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 28 , 2018 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 .1 .1 100* 1.6 1.8 89 Black Bear 8170 .6 2.5 24* 3.2 3.3 97 Blind Bull Sum 8650 .0 1.0 0* 2.0 1.7 118 Cottonwood Creek 7670 .1 .6 17* 2.2 2.2 100 East Rim Divide 7930 .0 .0 * 1.5 1.1 136 Grand Targhee 9260 2.3 4.2 55* 3.8 4.9 78 Granite Creek 6770 .0 .0 * 2.0 1.7 118 Grassy Lake 7265 .3 .8 38* 3.3 2.9 114 Gros Ventre Summit 8750 .2 1.6 12 1.1 1.5 73 Gunsight Pass 9820 .0 .8 0* 2.1 1.9 111 Lewis Lake Divide 7850 .0 .6 0* 2.3 2.8 82 Phillips Bench 8200 .0 .8 0* 2.4 2.1 114 Salt River Summit 7640 .0 .0 * 2.1 1.5 140 Snake River Station 6920 .2 .0 * 2.2 2.3 96 Spring Creek Divide 9000 .2 .9 22* 2.1 1.9 111 Thumb Divide 7980 .0 .3 0* 1.6 2.0 80 Togwotee Pass 9580 1.2 2.4 50* 1.7 2.3 74 Two Ocean Plateau 9240 2.4 2.9 83* 2.1 2.6 81 Willow Creek 8080 .0 .6 0* 3.6 3.1 116 Younts Peak 8350 -M 1.3 * -M 1.9 * ----- ----- Basin Index (%) 38* 98 MADISON-GALLATIN Black Bear 8170 .6 2.5 24* 3.2 3.3 97 Canyon 7870 .1 .3 33* 1.9 1.7 112 Madison Plateau 7750 .0 1.0 0* 2.2 2.5 88 West Yellowstone 6700 .1 .0 * 1.5 1.6 94 Whiskey Creek 6800 .2 .3 67* 1.6 2.0 80 ----- ----- Basin Index (%) 24* 94 YELLOWSTONE Beartooth Lake 9360 1.3 2.3 57* 1.1 1.9 58 Burnt Mtn 5880 .1 .0 * 2.7 2.9 93 Canyon 7870 .1 .3 33* 1.9 1.7 112 Cole Creek 7850 2.3 2.3 100 2.6 2.7 96 Evening Star 9200 1.8 2.1 86* 2.9 2.7 107 Fisher Creek 9100 1.5 2.3 65* 3.0 3.1 97 Northeast Entrance 7350 .1 .0 * 1.8 1.5 120 Parker Peak 9400 2.0 2.3 87 3.0 2.4 125 Sylvan Lake 8420 .7 1.3 54* 3.6 2.6 138 Thumb Divide 7980 .0 .3 0* 1.6 2.0 80 Two Ocean Plateau 9240 2.4 2.9 83* 2.1 2.6 81 White Mill 8700 .4 1.8 22* 1.4 2.4 58 Wolverine 7650 .0 .0 * 1.4 1.7 82 ----- ----- Basin Index (%) 71* 96 WIND RIVER Burroughs Creek 8750 .1 -M * 1.5 -M * Castle Creek 8400 .0 -M * 1.0 -M * Cold Springs 9630 1.0 .5 200* 1.5 1.7 88 Deer Park 9700 1.1 1.5 73* 1.9 2.6 73 Hobbs Park 10100 1.5 1.8 83 1.8 2.1 86 Kirwin 9550 1.0 1.4 71 1.3 1.7 76 Little Warm 9370 .3 1.0 30* 2.0 1.7 118 Owl Creek 8975 1.0 .6 167 1.4 1.2 117 South Pass 9040 .8 1.1 73* 1.8 2.0 90 St. Lawrence Alt 8620 .0 .5 0* 1.9 1.5 127 Togwotee Pass 9580 1.2 2.4 50* 1.7 2.3 74 Townsend Creek 8700 1.3 .7 186* 2.1 2.0 105 ----- ----- Basin Index (%) 80* 93 BIGHORN BASIN Bald Mtn. 9380 1.6 2.7 59 1.3 2.5 52 Bear Trap Meadow 8200 .6 .3 200* 1.4 1.5 93 Bone Springs Div 9350 1.6 2.3 70 1.8 2.5 72 Grave Springs 8550 .7 .8 88* 1.3 2.0 65 Kirwin 9550 1.0 1.4 