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 31 , 2023 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Median Med ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 .4 .2 200* 3.0 2.2 136 Blind Bull Sum 8650 .8 1.4 57* 1.8 2.0 90 Cottonwood Creek 7670 .9 .9 100* 3.8 2.8 136 East Rim Divide 7930 -M .2 * 1.5 1.4 107 Grand Targhee 9260 3.3 4.4 75* 6.0 4.6 130 Granite Creek 6770 .1 .0 * 1.6 1.8 89 Grassy Lake 7265 .7 1.2 58* 4.2 3.5 120 Gros Ventre Summit 8750 .5 1.5 33 3.3 1.8 183 Gunsight Pass 9820 1.2 .8 150* 3.7 2.2 168 Lewis Lake Divide 7850 2.2 .8 275* 4.5 3.3 136 Loomis Park 8240 .3 .7 43* 1.8 1.9 95 Phillips Bench 8200 1.0 1.3 77* 3.2 2.5 128 Salt River Summit 7640 .1 .1 100* .7 1.8 39 Snake River Station 6920 .5 .2 250* 3.6 2.6 138 Somsen Ranch 6800 .6 .0 * 2.9 1.9 153 Spring Creek Divide 9000 .0 1.3 0* 2.2 2.3 96 Thumb Divide 7980 1.7 .3 567* 3.0 2.2 136 Togwotee Pass 9580 1.6 2.5 64* 3.1 3.0 103 Triple Peak 8500 .5 1.2 42* 1.9 2.1 90 Two Ocean Plateau 9240 2.0 3.3 61* 4.2 3.0 140 Willow Creek 8080 .4 .8 50* 4.5 3.8 118 Younts Peak 8350 -M 1.4 * -M 2.2 * ----- ----- Basin Index (%) 82* 122 MADISON HEADWATERS IN WYOMING Black Bear 8170 3.2 2.6 123* 6.0 4.0 150 Canyon 7870 1.0 -M * 2.4 -M * Madison Plateau 7750 1.6 1.1 145* 4.1 2.8 146 West Yellowstone 6700 .6 .0 * 2.8 1.4 200 Whiskey Creek 6800 .6 .3 200* 3.7 2.0 185 ----- ----- Basin Index (%) 150* 163 YELLOWSTONE HEADWATERS IN WYOMING Beartooth Lake 9360 2.5 2.6 96 3.2 2.5 128 Canyon 7870 1.0 -M * 2.4 -M * Evening Star 9200 2.5 2.4 104* 6.0 3.4 176 Fisher Creek 9100 2.2 2.8 79* 4.1 3.8 108 Monument Peak 8850 1.8 2.1 86* 4.5 2.8 161 Northeast Entrance 7350 .4 .0 * 2.2 1.9 116 Parker Peak 9400 2.1 2.4 88* 4.7 2.7 174 Sylvan Lake 8420 1.5 1.4 107* 5.6 3.2 175 Thumb Divide 7980 1.7 .3 567* 3.0 2.2 136 Two Ocean Plateau 9240 2.0 3.3 61* 4.2 3.0 140 White Mill 8700 2.0 1.8 111* 3.4 3.0 113 Wolverine 7650 .6 .0 * 4.3 2.0 215 ----- ----- Basin Index (%) 101* 148 WIND RIVER Burroughs Creek 8750 .5 -M * 1.9 -M * Castle Creek 8400 .6 .0 * 2.0 1.2 167 Cold Springs 9630 .6 .6 100* 2.6 1.8 144 Deer Park 9700 .9 1.5 60* 2.8 2.3 122 Hobbs Park 10100 2.9 1.8 161 4.2 2.0 210 Kirwin 9550 3.6 1.6 225 5.0 2.0 250 Little Warm 9370 1.2 1.2 100 3.0 1.8 167 South Pass 9040 .5 .9 56* 2.2 1.8 122 St. Lawrence Alt 8620 .1 -M * 2.4 -M * Togwotee Pass 9580 1.6 2.5 64* 3.1 3.0 103 Townsend Creek 8700 .2 .8 25* 3.5 2.2 159 ----- ----- Basin Index (%) 111* 157 BIGHORN BASIN Bald Mtn. 9380 3.0 3.0 100 3.9 3.0 130 Bear Trap Meadow 8200 .7 .5 140* 3.2 1.8 178 Bone Springs Div 9350 2.8 2.4 117 4.7 2.6 181 Grave Springs 8550 .0 .6 0* 2.3 1.8 128 Kirwin 9550 3.6 1.6 225 5.0 2.0 250 Marquette 8760 4.0 1.0 400 7.2 