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 WEDNESDAY: OCTOBER 25 , 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 * 1.6 1.8 89 Blind Bull Sum 8650 .0 .8 0* 1.0 1.5 67 Cottonwood Creek 7670 .1 .5 20* 2.7 2.2 123 East Rim Divide 7930 -M .0 * .8 1.0 80 Grand Targhee 9260 .8 2.6 31* 3.7 3.4 109 Granite Creek 6770 .0 .0 * .9 1.4 64 Grassy Lake 7265 -M .4 * 2.2 2.6 85 Gros Ventre Summit 8750 .0 1.0 0* 1.8 1.3 138 Gunsight Pass 9820 .5 .8 62* 2.9 1.6 181 Lewis Lake Divide 7850 .1 .5 20* 1.9 2.3 83 Loomis Park 8240 .1 .2 50* 1.3 1.4 93 Phillips Bench 8200 .2 .6 33* 1.9 2.0 95 Salt River Summit 7640 -M .0 * .5 1.4 36 Snake River Station 6920 .0 .0 * 1.7 1.8 94 Somsen Ranch 6800 -M .0 * 2.0 1.5 133 Spring Creek Divide 9000 .0 .8 0* 1.4 1.8 78 Thumb Divide 7980 .6 .2 300* 1.7 1.8 94 Togwotee Pass 9580 .4 2.0 20* 1.7 2.3 74 Triple Peak 8500 -M .8 * 1.1 2.0 55 Two Ocean Plateau 9240 1.6 2.8 57* 2.9 2.2 132 Willow Creek 8080 -M .6 * 3.2 2.8 114 Younts Peak 8350 -M .8 * -M 1.6 * ----- ----- Basin Index (%) 34* 97 MADISON HEADWATERS IN WYOMING Black Bear 8170 .6 2.0 30* 3.5 3.3 106 Canyon 7870 .1 -M * 1.4 -M * Madison Plateau 7750 .0 .8 0* 2.1 2.1 100 West Yellowstone 6700 .1 .0 * 1.2 1.1 109 Whiskey Creek 6800 .0 .0 * 1.9 1.6 119 ----- ----- Basin Index (%) 25* 107 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 1.1 2.0 55* 1.8 1.8 100 Canyon 7870 .1 -M * 1.4 -M * Evening Star 9200 .4 1.7 24* 4.0 2.4 167 Fisher Creek 9100 .1 2.2 5* 2.2 2.6 85 Monument Peak 8850 .1 1.5 7* 2.5 2.0 125 Northeast Entrance 7350 .0 .0 * 1.2 1.4 86 Parker Peak 9400 .5 1.8 28* 3.1 2.0 155 Sylvan Lake 8420 .3 1.1 27* 4.0 2.4 167 Thumb Divide 7980 .6 .2 300* 1.7 1.8 94 Two Ocean Plateau 9240 1.6 2.8 57* 2.9 2.2 132 White Mill 8700 .0 1.6 0* 1.7 2.0 85 Wolverine 7650 .0 .0 * 2.8 1.6 175 ----- ----- Basin Index (%) 32* 126 WIND RIVER Burroughs Creek 8750 .0 -M * 1.1 -M * Castle Creek 8400 .0 .0 * 1.3 1.1 118 Cold Springs 9630 .1 .4 25* 1.9 1.4 136 Deer Park 9700 .4 1.2 33* 2.5 1.9 132 Hobbs Park 10100 2.5 1.4 179* 3.7 1.8 206 Kirwin 9550 2.6 1.4 186 3.8 1.6 238 Little Warm 9370 .0 .9 0* 2.0 1.4 143 South Pass 9040 .1 .7 14* 1.9 1.6 119 St. Lawrence Alt 8620 .0 -M * 2.0 -M * Togwotee Pass 9580 .4 2.0 20* 1.7 2.3 74 Townsend Creek 8700 .4 .4 100* 3.4 1.7 200 ----- ----- Basin Index (%) 77* 150 BIGHORN BASIN Bald Mtn. 9380 2.5 2.4 104 3.0 2.2 136 Bear Trap Meadow 8200 .2 .2 100* 2.8 1.4 200 Bone Springs Div 9350 2.5 2.0 125 4.0 2.3 174 Grave Springs 8550 .0 .5 0* 1.9 1.4 136 Kirwin 9550 2.6 1.4 186 3.8 1.6 238 Marquette 8760 3.8 .4 950* 6.9 1.6 431 Middle Powder 7760 .0 .4 0* 3.1 1.6 194 Owl Creek 8975 .0 .4 0* 1.9 1.2 158 Powder River Pass 9480 .1 1.1 9 2.5 1.8 139 Shell Creek 9580 2.8 2.5 112 3.8 2.1 181 Timber Creek 7950 1.1 .2 550* 4.8 1.4 343 ----- ----- Basin Index (%) 136* 207 SHOSHONE RIVER Blackwater 9780 2.5 2.1 119* 3.1 2.1 148 Evening Star 9200 .4 1.7 24* 4.0 2.4 167 Marquette 8760 3.8 .4 950* 6.9 1.6 431 Sylvan Lake 8420 .3 1.1 27* 4.0 2.4 167 Sylvan Road 7120 .0 .0 * 2.8 1.8 156 Younts Peak 8350 -M .8 * -M 1.6 * ----- ----- Basin Index (%) 132* 202 POWDER RIVER Bear Trap Meadow 8200 .2 .2 100* 2.8 1.4 200 Cloud Peak Reservoir 9860 3.3 1.2 275* 5.5 2.2 250 Grave Springs 8550 .0 .5 0* 1.9 1.4 136 Hansen Sawmill 8360 .4 .2 200* 2.6 1.4 186 Middle Powder 7760 .0 .4 0* 3.1 1.6 194 Powder River Pass 9480 .1 1.1 9 2.5 1.8 139 Soldier Park 8720 .5 .0 * 4.1 1.6 256 ----- ----- Basin Index (%) 125* 197 TONGUE RIVER Big Goose 7990 .1 .4 25* 4.3 1.8 239 Bone Springs Div 9350 2.5 2.0 125 4.0 2.3 174 Burgess Junction 7880 .9 .8 112* 4.6 1.8 256 Dome Lake 8880 1.9 1.2 158* 4.6 2.0 230 Little Goose 8870 1.4 .0 * 4.8 1.7 282 Sucker Creek 8880 2.2 1.3 169* 5.3 2.0 265 Tie Creek 6870 .2 .0 * 5.6 1.8 311 ----- ----- Basin Index (%) 161* 248 BELLE FOURCHE Blind Park 6890 .1 .0 * 1.7 1.5 113 Cole Canyon 5910 .1 .0 * 1.3 1.3 100 North Rapid Creek 6130 .0 .0 * 2.3 1.2 192 ----- ----- Basin Index (%) * 132 CHEYENNE RIVER BASIN Blind Park 6890 .1 .0 * 1.7 1.5 113 North Rapid Creek 6130 .0 .0 * 2.3 1.2 192 ----- ----- Basin Index (%) * 148 UPPER N. PLATTE Arapaho Ridge 10976 .1 1.9 5* 1.2 2.4 50 Blackhall Mtn 9839 .2 1.7 12* 2.4 3.3 73 Cinnabar Park 9707 .0 .9 0* .9 1.9 47 Columbine 9167 -M .2 * 1.2 2.4 50 Divide Peak 8730 .1 .6 17* 2.8 2.4 117 Joe Wright 10158 .1 1.0 10* 1.8 2.8 64 Laprele Creek 8390 .1 .0 * 2.8 1.4 200 Med Bow 10512 1.2 -M * 2.3 -M * Never Summer 10323 1.3 1.9 68* 1.3 2.2 59 North French Creek 10153 .0 1.4 0* 1.9 2.6 73 Old Battle 9860 .1 1.6 6* 2.0 3.2 62 Rawah 9069 -M .2 * 1.8 2.2 82 Sage Creek Basin 7850 .1 .0 * 1.5 1.7 88 Sand Lake 10098 1.9 2.2 86* 2.0 2.5 80 South Brush Creek 8495 -M .3 * 1.3 1.6 81 Tower 10620 .2 1.6 12* 2.3 3.6 64 Webber Springs 9260 .1 .8 12* 1.4 2.5 56 Whiskey Park 9020 .0 .6 0* 1.5 2.6 58 Willow Creek Pass 9523 .9 .8 112* 1.3 1.6 81 Zirkel 9338 .1 .2 50* 1.2 2.9 41 ----- ----- Basin Index (%) 31* 71 SWEETWATER Deer Park 9700 .4 1.2 33* 2.5 1.9 132 Larsen Creek 9000 -M .0 * 1.4 1.7 82 South Pass 9040 .1 .7 14* 1.9 1.6 119 ----- ----- Basin Index (%) 26* 112 LOWER N. PLATTE Casper Mtn. 7920 1.7 .6 283* 5.4 1.6 338 Laprele Creek 8390 .1 .0 * 2.8 1.4 200 Reno Hill 8430 .9 .8 112* 4.4 1.7 259 Windy Peak 7915 .2 .0 * 2.0 1.2 167 ----- ----- Basin