71 1.3 1.7 76 Marquette 8760 .2 -M * 1.1 -M * Middle Powder 7760 .1 .8 12* 1.7 2.2 77 Owl Creek 8975 1.0 .6 167 1.4 1.2 117 Powder River Pass 9480 1.0 1.1 91 1.4 1.9 74 Shell Creek 9580 1.9 2.6 73 2.0 2.2 91 Timber Creek 7950 .0 .4 0* 1.2 1.8 67 ----- ----- Basin Index (%) 73 76 SHOSHONE RIVER Blackwater 9780 2.2 2.5 88* 2.7 2.5 108 Evening Star 9200 1.8 2.1 86* 2.9 2.7 107 Marquette 8760 .2 -M * 1.1 -M * Sylvan Road 7120 .0 .0 * 1.4 2.0 70 Younts Peak 8350 -M 1.3 * -M 1.9 * ----- ----- Basin Index (%) 87* 97 POWDER RIVER Bear Trap Meadow 8200 .6 .3 200* 1.4 1.5 93 Cloud Peak Reservoir 9860 2.0 1.6 125* 2.1 2.5 84 Grave Springs 8550 .7 .8 88* 1.3 2.0 65 Hansen Sawmill 8360 .2 .2 100* 1.8 1.7 106 Middle Powder 7760 .1 .8 12* 1.7 2.2 77 Powder River Pass 9480 1.0 1.1 91 1.4 1.9 74 Soldier Park 8720 .0 -M * 1.6 -M * ----- ----- Basin Index (%) 96* 82 TONGUE RIVER Big Goose 7990 .4 .9 44* 2.3 2.3 100 Bone Springs Div 9350 1.6 2.3 70 1.8 2.5 72 Burgess Junction 7880 .6 1.1 55* 1.6 2.2 73 Dome Lake 8880 1.2 1.5 80 2.0 2.4 83 Little Goose 8870 1.3 -M * 1.8 -M * Sucker Creek 8880 1.7 1.4 121 1.7 2.4 71 Tie Creek 6870 .0 .0 * 2.7 2.5 108 ----- ----- Basin Index (%) 76* 85 BELLE FOURCHE Cole Canyon 5910 .0 .0 * 1.7 1.7 100 ----- ----- Basin Index (%) * 100 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 1.0 2.0 50 North Rapid Creek 6130 .0 .0 * .8 1.9 42 ----- ----- Basin Index (%) * 46 UPPER N. PLATTE Arapaho Ridge 10960 2.1 2.6 81 3.8 2.9 131 Blackhall Mtn 9820 .6 -M * 3.6 -M * Columbine 9160 .2 .2 100* 3.3 2.3 143 Divide Peak 8880 .1 1.1 9* 3.3 2.8 118 Joe Wright 10120 1.5 2.1 71* 4.5 3.0 150 Laprele Creek 8375 .1 .2 50* 1.4 1.7 82 Med Bow 10500 1.3 -M * 3.2 -M * North French Creek 10130 .1 2.4 4* 2.6 2.8 93 Never Summer 10280 2.1 2.0 105* 3.6 -M * Old Battle 10000 2.0 2.3 87* 4.6 3.6 128 Rawah 9020 .2 .1 200* 3.2 2.1 152 Sage Creek Basin 7850 .1 .0 * 2.5 2.0 125 Sand Lake 10050 1.2 2.2 55* 1.8 2.7 67 South Brush Creek 8440 .0 .3 0* 1.8 2.0 90 Tower 10500 2.6 2.8 93* 3.5 3.8 92 Webber Springs 9250 .4 .9 44* 4.0 2.8 143 Willow Creek Pass 9540 1.4 .9 156* 2.9 1.8 161 Zirkel 9340 .2 .6 33* 3.5 3.4 103 ----- ----- Basin Index (%) 69* 118 SWEETWATER Deer Park 9700 1.1 1.5 73* 1.9 2.6 73 Larsen Creek 9000 .0 .0 * 1.6 -M * South Pass 9040 .8 1.1 73* 1.8 2.0 90 ----- ----- Basin Index (%) 73* 80 LOWER N. PLATTE Casper Mtn. 7900 .1 .9 11* 1.8 2.5 72 Laprele Creek 8375 .1 .2 50* 1.4 1.7 82 Reno Hill 8400 .2 1.1 18* 1.6 2.3 70 Windy Peak 7900 .2 .2 