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 MONDAY: OCTOBER 20 , 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 * 3.7 1.4 264 Blind Bull Sum 8880 .1 .6 17* 1.5 1.0 150 Cottonwood Creek 7710 .0 .0 * 3.3 1.5 220 East Rim Divide 8010 .0 .0 * 1.8 .6 300 Grand Targhee 9260 2.4 2.4 100* 5.3 2.8 189 Granite Creek 6770 .0 .0 * 2.5 1.0 250 Grassy Lake 7330 .0 .0 * 3.5 2.0 175 Gros Ventre Summit 8760 .2 .8 25* -M 1.0 * Gunsight Pass 9830 1.0 .2 500* 3.2 1.2 267 Lewis Lake Divide 7880 .2 .0 * 3.5 1.7 206 Loomis Park 8240 .1 .0 * 2.1 1.2 175 Phillips Bench 8160 .0 .0 * 3.2 1.4 229 Salt River Summit 7630 .0 .0 * 2.0 1.0 200 Snake River Station 6900 .0 .0 * 2.9 1.3 223 Somsen Ranch 6830 .1 .0 * 3.4 1.1 309 Spring Creek Divide 9020 .2 .5 40* 2.5 1.2 208 Thumb Divide 7970 .3 .0 * 3.2 1.3 246 Togwotee Pass 9590 1.3 1.4 93* 4.3 2.0 215 Triple Peak 8520 .4 .2 200* 2.5 1.2 208 Two Ocean Plateau 9240 2.6 2.0 130* 4.4 1.6 275 Willow Creek 8060 .0 .0 * 4.4 2.2 200 Younts Peak 8340 .4 .5 80* 5.0 1.1 455 ----- ----- Basin Index (%) 108* 229 MADISON HEADWATERS IN WYOMING Black Bear 8160 1.6 1.6 100* 4.3 2.4 179 Canyon 7870 .2 .2 100* 2.6 1.4 186 Madison Plateau 7710 .0 .6 0* 3.5 1.8 194 West Yellowstone 6680 .1 .0 * 2.6 1.0 260 Whiskey Creek 6790 .2 .0 * 3.3 1.2 275 ----- ----- Basin Index (%) 88* 209 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 1.8 1.4 129* 3.1 1.4 221 Canyon 7870 .2 .2 100* 2.6 1.4 186 Evening Star 9040 1.3 1.2 108* 4.2 2.1 200 Fisher Creek 9110 2.0 1.4 143* 4.5 1.9 237 Monument Peak 8740 1.9 1.1 173* 4.3 1.7 253 Northeast Entrance 7420 .1 .0 * 3.2 1.0 320 Parker Peak 9420 1.5 1.2 125* 3.6 1.8 200 Sylvan Lake 8440 .5 .8 62* 4.3 2.0 215 Thumb Divide 7970 .3 .0 * 3.2 1.3 246 Two Ocean Plateau 9240 2.6 2.0 130* 4.4 1.6 275 White Mill 8730 1.5 1.0 150* 3.5 1.4 250 Wolverine 7650 .0 .0 * 2.4 1.3 185 ----- ----- Basin Index (%) 133* 229 WIND RIVER Burroughs Creek 8760 .0 -M * 3.9 -M * Castle Creek 8410 .3 .0 * 1.9 .9 211 Cold Springs 9640 .1 .0 * 2.0 1.0 200 Deer Park 9690 .6 .7 86* 1.4 1.4 100 Hobbs Park 10080 .1 .9 11* 1.7 1.2 142 Kirwin 9580 1.0 1.0 100* 3.6 1.2 300 Little Warm 9370 .6 .4 150* 2.9 1.2 242 South Pass 9040 .6 .2 300* 1.3 1.1 118 St. Lawrence Alt 8610 .0 -M * 1.4 -M * Togwotee Pass 9590 1.3 1.4 93* 4.3 2.0 215 Townsend Creek 8720 .1 .0 * 1.7 1.2 142 ----- ----- Basin Index (%) 102* 186 BIGHORN BASIN Bald Mtn. 9360 2.3 2.0 115* 4.1 1.8 228 Bear Trap Meadow 8200 1.0 .1 1000* 3.7 1.2 308 Bone Springs Div 9340 .7 1.4 50* 3.2 1.8 178 Grave Springs 8560 1.0 .2 500* 3.6 1.0 360 Kirwin 9580 1.0 1.0 100* 3.6 1.2 300 Marquette 8800 .5 .2 250* 2.1 1.4 150 Middle Powder 7760 1.6 .2 800* 4.1 1.3 315 Owl Creek 8990 .0 .1 0* 2.1 1.0 210 Powder River Pass 9480 1.2 .8 150* 3.9 1.4 279 Shell Creek 9570 1.2 1.8 67 3.6 1.6 225 Timber Creek 7910 .0 .0 * 2.0 1.2 167 ----- ----- Basin Index (%) 135* 242 SHOSHONE RIVER Blackwater 9840 2.4 1.6 150* 3.4 1.9 179 Evening Star 9040 1.3 1.2 108* 4.2 2.1 200 Marquette 8800 .5 .2 250* 2.1 1.4 150 Sylvan Lake 8440 .5 .8 62* 4.3 2.0 215 Sylvan Road 7140 .1 .0 * 3.2 1.4 229 Younts Peak 8340 .4 .5 80* 5.0 1.1 455 ----- ----- Basin Index (%) 121* 224 POWDER RIVER Bear Trap Meadow 8200 1.0 .1 1000* 3.7 1.2 308 Cloud Peak Reservoir 9830 .5 .9 56* 3.2 1.8 178 Grave Springs 8560 1.0 .2 500* 3.6 1.0 360 Hansen Sawmill 8360 .3 .0 * 3.8 1.2 317 Middle Powder 7760 1.6 .2 800* 4.1 1.3 315 Powder River Pass 9480 1.2 .8 150* 3.9 1.4 279 Soldier Park 8680 .1 .0 * 2.4 1.3 185 ----- ----- Basin Index (%) 259* 268 TONGUE RIVER Big Goose 8010 .3 .2 150* 2.6 1.4 186 Bone Springs Div 9340 .7 1.4 50* 3.2 1.8 178 Burgess Junction 7900 .5 .5 100* 3.1 1.4 221 Dome Lake 8890 .5 .8 62* 3.1 1.5 207 Little Goose 8560 .4 .0 * 2.7 1.5 180 Sucker Creek 8840 .6 .8 75* 3.1 1.5 207 Tie Creek 7050 .2 .0 * 2.8 1.2 233 ----- ----- Basin Index (%) 86* 200 BELLE FOURCHE Blind Park 6900 .2 .0 * 3.0 1.1 273 Cole Canyon 5930 .0 .0 * 3.1 1.0 310 North Rapid Creek 6150 .2 .0 * 2.2 .9 244 ----- ----- Basin Index (%) * 277 CHEYENNE RIVER BASIN Blind Park 6900 .2 .0 * 3.0 1.1 273 North Rapid Creek 6150 .2 .0 * 2.2 .9 244 ----- ----- Basin Index (%) * 260 UPPER N. PLATTE Arapaho Ridge 10960 .0 1.0 0* 1.6 1.6 100 Blackhall Mtn 9830 .1 1.2 8* 2.6 2.4 108 Cinnabar Park 9670 .1 .5 20* 1.4 1.5 93 Columbine 9170 .4 .0 * 1.3 1.8 72 Divide Peak 8700 .5 .2 250* 2.4 1.8 133 Joe Wright 10140 .1 .4 25* 1.3 2.3 57 Laprele Creek 8370 .2 .0 * 2.9 1.0 290 Med Bow 10500 .9 -M * 3.5 -M * Never Summer 10300 .3 1.0 30* .9 1.8 50 North French Creek 10150 .6 .8 75* 3.0 2.0 150 Old Battle 9850 .5 1.2 42* 4.5 2.3 196 Rawah 9100 .0 .0 * 1.3 1.6 81 Sage Creek Basin 7830 .2 .0 * 1.7 1.1 155 Sand Lake 10080 .8 1.4 57* 2.9 1.7 171 South Brush Creek 8480 .2 .0 * 1.6 1.0 160 Tower 10610 .0 1.0 0* 2.1 2.3 91 Webber Springs 9250 .2 .4 50* 3.1 1.8 172 Whiskey Park 8950 .2 .2 100* 3.0 1.8 167 Willow Creek Pass 9520 .1 .2 50* 1.0 1.2 83 Zirkel 9320 .1 .0 * 2.1 2.2 95 ----- ----- Basin Index (%) 48* 123 SWEETWATER Deer Park 9690 .6 .7 86* 1.4 1.4 100 Larsen Creek 8880 .4 .0 * 1.4 .8 175 South Pass 9040 .6 .2 300* 1.3 1.1 118 ----- ----- Basin Index (%) 178* 124 LOWER N. PLATTE Casper Mtn. 7940 .3 .0 * 2.2 1.2 183 Laprele Creek 8370 .2 .0 * 2.9 1.0 290 Reno Hill 8410 .2 .6 33* 2.3 1.3 177 Windy Peak 7900 .0 .0 * 2.6 1.0 260 ----- ----- Basin Index (%) 117* 222 LARAMIE RIVER Brooklyn Lake 10250 .4 .2 200* 1.8 1.0 180 Cinnabar Park 9670 .1 .5 20* 1.4 1.5 93 Crow Creek 8320 .1 .0 * 1.3 1.0 130 Deadman Hill 10240 .3 1.2 25* .9 1.3 69 Rawah 9100 .0 .0 * 1.3 1.6 81 Roach 9710 .1 .5 20* 1.2 1.2 100 Windy Peak 7900 .0 .0 * 2.6 1.0 260 ----- ----- Basin Index (%) 42* 122 S. PLATTE Crow Creek 8320 .1 .0 * 1.3 1.0 130 ----- ----- Basin Index (%) * 130 LITTLE SNAKE RIVER Battle Mountain 7460 .3 .0 * 2.6 1.2 217 Divide Peak 8700 .5 .2 250* 2.4 1.8 133 Elk River 8710 .2 .0 * 3.3 1.4 236 Elkhead Divide 8780 .0 -M * 3.5 -M * Little Snake River 8930 .1 .0 * 3.3 2.6 127 Old Battle 9850 .5 1.2 42* 4.5 2.3 196 Sage Creek Basin 7830 .2 .0 * 1.7 1.1 155 Sandstone RS 8150 .0 .0 * 2.4 1.2 200 Whiskey Park 8950 .2 .2 100* 3.0 1.8 167 ----- ----- Basin Index (%) 125* 173 UPPER GREEN RIVER Big Sandy Opening 9100 .8 .6 133* 1.1 1.2 92 Blind Bull Sum 8880 .1 .6 17* 1.5 1.0 150 East Rim Divide 8010 .0 .0 * 1.8 .6 300 Elkhart Park G.S. 9410 .0 .4 0* 2.2 1.4 157 Gros Ventre Summit 8760 .2 .8 25* -M 1.0 * Gunsight Pass 9830 1.0 .2 500* 3.2 1.2 267 Indian Creek 9400 .4 .7 57* 2.9 1.4 207 Kendall R.S. 7790 .1 .0 * 2.6 .8 325 Larsen Creek 8880 .4 .0 * 1.4 .8 175 Loomis Park 8240 .1 .0 * 2.1 1.2 175 New Fork Lake 8380 .0 .0 * -M .7 * Pocket Creek 9370 -M -M * -M -M * Snider Basin 8080 .1 .0 * 1.2 .8 150 Spring Creek Divide 9020 .2 .5 40* 2.5 1.2 208 Triple Peak 8520 .4 .2 200* 2.5 1.2 208 ----- ----- Basin Index (%) 95* 195 LOWER GREEN RIVER Blacks Fork Jct 8880 .4 -M * 1.9 -M * Buck Pasture 9620 .5 -M * 2.9 -M * EF Blacks Fork GS 9360 .9 -M * 2.3 -M * Hams Fork 7870 .0 .0 * 1.4 .9 156 Henrys Fork 10180 -M -M * 3.1 -M * Hewinta 9510 .4 .0 * 2.4 1.2 200 Hickerson Park 9130 .9 .0 * 2.4 .9 267 Hole-in-Rock 9170 .7 .0 * 3.2 1.0 320 Indian Creek 9400 .4 .7 57* 2.9 1.4 207 Kelley R.S. 8240 .0 .0 * 2.8 1.0 280 Spirit Lk 10240 .6 .0 * 4.4 1.4 314 Steel Creek Park 10140 1.5 .6 250* 2.9 1.2 242 ----- ----- Basin Index (%) 346* 249 UPPER BEAR RIVER Bear River RS 8510 .0 -M * 1.7 -M * Bug Lake 7980 .0 .0 * 2.8 1.1 255 Burts Miller Ranch 7900 .1 .0 * 1.9 .6 317 Chalk Creek #1 9160 1.0 .0 * 3.6 1.4 257 Giveout 6940 .0 .0 * 2.0 .9 222 Hayden Fork 9160 .0 .0 * 2.4 1.4 171 Kelley R.S. 8240 .0 .0 * 2.8 1.0 280 Lily Lake 9130 .0 .0 * 2.2 1.2 183 Monte Cristo 8930 .2 .0 * 4.0 1.4 286 Salt River Summit 7630 .0 .0 * 2.0 1.0 200 Spring Creek Divide 9020 .2 .5 40* 2.5 1.2 208 Trial Lake 9970 1.0 .0 * 2.4 1.4 171 ----- ----- Basin Index (%) 500* 227 ---------------------------------------------------------------------------- -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.