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 MONDAY: OCTOBER 28 , 2019 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 1.3 .1 1300* 2.1 1.8 117 Black Bear 8170 3.8 2.5 152* 3.5 3.3 106 Blind Bull Sum 8650 2.8 1.0 280* 1.6 1.7 94 Cottonwood Creek 7670 2.8 .6 467* 2.8 2.2 127 East Rim Divide 7930 .0 .0 * .3 1.1 27 Grand Targhee 9260 6.7 4.2 160* 3.1 4.9 63 Granite Creek 6770 .2 .0 * .9 1.7 53 Grassy Lake 7265 1.4 .8 175* 4.7 2.9 162 Gros Ventre Summit 8750 1.0 1.6 62 .9 1.5 60 Gunsight Pass 9820 .8 .8 100* 1.2 1.9 63 Lewis Lake Divide 7850 1.3 .6 217* 3.5 2.8 125 Phillips Bench 8200 2.5 .8 312* 2.6 2.1 124 Salt River Summit 7640 .6 .0 * 1.0 1.5 67 Snake River Station 6920 1.2 .0 * 2.1 2.3 91 Spring Creek Divide 9000 2.0 .9 222* 2.3 1.9 121 Thumb Divide 7980 .9 .3 300* 1.9 2.0 95 Togwotee Pass 9580 4.2 2.4 175* 3.3 2.3 143 Two Ocean Plateau 9240 -M 2.9 * -M 2.6 * Willow Creek 8080 2.5 .6 417* 4.4 3.1 142 Younts Peak 8350 1.5 1.3 115* 1.0 1.9 53 ----- ----- Basin Index (%) 203* 101 MADISON-GALLATIN Black Bear 8170 3.8 2.5 152* 3.5 3.3 106 Canyon 7870 1.5 .3 500* 1.7 1.7 100 Madison Plateau 7750 2.5 1.0 250* 2.7 2.5 108 West Yellowstone 6700 .9 .0 * 1.2 1.6 75 Whiskey Creek 6800 1.4 .3 467* 1.8 2.0 90 ----- ----- Basin Index (%) 246* 98 YELLOWSTONE Beartooth Lake 9360 3.6 2.3 157* 3.2 1.9 168 Burnt Mtn 5880 .7 .0 * 2.5 2.9 86 Canyon 7870 1.5 .3 500* 1.7 1.7 100 Cole Creek 7850 3.5 2.3 152 2.3 2.7 85 Evening Star 9200 5.0 2.1 238* 4.8 2.7 178 Fisher Creek 9100 4.6 2.3 200* 4.5 3.1 145 Northeast Entrance 7350 1.4 .0 * 2.3 1.5 153 Parker Peak 9400 3.9 2.3 170 3.8 2.4 158 Sylvan Lake 8420 3.5 1.3 269* 3.7 2.6 142 Thumb Divide 7980 .9 .3 300* 1.9 2.0 95 Two Ocean Plateau 9240 -M 2.9 * -M 2.6 * White Mill 8700 4.4 1.8 244* 2.7 2.4 112 Wolverine 7650 .4 .0 * 2.3 1.7 135 Younts Peak 8350 1.5 1.3 115* 1.0 1.9 53 ----- ----- Basin Index (%) 214* 124 WIND RIVER Burroughs Creek 8750 1.1 -M * 2.4 -M * Castle Creek 8400 .0 -M * .8 -M * Cold Springs 9630 .6 .5 120* .6 1.7 35 Deer Park 9700 1.5 1.5 100* 1.2 2.6 46 Hobbs Park 10100 1.0 1.8 56 1.0 2.1 48 Kirwin 9550 3.0 1.4 214 1.5 1.7 88 Little Warm 9370 2.4 1.0 240* .9 1.7 53 Owl Creek 8975 .2 .6 33 .7 1.2 58 South Pass 9040 1.2 1.1 109* 1.2 2.0 60 St. Lawrence Alt 8620 .1 .5 20* .8 1.5 53 Togwotee Pass 9580 4.2 2.4 175* 3.3 2.3 143 Townsend Creek 8700 .9 .7 129* 1.1 2.0 55 ----- ----- Basin Index (%) 131* 65 BIGHORN BASIN Bald Mtn. 9380 4.5 2.7 167 2.1 2.5 84 Bear Trap Meadow 8200 1.5 .3 500* 2.7 1.5 180 Bone Springs Div 9350 3.5 2.3 152 2.2 2.5 88 Grave Springs 8550 2.9 .8 362* 3.6 2.0 180 Kirwin 9550 3.0 1.4 214 1.5 1.7 88 Marquette 8760 1.2 -M * 2.2 -M * Middle Powder 7760 3.0 .8 375* 3.5 2.2 159 Owl Creek 8975 .2 .6 33 .7 1.2 58 Powder River Pass 9480 3.0 1.1 273 2.8 1.9 147 Shell Creek 9580 3.4 2.6 131 2.1 2.2 95 Timber Creek 7950 1.3 .4 325* 1.8 1.8 100 ----- ----- Basin Index (%) 202 118 SHOSHONE RIVER Blackwater 9780 4.8 2.5 192* 3.8 2.5 152 Evening Star 9200 5.0 2.1 238* 4.8 2.7 178 Marquette 8760 1.2 -M * 2.2 -M * Sylvan Lake 8420 3.5 1.3 269* 3.7 2.6 142 Sylvan Road 7120 1.3 .0 * 3.8 2.0 190 Younts Peak 8350 1.5 1.3 115* 1.0 1.9 53 ----- ----- Basin Index (%) 224* 146 POWDER RIVER Bear Trap Meadow 8200 1.5 .3 500* 2.7 1.5 180 Cloud Peak Reservoir 9860 2.2 1.6 138* 2.8 2.5 112 Grave Springs 8550 2.9 .8 362* 3.6 2.0 180 Hansen Sawmill 8360 .9 .2 450* 1.8 1.7 106 Middle Powder 7760 3.0 .8 375* 3.5 2.2 159 Powder River Pass 9480 3.0 1.1 273 2.8 1.9 147 Soldier Park 8720 .3 -M * 1.7 -M * ----- ----- Basin Index (%) 281* 146 TONGUE RIVER Big Goose 7990 .9 .9 100* 2.4 2.3 104 Bone Springs Div 9350 3.5 2.3 152 2.2 2.5 88 Burgess Junction 7880 2.2 1.1 200* 2.7 2.2 123 Dome Lake 8880 1.5 1.5 100 1.6 2.4 67 Little Goose 8870 1.7 -M * 1.9 -M * Sucker Creek 8880 2.5 1.4 179 2.2 2.4 92 Tie Creek 6870 1.2 .0 * 2.1 2.5 84 ----- ----- Basin Index (%) 164* 92 BELLE FOURCHE Blind Park 6890 1.6 .0 * 2.3 2.0 115 Cole Canyon 5910 1.0 .0 * 2.6 1.7 153 ----- ----- Basin Index (%) * 132 CHEYENNE RIVER BASIN Blind Park 6890 1.6 .0 * 2.3 2.0 115 North Rapid Creek 6130 1.7 .0 * 2.4 1.9 126 ----- ----- Basin Index (%) * 121 UPPER N. PLATTE Arapaho Ridge 10960 2.0 2.6 77 2.3 2.9 79 Blackhall Mtn 9820 3.4 -M * 4.1 -M * Columbine 9160 2.7 .2 1350* -M 2.3 * Divide Peak 8880 1.6 1.1 145* -M 2.8 * Joe Wright 10120 2.1 2.1 100* 3.8 3.0 127 Laprele Creek 8375 2.2 .2 1100* 2.6 1.7 153 Med Bow 10500 5.2 -M * 5.3 -M * Never Summer 10280 2.5 2.0 125* 1.8 -M * North French Creek 10130 4.4 2.4 183* 4.7 2.8 168 Old Battle 10000 3.9 2.3 170* -M 3.6 * Rawah 9020 1.6 .1 1600* 2.7 2.1 129 Sage Creek Basin 7850 1.3 .0 * 1.2 2.0 60 Sand Lake 10050 3.5 2.2 159* 3.6 2.7 133 South Brush Creek 8440 1.9 .3 633* 2.2 2.0 110 Tower 10500 5.7 2.8 204* 5.1 3.8 134 Webber Springs 9250 2.7 .9 300* 3.0 2.8 107 Whiskey Park 8950 3.9 .6 650* 4.7 2.4 196 Willow Creek Pass 9540 1.8 .9 200* 1.6 1.8 89 Zirkel 9340 3.1 .6 517* 4.1 3.4 121 ----- ----- Basin Index (%) 220* 125 SWEETWATER Deer Park 9700 1.5 1.5 100* 1.2 2.6 46 Larsen Creek 9000 .0 .0 * 1.2 -M * South Pass 9040 1.2 1.1 109* 1.2 2.0 60 ----- ----- Basin Index (%) 104* 52 LOWER N. PLATTE Casper Mtn. 7900 3.8 .9 422* 2.8 2.5 112 Laprele Creek 8375 2.2 .2 1100* 2.6 1.7 153 Reno Hill 8400 3.1 1.1 282* -M 2.3 * Windy Peak 7900 