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 TUESDAY: OCTOBER 21 , 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 * 3.8 1.4 271 Blind Bull Sum 8880 .0 .6 0* 1.6 1.0 160 Cottonwood Creek 7710 .0 .0 * 3.3 1.6 206 East Rim Divide 8010 .0 .0 * 1.8 .8 225 Grand Targhee 9260 2.3 2.4 96* 5.5 3.0 183 Granite Creek 6770 .0 .0 * 2.5 1.0 250 Grassy Lake 7330 .0 .0 * 3.5 2.2 159 Gros Ventre Summit 8760 .1 .8 12* -M 1.2 * Gunsight Pass 9830 1.1 .4 275* 3.3 1.4 236 Lewis Lake Divide 7880 .3 .0 * 3.6 1.8 200 Loomis Park 8240 .0 .1 0* 2.2 1.2 183 Phillips Bench 8160 .0 .0 * 3.2 1.7 188 Salt River Summit 7630 .0 .0 * 1.9 1.0 190 Snake River Station 6900 .0 .0 * 2.9 1.4 207 Somsen Ranch 6830 .0 .0 * 3.3 1.2 275 Spring Creek Divide 9020 .0 .5 0* 2.5 1.2 208 Thumb Divide 7970 .2 .0 * 3.2 1.4 229 Togwotee Pass 9590 1.2 1.5 80* 4.4 2.0 220 Triple Peak 8520 .3 .4 75* 2.5 1.2 208 Two Ocean Plateau 9240 2.5 2.0 125* 4.5 1.8 250 Willow Creek 8060 .0 .0 * 4.3 2.3 187 Younts Peak 8340 .4 .5 80* 5.1 1.2 425 ----- ----- Basin Index (%) 91* 217 MADISON HEADWATERS IN WYOMING Black Bear 8160 1.5 1.7 88* 4.3 2.6 165 Canyon 7870 .3 .3 100* 2.6 1.4 186 Madison Plateau 7710 .1 .6 17* 3.5 1.8 194 West Yellowstone 6680 .1 .0 * 2.5 1.0 250 Whiskey Creek 6790 .2 .0 * 3.4 1.4 243 ----- ----- Basin Index (%) 85* 199 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 1.7 1.4 121* 3.1 1.4 221 Canyon 7870 .3 .3 100* 2.6 1.4 186 Evening Star 9040 1.3 1.2 108* 4.3 2.1 205 Fisher Creek 9110 2.0 1.4 143* 4.6 2.1 219 Monument Peak 8740 1.9 1.2 158* 4.3 1.7 253 Northeast Entrance 7420 .1 .0 * 3.2 1.1 291 Parker Peak 9420 1.5 1.4 107* 3.6 1.9 189 Sylvan Lake 8440 .5 .8 62* 4.4 2.0 220 Thumb Divide 7970 .2 .0 * 3.2 1.4 229 Two Ocean Plateau 9240 2.5 2.0 125* 4.5 1.8 250 White Mill 8730 1.5 .9 167* 3.5 1.6 219 Wolverine 7650 .0 .0 * 2.4 1.3 185 ----- ----- Basin Index (%) 127* 221 WIND RIVER Burroughs Creek 8760 .0 -M * 3.8 -M * Castle Creek 8410 .2 .0 * 1.8 1.0 180 Cold Springs 9640 .2 .2 100* 2.2 1.0 220 Deer Park 9690 .7 .9 78* 1.3 1.4 93 Hobbs Park 10080 .1 1.2 8* 1.7 1.4 121 Kirwin 9580 .9 1.0 90* 3.7 1.2 308 Little Warm 9370 .8 .4 200* 3.1 1.2 258 South Pass 9040 .6 .4 150* 1.2 1.2 100 St. Lawrence Alt 8610 .0 -M * 1.3 -M * Togwotee Pass 9590 1.2 1.5 80* 4.4 2.0 220 Townsend Creek 8720 .0 .0 * 1.6 1.3 123 ----- ----- Basin Index (%) 84* 179 BIGHORN BASIN Bald Mtn. 9360 2.5 2.0 125* 4.3 2.0 215 Bear Trap Meadow 8200 .9 .1 900* 3.7 1.2 308 Bone Springs Div 9340 .7 1.5 47* 3.2 1.8 178 Grave Springs 8560 1.0 .2 500* 3.6 1.0 360 Kirwin 9580 .9 1.0 90* 3.7 1.2 308 Marquette 8800 .6 .5 120* 2.2 1.4 157 Middle Powder 