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 FRIDAY: OCTOBER 25 , 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 1.6 138 Black Bear 8170 3.8 2.2 173* 3.7 3.0 123 Blind Bull Sum 8650 2.9 .8 362* 1.2 1.6 75 Cottonwood Creek 7670 2.8 .3 933* 3.0 2.0 150 East Rim Divide 7930 .3 .0 * .5 1.0 50 Grand Targhee 9260 6.8 4.0 170* 3.4 4.7 72 Granite Creek 6770 .4 .0 * 1.0 1.5 67 Grassy Lake 7265 1.8 .4 450* 4.6 2.6 177 Gros Ventre Summit 8750 .9 1.3 69* .9 1.4 64 Gunsight Pass 9820 1.2 .8 150* 1.5 1.8 83 Lewis Lake Divide 7850 1.8 .3 600* 3.5 2.5 140 Phillips Bench 8200 2.7 .4 675* 2.6 1.9 137 Salt River Summit 7640 .6 .0 * 1.2 1.3 92 Snake River Station 6920 1.3 .0 * 2.2 2.1 105 Spring Creek Divide 9000 2.2 .7 314* 2.4 1.7 141 Thumb Divide 7980 1.1 .2 550* 1.9 1.8 106 Togwotee Pass 9580 4.0 2.2 182* 2.9 2.1 138 Two Ocean Plateau 9240 -M 2.6 * -M 2.4 * Willow Creek 8080 2.6 .4 650* 4.4 2.7 163 Younts Peak 8350 1.9 1.1 173* 2.0 1.8 111 ----- ----- Basin Index (%) 268* 115 MADISON-GALLATIN Black Bear 8170 3.8 2.2 173* 3.7 3.0 123 Canyon 7870 1.8 .3 600* 2.0 1.5 133 Madison Plateau 7750 2.5 .8 312* 2.6 2.2 118 West Yellowstone 6700 .8 .0 * 1.1 1.5 73 Whiskey Creek 6800 1.7 .2 850* 2.1 1.8 117 ----- ----- Basin Index (%) 303* 115 YELLOWSTONE Beartooth Lake 9360 3.4 1.9 179* 3.2 1.8 178 Burnt Mtn 5880 .3 .0 * 2.3 2.8 82 Canyon 7870 1.8 .3 600* 2.0 1.5 133 Cole Creek 7850 2.1 1.8 117 1.9 2.5 76 Evening Star 9200 4.7 1.8 261* 4.7 2.5 188 Fisher Creek 9100 4.4 1.9 232* 4.5 2.7 167 Northeast Entrance 7350 1.2 .0 * 2.3 1.4 164 Parker Peak 9400 4.2 2.0 210* 3.7 2.2 168 Sylvan Lake 8420 3.1 1.2 258* 3.8 2.4 158 Thumb Divide 7980 1.1 .2 550* 1.9 1.8 106 Two Ocean Plateau 9240 -M 2.6 * -M 2.4 * White Mill 8700 4.4 1.6 275* 3.0 2.2 136 Wolverine 7650 .6 .0 * 2.1 1.5 140 Younts Peak 8350 1.9 1.1 173* 2.0 1.8 111 ----- ----- Basin Index (%) 241* 138 WIND RIVER Burroughs Creek 8750 1.0 -M * 2.5 -M * Castle Creek 8400 .2 -M * .9 -M * Cold Springs 9630 .8 .3 267* .9 1.5 60 Deer Park 9700 1.1 1.4 79* 1.2 2.4 50 Hobbs Park 10100 1.1 1.4 79* 1.3 1.9 68 Kirwin 9550 3.0 1.2 250 1.7 1.5 113 Little Warm 9370 2.5 .8 312* 1.3 1.5 87 Owl Creek 8975 .4 .4 100* 1.0 1.0 100 South Pass 9040 .9 .8 112* .8 1.8 44 St. Lawrence Alt 8620 .4 .3 133* .6 1.4 43 Togwotee Pass 9580 4.0 2.2 182* 2.9 2.1 138 Townsend Creek 8700 .4 .4 100* .7 1.9 37 ----- ----- Basin Index (%) 159* 73 BIGHORN BASIN Bald Mtn. 9380 4.4 2.4 183 3.0 2.2 136 Bear Trap Meadow 8200 1.5 .3 500* 2.6 1.4 186 Bone Springs Div 9350 3.1 2.0 155 2.4 2.2 109 Grave Springs 8550 2.7 .6 450* 3.4 1.8 189 Kirwin 9550 3.0 1.2 250 1.7 1.5 113 Marquette 8760 .6 -M * 1.2 -M * Middle Powder 7760 2.5 .6 417* 3.1 2.0 155 Owl Creek 8975 .4 .4 100* 1.0 1.0 100 Powder River Pass 9480 2.7 .9 300* 2.8 1.8 156 Shell Creek 9580 3.5 2.4 146 2.1 2.0 105 Timber Creek 7950 .8 .2 400* 1.0 1.6 62 ----- ----- Basin Index (%) 224* 132 SHOSHONE RIVER Blackwater 9780 4.7 2.1 224* 3.7 2.2 168 Evening Star 9200 4.7 1.8 261* 4.7 2.5 188 Marquette 8760 .6 -M * 1.2 -M * Sylvan Lake 8420 3.1 1.2 258* 3.8 2.4 158 Sylvan Road 7120 1.3 .0 * 3.6 1.9 189 Younts Peak 8350 1.9 1.1 173* 2.0 1.8 111 ----- ----- Basin Index (%) 253* 165 POWDER RIVER Bear Trap Meadow 8200 1.5 .3 500* 2.6 1.4 186 Cloud Peak Reservoir 9860 2.1 1.4 150* 3.0 2.3 130 Grave Springs 8550 2.7 .6 450* 3.4 1.8 189 Hansen Sawmill 8360 .7 .2 350* 1.6 1.5 107 Middle Powder 7760 2.5 .6 417* 3.1 2.0 155 Powder River Pass 9480 2.7 .9 300* 2.8 1.8 156 Soldier Park 8720 .7 -M * 1.8 -M * ----- ----- Basin Index (%) 305* 153 TONGUE RIVER Big Goose 7990 .7 .7 100* 1.9 2.1 90 Bone Springs Div 9350 3.1 2.0 155 2.4 2.2 109 Burgess Junction 7880 1.8 .8 225* 3.7 2.0 185 Dome Lake 8880 1.5 1.2 125 1.6 2.3 70 Little Goose 8870 1.4 -M * 1.7 -M * Sucker Creek 8880 2.2 1.1 200* 2.3 2.2 105 Tie Creek 6870 1.2 .0 * 2.1 2.3 91 ----- ----- Basin Index (%) 181* 107 BELLE FOURCHE Blind Park 6890 1.7 .0 * 2.1 1.8 117 Cole Canyon 5910 1.1 .0 * 2.7 1.6 169 ----- ----- Basin Index (%) * 141 CHEYENNE RIVER BASIN Blind Park 6890 1.7 .0 * 2.1 1.8 117 North Rapid Creek 6130 2.0 .0 * 2.3 1.6 144 ----- ----- Basin Index (%) * 129 UPPER N. PLATTE Arapaho Ridge 10960 1.7 2.2 77* 1.9 2.6 73 Blackhall Mtn 9820 3.0 -M * 3.7 -M * Columbine 9160 2.6 .2 1300* -M 2.1 * Divide Peak 8880 1.5 .8 188* -M 2.5 * Joe Wright 10120 1.9 1.6 119* 3.4 2.8 121 Laprele Creek 8375 1.9 .2 950* 2.1 1.5 140 Med Bow 10500 5.0 -M * 4.9 -M * Never Summer 10280 2.2 1.6 138* 1.4 -M * North French Creek 10130 4.1 2.2 186* 4.3 2.6 165 Old Battle 10000 3.6 1.9 189* 3.4 3.2 106 Rawah 9020 1.2 .1 1200* 2.1 1.9 111 Sage Creek Basin 7850 .9 .0 * 1.2 1.9 63 Sand Lake 10050 3.3 1.9 174* 3.5 2.5 140 South Brush Creek 8440 1.5 .3 500* 1.8 1.9 95 Tower 10500 5.3 2.4 221* 4.8 3.4 141 Webber Springs 9250 2.3 .7 329* 2.6 2.5 104 Whiskey Park 8950 3.6 .5 720* 4.3 2.2 195 Willow Creek Pass 9540 1.4 .6 233* 1.1 1.6 69 Zirkel 9340 3.0 .4 750* -M 3.3 * ----- ----- Basin Index (%) 239* 119 SWEETWATER Deer Park 9700 1.1 1.4 79* 1.2 2.4 50 Larsen Creek 9000 .2 .0 * 1.1 -M * South Pass 9040 .9 .8 112* .8 1.8 44 ----- ----- Basin Index (%) 100* 48 LOWER N. PLATTE Casper Mtn. 7900 3.1 .6 517* 2.6 2.2 118 Laprele Creek 8375 1.9 .2 950* 2.1 1.5 140 Reno Hill 8400 2.7 1.0 270* 3.3 2.1 157 