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: OCTOBER 10 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 .0 .0 * 2.7 .6 450 Black Bear 8170 .9 .3 300* 3.1 1.1 282 Blind Bull Sum 8650 .8 .0 * .8 .6 133 Cottonwood Creek 7670 .6 .0 * 2.3 .8 288 East Rim Divide 7930 .0 .0 * 1.2 .4 300 Grand Targhee 9260 5.0 1.2 417* -M 2.0 * Granite Creek 6770 .0 .0 * 1.9 .5 380 Grassy Lake 7265 1.6 .0 * 3.9 1.0 390 Gros Ventre Summit 8750 .3 .0 * 1.8 .5 360 Gunsight Pass 9820 .6 .0 * 2.2 .7 314 Lewis Lake Divide 7850 .0 .0 * 2.3 .9 256 Phillips Bench 8200 1.1 .0 * 3.1 .6 517 Salt River Summit 7760 .1 .0 * 1.5 .5 300 Snake River Station 6920 .2 .0 * 2.6 .8 325 Spring Creek Divide 9000 .7 .0 * 1.8 .5 360 Thumb Divide 7980 .7 .0 * 1.8 .7 257 Togwotee Pass 9580 1.5 .4 375* 2.5 .7 357 Two Ocean Plateau 9240 -M .6 * -M .9 * Willow Creek 8380 .4 .0 * 2.9 1.0 290 Younts Peak 8350 .1 .2 50* .7 .7 100 ----- ----- Basin Index (%) 695* 310 MADISON-GALLATIN Black Bear 8170 .9 .3 300* 3.1 1.1 282 Canyon 7870 .3 .0 * 1.9 .6 317 Madison Plateau 7750 .0 .0 * 2.3 .8 288 West Yellowstone 6700 .1 .0 * 1.5 .6 250 Whiskey Creek 6800 .1 .0 * 2.1 .7 300 ----- ----- Basin Index (%) 467* 287 YELLOWSTONE Beartooth Lake 9360 .2 .8 25* 1.0 .6 167 Burnt Mtn 5880 .0 .0 * 1.3 1.5 87 Canyon 7870 .3 .0 * 1.9 .6 317 Cole Creek 7850 .6 .8 75* 1.3 1.2 108 Evening Star 9200 1.0 .4 250* 2.8 1.0 280 Fisher Creek 9100 .1 .3 33* 1.9 1.0 190 Northeast Entrance 7350 .1 .0 * 1.5 .6 250 Parker Peak 9400 1.2 .7 171* 2.4 .9 267 Sylvan Lake 8420 2.2 .2 1100* 4.1 1.0 410 Thumb Divide 7980 .7 .0 * 1.8 .7 257 Two Ocean Plateau 9240 -M .6 * -M .9 * White Mill 8700 .1 .3 33* 1.4 .9 156 Wolverine 7650 .0 .0 * 1.4 .6 233 ----- ----- Basin Index (%) 186* 215 WIND RIVER Burroughs Creek 8750 .0 -M * 1.2 -M * Castle Creek 8400 .1 -M * .8 -M * Cold Springs 9630 .3 .0 * .9 .6 150 Deer Park 9700 .6 .3 200* 1.1 .9 122 Hobbs Park 10100 .2 .2 100* 1.0 .7 143 Kirwin 9550 .2 .3 67* .8 .7 114 Little Warm 9370 .7 .0 * 1.6 .6 267 Owl Creek 8975 .0 .0 * .8 .6 133 South Pass 9040 .0 .0 * 1.0 .7 143 St. Lawrence Alt 8620 .0 .0 * .4 .6 67 Togwotee Pass 9580 1.5 .4 375* 2.5 .7 357 Townsend Creek 8700 .1 .0 * 1.4 .8 175 ----- ----- Basin Index (%) 300* 167 BIGHORN BASIN Bald Mtn. 9380 1.9 1.1 173* 1.3 1.0 130 Bear Trap Meadow 8200 .5 .0 * 1.2 .6 200 Bone Springs Div 9350 .7 .9 