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 SATURDAY: OCTOBER 7 , 2023 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 -M .0 * .9 .5 180 Blind Bull Sum 8650 .0 .0 * .9 .4 225 Cottonwood Creek 7670 .1 .0 * 2.2 .4 550 East Rim Divide 7930 -M .0 * .5 .1 500 Grand Targhee 9260 1.1 .6 183* 2.2 1.3 169 Granite Creek 6770 .0 .0 * .9 .4 225 Grassy Lake 7265 -M .0 * 1.0 .8 125 Gros Ventre Summit 8750 -M .0 * .8 .4 200 Gunsight Pass 9820 .2 .0 * 1.1 .6 183 Lewis Lake Divide 7850 .1 .0 * .5 .6 83 Loomis Park 8240 .2 .0 * 1.0 .4 250 Phillips Bench 8200 .2 .0 * 1.6 .4 400 Salt River Summit 7640 .0 .0 * .2 .3 67 Snake River Station 6920 .0 .0 * .7 .5 140 Somsen Ranch 6800 -M .0 * 1.6 .4 400 Spring Creek Divide 9000 .4 .0 * 1.1 .4 275 Thumb Divide 7980 .1 .0 * .4 .5 80 Togwotee Pass 9580 .1 .0 * .5 .6 83 Triple Peak 8500 -M .0 * .8 .5 160 Two Ocean Plateau 9240 -M .4 * .9 .8 112 Willow Creek 8080 -M .0 * 2.3 .8 288 Younts Peak 8350 -M .0 * -M .4 * ----- ----- Basin Index (%) 417* 199 MADISON HEADWATERS IN WYOMING Black Bear 8170 .0 .1 0* .8 .6 133 Canyon 7870 .1 -M * .6 -M * Madison Plateau 7750 .0 .0 * .7 .5 140 West Yellowstone 6700 .0 .0 * .5 .3 167 Whiskey Creek 6800 .0 .0 * .7 .4 175 ----- ----- Basin Index (%) 0* 150 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 .0 .4 0* .4 .4 100 Canyon 7870 .1 -M * .6 -M * Evening Star 9200 .0 .0 * 1.0 .6 167 Fisher Creek 9100 .0 .0 * .7 .7 100 Monument Peak 8850 .0 .0 * .8 .6 133 Northeast Entrance 7350 .0 .0 * .4 .3 133 Parker Peak 9400 .4 .2 200* .9 .4 225 Sylvan Lake 8420 .0 .0 * 1.7 .8 212 Thumb Divide 7980 .1 .0 * .4 .5 80 Two Ocean Plateau 9240 -M .4 * .9 .8 112 White Mill 8700 .0 .0 * .6 .4 150 Wolverine 7650 .0 .0 * .4 .4 100 ----- ----- Basin Index (%) 83* 139 WIND RIVER Burroughs Creek 8750 .0 -M * .6 -M * Castle Creek 8400 .0 .0 * .1 .4 25 Cold Springs 9630 .0 .0 * .3 .2 150 Deer Park 9700 .0 .0 * .7 .5 140 Hobbs Park 10100 .1 .2 50* .5 .4 125 Kirwin 9550 .0 .0 * .4 .6 67 Little Warm 9370 .0 .0 * .5 .4 125 South Pass 9040 .0 .0 * .4 .4 100 St. Lawrence Alt 8620 .0 -M * .2 -M * Togwotee Pass 9580 .1 .0 * .5 .6 83 Townsend Creek 8700 .0 .0 * .8 .4 200 ----- ----- Basin Index (%) 100* 108 BIGHORN BASIN Bald Mtn. 9380 .4 .5 80* .9 .5 180 Bear Trap Meadow 8200 .1 .0 * .8 .4 200 Bone Springs Div 9350 .5 .4 125* 1.3 .6 217 Grave Springs 8550 .0 .0 * .6 .4 150 Kirwin 9550 .0 .0 * .4 .6 67 Marquette 8760 .0 .2 0* .4 .4 100 Middle Powder 7760 .1 .1 100* 1.1 .4 275 Owl Creek 8975 .0 .0 * .6 .3 200 Powder River Pass 9480 -M .1 * -M .6 * Shell Creek 9580 .8 .9 89* 1.4 .7 200 Timber Creek 7950 .0 .1 0* .0 .7 0 ----- ----- Basin Index (%) 86* 150 SHOSHONE RIVER Blackwater 9780 .0 .3 0* .2 .6 33 Evening Star 9200 .0 .0 * 1.0 .6 167 Marquette 8760 .0 .2 0* .4 .4 100 Sylvan Lake 8420 .0 .0 * 1.7 .8 212 Sylvan Road 7120 .0 .0 * 1.1 .4 275 Younts Peak 8350 -M .0 * -M .4 * ----- ----- Basin Index (%) 0* 157 POWDER RIVER Bear Trap Meadow 8200 .1 .0 * .8 .4 200 Cloud Peak Reservoir 9860 .0 .1 0* .6 .8 75 Grave Springs 8550 .0 .0 * .6 .4 150 Hansen Sawmill 8360 .0 .0 * .0 .5 0 Middle Powder 7760 .1 .1 100* 1.1 .4 275 Powder River Pass 9480 -M .1 * -M .6 * Soldier Park 8720 .0 .1 0* .4 .7 57 ----- ----- Basin Index (%) 67* 109 TONGUE RIVER Big Goose 7990 .1 .2 50* .6 .5 120 Bone Springs Div 9350 .5 .4 125* 1.3 .6 217 Burgess Junction 7880 .0 .2 0* 1.1 .6 183 Dome Lake 8880 .0 .0 * .6 .6 100 Little Goose 8870 .1 .2 50* .7 .6 117 Sucker Creek 8880 .0 .0 * .9 .4 225 Tie Creek 6870 .1 .0 * .8 .6 133 ----- ----- Basin Index (%) 80* 154 BELLE FOURCHE Blind Park 6890 .1 .0 * .6 .4 150 Cole Canyon 5910 .0 .0 * .6 .2 300 North Rapid Creek 6130 .0 .0 * .6 .3 200 ----- ----- Basin Index (%) * 200 CHEYENNE RIVER BASIN Blind Park 6890 .1 .0 * .6 .4 150 North Rapid Creek 6130 .0 .0 * .6 .3 200 ----- ----- Basin Index (%) * 171 UPPER N. PLATTE Arapaho Ridge 10976 .0 .2 0* .2 .5 40 Blackhall Mtn 9839 .1 .0 * .5 .7 71 Cinnabar Park 9707 .0 .0 * .5 .6 83 Columbine 9167 -M .0 * -M .5 * Divide Peak 8730 .0 .0 * .7 .4 175 Joe Wright 10158 .0 .0 * .4 .4 100 Laprele Creek 8390 .1 .0 * .1 .2 50 Med Bow 10512 .0 -M * .8 -M * Never Summer 10323 .1 .0 * .2 .6 33 North French Creek 10153 -M .0 * .5 .4 125 Old Battle 9860 .2 .0 * .8 .5 160 Rawah 9069 -M .0 * .3 .6 50 Sage Creek Basin 7850 .1 .0 * .5 .4 125 Sand Lake 10098 .1 .0 * .1 .4 25 South Brush Creek 8495 -M .0 * .3 .3 100 Tower 10620 .1 .0 * .1 .7 14 Webber Springs 9260 .1 .0 * .5 .4 125 Whiskey Park 9020 .0 .0 * .3 .4 75 Willow Creek Pass 9523 .1 .0 * .2 .4 50 Zirkel 9338 .1 .0 * .0 .6 0 ----- ----- Basin Index (%) 550* 73 SWEETWATER Deer Park 9700 .0 .0 * .7 .5 140 Larsen Creek 9000 -M .0 * .6 .6 100 South Pass 9040 .0 .0 * .4 .4 100 ----- ----- Basin Index (%) * 113 LOWER N. PLATTE Casper Mtn. 7920 .2 .0 * .9 .2 450 Laprele Creek 8390 .1 .0 * .1 .2 50 Reno Hill 8430 -M .0 * .2 .3 67 Windy Peak 7915 .2 .0 * .0 .2 0 ----- ----- Basin Index (%) * 133 LARAMIE RIVER Brooklyn Lake 10250 .0 .0 * .3 .2 150 Cinnabar Park 9707 .0 .0 * .5 .6 83 Crow Creek 8335 .0 .0 * .7 .3 233 Deadman Hill 10239 .2 .0 * .0 .4 0 Rawah 9069 -M .0 * .3 .6 50 Roach 9740 .1 .0 * .3 .4 75 Windy Peak 7915 .2 .0 * .0 .2 0 ----- ----- Basin Index (%) * 78 S. PLATTE Crow Creek 8335 .0 .0 * .7 .3 233 ----- ----- Basin Index (%) * 233 LITTLE SNAKE RIVER Battle Mountain 7498 .0 .0 * .2 .4 50 Divide Peak 8730 .0 .0 * .7 .4 175 Elk River 8739 .3 .0 * .2 .5 40 Elkhead Divide 8800 .0 -M * .5 -M * Little Snake River 8928 .0 .0 * .8 .7 114 Old Battle 9860 .2 .0 * .8 .5 160 Sage Creek Basin 7850 .1 .0 * .5 .4 125 Sandstone RS 8152 -M .0 * .4 .4 100 Whiskey Park 9020 .0 .0 * .3 .4 75 ----- ----- Basin Index (%) * 105 UPPER GREEN RIVER Big Sandy Opening 9080 -M .0 * .9 .5 180 Blind Bull Sum 8650 .0 .0 * .9 .4 225 East Rim Divide 7930 -M .0 * .5 .1 500 Elkhart Park G.S. 9400 .0 .0 * 1.7 .4 425 Gros Ventre Summit 8750 -M .0 * .8 .4 200 Gunsight Pass 9820 .2 .0 * 1.1 .6 183 Indian Creek 9425 .2 .0 * 1.0 .2 500 Kendall R.S. 7740 .0 .0 * 1.1 .2 550 Larsen Creek 9000 -M .0 * .6 .6 100 Loomis Park 8240 .2 .0 * 1.0 .4 250 New Fork Lake 8340 -M .0 * .0 .2 0 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M .0 * .4 .2 200 Spring Creek Divide 9000 .4 .0 * 1.1 .4 275 Triple Peak 8500 -M .0 * .8 .5 160 ----- ----- Basin Index (%) * 233 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * .6 -M * Buck Pasture 9632 .0 -M * .9 -M * EF Blacks Fork GS 9360 .0 -M * .7 -M * Hams Fork 7840 -M .0 * .3 .1 300 Henrys Fork 10182 -M -M * 1.4 -M * Hewinta 9500 .1 .0 * .6 .4 150 Hickerson Park 9122 .0 .0 * 1.6 .2 800 Hole-in-Rock 9168 .0 .0 * 1.0 .2 500 Indian Creek 9425 .2 .0 * 1.0 .2 500 Kelley R.S. 8180 .2 .0 * .6 .2 300 Spirit Lk 10235 .1 .0 * 1.9 .6 317 Steel Creek Park 10158 .0 .0 * .8 .4 200 ----- ----- Basin Index (%) * 339 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 .2 250 Chalk Creek #1 9171 .1 .0 * 1.2 .6 200 Giveout 6930 -M .0 * .6 .4 150 Hayden Fork 9130 .0 .0 * 1.1 .4 275 Kelley R.S. 8180 .2 .0 * .6 .2 300 Lily Lake 9133 .0 .0 * 1.0 .3 333 Monte Cristo 8932 .0 .0 * 1.0 .5 200 Salt River Summit 7640 .0 .0 * .2 .3 67 Spring Creek Divide 9000 .4 .0 * 1.1 .4 275 Trial Lake 9992 .0 .0 * 1.2 .3 400 ----- ----- Basin Index (%) * 247 ----------------------------------------------------------------------------- -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.