1.3 .2 650* 1.0 1.5 67 ----- ----- Basin Index (%) 433* 112 LARAMIE RIVER Brooklyn Lake 10240 2.6 1.1 236* 3.2 2.1 152 Cinnabar Park 9574 3.2 1.0 320* 4.3 2.5 172 Crow Creek 8330 1.0 .0 * 1.5 1.7 88 Deadman Hill 10220 3.0 1.9 158* 2.9 2.2 132 Rawah 9020 1.6 .1 1600* 2.7 2.1 129 Roach 9700 2.2 .8 275* 1.7 2.1 81 Windy Peak 7900 1.3 .2 650* 1.0 1.5 67 ----- ----- Basin Index (%) 292* 122 S. PLATTE Black Mountain 8920 1.1 -M * 1.6 -M * Crow Creek 8330 1.0 .0 * 1.5 1.7 88 Deadman Hill 10220 3.0 1.9 158* 2.9 2.2 132 ----- ----- Basin Index (%) 211* 113 LITTLE SNAKE RIVER Battle Mountain 7440 1.1 .0 * 1.2 1.7 71 Divide Peak 8880 1.6 1.1 145* -M 2.8 * Elk River 8700 2.0 .0 * 1.3 2.2 59 Little Snake River 8915 2.4 .7 343* 4.3 4.1 105 Old Battle 10000 3.9 2.3 170* -M 3.6 * Sage Creek Basin 7850 1.3 .0 * 1.2 2.0 60 Sandstone RS 8150 1.5 .0 * 1.4 1.9 74 Whiskey Park 8950 3.9 .6 650* 4.7 2.4 196 ----- ----- Basin Index (%) 377* 99 UPPER GREEN RIVER Big Sandy Opening 9080 1.1 1.1 100* .9 1.6 56 Blind Bull Sum 8650 2.8 1.0 280* 1.6 1.7 94 East Rim Divide 7930 .0 .0 * .3 1.1 27 Elkhart Park G.S. 9400 .3 .7 43* .4 1.6 25 Gros Ventre Summit 8750 1.0 1.6 62 .9 1.5 60 Gunsight Pass 9820 .8 .8 100* 1.2 1.9 63 Indian Creek 9425 2.1 1.5 140* 1.6 1.9 84 Kendall R.S. 7740 .5 .0 * .5 1.3 38 Loomis Park 8240 .7 .3 233* 2.2 1.5 147 New Fork Lake 8340 .4 .3 133* .5 1.2 42 Pocket Creek 9360 -M -M * 1.3 -M * Snider Basin 8060 .4 .0 * 1.3 1.2 108 Spring Creek Divide 9000 2.0 .9 222* 2.3 1.9 121 Triple Peak 8500 2.7 .8 338* 2.3 2.0 115 ----- ----- Basin Index (%) 164* 78 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 1.6 -M * Buck Pasture 9632 1.0 -M * 1.8 -M * EF Blacks Fork GS 9360 1.0 -M * 1.5 -M * Hams Fork 7840 .1 .0 * .7 1.2 58 Hewinta 9500 .1 .0 * 1.9 1.8 106 Hickerson Park 9122 .6 .0 * 1.3 1.7 76 Hole-in-Rock 9168 .6 .0 * 1.0 1.8 56 Indian Creek 9425 2.1 1.5 140* 1.6 1.9 84 Kelley R.S. 8180 .7 .4 175* 1.4 1.6 88 Spirit Lk 10235 .4 -M * 1.3 -M * Steel Creek Park 10158 1.7 1.2 142* 2.2 2.1 105 ----- ----- Basin Index (%) 190* 83 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 1.1 -M * Bug Lake 7987 1.2 .0 * 1.7 1.9 89 Burts Miller Ranch 8000 .0 -M * .6 -M * Chalk Creek #1 9171 1.4 1.2 117* 1.8 2.8 64 Hayden Fork 9130 1.1 .0 * 2.4 2.2 109 Kelley R.S. 8180 .7 .4 175* 1.4 1.6 88 Lily Lake 9133 .3 .5 60* 1.3 2.2 59 Monte Cristo 8932 2.1 .0 * 2.0 2.5 80 Salt River Summit 7640 .6 .0 * 1.0 1.5 67 Spring Creek Divide 9000 2.0 .9 222* 2.3 1.9 121 ----- ----- Basin Index (%) 313* 84 ----------------------------------------------------------------------------- -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.