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 14 , 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 * 1.4 1.0 140 Blind Bull Sum 8650 .0 .2 0* 1.0 .8 125 Cottonwood Creek 7670 .1 .0 * 2.7 1.2 225 East Rim Divide 7930 -M .0 * .8 .4 200 Grand Targhee 9260 1.4 1.5 93* 3.4 2.4 142 Granite Creek 6770 .0 .0 * 1.0 .6 167 Grassy Lake 7265 -M .0 * 2.1 1.3 162 Gros Ventre Summit 8750 .6 .1 600* 1.8 .8 225 Gunsight Pass 9820 1.6 .0 * 2.8 .9 311 Lewis Lake Divide 7850 .1 .0 * 1.2 1.3 92 Loomis Park 8240 .2 .0 * 1.2 .7 171 Phillips Bench 8200 .2 .0 * 1.8 1.1 164 Salt River Summit 7640 -M .0 * .6 .8 75 Snake River Station 6920 .0 .0 * 1.4 1.0 140 Somsen Ranch 6800 -M .0 * 2.0 .9 222 Spring Creek Divide 9000 .0 .2 0* 1.4 .8 175 Thumb Divide 7980 .2 .0 * .8 1.0 80 Togwotee Pass 9580 .9 1.0 90* 1.6 1.3 123 Triple Peak 8500 -M .0 * 1.2 .9 133 Two Ocean Plateau 9240 1.3 1.2 108* 2.3 1.4 164 Willow Creek 8080 -M .0 * 3.1 1.4 221 Younts Peak 8350 -M .2 * -M .9 * ----- ----- Basin Index (%) 157* 162 MADISON HEADWATERS IN WYOMING Black Bear 8170 .8 .8 100* 2.3 1.7 135 Canyon 7870 .1 -M * .9 -M * Madison Plateau 7750 .0 .2 0* 1.3 1.2 108 West Yellowstone 6700 .1 .0 * .8 .8 100 Whiskey Creek 6800 .0 .0 * 1.3 1.0 130 ----- ----- Basin Index (%) 90* 121 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 1.2 1.0 120* 1.6 1.0 160 Canyon 7870 .1 -M * .9 -M * Evening Star 9200 1.8 .8 225* 3.2 1.6 200 Fisher Creek 9100 .3 .9 33* 1.5 1.4 107 Monument Peak 8850 1.0 .6 167* 2.2 1.4 157 Northeast Entrance 7350 .0 .0 * .8 .7 114 Parker Peak 9400 1.2 1.0 120* 2.5 1.4 179 Sylvan Lake 8420 .3 .4 75* 3.0 1.5 200 Thumb Divide 7980 .2 .0 * .8 1.0 80 Two Ocean Plateau 9240 1.3 1.2 108* 2.3 1.4 164 White Mill 8700 .3 .6 50* 1.3 1.0 130 Wolverine 7650 .2 .0 * 1.8 .9 200 ----- ----- Basin Index (%) 120* 158 WIND RIVER Burroughs Creek 8750 .0 -M * 1.0 -M * Castle Creek 8400 .6 .0 * 1.3 .6 217 Cold Springs 9630 1.3 .0 * 1.8 .7 257 Deer Park 9700 1.0 .5 200* 1.8 1.2 150 Hobbs Park 10100 2.7 .6 450* 3.4 .8 425 Kirwin 9550 2.6 .6 433* 3.3 1.0 330 Little Warm 9370 1.0 .0 * 1.8 .8 225 South Pass 9040 .8 .1 800* 1.6 1.0 160 St. Lawrence Alt 8620 .9 -M * 1.9 -M * Togwotee Pass 9580 .9 1.0 90* 1.6 1.3 123 Townsend Creek 8700 1.5 .0 * 2.9 .9 322 ----- ----- Basin Index (%) 443* 235 BIGHORN BASIN Bald Mtn. 9380 1.7 1.5 113* 2.2 1.4 157 Bear Trap Meadow 8200 1.2 .0 * 2.6 1.0 260 Bone Springs Div 9350 1.2 1.0 120* 2.6 1.3 200 Grave Springs 8550 .5 .0 * 1.8 .8 225 Kirwin 9550 2.6 .6 433* 3.3 1.0 330 Marquette 8760 -M .1 * -M 1.2 * Middle Powder 7760 .8 .3 267* 2.9 1.0 290 Owl Creek 8975 1.0 .0 * 1.8 .8 