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 18 , 2025 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7040 .0 .0 * 3.3 1.2 275 Blind Bull Sum 8880 .0 .3 0* 1.6 1.0 160 Cottonwood Creek 7710 .0 .0 * 3.0 1.4 214 East Rim Divide 8010 .0 .0 * 1.7 .6 283 Grand Targhee 9260 1.8 2.4 75* 4.8 2.6 185 Granite Creek 6770 .0 .0 * 2.1 .8 262 Grassy Lake 7330 .0 .0 * 2.8 1.8 156 Gros Ventre Summit 8760 .0 .6 0* -M 1.0 * Gunsight Pass 9830 .8 .0 * 3.0 1.1 273 Lewis Lake Divide 7880 .1 .0 * 2.9 1.6 181 Loomis Park 8240 .0 .0 * 1.9 .9 211 Phillips Bench 8160 .0 .0 * 2.9 1.3 223 Salt River Summit 7630 .0 .0 * 1.9 .8 238 Snake River Station 6900 .0 .0 * 2.2 1.0 220 Somsen Ranch 6830 .0 .0 * 3.2 .9 356 Spring Creek Divide 9020 .2 .2 100* 2.4 1.0 240 Thumb Divide 7970 .1 .0 * 2.7 1.2 225 Togwotee Pass 9590 .7 1.4 50* 3.6 1.4 257 Triple Peak 8520 .2 .2 100* 2.1 1.2 175 Two Ocean Plateau 9240 1.8 1.8 100* 3.9 1.6 244 Willow Creek 8060 .0 .0 * 4.1 2.0 205 Younts Peak 8340 .3 .2 150* 4.5 1.0 450 ----- ----- Basin Index (%) 85* 230 MADISON HEADWATERS IN WYOMING Black Bear 8160 .8 1.2 67* 3.4 2.1 162 Canyon 7870 .2 .1 200* 2.1 1.2 175 Madison Plateau 7710 .1 .4 25* 3.1 1.7 182 West Yellowstone 6680 .1 .0 * 2.3 .8 288 Whiskey Creek 6790 .2 .0 * 3.0 1.2 250 ----- ----- Basin Index (%) 82* 199 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 1.2 1.2 100* 2.5 1.3 192 Canyon 7870 .2 .1 200* 2.1 1.2 175 Evening Star 9040 .7 1.0 70* 3.6 2.0 180 Fisher Creek 9110 1.6 1.4 114* 4.0 1.8 222 Monument Peak 8740 1.4 1.0 140* 3.8 1.6 238 Northeast Entrance 7420 .1 .0 * 2.7 .8 338 Parker Peak 9420 1.0 1.2 83* 3.1 1.6 194 Sylvan Lake 8440 .2 .6 33* 3.8 1.8 211 Thumb Divide 7970 .1 .0 * 2.7 1.2 225 Two Ocean Plateau 9240 1.8 1.8 100* 3.9 1.6 244 White Mill 8730 1.2 1.1 109* 3.2 1.4 229 Wolverine 7650 .0 .0 * 2.0 1.2 167 ----- ----- Basin Index (%) 101* 214 WIND RIVER Burroughs Creek 8760 .0 -M * 3.7 -M * Castle Creek 8410 .3 .0 * 1.8 .8 225 Cold Springs 9640 .0 .0 * 1.8 .8 225 Deer Park 9690 .7 .3 233* 1.4 1.3 108 Hobbs Park 10080 .0 .8 0* 1.4 1.0 140 Kirwin 9580 .6 .8 75* 3.3 1.2 275 Little Warm 9370 .5 .3 167* 2.7 1.0 270 South Pass 9040 .7 .0 * 1.2 1.1 109 St. Lawrence Alt 8610 .1 -M * 1.1 -M * Togwotee Pass 9590 .7 1.4 50* 3.6 1.4 257 Townsend Creek 8720 .3 .0 * 1.6 1.0 160 ----- ----- Basin Index (%) 106* 196 BIGHORN BASIN Bald Mtn. 9360 1.8 2.0 90* 3.8 1.7 224 Bear Trap Meadow 8200 .8 .2 400* 3.1 1.1 282 Bone Springs Div 9340 .4 1.3 31* 3.0 1.7 176 Grave Springs 8560 .6 .2 300* 3.2 1.0 320 Kirwin 9580 .6 .8 75* 3.3 1.2 275 Marquette 8800 .2 .3 67* 1.8 1.3 138 Middle Powder 7760 .9 .2 450* 3.1 