100* 1.1 1.5 73 ----- ----- Basin Index (%) 25* 74 LARAMIE RIVER Brooklyn Lake 10240 .2 1.1 18* 2.3 2.1 110 Cinnabar Park 9574 1.5 1.0 150* 2.8 2.5 112 Crow Creek 8330 .0 .0 * 1.6 1.7 94 Deadman Hill 10220 1.6 1.9 84* 2.3 2.2 105 Rawah 9020 .2 .1 200* 3.2 2.1 152 Roach 9700 1.1 .8 138* 2.6 2.1 124 ----- ----- Basin Index (%) 94* 117 S. PLATTE Black Mountain 8920 .3 -M * 1.5 -M * Crow Creek 8330 .0 .0 * 1.6 1.7 94 Deadman Hill 10220 1.6 1.9 84* 2.3 2.2 105 ----- ----- Basin Index (%) 84* 100 LITTLE SNAKE RIVER Battle Mountain 7440 .2 .0 * 2.4 1.7 141 Divide Peak 8880 .1 1.1 9* 3.3 2.8 118 Elk River 8700 .1 .0 * 2.2 2.2 100 Little Snake River 8915 .0 .7 0* 4.8 4.1 117 Old Battle 10000 2.0 2.3 87* 4.6 3.6 128 Sage Creek Basin 7850 .1 .0 * 2.5 2.0 125 Sandstone RS 8150 .0 .0 * 2.5 1.9 132 Whiskey Park 8950 .2 .6 33* 3.8 2.4 158 ----- ----- Basin Index (%) 57* 126 UPPER GREEN RIVER Big Sandy Opening 9080 .2 1.1 18* 1.8 1.6 112 Blind Bull Sum 8650 .0 1.0 0* 2.0 1.7 118 East Rim Divide 7930 .0 .0 * 1.5 1.1 136 Elkhart Park G.S. 9400 1.0 .7 143* 2.5 1.6 156 Gros Ventre Summit 8750 .2 1.6 12 1.1 1.5 73 Gunsight Pass 9820 .0 .8 0* 2.1 1.9 111 Kendall R.S. 7740 .1 .0 * 1.5 1.3 115 Loomis Park 8240 .3 .3 100* -M 1.5 * New Fork Lake 8340 .0 .3 0* 1.4 1.2 117 Pocket Creek 9360 1.2 -M * 2.6 -M * Snyder Basin 8060 .1 .0 * 1.8 1.2 150 Spring Creek Divide 9000 .2 .9 22* 2.1 1.9 111 Triple Peak 8500 .5 .8 62* 2.3 2.0 115 ----- ----- Basin Index (%) 35* 118 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 2.2 -M * Buck Pasture 9632 .2 -M * 3.3 -M * EF Blacks Fork GS 9360 .2 -M * 2.4 -M * Hams Fork 7840 .0 .0 * 1.9 1.2 158 Hewinta 9500 .0 .0 * 2.4 1.8 133 Hickerson Park 9122 1.0 .0 * 3.3 1.7 194 Hole-in-Rock 9168 .0 .0 * 2.9 1.8 161 Indian Creek 9425 .1 1.5 7* 1.8 1.9 95 Kelley R.S. 8180 .7 .4 175* 1.8 1.6 112 Spirit Lk 10235 1.6 -M * 4.6 -M * Steel Creek Park 10158 .7 1.2 58* 2.7 2.1 129 ----- ----- Basin Index (%) 81* 139 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 2.8 -M * Bug Lake 7987 .1 .0 * 3.7 1.9 195 Burts Miller Ranch 8000 .2 -M * 1.6 -M * Chalk Creek #1 9171 .3 1.2 25* 5.5 2.8 196 Hayden Fork 9130 .0 .0 * 4.1 2.2 186 Kelley R.S. 8180 .7 .4 175* 1.8 1.6 112 Lily Lake 9133 .0 .5 0* 2.9 2.2 132 Monte Cristo 8932 .4 .0 * 3.2 2.5 128 Salt River Summit 7640 .0 .0 * 2.1 1.5 140 ----- ----- Basin Index (%) 71* 159 ----------------------------------------------------------------------------- -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.