Index (%) 207* 247 LARAMIE RIVER Brooklyn Lake 10250 .0 .4 0* 1.0 1.8 56 Cinnabar Park 9707 .0 .9 0* .9 1.9 47 Crow Creek 8335 .0 .0 * 1.7 1.6 106 Deadman Hill 10239 1.5 1.4 107* 1.4 2.1 67 Rawah 9069 -M .2 * 1.8 2.2 82 Roach 9740 .1 .7 14* 1.3 2.0 65 Windy Peak 7915 .2 .0 * 2.0 1.2 167 ----- ----- Basin Index (%) 53* 79 S. PLATTE Crow Creek 8335 .0 .0 * 1.7 1.6 106 ----- ----- Basin Index (%) * 106 LITTLE SNAKE RIVER Battle Mountain 7498 .0 .0 * 1.7 1.7 100 Divide Peak 8730 .1 .6 17* 2.8 2.4 117 Elk River 8739 .4 .0 * 1.2 2.0 60 Elkhead Divide 8800 .0 -M * 1.5 -M * Little Snake River 8928 .0 .6 0* 1.7 3.8 45 Old Battle 9860 .1 1.6 6* 2.0 3.2 62 Sage Creek Basin 7850 .1 .0 * 1.5 1.7 88 Sandstone RS 8152 -M .0 * 1.2 2.0 60 Whiskey Park 9020 .0 .6 0* 1.5 2.6 58 ----- ----- Basin Index (%) 21* 70 UPPER GREEN RIVER Big Sandy Opening 9080 .1 .9 11* 1.6 1.3 123 Blind Bull Sum 8650 .0 .8 0* 1.0 1.5 67 East Rim Divide 7930 -M .0 * .8 1.0 80 Elkhart Park G.S. 9400 .0 .8 0* 2.0 1.6 125 Gros Ventre Summit 8750 .0 1.0 0* 1.8 1.3 138 Gunsight Pass 9820 .5 .8 62* 2.9 1.6 181 Indian Creek 9425 -M 1.0 * 1.4 1.7 82 Kendall R.S. 7740 .0 .0 * 1.7 1.3 131 Larsen Creek 9000 -M .0 * 1.4 1.7 82 Loomis Park 8240 .1 .2 50* 1.3 1.4 93 New Fork Lake 8340 -M .0 * .5 1.0 50 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M .0 * .5 1.2 42 Spring Creek Divide 9000 .0 .8 0* 1.4 1.8 78 Triple Peak 8500 -M .8 * 1.1 2.0 55 ----- ----- Basin Index (%) 13* 95 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 .0 * 1.4 1.4 100 Buck Pasture 9632 .0 -M * 2.0 -M * EF Blacks Fork GS 9360 .0 .0 * 1.6 1.6 100 Hams Fork 7840 -M .0 * .6 1.2 50 Henrys Fork 10182 -M -M * 2.0 -M * Hewinta 9500 .0 .0 * 1.4 1.7 82 Hickerson Park 9122 .0 .0 * 2.3 1.1 209 Hole-in-Rock 9168 .0 .0 * 1.6 1.4 114 Indian Creek 9425 -M 1.0 * 1.4 1.7 82 Kelley R.S. 8180 .2 .3 67* 1.0 1.6 62 Spirit Lk 10235 .2 .2 100* 2.7 2.0 135 Steel Creek Park 10158 .1 .8 12* 2.0 1.7 118 ----- ----- Basin Index (%) 38* 104 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 1.2 -M * Bug Lake 7987 .3 .0 * 1.3 1.5 87 Burts Miller Ranch 8000 .0 .0 * 1.2 .9 133 Chalk Creek #1 9171 .2 .8 25* 2.1 2.1 100 Giveout 6930 -M .0 * .5 1.4 36 Hayden Fork 9130 .0 .0 * 2.1 1.9 111 Kelley R.S. 8180 .2 .3 67* 1.0 1.6 62 Lily Lake 9133 .1 .0 * 1.6 1.5 107 Monte Cristo 8932 .0 .0 * 1.7 2.0 85 Salt River Summit 7640 -M .0 * .5 1.4 36 Spring Creek Divide 9000 .0 .8 0* 1.4 1.8 78 Trial Lake 9992 .0 .5 0* 1.8 2.0 90 ----- ----- Basin Index (%) 33* 84 ----------------------------------------------------------------------------- -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.