78* 1.4 1.0 140 Grave Springs 8550 .7 .0 * 1.4 .9 156 Kirwin 9550 .2 .3 67* .8 .7 114 Marquette 8760 .3 -M * 1.2 -M * Middle Powder 7760 2.1 .1 2100* 1.0 .9 111 Owl Creek 8975 .0 .0 * .8 .6 133 Powder River Pass 9480 .8 .0 * 1.8 .7 257 Shell Creek 9580 2.2 1.1 200* 1.9 .9 211 Timber Creek 7950 .1 .0 * .6 .8 75 ----- ----- Basin Index (%) 263* 151 SHOSHONE RIVER Blackwater 9780 1.9 .8 238* 3.5 1.0 350 Evening Star 9200 1.0 .4 250* 2.8 1.0 280 Marquette 8760 .3 -M * 1.2 -M * Sylvan Road 7120 .2 .0 * 2.7 .8 338 Younts Peak 8350 .1 .2 50* .7 .7 100 ----- ----- Basin Index (%) 229* 277 POWDER RIVER Bear Trap Meadow 8200 .5 .0 * 1.2 .6 200 Cloud Peak Reservoir 9860 .1 .0 * 1.0 .9 111 Grave Springs 8550 .7 .0 * 1.4 .9 156 Hansen Sawmill 8360 .1 .0 * .7 .6 117 Middle Powder 7760 2.1 .1 2100* 1.0 .9 111 Powder River Pass 9480 .8 .0 * 1.8 .7 257 Soldier Park 8720 .1 -M * 1.3 -M * ----- ----- Basin Index (%) 4300* 154 TONGUE RIVER Big Goose 7990 .1 .0 * .6 .9 67 Bone Springs Div 9350 .7 .9 78* 1.4 1.0 140 Burgess Junction 7880 .0 .2 0* 1.2 .8 150 Dome Lake 8880 .0 .4 0* 1.0 1.0 100 Little Goose 8870 .0 -M * 1.0 -M * Sucker Creek 8880 .2 .2 100* 1.4 .9 156 Tie Creek 6870 .1 .0 * .8 1.1 73 ----- ----- Basin Index (%) 65* 112 BELLE FOURCHE Cole Canyon 5910 .0 .0 * .6 .7 86 ----- ----- Basin Index (%) * 86 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 1.3 .9 144 North Rapid Creek 6130 .0 .0 * .6 .8 75 ----- ----- Basin Index (%) * 112 UPPER N. PLATTE Arapaho Ridge 10960 .4 .2 200* .7 .8 88 Blackhall Mtn 9820 .4 -M * 1.0 -M * Columbine 9160 .0 .0 * .6 .9 67 Divide Peak 8880 .0 .0 * .3 1.1 27 Joe Wright 10120 .0 .0 * 1.0 1.0 100 Laprele Creek 8375 .0 .0 * .2 .7 29 Med Bow 10500 1.0 -M * 1.3 -M * North French Creek 10130 .0 .2 0* .7 1.0 70 Never Summer 10280 .5 .3 167* .7 -M * Old Battle 10000 1.2 .2 600* .8 1.4 57 Rawah 9020 .2 .0 * .9 .8 112 Sage Creek Basin 7850 .0 .0 * .4 .9 44 Sand Lake 10050 .6 .2 300* .1 1.0 10 South Brush Creek 8440 .0 .0 * .5 .8 62 Tower 10500 .6 .5 120* .5 1.3 38 Webber Springs 9250 .0 .0 * 1.1 1.1 100 Willow Creek Pass 9540 .2 .0 * .4 .5 80 Zirkel 9340 .1 .0 * .8 1.4 57 ----- ----- Basin Index (%) 238* 61 SWEETWATER Deer Park 9700 .6 .3 200* 1.1 .9 122 Larsen Creek 9000 .2 .0 * 2.0 -M * South Pass 9040 .0 .0 * 1.0 .7 143 ----- ----- Basin Index (%) 267* 131 LOWER N. PLATTE Casper