1.2 258 Owl Creek 8990 .0 .2 0* 2.0 1.0 200 Powder River Pass 9480 .9 .7 129* 3.4 1.4 243 Shell Creek 9570 .7 1.8 39 3.1 1.4 221 Timber Creek 7910 .0 .0 * 2.1 1.2 175 ----- ----- Basin Index (%) 90* 225 SHOSHONE RIVER Blackwater 9840 1.5 1.5 100* 2.7 1.8 150 Evening Star 9040 .7 1.0 70* 3.6 2.0 180 Marquette 8800 .2 .3 67* 1.8 1.3 138 Sylvan Lake 8440 .2 .6 33* 3.8 1.8 211 Sylvan Road 7140 .1 .0 * 2.7 1.3 208 Younts Peak 8340 .3 .2 150* 4.5 1.0 450 ----- ----- Basin Index (%) 83* 208 POWDER RIVER Bear Trap Meadow 8200 .8 .2 400* 3.1 1.1 282 Cloud Peak Reservoir 9830 .1 .9 11* 2.5 1.7 147 Grave Springs 8560 .6 .2 300* 3.2 1.0 320 Hansen Sawmill 8360 .3 .0 * 3.4 1.2 283 Middle Powder 7760 .9 .2 450* 3.1 1.2 258 Powder River Pass 9480 .9 .7 129* 3.4 1.4 243 Soldier Park 8680 .1 .0 * 2.3 1.2 192 ----- ----- Basin Index (%) 168* 239 TONGUE RIVER Big Goose 8010 .4 .4 100* 2.3 1.3 177 Bone Springs Div 9340 .4 1.3 31* 3.0 1.7 176 Burgess Junction 7900 .3 .4 75* 2.7 1.3 208 Dome Lake 8890 .3 .7 43* 2.7 1.5 180 Little Goose 8560 .2 .0 * 2.3 1.4 164 Sucker Creek 8840 .3 .8 38* 2.6 1.4 186 Tie Creek 7050 .3 .0 * 2.4 1.1 218 ----- ----- Basin Index (%) 61* 186 BELLE FOURCHE Blind Park 6900 .1 .0 * 2.7 1.1 245 Cole Canyon 5930 .0 .0 * 2.9 1.0 290 North Rapid Creek 6150 .2 .0 * 2.0 .9 222 ----- ----- Basin Index (%) * 253 CHEYENNE RIVER BASIN Blind Park 6900 .1 .0 * 2.7 1.1 245 North Rapid Creek 6150 .2 .0 * 2.0 .9 222 ----- ----- Basin Index (%) * 235 UPPER N. PLATTE Arapaho Ridge 10960 .0 1.0 0* 1.6 1.6 100 Blackhall Mtn 9830 .1 .8 12* 2.5 2.0 125 Cinnabar Park 9670 .0 .3 0* 1.3 1.2 108 Columbine 9170 .4 .0 * 1.0 1.8 56 Divide Peak 8700 .3 .2 150* 2.1 1.6 131 Joe Wright 10140 .2 .4 50* 1.4 2.2 64 Laprele Creek 8370 .1 .0 * 2.7 .9 300 Med Bow 10500 .4 -M * 3.2 -M * Never Summer 10300 .2 .8 25* .9 1.7 53 North French Creek 10150 .4 .6 67* 2.7 1.8 150 Old Battle 9850 .4 .8 50* 4.3 1.8 239 Rawah 9100 .0 .0 * 1.3 1.6 81 Sage Creek Basin 7830 .1 .0 * 1.6 1.1 145 Sand Lake 10080 .4 1.1 36* 2.6 1.6 162 South Brush Creek 8480 .0 .0 * 1.5 .9 167 Tower 10610 .0 .8 0* 2.0 2.0 100 Webber Springs 9250 .2 .2 100* 3.0 1.6 188 Whiskey Park 8950 .0 .0 * 3.0 1.8 167 Willow Creek Pass 9520 .1 .2 50* 1.1 1.0 110 Zirkel 9320 .1 .0 * 2.0 2.2 91 ----- ----- Basin Index (%) 42* 127 SWEETWATER Deer Park 9690 .7 .3 233* 1.4 1.3 108 Larsen Creek 8880 .5 .0 * 1.4 .8 175 South Pass 9040 .7 .0 * 1.2 1.1 109 ----- ----- Basin Index (%) 633* 125 LOWER N. PLATTE Casper Mtn. 7940 .2 .2 100* 1.8 1.0 180 Laprele Creek 8370 .1 .0 * 2.7 .9 300 Reno Hill 8410 .0 .4 0* 1.7 1.2 142 Windy Peak 7900 .0 .0 * 2.5 .7 357 ----- ----- Basin