Supercell over Laramie
WRDS/SCO may be working remotely so there could be a slight delay returning phone calls. Please email wrds@uwyo.edu if you are in need of information and we will respond as soon as possible

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 17 , 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 * 1.3 1.2 108 Blind Bull Sum 8650 .1 .2 50* 1.0 1.0 100 Cottonwood Creek 7670 .1 .0 * 2.7 1.4 193 East Rim Divide 7930 -M .0 * 1.0 .6 167 Grand Targhee 9260 1.3 2.0 65* 3.5 2.6 135 Granite Creek 6770 .0 .0 * 1.0 .8 125 Grassy Lake 7265 -M .0 * 2.0 1.6 125 Gros Ventre Summit 8750 .5 .6 83* 1.8 1.0 180 Gunsight Pass 9820 1.4 .2 700* 2.8 1.1 255 Lewis Lake Divide 7850 .1 .0 * 1.2 1.5 80 Loomis Park 8240 .2 .0 * 1.2 .9 133 Phillips Bench 8200 .2 .0 * 1.9 1.3 146 Salt River Summit 7640 .0 .0 * .9 .8 112 Snake River Station 6920 .0 .0 * 1.4 1.0 140 Somsen Ranch 6800 -M .0 * 2.1 .9 233 Spring Creek Divide 9000 .3 .2 150* 1.4 1.0 140 Thumb Divide 7980 .2 .0 * .8 1.2 67 Togwotee Pass 9580 .7 1.4 50* 1.6 1.4 114 Triple Peak 8500 -M .0 * 1.1 1.2 92 Two Ocean Plateau 9240 1.3 1.5 87* 2.3 1.6 144 Willow Creek 8080 -M .0 * 3.1 1.9 163 Younts Peak 8350 -M .2 * -M 1.0 * ----- ----- Basin Index (%) 105* 139 MADISON HEADWATERS IN WYOMING Black Bear 8170 .5 1.2 42* 2.3 2.1 110 Canyon 7870 .1 -M * .9 -M * Madison Plateau 7750 .0 .3 0* 1.3 1.7 76 West Yellowstone 6700 .0 .0 * .8 .8 100 Whiskey Creek 6800 .0 .0 * 1.2 1.2 100 ----- ----- Basin Index (%) 33* 97 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 1.2 1.2 100* 1.7 1.2 142 Canyon 7870 .1 -M * .9 -M * Evening Star 9200 1.6 1.0 160* 3.4 2.0 170 Fisher Creek 9100 .0 1.5 0* 1.7 1.8 94 Monument Peak 8850 .8 1.0 80* 2.2 1.6 138 Northeast Entrance 7350 .0 .0 * .8 .8 100 Parker Peak 9400 .9 1.2 75* 2.5 1.6 156 Sylvan Lake 8420 .0 .6 0* 3.0 1.8 167 Thumb Divide 7980 .2 .0 * .8 1.2 67 Two Ocean Plateau 9240 1.3 1.5 87* 2.3 1.6 144 White Mill 8700 .1 1.1 9* 1.3 1.4 93 Wolverine 7650 .0 .0 * 1.8 1.1 164 ----- ----- Basin Index (%) 67* 134 WIND RIVER Burroughs Creek 8750 .0 -M * 1.0 -M * Castle Creek 8400 .0 .0 * 1.3 .8 162 Cold Springs 9630 1.2 .0 * 1.8 .8 225 Deer Park 9700 .7 .4 175* 2.0 1.3 154 Hobbs Park 10100 2.7 .8 338* 3.6 1.0 360 Kirwin 9550 2.7 .8 338* 3.4 1.2 283 Little Warm 9370 .8 .2 400* 2.0 1.0 200 South Pass 9040 .5 .0 * 1.7 1.0 170 St. Lawrence Alt 8620 .4 -M * 2.0 -M * Togwotee Pass 9580 .7 1.4 50* 1.6 1.4 114 Townsend Creek 8700 1.4 .0 * 3.1 1.0 310 ----- ----- Basin Index (%) 297* 216 BIGHORN BASIN Bald Mtn. 9380 2.0 1.8 111* 2.5 1.6 156 Bear Trap Meadow 8200 .9 .1 900* 2.9 1.1 264 Bone Springs Div 9350 1.6 1.3 123* 2.8 1.6 175 Grave Springs 8550 .5 .1 