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: OCTOBER 5 , 2023 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 .0 .0 * .9 .3 300 Blind Bull Sum 8650 .5 .0 * .9 .2 450 Cottonwood Creek 7670 .1 .0 * 2.2 .3 733 East Rim Divide 7930 -M .0 * .6 .1 600 Grand Targhee 9260 1.4 .2 700* 2.2 .8 275 Granite Creek 6770 .0 .0 * 1.0 .2 500 Grassy Lake 7265 -M .0 * 1.1 .6 183 Gros Ventre Summit 8750 -M .0 * .8 .2 400 Gunsight Pass 9820 .7 .0 * 1.2 .4 300 Lewis Lake Divide 7850 .1 .0 * .6 .5 120 Loomis Park 8240 .2 .0 * 1.0 .1 1000 Phillips Bench 8200 .4 .0 * 1.6 .2 800 Salt River Summit 7640 .0 .0 * .0 .2 0 Snake River Station 6920 .0 .0 * .7 .3 233 Somsen Ranch 6800 -M .0 * 1.6 .2 800 Spring Creek Divide 9000 .4 .0 * 1.1 .2 550 Thumb Divide 7980 .2 .0 * .4 .4 100 Togwotee Pass 9580 .6 .0 * .4 .4 100 Triple Peak 8500 -M .0 * 1.0 .4 250 Two Ocean Plateau 9240 .7 .0 * 1.0 .6 167 Willow Creek 8080 .0 .0 * 2.3 .4 575 Younts Peak 8350 -M .0 * -M .2 * ----- ----- Basin Index (%) 2650* 323 MADISON HEADWATERS IN WYOMING Black Bear 8170 .1 .0 * 1.0 .3 333 Canyon 7870 .1 -M * .6 -M * Madison Plateau 7750 .0 .0 * .6 .4 150 West Yellowstone 6700 .1 .0 * .4 .2 200 Whiskey Creek 6800 .1 .0 * .7 .2 350 ----- ----- Basin Index (%) * 245 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 .0 .0 * .4 .3 133 Canyon 7870 .1 -M * .6 -M * Evening Star 9200 .4 .0 * 1.0 .5 200 Fisher Creek 9100 .1 .0 * .8 .4 200 Monument Peak 8850 .0 .0 * .8 .3 267 Northeast Entrance 7350 .0 .0 * .4 .2 200 Parker Peak 9400 .8 .2 400* 1.0 .3 333 Sylvan Lake 8420 .3 .0 * 1.7 .6 283 Thumb Divide 7980 .2 .0 * .4 .4 100 Two Ocean Plateau 9240 .7 .0 * 1.0 .6 167 White Mill 8700 .0 .0 * .7 .3 233 Wolverine 7650 .0 .0 * .4 .3 133 ----- ----- Basin Index (%) 1250* 205 WIND RIVER Burroughs Creek 8750 .2 -M * .6 -M * Castle Creek 8400 .0 .0 * .2 .2 100 Cold Springs 9630 .1 .0 * .2 .2 100 Deer Park 9700 .0 .0 * .7 .2 350 Hobbs Park 10100 .1 .0 * .5 .2 250 Kirwin 9550 .0 .0 * .4 .4 100 Little Warm 9370 .0 .0 * .6 .3 200 South Pass 9040 .1 .0 * .4 .2 200 St. Lawrence Alt 8620 .0 -M * .2 -M * Togwotee Pass 9580 .6 .0 * .4 .4 100 Townsend Creek 8700 .0 .0 * .8 .2 400 ----- ----- Basin Index (%) * 183 BIGHORN BASIN Bald Mtn. 9380 .5 .0 * .9 .2 450 Bear Trap Meadow 8200 .0 .0 * .6 .3 200 Bone Springs Div 9350 .6 .0 * 1.3 .3 433 Grave Springs 8550 .2 .0 * .5 .2 250 Kirwin 9550 .0 .0 * .4 .4 100 Marquette 8760 .0 .0 * .4 .2 200 Middle Powder 7760 .1 .0 * 1.0 .2 500 Owl Creek 8975 .0 .0 * .6 .2 300 Powder River Pass 9480 -M .2 * -M .4 * Shell Creek 9580 .8 .6 133* 1.3 .4 325 Timber Creek 7950 .0 .0 * .1 .3 33 ----- ----- Basin Index (%) 367* 263 SHOSHONE RIVER Blackwater 9780 .3 .0 * .1 .4 25 Evening Star 