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: OCTOBER 7 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 .3 .0 * 2.7 .4 675 Black Bear 8170 1.1 .1 1100* 3.0 .8 375 Blind Bull Sum 8650 .7 .0 * .7 .4 175 Cottonwood Creek 7670 .9 .0 * 2.2 .6 367 East Rim Divide 7930 .0 .0 * 1.1 .3 367 Grand Targhee 9260 5.1 1.0 510* -M 1.4 * Granite Creek 6770 .0 .0 * 1.8 .4 450 Grassy Lake 7265 2.1 .0 * 3.8 .8 475 Gros Ventre Summit 8750 .4 .0 * 1.8 .3 600 Gunsight Pass 9820 .8 .0 * 2.0 .6 333 Lewis Lake Divide 7850 .4 .0 * 2.2 .6 367 Phillips Bench 8200 1.2 .0 * 3.1 .5 620 Salt River Summit 7760 .1 .0 * 1.2 .4 300 Snake River Station 6920 .4 .0 * 2.6 .6 433 Spring Creek Divide 9000 .7 .0 * 1.7 .4 425 Thumb Divide 7980 .5 .0 * 1.6 .6 267 Togwotee Pass 9580 1.6 .1 1600* 2.4 .5 480 Two Ocean Plateau 9240 2.4 .3 800* -M .6 * Willow Creek 8380 1.2 .0 * 2.9 .7 414 Younts Peak 8350 .1 .0 * .3 .6 50 ----- ----- Basin Index (%) 1333* 391 MADISON-GALLATIN Black Bear 8170 1.1 .1 1100* 3.0 .8 375 Canyon 7870 .7 .0 * 1.7 .5 340 Madison Plateau 7750 .1 .0 * 2.3 .6 383 West Yellowstone 6700 .0 .0 * 1.5 .5 300 Whiskey Creek 6800 .0 .0 * 1.6 .5 320 ----- ----- Basin Index (%) 1900* 348 YELLOWSTONE Beartooth Lake 9360 .3 .6 50* .7 .5 140 Burnt Mtn 5880 .1 .0 * 1.3 1.1 118 Canyon 7870 .7 .0 * 1.7 .5 340 Cole Creek 7850 1.2 .6 200* 1.0 .8 125 Evening Star 9200 1.2 .1 1200* 2.4 .7 343 Fisher Creek 9100 .2 .0 * 1.5 .7 214 Northeast Entrance 7350 .2 .0 * 1.4 .4 350 Parker Peak 9400 1.3 .5 260* 2.2 .7 314 Sylvan Lake 8420 2.6 .0 * 4.0 .7 571 Thumb Divide 7980 .5 .0 * 1.6 .6 267 Two Ocean Plateau 9240 2.4 .3 800* -M .6 * White Mill 8700 .3 .0 * 1.0 .6 167 Wolverine 7650 .1 .0 * 1.4 .5 280 ----- ----- Basin Index (%) 529* 259 WIND RIVER Burroughs Creek 8750 .0 -M * .4 -M * Castle Creek 8400 .0 -M * .7 -M * Cold Springs 9630 .1 .0 * .5 .5 100 Deer Park 9700 .8 .0 * .9 .8 112 Hobbs Park 10100 .0 .0 * .4 .6 67 Kirwin 9550 .0 .0 * .7 .5 140 Little Warm 9370 .5 .0 * 1.3 .4 325 Owl Creek 8975 .0 .0 * .8 .4 200 South Pass 9040 .2 .0 * .8 .5 160 St. Lawrence Alt 8620 .0 .0 * .4 .5 80 Togwotee Pass 9580 1.6 .1 1600* 2.4 .5 480 Townsend Creek 8700 .0 .0 * .6 .6 100 ----- ----- Basin Index (%) 3200* 166 BIGHORN BASIN Bald Mtn. 9380 1.9 .7 271* 1.1 .6 183 Bear Trap Meadow 8200 .7 .0 * 1.0 .4 250 Bone Springs Div 9350 .8 .6 133* 1.2 .7 171 