500* 1.9 1.0 190 Kirwin 9550 2.7 .8 338* 3.4 1.2 283 Marquette 8760 4.7 .3 1567* 6.3 1.2 525 Middle Powder 7760 .3 .4 75* 3.0 1.0 300 Owl Creek 8975 .7 .3 233* 1.9 1.0 190 Powder River Pass 9480 1.1 .6 183* 2.4 1.4 171 Shell Creek 9580 2.2 1.6 138* 3.1 1.3 238 Timber Creek 7950 2.6 .0 * 4.4 1.1 400 ----- ----- Basin Index (%) 264* 256 SHOSHONE RIVER Blackwater 9780 2.2 1.4 157* 2.7 1.8 150 Evening Star 9200 1.6 1.0 160* 3.4 2.0 170 Marquette 8760 4.7 .3 1567* 6.3 1.2 525 Sylvan Lake 8420 .0 .6 0* 3.0 1.8 167 Sylvan Road 7120 .0 .0 * 2.1 1.3 162 Younts Peak 8350 -M .2 * -M 1.0 * ----- ----- Basin Index (%) 258* 216 POWDER RIVER Bear Trap Meadow 8200 .9 .1 900* 2.9 1.1 264 Cloud Peak Reservoir 9860 3.8 .8 475* 5.1 1.5 340 Grave Springs 8550 .5 .1 500* 1.9 1.0 190 Hansen Sawmill 8360 2.4 .0 * 2.6 1.2 217 Middle Powder 7760 .3 .4 75* 3.0 1.0 300 Powder River Pass 9480 1.1 .6 183* 2.4 1.4 171 Soldier Park 8720 2.4 .0 * 3.5 1.2 292 ----- ----- Basin Index (%) 570* 255 TONGUE RIVER Big Goose 7990 1.9 .4 475* 3.8 1.2 317 Bone Springs Div 9350 1.6 1.3 123* 2.8 1.6 175 Burgess Junction 7880 1.9 .4 475* 4.3 1.3 331 Dome Lake 8880 2.6 .6 433* 4.0 1.5 267 Little Goose 8870 2.8 .0 * 4.6 1.4 329 Sucker Creek 8880 2.8 .6 467* 4.7 1.4 336 Tie Creek 6870 1.1 .0 * 5.0 1.1 455 ----- ----- Basin Index (%) 445* 307 BELLE FOURCHE Blind Park 6890 .1 .0 * 1.7 1.1 155 Cole Canyon 5910 .1 .0 * 1.2 .9 133 North Rapid Creek 6130 .0 .0 * 2.1 .8 262 ----- ----- Basin Index (%) * 179 CHEYENNE RIVER BASIN Blind Park 6890 .1 .0 * 1.7 1.1 155 North Rapid Creek 6130 .0 .0 * 2.1 .8 262 ----- ----- Basin Index (%) * 200 UPPER N. PLATTE Arapaho Ridge 10976 .8 1.0 80* 1.2 1.6 75 Blackhall Mtn 9839 1.3 .8 162* 2.3 1.5 153 Cinnabar Park 9707 .1 .0 * .9 1.0 90 Columbine 9167 -M .0 * 1.4 1.4 100 Divide Peak 8730 .9 .1 900* 2.9 1.6 181 Joe Wright 10158 .9 .2 450* 1.8 1.8 100 Laprele Creek 8390 1.5 .0 * 2.8 .8 350 Med Bow 10512 1.3 -M * 2.3 -M * Never Summer 10323 1.3 .8 162* 1.3 1.6 81 North French Creek 10153 .9 .3 300* 1.9 1.6 119 Old Battle 9860 .9 .8 112* 2.0 1.8 111 Rawah 9069 .9 .0 * 1.7 1.5 113 Sage Creek Basin 7850 .1 .0 * 1.4 1.0 140 Sand Lake 10098 1.9 1.0 190* 2.0 1.5 133 South Brush Creek 8495 .4 .0 * 1.2 .8 150 Tower 10620 1.7 .4 425* 2.3 2.0 115 Webber Springs 9260 .2 .0 * 1.4 1.4 100 Whiskey Park 9020 .3 .0 * 1.4 1.6 88 Willow Creek Pass 9523 .9 .0 * 1.2 1.0 120 Zirkel 9338 .2 .0 * 1.2 1.8 67 ----- ----- Basin Index (%) 281* 118 SWEETWATER Deer Park 9700 .7 .4 175* 2.0 1.3 154 Larsen Creek 9000 -M .0 * 1.1 .8 138 South Pass 9040 .5 .0 * 1.7 1.0 170 ----- ----- Basin Index (%) 300* 155 LOWER N. PLATTE Casper Mtn. 7920 3.8 .0 * 5.4 1.0 540 Laprele Creek 8390 