9200 .4 .0 * 1.0 .5 200 Marquette 8760 .0 .0 * .4 .2 200 Sylvan Lake 8420 .3 .0 * 1.7 .6 283 Sylvan Road 7120 .0 .0 * 1.1 .2 550 Younts Peak 8350 -M .0 * -M .2 * ----- ----- Basin Index (%) * 226 POWDER RIVER Bear Trap Meadow 8200 .0 .0 * .6 .3 200 Cloud Peak Reservoir 9860 .0 .0 * .5 .4 125 Grave Springs 8550 .2 .0 * .5 .2 250 Hansen Sawmill 8360 .0 .0 * .0 .4 0 Middle Powder 7760 .1 .0 * 1.0 .2 500 Powder River Pass 9480 -M .2 * -M .4 * Soldier Park 8720 .0 .0 * .4 .4 100 ----- ----- Basin Index (%) * 158 TONGUE RIVER Big Goose 7990 .1 .0 * .5 .3 167 Bone Springs Div 9350 .6 .0 * 1.3 .3 433 Burgess Junction 7880 .1 .0 * 1.0 .3 333 Dome Lake 8880 .0 .0 * .5 .4 125 Little Goose 8870 .1 .0 * .6 .4 150 Sucker Creek 8880 .2 .0 * .8 .2 400 Tie Creek 6870 .1 .0 * .6 .2 300 ----- ----- Basin Index (%) * 252 BELLE FOURCHE Blind Park 6890 .2 .0 * .6 .2 300 Cole Canyon 5910 .0 .0 * .5 .1 500 North Rapid Creek 6130 .0 .0 * .6 .2 300 ----- ----- Basin Index (%) * 340 CHEYENNE RIVER BASIN Blind Park 6890 .2 .0 * .6 .2 300 North Rapid Creek 6130 .0 .0 * .6 .2 300 ----- ----- Basin Index (%) * 300 UPPER N. PLATTE Arapaho Ridge 10976 .1 .0 * .2 .4 50 Blackhall Mtn 9839 .2 .0 * .5 .4 125 Cinnabar Park 9707 .0 .0 * .4 .3 133 Columbine 9167 -M .0 * .1 .3 33 Divide Peak 8730 .1 .0 * .8 .2 400 Joe Wright 10158 .0 .0 * .4 .2 200 Laprele Creek 8390 .1 .0 * .1 .1 100 Med Bow 10512 .5 -M * .7 -M * Never Summer 10323 .1 .0 * .2 .4 50 North French Creek 10153 .2 .0 * .5 .2 250 Old Battle 9860 .3 .0 * .8 .2 400 Rawah 9069 .0 .0 * .3 .3 100 Sage Creek Basin 7850 .1 .0 * .6 .2 300 Sand Lake 10098 .3 .0 * .2 .2 100 South Brush Creek 8495 -M .0 * .3 .2 150 Tower 10620 .2 .0 * .2 .4 50 Webber Springs 9260 .1 .0 * .5 .3 167 Whiskey Park 9020 .1 .0 * .4 .3 133 Willow Creek Pass 9523 .1 .0 * .2 .2 100 Zirkel 9338 .1 .0 * .1 .5 20 ----- ----- Basin Index (%) * 128 SWEETWATER Deer Park 9700 .0 .0 * .7 .2 350 Larsen Creek 9000 -M .0 * .6 .4 150 South Pass 9040 .1 .0 * .4 .2 200 ----- ----- Basin Index (%) * 212 LOWER N. PLATTE Casper Mtn. 7920 .1 .0 * .9 .1 900 Laprele Creek 8390 .1 .0 * .1 .1 100 Reno Hill 8430 .0 .0 * .2 .1 200 Windy Peak 7915 .2 .0 * .0 .1 0 ----- ----- Basin Index (%) * 300 LARAMIE RIVER Brooklyn Lake 10250 .1 .0 * .3 .1 300 Cinnabar Park 9707 .0 .0 * .4 .3 133 Crow Creek 8335 .0 .0 * .7 .2 350 Deadman Hill 10239 .2 .0 * .0 .2 0 Rawah 9069 .0 .0 * .3 .3 100 Roach 9740 .2 .0 * .3 .2 150 Windy Peak 7915 .2 .0 * .0 .1 0 ----- ----- Basin Index (%) * 143 S. PLATTE Crow Creek 8335 .0 .0 * .7 .2 350 ----- ----- Basin Index (%) * 350 LITTLE SNAKE RIVER Battle Mountain 7498 .1 .0 * .2 .2 100 Divide Peak 8730 .1 .0 * .8 .2 400 Elk River 8739 .3 .0 * .2 .2 100 Elkhead Divide 