Mtn. 7900 .0 .0 * .6 .9 67 Laprele Creek 8375 .0 .0 * .2 .7 29 Reno Hill 8400 .6 .0 * 1.0 .8 125 Windy Peak 7900 .0 .0 * .2 .6 33 ----- ----- Basin Index (%) * 67 LARAMIE RIVER Brooklyn Lake 10240 .0 .0 * -M .6 * Cinnabar Park 9574 .1 .0 * .6 .8 75 Crow Creek 8330 -M .0 * .3 .4 75 Deadman Hill 10220 .6 .0 * .6 .7 86 Rawah 9020 .2 .0 * .9 .8 112 Roach 9700 .1 .0 * .3 .7 43 ----- ----- Basin Index (%) * 79 S. PLATTE Black Mountain 8920 .1 -M * .2 -M * Crow Creek 8330 -M .0 * .3 .4 75 Deadman Hill 10220 .6 .0 * .6 .7 86 ----- ----- Basin Index (%) * 82 LITTLE SNAKE RIVER Battle Mountain 7440 .3 .0 * .6 .7 86 Divide Peak 8880 .0 .0 * .3 1.1 27 Elk River 8700 .2 .0 * .6 .9 67 Little Snake River 8915 .1 .0 * 1.2 1.4 86 Old Battle 10000 1.2 .2 600* .8 1.4 57 Sage Creek Basin 7850 .0 .0 * .4 .9 44 Sandstone RS 8150 1.0 .0 * .1 .8 12 Whiskey Park 8950 .0 .0 * .9 1.0 90 ----- ----- Basin Index (%) 1400* 60 UPPER GREEN RIVER Big Sandy Opening 9080 .8 .0 * 2.0 .5 400 Blind Bull Sum 8650 .8 .0 * .8 .6 133 East Rim Divide 7930 .0 .0 * 1.2 .4 300 Elkhart Park G.S. 9400 1.1 .0 * 2.2 .6 367 Gros Ventre Summit 8750 .3 .0 * 1.8 .5 360 Gunsight Pass 9820 .6 .0 * 2.2 .7 314 Kendall R.S. 7740 .0 .0 * 1.3 .4 325 Loomis Park 8240 .0 .0 * 1.7 .5 340 New Fork Lake 8340 .1 .0 * .7 .4 175 Pocket Creek 9360 1.0 -M * 2.0 -M * Snider Basin 8060 .2 .0 * 1.4 .3 467 Spring Creek Divide 9000 .7 .0 * 1.8 .5 360 Triple Peak 8500 .2 .0 * 1.8 .6 300 ----- ----- Basin Index (%) * 315 LOWER GREEN RIVER Blacks Fork Jct 8870 .0 -M * .4 -M * Buck Pasture 9700 .1 -M * .8 -M * EF Blacks Fork GS 9360 .0 -M * .8 -M * Hams Fork 7840 .0 .0 * .8 .4 200 Hewinta 9519 .0 .0 * .5 .7 71 Hickerson Park 9145 .4 .0 * .6 .6 100 Hole-in-Rock 9150 .0 .0 * .7 .6 117 Indian Creek 9425 .5 .0 * 1.5 .5 300 Kelley R.S. 8180 .1 .0 * 1.2 .5 240 Spirit Lk 10235 .0 -M * 1.0 -M * Steel Creek Park 10200 .6 .0 * .8 .8 100 ----- ----- Basin Index (%) * 149 UPPER BEAR RIVER Bear River RS 8777 .0 -M * .3 -M * Bug Lake 7950 .1 .0 * .3 .6 50 Burts Miller Ranch 8000 .0 -M * .3 -M * Chalk Creek #1 8993 .2 .0 * .9 .9 100 Hayden Fork 9212 .0 .0 * .7 .8 88 Kelley R.S. 8180 .1 .0 * 1.2 .5 240 Lily Lake 9156 .0 .0 * .3 .8 38 Monte Cristo 8960 .1 .0 * .4 .8 50 Salt River Summit 7760 .1 .0 * 1.5 .5 300 ----- ----- Basin Index (%) * 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.