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 SUNDAY: OCTOBER 27 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 1.4 .0 * 2.2 1.7 129 Black Bear 8170 4.0 2.4 167* 3.8 3.2 119 Blind Bull Sum 8650 3.0 1.0 300* 1.4 1.7 82 Cottonwood Creek 7670 2.9 .5 580* 3.0 2.2 136 East Rim Divide 7930 .2 .0 * .5 1.1 45 Grand Targhee 9260 6.9 4.2 164* 3.5 4.7 74 Granite Creek 6770 .5 .0 * 1.1 1.6 69 Grassy Lake 7265 1.7 .7 243* 4.7 2.8 168 Gros Ventre Summit 8750 1.2 1.5 80 1.0 1.5 67 Gunsight Pass 9820 1.1 .8 138* 1.4 1.9 74 Lewis Lake Divide 7850 1.7 .5 340* 3.6 2.7 133 Phillips Bench 8200 2.7 .6 450* 2.7 2.0 135 Salt River Summit 7640 .7 .0 * 1.2 1.4 86 Snake River Station 6920 1.3 .0 * 2.2 2.2 100 Spring Creek Divide 9000 2.2 .8 275* 2.4 1.8 133 Thumb Divide 7980 1.1 .3 367* 2.0 1.9 105 Togwotee Pass 9580 4.3 2.4 179* 3.2 2.3 139 Two Ocean Plateau 9240 -M 2.8 * -M 2.6 * Willow Creek 8080 2.6 .6 433* 4.4 3.0 147 Younts Peak 8350 1.8 1.3 138* 1.5 1.9 79 ----- ----- Basin Index (%) 235* 110 MADISON-GALLATIN Black Bear 8170 4.0 2.4 167* 3.8 3.2 119 Canyon 7870 1.7 .3 567* 2.0 1.6 125 Madison Plateau 7750 2.7 1.0 270* 2.8 2.4 117 West Yellowstone 6700 .9 .0 * 1.2 1.6 75 Whiskey Creek 6800 1.7 .2 850* 2.0 2.0 100 ----- ----- Basin Index (%) 282* 109 YELLOWSTONE Beartooth Lake 9360 3.8 2.2 173* 3.4 1.9 179 Burnt Mtn 5880 .8 .0 * 2.6 2.9 90 Canyon 7870 1.7 .3 567* 2.0 1.6 125 Cole Creek 7850 3.4 2.2 155 2.6 2.6 100 Evening Star 9200 5.1 2.0 255* 4.9 2.7 181 Fisher Creek 9100 4.6 2.2 209* 4.6 3.0 153 Northeast Entrance 7350 1.3 .0 * 2.4 1.4 171 Parker Peak 9400 4.2 2.2 191* 3.9 2.3 170 Sylvan Lake 8420 3.4 1.3 262* 4.1 2.5 164 Thumb Divide 7980 1.1 .3 367* 2.0 1.9 105 Two Ocean Plateau 9240 -M 2.8 * -M 2.6 * White Mill 8700 4.6 1.7 271* 2.8 2.3 122 Wolverine 7650 .4 .0 * 2.4 1.6 150 Younts Peak 8350 1.8 1.3 138* 1.5 1.9 79 ----- ----- Basin Index (%) 231* 137 WIND RIVER Burroughs Creek 8750 1.2 -M * 2.5 -M * Castle Creek 8400 .0 -M * .9 -M * Cold Springs 9630 .7 .5 140* .5 1.6 31 Deer Park 9700 1.5 1.5 100* 1.2 2.5 48 Hobbs Park 10100 1.2 1.6 75 .9 2.0 45 Kirwin 9550 3.1 1.4 221 1.7 1.6 106 Little Warm 9370 2.6 1.0 260* 1.0 1.6 62 Owl Creek 8975 .3 .5 60* .9 1.1 82 South Pass 9040 1.2 1.0 120* 1.0 2.0 50 St. Lawrence Alt 8620 .2 .5 40* .8 1.5 53 Togwotee Pass 9580 4.3 2.4 179* 3.2 2.3 139 Townsend Creek 8700 .9 .6 150* 1.0 2.0 50 ----- ----- Basin Index (%) 145* 67 BIGHORN BASIN Bald Mtn. 9380 4.5 2.6 173 2.0 2.4 83 Bear Trap Meadow 8200 1.6 .3 533* 2.6 1.5 173 Bone Springs Div 9350 3.5 2.2 159 2.3 2.4 96 Grave Springs 8550 2.9 .7 414* 3.4 2.0 170 Kirwin 9550 3.1 1.4 221 1.7 1.6 106 Marquette 8760 1.3 -M * 2.1 -M * Middle Powder 7760 2.8 .7 