1.5 .0 * 2.8 .8 350 Reno Hill 8430 2.5 .5 500* 4.4 1.2 367 Windy Peak 7915 1.2 .0 * 1.9 .7 271 ----- ----- Basin Index (%) 1800* 392 LARAMIE RIVER Brooklyn Lake 10250 .2 .0 * 1.1 .9 122 Cinnabar Park 9707 .1 .0 * .9 1.0 90 Crow Creek 8335 .1 .0 * 1.6 .8 200 Deadman Hill 10239 1.4 .8 175* 1.4 1.2 117 Rawah 9069 .9 .0 * 1.7 1.5 113 Roach 9740 .8 .4 200* 1.3 1.1 118 Windy Peak 7915 1.2 .0 * 1.9 .7 271 ----- ----- Basin Index (%) 392* 138 S. PLATTE Crow Creek 8335 .1 .0 * 1.6 .8 200 ----- ----- Basin Index (%) * 200 LITTLE SNAKE RIVER Battle Mountain 7498 .0 .0 * 1.6 .9 178 Divide Peak 8730 .9 .1 900* 2.9 1.6 181 Elk River 8739 .4 .0 * 1.1 1.2 92 Elkhead Divide 8800 .1 -M * 1.4 -M * Little Snake River 8928 .1 .0 * 1.7 1.8 94 Old Battle 9860 .9 .8 112* 2.0 1.8 111 Sage Creek Basin 7850 .1 .0 * 1.4 1.0 140 Sandstone RS 8152 .0 .0 * 1.2 1.0 120 Whiskey Park 9020 .3 .0 * 1.4 1.6 88 ----- ----- Basin Index (%) 300* 122 UPPER GREEN RIVER Big Sandy Opening 9080 -M .4 * 1.2 1.0 120 Blind Bull Sum 8650 .1 .2 50* 1.0 1.0 100 East Rim Divide 7930 -M .0 * 1.0 .6 167 Elkhart Park G.S. 9400 .0 .1 0* 2.0 1.2 167 Gros Ventre Summit 8750 .5 .6 83* 1.8 1.0 180 Gunsight Pass 9820 1.4 .2 700* 2.8 1.1 255 Indian Creek 9425 .3 .4 75* 1.5 1.0 150 Kendall R.S. 7740 .0 .0 * 1.5 .8 188 Larsen Creek 9000 -M .0 * 1.1 .8 138 Loomis Park 8240 .2 .0 * 1.2 .9 133 New Fork Lake 8340 -M .0 * .4 .7 57 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M .0 * .5 .6 83 Spring Creek Divide 9000 .3 .2 150* 1.4 1.0 140 Triple Peak 8500 -M .0 * 1.1 1.2 92 ----- ----- Basin Index (%) 165* 143 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 1.4 -M * Buck Pasture 9632 .0 -M * 1.8 -M * EF Blacks Fork GS 9360 .0 -M * 1.5 -M * Hams Fork 7840 -M .0 * .5 .6 83 Henrys Fork 10182 -M -M * 2.0 -M * Hewinta 9500 .0 .0 * 1.3 1.0 130 Hickerson Park 9122 .0 .0 * 2.3 .7 329 Hole-in-Rock 9168 .0 .0 * 1.6 .8 200 Indian Creek 9425 .3 .4 75* 1.5 1.0 150 Kelley R.S. 8180 .3 .0 * 1.0 .7 143 Spirit Lk 10235 .1 .0 * 2.7 1.0 270 Steel Creek Park 10158 .8 .1 800* 1.9 1.0 190 ----- ----- Basin Index (%) 300* 188 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 .2 .0 * 1.1 .4 275 Chalk Creek #1 9171 .2 .0 * 2.1 1.2 175 Giveout 6930 -M .0 * .6 .8 75 Hayden Fork 9130 .1 .0 * 2.0 1.0 200 Kelley R.S. 8180 .3 .0 * 1.0 .7 143 Lily Lake 9133 .1 .0 * 1.6 1.1 145 Monte Cristo 8932 .0 .0 * 1.7 1.0 170 Salt River Summit 7640 .0 .0 * .9 .8 112 Spring Creek Divide 9000 .3 .2 150* 1.4 1.0 140 Trial Lake 9992 .0 .0 * 1.7 1.1 155 ----- ----- Basin Index (%) 750* 158 ----------------------------------------------------------------------------- -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.