225 Powder River Pass 9480 1.0 .4 250* 2.2 1.1 200 Shell Creek 9580 2.0 1.4 143* 2.8 1.2 233 Timber Creek 7950 -M .0 * 4.2 1.0 420 ----- ----- Basin Index (%) 231* 249 SHOSHONE RIVER Blackwater 9780 2.2 1.1 200* 2.5 1.5 167 Evening Star 9200 1.8 .8 225* 3.2 1.6 200 Marquette 8760 -M .1 * -M 1.2 * Sylvan Lake 8420 .3 .4 75* 3.0 1.5 200 Sylvan Road 7120 .0 .0 * 2.1 1.0 210 Younts Peak 8350 -M .2 * -M .9 * ----- ----- Basin Index (%) 187* 193 POWDER RIVER Bear Trap Meadow 8200 1.2 .0 * 2.6 1.0 260 Cloud Peak Reservoir 9860 3.9 .6 650* 4.9 1.4 350 Grave Springs 8550 .5 .0 * 1.8 .8 225 Hansen Sawmill 8360 2.4 .0 * 2.5 .9 278 Middle Powder 7760 .8 .3 267* 2.9 1.0 290 Powder River Pass 9480 1.0 .4 250* 2.2 1.1 200 Soldier Park 8720 2.5 .0 * 3.3 1.2 275 ----- ----- Basin Index (%) 946* 273 TONGUE RIVER Big Goose 7990 -M .4 * 3.9 1.2 325 Bone Springs Div 9350 1.2 1.0 120* 2.6 1.3 200 Burgess Junction 7880 2.1 .4 525* 4.1 1.2 342 Dome Lake 8880 2.5 .4 625* 3.7 1.2 308 Little Goose 8870 3.0 .4 750* 4.2 1.4 300 Sucker Creek 8880 2.9 .6 483* 4.2 1.1 382 Tie Creek 6870 -M .0 * -M 1.0 * ----- ----- Basin Index (%) 418* 307 BELLE FOURCHE Blind Park 6890 .3 .0 * 1.7 1.0 170 Cole Canyon 5910 .0 .0 * 1.2 .8 150 North Rapid Creek 6130 .0 .0 * 2.3 .7 329 ----- ----- Basin Index (%) * 208 CHEYENNE RIVER BASIN Blind Park 6890 .3 .0 * 1.7 1.0 170 North Rapid Creek 6130 .0 .0 * 2.3 .7 329 ----- ----- Basin Index (%) * 235 UPPER N. PLATTE Arapaho Ridge 10976 .7 .7 100* 1.2 1.1 109 Blackhall Mtn 9839 1.4 .8 175* 2.3 1.4 164 Cinnabar Park 9707 .2 .3 67* 1.0 .9 111 Columbine 9167 .3 .0 * 1.0 1.4 71 Divide Peak 8730 1.2 .0 * 2.7 1.4 193 Joe Wright 10158 1.2 .4 300* 1.8 1.6 112 Laprele Creek 8390 1.7 .0 * 2.7 .7 386 Med Bow 10512 1.2 -M * 2.2 -M * Never Summer 10323 1.3 .8 162* 1.3 1.4 93 North French Creek 10153 .8 .6 133* 1.8 1.4 129 Old Battle 9860 .8 .6 133* 1.7 1.5 113 Rawah 9069 1.1 .0 * 1.7 1.4 121 Sage Creek Basin 7850 .6 .0 * 1.5 1.0 150 Sand Lake 10098 1.7 .8 212* 1.8 1.2 150 South Brush Creek 8495 .5 .0 * 1.2 .8 150 Tower 10620 1.9 .8 238* 2.1 1.9 111 Webber Springs 9260 .5 .0 * 1.1 1.2 92 Whiskey Park 9020 .6 .0 * 1.4 1.4 100 Willow Creek Pass 9523 .9 .0 * 1.1 .8 138 Zirkel 9338 .5 .0 * 1.1 1.7 65 ----- ----- Basin Index (%) 309* 126 SWEETWATER Deer Park 9700 1.0 .5 200* 1.8 1.2 150 Larsen Creek 9000 -M .0 * 1.1 .7 157 South Pass 9040 .8 .1 800* 1.6 1.0 160 ----- ----- Basin Index (%) 300* 155 LOWER N. PLATTE Casper Mtn. 7920 4.1 .2 2050* 5.4 1.0 540 Laprele Creek 8390 1.7 .0 * 2.7 .7 386 Reno Hill 8430 2.5 .2 1250* 4.2 1.0 420 Windy Peak 7915 1.4 .0 * 1.7 .6 283 ----- ----- Basin