Index (%) 50* 229 LARAMIE RIVER Brooklyn Lake 10250 .2 .0 * 1.4 1.0 140 Cinnabar Park 9670 .0 .3 0* 1.3 1.2 108 Crow Creek 8320 .0 .0 * 1.3 .8 162 Deadman Hill 10240 .3 1.0 30* .9 1.2 75 Rawah 9100 .0 .0 * 1.3 1.6 81 Roach 9710 .2 .3 67* 1.2 1.1 109 Windy Peak 7900 .0 .0 * 2.5 .7 357 ----- ----- Basin Index (%) 44* 130 S. PLATTE Crow Creek 8320 .0 .0 * 1.3 .8 162 ----- ----- Basin Index (%) * 162 LITTLE SNAKE RIVER Battle Mountain 7460 .2 .0 * 2.5 1.0 250 Divide Peak 8700 .3 .2 150* 2.1 1.6 131 Elk River 8710 .2 .0 * 3.3 1.4 236 Elkhead Divide 8780 .0 -M * 3.4 -M * Little Snake River 8930 .0 .0 * 3.2 2.3 139 Old Battle 9850 .4 .8 50* 4.3 1.8 239 Sage Creek Basin 7830 .1 .0 * 1.6 1.1 145 Sandstone RS 8150 .0 .0 * 2.4 1.1 218 Whiskey Park 8950 .0 .0 * 3.0 1.8 167 ----- ----- Basin Index (%) 120* 185 UPPER GREEN RIVER Big Sandy Opening 9100 .7 .4 175* 1.1 1.0 110 Blind Bull Sum 8880 .0 .3 0* 1.6 1.0 160 East Rim Divide 8010 .0 .0 * 1.7 .6 283 Elkhart Park G.S. 9410 .0 .0 * 2.1 1.2 175 Gros Ventre Summit 8760 .0 .6 0* -M 1.0 * Gunsight Pass 9830 .8 .0 * 3.0 1.1 273 Indian Creek 9400 .5 .4 125* 2.8 1.0 280 Kendall R.S. 7790 .1 .0 * 2.4 .8 300 Larsen Creek 8880 .5 .0 * 1.4 .8 175 Loomis Park 8240 .0 .0 * 1.9 .9 211 New Fork Lake 8380 .0 .0 * -M .7 * Pocket Creek 9370 -M -M * -M -M * Snider Basin 8080 .0 .0 * 1.1 .6 183 Spring Creek Divide 9020 .2 .2 100* 2.4 1.0 240 Triple Peak 8520 .2 .2 100* 2.1 1.2 175 ----- ----- Basin Index (%) 143* 211 LOWER GREEN RIVER Blacks Fork Jct 8880 .9 -M * 1.7 -M * Buck Pasture 9620 .7 -M * 2.6 -M * EF Blacks Fork GS 9360 1.1 -M * 2.0 -M * Hams Fork 7870 .0 .0 * 1.3 .6 217 Henrys Fork 10180 -M -M * 2.9 -M * Hewinta 9510 1.0 .0 * 2.2 1.0 220 Hickerson Park 9130 .8 .0 * 2.3 .7 329 Hole-in-Rock 9170 .8 .0 * 2.8 .9 311 Indian Creek 9400 .5 .4 125* 2.8 1.0 280 Kelley R.S. 8240 .1 .0 * 2.7 .7 386 Spirit Lk 10240 .6 .0 * 4.2 1.1 382 Steel Creek Park 10140 1.3 .4 325* 2.7 1.0 270 ----- ----- Basin Index (%) 638* 300 UPPER BEAR RIVER Bear River RS 8510 .0 -M * 1.7 -M * Bug Lake 7980 .0 .0 * 2.7 .7 386 Burts Miller Ranch 7900 .3 .0 * 1.8 .6 300 Chalk Creek #1 9160 1.2 .0 * 3.4 1.3 262 Giveout 6940 .0 .0 * 1.9 .8 238 Hayden Fork 9160 .0 .0 * 2.3 1.2 192 Kelley R.S. 8240 .1 .0 * 2.7 .7 386 Lily Lake 9130 .5 .0 * 2.1 1.1 191 Monte Cristo 8930 .7 .0 * 3.9 1.1 355 Salt River Summit 7630 .0 .0 * 1.9 .8 238 Spring Creek Divide 9020 .2 .2 100* 2.4 1.0 240 Trial Lake 9970 1.2 .0 * 2.3 1.2 192 ----- ----- Basin Index (%) 2100* 261 ---------------------------------------------------------------------------- -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.