2.0 360 Middle Powder 7760 .2 .7 29* 3.3 2.2 150 Owl Creek 8975 .3 .6 50 2.0 1.3 154 Powder River Pass 9480 .6 1.6 38 3.1 2.4 129 Shell Creek 9580 3.7 2.8 132 4.8 2.5 192 Timber Creek 7950 1.8 .4 450* 5.4 1.8 300 ----- ----- Basin Index (%) 136 192 SHOSHONE RIVER Blackwater 9780 3.9 2.8 139 4.6 2.7 170 Evening Star 9200 2.5 2.4 104* 6.0 3.4 176 Marquette 8760 4.0 1.0 400 7.2 2.0 360 Sylvan Lake 8420 1.5 1.4 107* 5.6 3.2 175 Sylvan Road 7120 .9 .2 450* 4.7 2.2 214 Younts Peak 8350 -M 1.4 * -M 2.2 * ----- ----- Basin Index (%) 164* 208 POWDER RIVER Bear Trap Meadow 8200 .7 .5 140* 3.2 1.8 178 Cloud Peak Reservoir 9860 3.4 1.9 179 5.7 2.6 219 Grave Springs 8550 .0 .6 0* 2.3 1.8 128 Hansen Sawmill 8360 .5 .2 250* 2.7 1.8 150 Middle Powder 7760 .2 .7 29* 3.3 2.2 150 Powder River Pass 9480 .6 1.6 38 3.1 2.4 129 Soldier Park 8720 .0 .0 * 4.1 1.6 256 ----- ----- Basin Index (%) 98* 172 TONGUE RIVER Big Goose 7990 .4 .6 67* 5.0 2.2 227 Bone Springs Div 9350 2.8 2.4 117 4.7 2.6 181 Burgess Junction 7880 1.4 1.1 127* 5.3 2.4 221 Dome Lake 8880 2.1 1.6 131 5.1 2.6 196 Little Goose 8870 1.6 .2 800* 5.1 2.2 232 Sucker Creek 8880 2.5 1.6 156 5.8 2.6 223 Tie Creek 6870 .8 .0 * 6.5 2.4 271 ----- ----- Basin Index (%) 155* 221 BELLE FOURCHE Blind Park 6890 .5 .0 * 1.6 1.6 100 Cole Canyon 5910 .1 .0 * 1.3 1.6 81 North Rapid Creek 6130 .0 .0 * 2.4 1.4 171 ----- ----- Basin Index (%) * 115 CHEYENNE RIVER BASIN Blind Park 6890 .5 .0 * 1.6 1.6 100 North Rapid Creek 6130 .0 .0 * 2.4 1.4 171 ----- ----- Basin Index (%) * 133 UPPER N. PLATTE Arapaho Ridge 10976 .3 2.7 11 1.7 3.2 53 Blackhall Mtn 9839 1.1 2.3 48* 3.2 3.7 86 Cinnabar Park 9707 .5 1.4 36* 1.5 2.8 54 Columbine 9167 .1 .4 25* 1.4 3.0 47 Divide Peak 8730 .5 .8 62* 3.4 3.2 106 Joe Wright 10158 .9 1.5 60* 2.9 3.9 74 Laprele Creek 8390 .2 .4 50* 2.9 1.6 181 Med Bow 10512 1.7 -M * 2.9 -M * Never Summer 10323 2.3 2.5 92 2.0 3.1 65 North French Creek 10153 .3 2.4 12* 2.2 3.4 65 Old Battle 9860 .8 2.0 40* 2.4 4.2 57 Rawah 9069 .3 .6 50* 2.6 3.1 84 Sage Creek Basin 7850 .4 .0 * 2.0 2.0 100 Sand Lake 10098 2.3 2.3 100* 2.4 3.0 80 South Brush Creek 8495 .0 .4 0* 1.5 2.2 68 Tower 10620 1.1 2.3 48* 3.0 4.0 75 Webber Springs 9260 .8 1.0 80* 1.7 3.2 53 Whiskey Park 9020 .7 .5 140* 2.3 3.0 77 Willow Creek Pass 9523 1.7 1.6 106 2.1 2.2 95 Zirkel 9338 .7 .6 117* 1.9 3.4 56 ----- ----- Basin Index (%) 58* 74 SWEETWATER Deer Park 9700 .9 1.5 60* 2.8 2.3 122 Larsen Creek 9000 -M .0 * 1.8 1.8 100 South Pass 9040 .5 .9 56* 2.2 1.8 122 ----- ----- Basin Index (%) 58* 115 LOWER N. PLATTE Casper Mtn. 7920 1.5 1.0 150* 5.6 2.4 233 Laprele Creek 8390 .2 .4 50* 2.9 1.6 181 Reno Hill 8430 .4 1.0 40* 4.5 2.1 214 Windy Peak 7915 .1 .3 33* 