400* 3.5 2.1 167 Owl Creek 8975 .3 .5 60* .9 1.1 82 Powder River Pass 9480 3.0 1.1 273 2.9 1.9 153 Shell Creek 9580 3.6 2.6 138 2.2 2.1 105 Timber Creek 7950 1.3 .3 433* 1.6 1.7 94 ----- ----- Basin Index (%) 215* 123 SHOSHONE RIVER Blackwater 9780 4.9 2.4 204* 3.8 2.4 158 Evening Star 9200 5.1 2.0 255* 4.9 2.7 181 Marquette 8760 1.3 -M * 2.1 -M * Sylvan Lake 8420 3.4 1.3 262* 4.1 2.5 164 Sylvan Road 7120 1.4 .0 * 3.7 1.9 195 Younts Peak 8350 1.8 1.3 138* 1.5 1.9 79 ----- ----- Basin Index (%) 237* 158 POWDER RIVER Bear Trap Meadow 8200 1.6 .3 533* 2.6 1.5 173 Cloud Peak Reservoir 9860 2.3 1.6 144* 2.9 2.5 116 Grave Springs 8550 2.9 .7 414* 3.4 2.0 170 Hansen Sawmill 8360 .9 .2 450* 1.9 1.6 119 Middle Powder 7760 2.8 .7 400* 3.5 2.1 167 Powder River Pass 9480 3.0 1.1 273 2.9 1.9 153 Soldier Park 8720 .7 -M * 1.8 -M * ----- ----- Basin Index (%) 293* 148 TONGUE RIVER Big Goose 7990 1.1 .8 138* 2.0 2.2 91 Bone Springs Div 9350 3.5 2.2 159 2.3 2.4 96 Burgess Junction 7880 2.2 1.0 220* 3.4 2.1 162 Dome Lake 8880 1.7 1.4 121 1.5 2.4 62 Little Goose 8870 1.8 -M * 2.0 -M * Sucker Creek 8880 2.6 1.3 200 2.4 2.4 100 Tie Creek 6870 1.4 .0 * 2.2 2.5 88 ----- ----- Basin Index (%) 187* 99 BELLE FOURCHE Blind Park 6890 1.7 .0 * 2.2 2.0 110 Cole Canyon 5910 1.0 .0 * 2.5 1.6 156 ----- ----- Basin Index (%) * 131 CHEYENNE RIVER BASIN Blind Park 6890 1.7 .0 * 2.2 2.0 110 North Rapid Creek 6130 2.0 .0 * 2.4 1.8 133 ----- ----- Basin Index (%) * 121 UPPER N. PLATTE Arapaho Ridge 10960 1.8 2.4 75 2.1 2.9 72 Blackhall Mtn 9820 3.0 -M * 3.8 -M * Columbine 9160 2.7 .2 1350* 3.0 2.2 136 Divide Peak 8880 1.3 1.0 130* -M 2.7 * Joe Wright 10120 1.9 2.0 95* 3.4 2.9 117 Laprele Creek 8375 2.1 .2 1050* 2.3 1.7 135 Med Bow 10500 5.1 -M * 5.0 -M * Never Summer 10280 2.1 1.8 117* 1.6 -M * North French Creek 10130 4.2 2.4 175* 4.4 2.8 157 Old Battle 10000 3.6 2.2 164* 3.6 3.5 103 Rawah 9020 1.3 .1 1300* 2.3 2.0 115 Sage Creek Basin 7850 .9 .0 * 1.1 2.0 55 Sand Lake 10050 3.4 2.1 162* 3.5 2.6 135 South Brush Creek 8440 1.6 .3 533* 2.0 1.9 105 Tower 10500 5.4 2.6 208* 5.0 3.7 135 Webber Springs 9250 2.4 .9 267* 2.8 2.7 104 Whiskey Park 8950 3.6 .6 600* 4.3 2.4 179 Willow Creek Pass 9540 1.4 .8 175* 1.3 1.7 76 Zirkel 9340 3.0 .5 600* 3.9 3.4 115 ----- ----- Basin Index (%) 212* 117 SWEETWATER Deer Park 9700 1.5 1.5 100* 1.2 2.5 48 Larsen Creek 9000 .0 .0 * 1.0 -M * South Pass 9040 1.2 1.0 120* 1.0 2.0 50 ----- ----- Basin Index (%) 108* 49 LOWER N. PLATTE Casper Mtn. 7900 3.6 .8 450* 2.8 2.5 112 Laprele Creek 8375 2.1 .2 1050* 2.3 1.7 135 Reno Hill 8400 3.1 1.1 282* -M 2.3 * Windy Peak 7900 1.3 .1 1300* .8 1.4 57 ----- ----- Basin Index (%) 459* 105 LARAMIE RIVER Brooklyn