7760 1.5 .4 375* 4.2 1.4 300 Owl Creek 8990 .0 .2 0* 2.3 1.0 230 Powder River Pass 9480 1.5 .8 188* 4.3 1.4 307 Shell Creek 9570 1.2 2.0 60 3.7 1.6 231 Timber Creek 7910 .0 .1 0* 2.1 1.3 162 ----- ----- Basin Index (%) 123* 244 SHOSHONE RIVER Blackwater 9840 2.4 1.6 150* 3.4 1.9 179 Evening Star 9040 1.3 1.2 108* 4.3 2.1 205 Marquette 8800 .6 .5 120* 2.2 1.4 157 Sylvan Lake 8440 .5 .8 62* 4.4 2.0 220 Sylvan Road 7140 .0 .0 * 3.2 1.4 229 Younts Peak 8340 .4 .5 80* 5.1 1.2 425 ----- ----- Basin Index (%) 113* 226 POWDER RIVER Bear Trap Meadow 8200 .9 .1 900* 3.7 1.2 308 Cloud Peak Reservoir 9830 .6 1.0 60* 3.2 2.0 160 Grave Springs 8560 1.0 .2 500* 3.6 1.0 360 Hansen Sawmill 8360 .3 .0 * 4.0 1.2 333 Middle Powder 7760 1.5 .4 375* 4.2 1.4 300 Powder River Pass 9480 1.5 .8 188* 4.3 1.4 307 Soldier Park 8680 .0 .0 * 2.5 1.5 167 ----- ----- Basin Index (%) 232* 263 TONGUE RIVER Big Goose 8010 .3 .4 75* 2.7 1.4 193 Bone Springs Div 9340 .7 1.5 47* 3.2 1.8 178 Burgess Junction 7900 .5 .6 83* 3.2 1.6 200 Dome Lake 8890 .6 .9 67* 3.2 1.6 200 Little Goose 8560 .4 .0 * 2.7 1.6 169 Sucker Creek 8840 .5 .8 62* 3.1 1.6 194 Tie Creek 7050 .2 .0 * 2.8 1.3 215 ----- ----- Basin Index (%) 76* 192 BELLE FOURCHE Blind Park 6900 .2 .0 * 3.2 1.2 267 Cole Canyon 5930 .0 .0 * 3.2 1.0 320 North Rapid Creek 6150 .2 .0 * 2.4 1.0 240 ----- ----- Basin Index (%) * 275 CHEYENNE RIVER BASIN Blind Park 6900 .2 .0 * 3.2 1.2 267 North Rapid Creek 6150 .2 .0 * 2.4 1.0 240 ----- ----- Basin Index (%) * 255 UPPER N. PLATTE Arapaho Ridge 10960 .0 1.4 0* 1.8 1.8 100 Blackhall Mtn 9830 .3 1.2 25* 2.9 2.6 112 Cinnabar Park 9670 .3 .6 50* 1.8 1.7 106 Columbine 9170 .6 .0 * 1.3 2.0 65 Divide Peak 8700 .3 .3 100* 2.4 2.0 120 Joe Wright 10140 .5 .3 167* 2.0 2.4 83 Laprele Creek 8370 .3 .0 * 3.0 1.1 273 Med Bow 10500 1.0 -M * 3.8 -M * Never Summer 10300 .6 1.2 50* 1.0 1.9 53 North French Creek 10150 .7 .8 88* 3.2 2.1 152 Old Battle 9850 .6 1.2 50* 4.5 2.4 188 Rawah 9100 .0 .0 * 1.5 1.8 83 Sage Creek Basin 7830 .1 .0 * 1.7 1.1 155 Sand Lake 10080 .8 1.4 57* 3.1 1.8 172 South Brush Creek 8480 .0 .0 * 1.8 1.4 129 Tower 10610 .3 1.6 19* 2.2 2.5 88 Webber Springs 9250 .3 .3 100* 3.2 2.2 145 Whiskey Park 8950 .3 .2 150* 3.4 2.1 162 Willow Creek Pass 9520 .2 .2 100* 1.2 1.3 92 Zirkel 9320 .2 .0 * 2.3 2.6 88 ----- ----- Basin Index (%) 60* 120 SWEETWATER Deer Park 9690 .7 .9 78* 1.3 1.4 93 Larsen Creek 8880 .4 .0 * 1.4 .9 156 South Pass 9040 .6 .4 150* 1.2 1.2 100 ----- ----- Basin Index (%) 131* 111 LOWER N. PLATTE Casper Mtn. 7940 .4 .0 * 2.4 1.2 200 Laprele Creek 8370 .3 .0 * 3.0 1.1 273 Reno Hill 8410 .2 .6 33* 2.5 1.3 192 Windy Peak 