Windy Peak 7900 1.3 .0 * .8 1.3 62 ----- ----- Basin Index (%) 500* 124 LARAMIE RIVER Brooklyn Lake 10240 2.4 .8 300* 2.9 1.9 153 Cinnabar Park 9574 2.8 .9 311* 3.8 2.3 165 Crow Creek 8330 .8 .0 * 1.3 1.6 81 Deadman Hill 10220 2.5 1.6 156* 2.5 2.0 125 Rawah 9020 1.2 .1 1200* 2.1 1.9 111 Roach 9700 1.9 .6 317* 1.5 1.9 79 Windy Peak 7900 1.3 .0 * .8 1.3 62 ----- ----- Basin Index (%) 322* 116 S. PLATTE Black Mountain 8920 .7 -M * 1.1 -M * Crow Creek 8330 .8 .0 * 1.3 1.6 81 Deadman Hill 10220 2.5 1.6 156* 2.5 2.0 125 ----- ----- Basin Index (%) 206* 106 LITTLE SNAKE RIVER Battle Mountain 7440 .6 .0 * .9 1.5 60 Divide Peak 8880 1.5 .8 188* -M 2.5 * Elk River 8700 1.7 .0 * 1.2 2.0 60 Little Snake River 8915 2.4 .7 343* 3.9 3.8 103 Old Battle 10000 3.6 1.9 189* 3.4 3.2 106 Sage Creek Basin 7850 .9 .0 * 1.2 1.9 63 Sandstone RS 8150 1.2 .0 * 1.2 1.7 71 Whiskey Park 8950 3.6 .5 720* 4.3 2.2 195 ----- ----- Basin Index (%) 397* 99 UPPER GREEN RIVER Big Sandy Opening 9080 1.1 .9 122* .8 1.5 53 Blind Bull Sum 8650 2.9 .8 362* 1.2 1.6 75 East Rim Divide 7930 .3 .0 * .5 1.0 50 Elkhart Park G.S. 9400 .5 .6 83* .4 1.5 27 Gros Ventre Summit 8750 .9 1.3 69* .9 1.4 64 Gunsight Pass 9820 1.2 .8 150* 1.5 1.8 83 Indian Creek 9425 2.0 1.2 167* 1.5 1.7 88 Kendall R.S. 7740 .6 .0 * .9 1.2 75 Loomis Park 8240 .7 .2 350* 2.2 1.3 169 New Fork Lake 8340 .5 .0 * .7 1.0 70 Pocket Creek 9360 -M -M * 1.1 -M * Snider Basin 8060 .7 .0 * 1.4 1.1 127 Spring Creek Divide 9000 2.2 .7 314* 2.4 1.7 141 Triple Peak 8500 2.9 .6 483* 2.8 1.8 156 ----- ----- Basin Index (%) 232* 92 LOWER GREEN RIVER Blacks Fork Jct 8869 .5 -M * 1.5 -M * Buck Pasture 9632 1.2 -M * 1.7 -M * EF Blacks Fork GS 9360 1.2 -M * 1.5 -M * Hams Fork 7840 .4 .0 * .6 1.1 55 Hewinta 9500 .0 .0 * 1.6 1.7 94 Hickerson Park 9122 .3 .0 * 1.0 1.5 67 Hole-in-Rock 9168 .5 .0 * .9 1.6 56 Indian Creek 9425 2.0 1.2 167* 1.5 1.7 88 Kelley R.S. 8180 1.1 .2 550* 1.6 1.4 114 Spirit Lk 10235 .5 -M * 1.1 -M * Steel Creek Park 10158 1.6 1.0 160* 1.9 1.8 106 ----- ----- Basin Index (%) 246* 84 UPPER BEAR RIVER Bear River RS 8777 .2 -M * 1.0 -M * Bug Lake 7987 1.0 .0 * 1.5 1.7 88 Burts Miller Ranch 8000 .3 -M * .6 -M * Chalk Creek #1 9171 1.7 .8 212* 2.9 2.4 121 Hayden Fork 9130 .9 .0 * 2.2 2.0 110 Kelley R.S. 8180 1.1 .2 550* 1.6 1.4 114 Lily Lake 9133 .4 .5 80* 1.1 1.9 58 Monte Cristo 8932 2.1 .0 * 1.9 2.2 86 Salt River Summit 7640 .6 .0 * 1.2 1.3 92 Spring Creek Divide 9000 2.2 .7 314* 2.4 1.7 141 ----- ----- Basin Index (%) 455* 101 ----------------------------------------------------------------------------- -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.