Lake 10240 2.4 1.0 240* 2.9 2.0 145 Cinnabar Park 9574 2.8 .9 311* 3.9 2.5 156 Crow Creek 8330 .8 .0 * 1.3 1.6 81 Deadman Hill 10220 2.6 1.8 144* 2.5 2.1 119 Rawah 9020 1.3 .1 1300* 2.3 2.0 115 Roach 9700 2.0 .7 286* 1.7 2.0 85 Windy Peak 7900 1.3 .1 1300* .8 1.4 57 ----- ----- Basin Index (%) 287* 113 S. PLATTE Black Mountain 8920 .8 -M * 1.1 -M * Crow Creek 8330 .8 .0 * 1.3 1.6 81 Deadman Hill 10220 2.6 1.8 144* 2.5 2.1 119 ----- ----- Basin Index (%) 189* 103 LITTLE SNAKE RIVER Battle Mountain 7440 .7 .0 * 1.2 1.6 75 Divide Peak 8880 1.3 1.0 130* -M 2.7 * Elk River 8700 1.6 .0 * 1.3 2.2 59 Little Snake River 8915 2.3 .7 329* 4.2 4.0 105 Old Battle 10000 3.6 2.2 164* 3.6 3.5 103 Sage Creek Basin 7850 .9 .0 * 1.1 2.0 55 Sandstone RS 8150 1.3 .0 * 1.3 1.8 72 Whiskey Park 8950 3.6 .6 600* 4.3 2.4 179 ----- ----- Basin Index (%) 340* 97 UPPER GREEN RIVER Big Sandy Opening 9080 1.1 1.1 100* .9 1.6 56 Blind Bull Sum 8650 3.0 1.0 300* 1.4 1.7 82 East Rim Divide 7930 .2 .0 * .5 1.1 45 Elkhart Park G.S. 9400 .3 .7 43* .5 1.6 31 Gros Ventre Summit 8750 1.2 1.5 80 1.0 1.5 67 Gunsight Pass 9820 1.1 .8 138* 1.4 1.9 74 Indian Creek 9425 2.0 1.4 143* 1.5 1.9 79 Kendall R.S. 7740 .6 .0 * .8 1.3 62 Loomis Park 8240 .7 .2 350* 2.3 1.4 164 New Fork Lake 8340 .4 .2 200* .6 1.2 50 Pocket Creek 9360 -M -M * 1.2 -M * Snider Basin 8060 .6 .0 * 1.4 1.2 117 Spring Creek Divide 9000 2.2 .8 275* 2.4 1.8 133 Triple Peak 8500 2.9 .7 414* 2.8 1.9 147 ----- ----- Basin Index (%) 194* 87 LOWER GREEN RIVER Blacks Fork Jct 8869 .4 -M * 1.4 -M * Buck Pasture 9632 1.3 -M * 1.6 -M * EF Blacks Fork GS 9360 1.2 -M * 1.5 -M * Hams Fork 7840 .1 .0 * .6 1.2 50 Hewinta 9500 .0 .0 * 2.0 1.8 111 Hickerson Park 9122 .5 .0 * 1.0 1.6 62 Hole-in-Rock 9168 .6 .0 * .9 1.7 53 Indian Creek 9425 2.0 1.4 143* 1.5 1.9 79 Kelley R.S. 8180 1.0 .3 333* 1.6 1.6 100 Spirit Lk 10235 .4 -M * 1.1 -M * Steel Creek Park 10158 1.6 1.1 145* 2.1 2.0 105 ----- ----- Basin Index (%) 207* 82 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 1.0 -M * Bug Lake 7987 1.0 .0 * 1.5 1.9 79 Burts Miller Ranch 8000 .4 -M * .6 -M * Chalk Creek #1 9171 -M 1.1 * -M 2.6 * Hayden Fork 9130 .7 .0 * 2.3 2.1 110 Kelley R.S. 8180 1.0 .3 333* 1.6 1.6 100 Lily Lake 9133 .2 .5 40* 1.1 2.1 52 Monte Cristo 8932 2.1 .0 * 1.9 2.4 79 Salt River Summit 7640 .7 .0 * 1.2 1.4 86 Spring Creek Divide 9000 2.2 .8 275* 2.4 1.8 133 ----- ----- Basin Index (%) 494* 90 ----------------------------------------------------------------------------- -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. ---------------------------------------------------------------------------- -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.