1.9 1.5 127 ----- ----- Basin Index (%) 81* 196 LARAMIE RIVER Brooklyn Lake 10250 .3 1.0 30* 1.3 2.2 59 Cinnabar Park 9707 .5 1.4 36* 1.5 2.8 54 Crow Creek 8335 .1 .0 * 1.8 1.9 95 Deadman Hill 10239 1.9 2.3 83 1.9 2.8 68 Rawah 9069 .3 .6 50* 2.6 3.1 84 Roach 9740 .7 1.2 58* 1.9 2.6 73 Windy Peak 7915 .1 .3 33* 1.9 1.5 127 ----- ----- Basin Index (%) 57* 76 S. PLATTE Crow Creek 8335 .1 .0 * 1.8 1.9 95 ----- ----- Basin Index (%) * 95 LITTLE SNAKE RIVER Battle Mountain 7498 -M .0 * 2.1 2.1 100 Divide Peak 8730 .5 .8 62* 3.4 3.2 106 Elk River 8739 .9 .2 450* 1.7 2.5 68 Elkhead Divide 8800 .3 -M * -M -M * Little Snake River 8928 .4 .2 200* 2.5 4.4 57 Old Battle 9860 .8 2.0 40* 2.4 4.2 57 Sage Creek Basin 7850 .4 .0 * 2.0 2.0 100 Sandstone RS 8152 .2 .0 * 1.3 2.2 59 Whiskey Park 9020 .7 .5 140* 2.3 3.0 77 ----- ----- Basin Index (%) 105* 75 UPPER GREEN RIVER Big Sandy Opening 9080 .6 1.3 46* 2.0 1.8 111 Blind Bull Sum 8650 .8 1.4 57* 1.8 2.0 90 East Rim Divide 7930 -M .2 * 1.5 1.4 107 Elkhart Park G.S. 9400 .5 1.0 50* 2.6 1.9 137 Gros Ventre Summit 8750 .5 1.5 33 3.3 1.8 183 Gunsight Pass 9820 1.2 .8 150* 3.7 2.2 168 Indian Creek 9425 .6 1.6 38* 2.0 2.4 83 Kendall R.S. 7740 .0 .2 0* 2.2 1.6 138 Larsen Creek 9000 -M .0 * 1.8 1.8 100 Loomis Park 8240 .3 .7 43* 1.8 1.9 95 New Fork Lake 8340 .1 .4 25* .7 1.3 54 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 -M .3 * .8 1.5 53 Spring Creek Divide 9000 .0 1.3 0* 2.2 2.3 96 Triple Peak 8500 .5 1.2 42* 1.9 2.1 90 ----- ----- Basin Index (%) 45* 109 LOWER GREEN RIVER Blacks Fork Jct 8869 .6 .0 * 2.0 1.6 125 Buck Pasture 9632 .3 -M * 2.3 -M * EF Blacks Fork GS 9360 .1 .0 * 1.9 1.6 119 Hams Fork 7840 -M .0 * .9 1.6 56 Henrys Fork 10182 -M -M * 2.8 -M * Hewinta 9500 .9 .0 * 2.0 2.0 100 Hickerson Park 9122 .3 .0 * 3.1 1.8 172 Hole-in-Rock 9168 .0 .1 0* 1.9 1.8 106 Indian Creek 9425 .6 1.6 38* 2.0 2.4 83 Kelley R.S. 8180 .6 .6 100* 1.5 1.8 83 Spirit Lk 10235 .2 .9 22* 3.1 2.4 129 Steel Creek Park 10158 .8 1.1 73* 2.6 2.2 118 ----- ----- Basin Index (%) 95* 109 UPPER BEAR RIVER Bear River RS 8777 .2 .0 * 2.1 1.4 150 Bug Lake 7987 1.1 .2 550* 2.4 2.0 120 Burts Miller Ranch 8000 .1 .0 * 1.7 1.3 131 Chalk Creek #1 9171 .8 1.3 62* 2.8 3.0 93 Giveout 6930 -M .0 * .8 1.6 50 Hayden Fork 9130 .4 .0 * 3.1 2.6 119 Kelley R.S. 8180 .6 .6 100* 1.5 1.8 83 Lily Lake 9133 .4 .4 100* 2.5 2.2 114 Monte Cristo 8932 .7 .4 175* 2.8 2.6 108 Salt River Summit 7640 .1 .1 100* .7 1.8 39 Spring Creek Divide 9000 .0 1.3 0* 2.2 2.3 96 Trial Lake 9992 .3 .8 38* 2.4 2.4 100 ----- ----- Basin Index (%) 92* 100 ----------------------------------------------------------------------------- -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.