunsight Pass 9820 .0 .0 * 36.4 24.9 146 Kendall R.S. 7740 .1 .0 * 38.3 22.2 173 Loomis Park 8240 .2 .0 * 41.5 26.8 155 New Fork Lake 8340 .1 .0 * 26.5 19.5 136 Pocket Creek 9360 .1 -M * 30.4 -M * Snider Basin 8060 .1 .0 * 32.3 21.3 152 Spring Creek Divide 9000 .3 .0 * 49.5 34.7 143 Triple Peak 8500 .1 .0 * 50.3 37.2 135 ----- ----- Basin Index (%) * 145 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 23.0 -M * Buck Pasture 9632 .0 -M * 34.0 -M * EF Blacks Fork GS 9360 -M -M * 29.6 -M * Hams Fork 7840 -M .0 * -M 19.1 * Hewinta 9500 .1 .0 * 27.2 25.0 109 Hickerson Park 9122 .4 .0 * 22.4 20.8 108 Hole-in-Rock 9168 .0 .0 * 24.1 20.2 119 Indian Creek 9425 .1 .0 * 50.0 32.9 152 Kelley R.S. 8180 .3 .0 * 40.0 27.2 147 Spirit Lk 10235 .0 -M * 31.0 -M * Steel Creek Park 10158 .1 .0 * 33.1 28.8 115 ----- ----- Basin Index (%) * 127 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 25.0 -M * Bug Lake 7987 .8 .0 * 42.4 28.8 147 Burts Miller Ranch 8000 .1 -M * 13.8 -M * Chalk Creek #1 9171 .0 .0 * 47.5 38.8 122 Hayden Fork 9130 .0 .0 * 37.6 33.0 114 Kelley R.S. 8180 .3 .0 * 40.0 27.2 147 Lily Lake 9133 .0 .0 * 29.2 28.3 103 Monte Cristo 8932 .4 .0 * 51.0 38.1 134 Salt River Summit 7760 .1 .0 * 34.5 25.9 133 ----- ----- Basin Index (%) * 128 ----------------------------------------------------------------------------- -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.