8800 .1 -M * .4 -M * Little Snake River 8928 .1 .0 * .9 .5 180 Old Battle 9860 .3 .0 * .8 .2 400 Sage Creek Basin 7850 .1 .0 * .6 .2 300 Sandstone RS 8152 .0 .0 * .4 .1 400 Whiskey Park 9020 .1 .0 * .4 .3 133 ----- ----- Basin Index (%) * 226 UPPER GREEN RIVER Big Sandy Opening 9080 -M .0 * .9 .2 450 Blind Bull Sum 8650 .5 .0 * .9 .2 450 East Rim Divide 7930 -M .0 * .6 .1 600 Elkhart Park G.S. 9400 .5 .0 * 1.7 .2 850 Gros Ventre Summit 8750 -M .0 * .8 .2 400 Gunsight Pass 9820 .7 .0 * 1.2 .4 300 Indian Creek 9425 .7 .0 * 1.0 .2 500 Kendall R.S. 7740 .1 .0 * 1.1 .2 550 Larsen Creek 9000 -M .0 * .6 .4 150 Loomis Park 8240 .2 .0 * 1.0 .1 1000 New Fork Lake 8340 -M .0 * -M .1 * Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M .0 * .5 .1 500 Spring Creek Divide 9000 .4 .0 * 1.1 .2 550 Triple Peak 8500 -M .0 * 1.0 .4 250 ----- ----- Basin Index (%) * 428 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * .6 -M * Buck Pasture 9632 .0 -M * .8 -M * EF Blacks Fork GS 9360 .0 -M * .7 -M * Hams Fork 7840 -M .0 * .4 .1 400 Henrys Fork 10182 -M -M * 1.5 -M * Hewinta 9500 .1 .0 * .6 .3 200 Hickerson Park 9122 .0 .0 * 1.5 .2 750 Hole-in-Rock 9168 .0 .0 * 1.1 .1 1100 Indian Creek 9425 .7 .0 * 1.0 .2 500 Kelley R.S. 8180 .3 .0 * .6 .2 300 Spirit Lk 10235 .8 .0 * 1.9 .3 633 Steel Creek Park 10158 .0 .0 * .8 .3 267 ----- ----- Basin Index (%) * 465 UPPER BEAR RIVER Bear River RS 8777 .0 -M * .7 -M * Bug Lake 7987 .3 .0 * .9 .2 450 Burts Miller Ranch 8000 .1 .0 * .5 .1 500 Chalk Creek #1 9171 .2 .0 * 1.1 .4 275 Giveout 6930 -M .0 * .5 .2 250 Hayden Fork 9130 .0 .0 * 1.2 .3 400 Kelley R.S. 8180 .3 .0 * .6 .2 300 Lily Lake 9133 .1 .0 * 1.0 .2 500 Monte Cristo 8932 .0 .0 * 1.0 .3 333 Salt River Summit 7640 .0 .0 * .0 .2 0 Spring Creek Divide 9000 .4 .0 * 1.1 .2 550 Trial Lake 9992 1.0 .0 * 1.2 .3 400 ----- ----- Basin Index (%) * 350 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Median (or Average) 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 (or Average) represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median (or Average) value for those sites on this day. The TOTAL PRECIPITATION Percent of Median (or Average) represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Median (or Average) value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1991-2020. 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 or average for the day is less than 10% of the maximum median or average value for the year. * Basin - More than half of the stations for a basin with medians (or averages) report missing or invalid data The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians or averages 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.