Grave Springs 8550 .8 .0 * 1.3 .7 186 Kirwin 9550 .0 .0 * .7 .5 140 Marquette 8760 .2 -M * 1.2 -M * Middle Powder 7760 2.3 .0 * .9 .6 150 Owl Creek 8975 .0 .0 * .8 .4 200 Powder River Pass 9480 .9 .0 * 1.6 .5 320 Shell Creek 9580 2.1 .8 262* 1.6 .6 267 Timber Creek 7950 .0 .0 * .7 .6 117 ----- ----- Basin Index (%) 452* 195 SHOSHONE RIVER Blackwater 9780 1.9 .5 380* 3.3 .7 471 Evening Star 9200 1.2 .1 1200* 2.4 .7 343 Marquette 8760 .2 -M * 1.2 -M * Sylvan Road 7120 .2 .0 * 2.6 .6 433 Younts Peak 8350 .1 .0 * .3 .6 50 ----- ----- Basin Index (%) 567* 331 POWDER RIVER Bear Trap Meadow 8200 .7 .0 * 1.0 .4 250 Cloud Peak Reservoir 9860 .3 .0 * 1.1 .6 183 Grave Springs 8550 .8 .0 * 1.3 .7 186 Hansen Sawmill 8360 .1 .0 * .5 .4 125 Middle Powder 7760 2.3 .0 * .9 .6 150 Powder River Pass 9480 .9 .0 * 1.6 .5 320 Soldier Park 8720 .2 -M * 1.1 -M * ----- ----- Basin Index (%) * 200 TONGUE RIVER Big Goose 7990 .0 .0 * .2 .7 29 Bone Springs Div 9350 .8 .6 133* 1.2 .7 171 Burgess Junction 7880 .0 .1 0* .6 .6 100 Dome Lake 8880 .0 .1 0* .5 .6 83 Little Goose 8870 .1 -M * .9 -M * Sucker Creek 8880 .3 .0 * .6 .6 100 Tie Creek 6870 .0 .0 * .8 .8 100 ----- ----- Basin Index (%) 138* 98 BELLE FOURCHE Cole Canyon 5910 .0 .0 * .4 .5 80 ----- ----- Basin Index (%) * 80 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 1.3 .7 186 North Rapid Creek 6130 .0 .0 * .6 .6 100 ----- ----- Basin Index (%) * 146 UPPER N. PLATTE Arapaho Ridge 10960 .4 .1 400* .6 .6 100 Blackhall Mtn 9820 .6 -M * .9 -M * Columbine 9160 .0 .0 * .3 .6 50 Divide Peak 8880 .0 .0 * .0 .7 0 Joe Wright 10120 .5 .0 * .9 .6 150 Laprele Creek 8375 .0 .0 * .0 .4 0 Med Bow 10500 .9 -M * 1.4 -M * North French Creek 10130 .4 .0 * .7 .6 117 Never Summer 10280 .4 .0 * .7 -M * Old Battle 10000 1.1 .0 * .4 .9 44 Rawah 9020 .8 .0 * .6 .6 100 Sage Creek Basin 7850 -M .0 * .5 .6 83 Sand Lake 10050 .4 .0 * -M .7 * South Brush Creek 8440 .0 .0 * .2 .5 40 Tower 10500 .9 .0 * .0 1.0 0 Webber Springs 9250 .3 .0 * 1.0 .7 143 Willow Creek Pass 9540 .3 .0 * .4 .3 133 Zirkel 9340 .1 .0 * .7 1.0 70 ----- ----- Basin Index (%) 5600* 69 SWEETWATER Deer Park 9700 .8 .0 * .9 .8 112 Larsen Creek 9000 .5 .0 * 1.9 -M * South Pass 9040 .2 .0 * .8 .5 160 ----- ----- Basin Index (%) * 131 LOWER N. PLATTE Casper Mtn. 7900 .0 .0 * .1 .5 20 Laprele Creek 8375 .0 .0 * .0 .4 0 Reno Hill 8400 .7 .0 * .5 .5 100 Windy Peak 7900 .0 .0 * .2 .4 50 ----- ----- Basin Index (%) * 44 LARAMIE RIVER Brooklyn Lake 10240 .0 .0 * -M .4 * Cinnabar Park 9574 .2 .0 * .6 .6 100 Crow Creek 8330 -M .0 * .3 .2 150 Deadman Hill 10220 .4 .0 * .6 .4 150 Rawah 9020 .8 .0 * .6 .6 100 Roach 9700 .2 .0 * .3 .4 75 ----- ----- Basin Index (%) * 109 S. PLATTE Black Mountain 8920 .2 -M * .2 -M * Crow Creek 8330 -M .0 * .3 .2 150 Deadman Hill 10220 .4 .0 * .6 .4 150 ----- ----- Basin Index (%) * 150 LITTLE SNAKE RIVER Battle Mountain 7440 .3 .0 * .7 .5 140 Divide Peak 8880 .0 .0 * .0 .7 0 Elk River 8700 .2 .0 * .6 .6 100 Little Snake River 8915 .0 .0 * 1.1 1.0 110 Old Battle 10000 1.1 .0 * .4 .9 44 Sage Creek Basin 7850 -M .0 * .5 .6 83 Sandstone RS 8150 1.0 .0 * -M .6 * Whiskey Park 8950 .2 .0 * 1.0 .7 143 ----- ----- Basin Index (%) * 86 UPPER GREEN RIVER Big Sandy Opening 9080 .7 .0 * 1.9 .4 475 Blind Bull Sum 8650 .7 .0 * .7 .4 175 East Rim Divide 7930 .0 .0 * 1.1 .3 367 Elkhart Park G.S. 9400 1.1 .0 * 2.1 .4 525 Gros Ventre Summit 8750 .4 .0 * 1.8 .3 600 Gunsight Pass 9820 .8 .0 * 2.0 .6 333 Kendall R.S. 7740 .0 .0 * 1.3 .3 433 Loomis Park 8240 .0 .0 * 1.7 .3 567 New Fork Lake 8340 .1 .0 * .6 .3 200 Pocket Creek 9360 1.0 -M * 1.7 -M * Snider Basin 8060 .0 .0 * 1.2 .2 600 Spring Creek Divide 9000 .7 .0 * 1.7 .4 425 Triple Peak 8500 .2 .0 * 1.7 .4 425 ----- ----- Basin Index (%) * 414 LOWER GREEN RIVER Blacks Fork Jct 8870 .0 -M * .4 -M * Buck Pasture 9700 .0 -M * .9 -M * EF Blacks Fork GS 9360 .0 -M * .8 -M * Hams Fork 7840 .0 .0 * .6 .3 200 Hewinta 9519 .0 .0 * .5 .5 100 Hickerson Park 9145 .0 .0 * .5 .4 125 Hole-in-Rock 9150 .0 .0 * .6 .5 120 Indian Creek 9425 .9 .0 * 1.3 .4 325 Kelley R.S. 8180 .1 .0 * 1.1 .4 275 Spirit Lk 10235 .2 -M * .9 -M * Steel Creek Park 10200 .4 .0 * .9 .6 150 ----- ----- Basin Index (%) * 177 UPPER BEAR RIVER Bear River RS 8777 .0 -M * .4 -M * Bug Lake 7950 .0 .0 * .3 .5 60 Burts Miller Ranch 8000 .0 -M * .2 -M * Chalk Creek #1 8993 .4 .0 * 1.0 .7 143 Hayden Fork 9212 .1 .0 * .7 .6 117 Kelley R.S. 8180 .1 .0 * 1.1 .4 275 Lily Lake 9156 .0 .0 * .4 .5 80 Monte Cristo 8960 .1 .0 * .5 .6 83 Salt River Summit 7760 .1 .0 * 1.2 .4 300 ----- ----- Basin Index (%) * 141 ----------------------------------------------------------------------------- -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.