Index (%) 2425* 424 LARAMIE RIVER Brooklyn Lake 10250 .5 .0 * .9 .8 112 Cinnabar Park 9707 .2 .3 67* 1.0 .9 111 Crow Creek 8335 .4 .0 * 1.6 .7 229 Deadman Hill 10239 1.4 .6 233* 1.3 1.0 130 Rawah 9069 1.1 .0 * 1.7 1.4 121 Roach 9740 .8 .1 800* 1.2 1.0 120 Windy Peak 7915 1.4 .0 * 1.7 .6 283 ----- ----- Basin Index (%) 580* 147 S. PLATTE Crow Creek 8335 .4 .0 * 1.6 .7 229 ----- ----- Basin Index (%) * 229 LITTLE SNAKE RIVER Battle Mountain 7498 .4 .0 * 1.5 .9 167 Divide Peak 8730 1.2 .0 * 2.7 1.4 193 Elk River 8739 .8 .0 * 1.1 1.2 92 Elkhead Divide 8800 .4 -M * -M -M * Little Snake River 8928 .2 .0 * 1.7 1.8 94 Old Battle 9860 .8 .6 133* 1.7 1.5 113 Sage Creek Basin 7850 .6 .0 * 1.5 1.0 150 Sandstone RS 8152 .5 .0 * 1.1 1.0 110 Whiskey Park 9020 .6 .0 * 1.4 1.4 100 ----- ----- Basin Index (%) 850* 125 UPPER GREEN RIVER Big Sandy Opening 9080 -M .2 * 1.2 1.0 120 Blind Bull Sum 8650 .0 .2 0* 1.0 .8 125 East Rim Divide 7930 -M .0 * .8 .4 200 Elkhart Park G.S. 9400 .0 .0 * 2.0 1.0 200 Gros Ventre Summit 8750 .6 .1 600* 1.8 .8 225 Gunsight Pass 9820 1.6 .0 * 2.8 .9 311 Indian Creek 9425 .5 .2 250* 1.4 .8 175 Kendall R.S. 7740 .1 .0 * 1.5 .5 300 Larsen Creek 9000 -M .0 * 1.1 .7 157 Loomis Park 8240 .2 .0 * 1.2 .7 171 New Fork Lake 8340 -M .0 * .2 .6 33 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M .0 * .5 .6 83 Spring Creek Divide 9000 .0 .2 0* 1.4 .8 175 Triple Peak 8500 -M .0 * 1.2 .9 133 ----- ----- Basin Index (%) 429* 172 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 1.4 -M * Buck Pasture 9632 .4 -M * 1.7 -M * EF Blacks Fork GS 9360 .4 -M * 1.5 -M * Hams Fork 7840 -M .0 * .5 .4 125 Henrys Fork 10182 -M -M * 2.0 -M * Hewinta 9500 .0 .0 * 1.3 .9 144 Hickerson Park 9122 .0 .0 * 2.4 .6 400 Hole-in-Rock 9168 .0 .0 * 1.6 .8 200 Indian Creek 9425 .5 .2 250* 1.4 .8 175 Kelley R.S. 8180 .3 .0 * 1.0 .6 167 Spirit Lk 10235 .4 .0 * 2.6 1.0 260 Steel Creek Park 10158 .8 .0 * 1.9 1.0 190 ----- ----- Basin Index (%) 1000* 208 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 1.1 -M * Bug Lake 7987 .3 .0 * 1.2 .6 200 Burts Miller Ranch 8000 .1 .0 * 1.1 .3 367 Chalk Creek #1 9171 .5 .0 * 2.0 1.2 167 Giveout 6930 -M .0 * .6 .6 100 Hayden Fork 9130 .0 .0 * 2.1 1.0 210 Kelley R.S. 8180 .3 .0 * 1.0 .6 167 Lily Lake 9133 .0 .0 * 1.6 1.1 145 Monte Cristo 8932 .1 .0 * 1.8 .8 225 Salt River Summit 7640 -M .0 * .6 .8 75 Spring Creek Divide 9000 .0 .2 0* 1.4 .8 175 Trial Lake 9992 .2 .0 * 1.8 .9 200 ----- ----- Basin Index (%) 750* 175 ----------------------------------------------------------------------------- -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.