7900 .0 .0 * 2.7 1.0 270 ----- ----- Basin Index (%) 150* 230 LARAMIE RIVER Brooklyn Lake 10250 .7 .2 350* 2.0 1.2 167 Cinnabar Park 9670 .3 .6 50* 1.8 1.7 106 Crow Creek 8320 .0 .0 * 1.3 1.0 130 Deadman Hill 10240 .6 1.2 50* 1.1 1.6 69 Rawah 9100 .0 .0 * 1.5 1.8 83 Roach 9710 .3 .5 60* 1.3 1.2 108 Windy Peak 7900 .0 .0 * 2.7 1.0 270 ----- ----- Basin Index (%) 76* 123 S. PLATTE Crow Creek 8320 .0 .0 * 1.3 1.0 130 ----- ----- Basin Index (%) * 130 LITTLE SNAKE RIVER Battle Mountain 7460 .0 .0 * 2.6 1.2 217 Divide Peak 8700 .3 .3 100* 2.4 2.0 120 Elk River 8710 .3 .0 * 3.5 1.5 233 Elkhead Divide 8780 .0 -M * 3.5 -M * Little Snake River 8930 .0 .0 * 3.4 2.8 121 Old Battle 9850 .6 1.2 50* 4.5 2.4 188 Sage Creek Basin 7830 .1 .0 * 1.7 1.1 155 Sandstone RS 8150 .0 .0 * 2.4 1.2 200 Whiskey Park 8950 .3 .2 150* 3.4 2.1 162 ----- ----- Basin Index (%) 94* 167 UPPER GREEN RIVER Big Sandy Opening 9100 .7 .7 100* 1.0 1.2 83 Blind Bull Sum 8880 .0 .6 0* 1.6 1.0 160 East Rim Divide 8010 .0 .0 * 1.8 .8 225 Elkhart Park G.S. 9410 .0 .4 0* 2.2 1.4 157 Gros Ventre Summit 8760 .1 .8 12* -M 1.2 * Gunsight Pass 9830 1.1 .4 275* 3.3 1.4 236 Indian Creek 9400 .3 .8 38* 2.9 1.5 193 Kendall R.S. 7790 .0 .0 * 2.6 .8 325 Larsen Creek 8880 .4 .0 * 1.4 .9 156 Loomis Park 8240 .0 .1 0* 2.2 1.2 183 New Fork Lake 8380 .0 .0 * -M .8 * Pocket Creek 9370 -M -M * -M -M * Snider Basin 8080 .1 .0 * 1.2 .8 150 Spring Creek Divide 9020 .0 .5 0* 2.5 1.2 208 Triple Peak 8520 .3 .4 75* 2.5 1.2 208 ----- ----- Basin Index (%) 64* 188 LOWER GREEN RIVER Blacks Fork Jct 8880 .2 -M * 1.9 -M * Buck Pasture 9620 .0 -M * 2.8 -M * EF Blacks Fork GS 9360 .6 -M * 2.3 -M * Hams Fork 7870 .0 .0 * 1.5 .9 167 Henrys Fork 10180 -M -M * 3.2 -M * Hewinta 9510 .0 .0 * 2.4 1.2 200 Hickerson Park 9130 .1 .0 * 2.6 1.0 260 Hole-in-Rock 9170 .4 .0 * 3.1 1.0 310 Indian Creek 9400 .3 .8 38* 2.9 1.5 193 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 1.4 .6 233* 3.0 1.4 214 ----- ----- Basin Index (%) 200* 241 UPPER BEAR RIVER Bear River RS 8510 .0 -M * 1.9 -M * Bug Lake 7980 .0 .0 * 2.8 1.2 233 Burts Miller Ranch 7900 .0 .0 * 1.9 .7 271 Chalk Creek #1 9160 .8 .0 * 3.5 1.6 219 Giveout 6940 .0 .0 * 2.0 .9 222 Hayden Fork 9160 .0 .0 * 2.6 1.5 173 Kelley R.S. 8240 .0 .0 * 2.8 1.0 280 Lily Lake 9130 .0 .0 * 2.2 1.4 157 Monte Cristo 8930 .1 .0 * 4.0 1.6 250 Salt River Summit 7630 .0 .0 * 1.9 1.0 190 Spring Creek Divide 9020 .0 .5 0* 2.5 1.2 208 Trial Lake 9970 .9 .1 900* 2.4 1.4 171 ----- ----- Basin Index (%) 300* 212 ----------------------------------------------------------------------------- -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.