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: NOVEMBER 9 , 2018 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7060 1.3 .8 162* 3.5 3.1 113 Black Bear 8170 3.1 4.3 72 5.8 5.6 104 Blind Bull Sum 8650 1.8 2.4 75* 3.1 2.9 107 Cottonwood Creek 7670 2.3 1.6 144* 4.7 3.8 124 East Rim Divide 7930 .4 .8 50* 2.1 1.9 111 Grand Targhee 9260 7.3 5.9 124 8.0 6.6 121 Granite Creek 6770 .9 .8 112* 3.6 2.8 129 Grassy Lake 7265 1.9 2.2 86* 5.4 5.1 106 Gros Ventre Summit 8750 .8 2.2 36 1.8 2.4 75 Gunsight Pass 9820 1.0 1.8 56 3.3 2.8 118 Lewis Lake Divide 7850 2.0 2.2 91* 5.3 4.9 108 Phillips Bench 8200 1.6 2.2 73* 5.2 3.7 141 Salt River Summit 7640 .3 .6 50* 2.7 2.4 112 Snake River Station 6920 1.1 .8 138* 4.8 3.6 133 Spring Creek Divide 9000 2.4 2.3 104* 4.2 3.4 124 Thumb Divide 7980 .5 1.4 36* 2.9 3.1 94 Togwotee Pass 9580 4.5 3.6 125 5.5 4.0 138 Two Ocean Plateau 9240 4.9 4.6 107 4.4 4.5 98 Willow Creek 8080 2.7 2.1 129* 6.8 5.3 128 Younts Peak 8350 -M 2.1 * -M 3.0 * ----- ----- Basin Index (%) 96* 116 MADISON-GALLATIN Black Bear 8170 3.1 4.3 72 5.8 5.6 104 Canyon 7870 1.0 1.3 77 2.8 2.8 100 Madison Plateau 7750 1.7 2.1 81* 3.7 4.0 92 West Yellowstone 6700 .8 .5 160* 2.4 2.5 96 Whiskey Creek 6800 .5 1.2 42* 1.8 3.3 55 ----- ----- Basin Index (%) 76* 91 YELLOWSTONE Beartooth Lake 9360 3.8 3.8 100 3.0 3.2 94 Burnt Mtn 5880 .4 .0 * 3.0 3.9 77 Canyon 7870 1.0 1.3 77 2.8 2.8 100 Cole Creek 7850 2.6 3.1 84 4.4 3.7 119 Evening Star 9200 5.1 3.6 142 7.2 4.7 153 Fisher Creek 9100 4.6 4.2 110 7.5 5.2 144 Northeast Entrance 7350 1.6 .4 400* 4.1 2.5 164 Parker Peak 9400 4.8 3.4 141 6.0 3.5 171 Sylvan Lake 8420 4.0 2.6 154 7.8 4.2 186 Thumb Divide 7980 .5 1.4 36* 2.9 3.1 94 Two Ocean Plateau 9240 4.9 4.6 107 4.4 4.5 98 White Mill 8700 3.4 3.0 113 3.8 4.1 93 Wolverine 7650 .9 .5 180* 3.0 2.5 120 ----- ----- Basin Index (%) 118 125 WIND RIVER Burroughs Creek 8750 .7 -M * 1.7 -M * Castle Creek 8400 .0 -M * .9 -M * Cold Springs 9630 .9 1.3 69 1.2 2.5 48 Deer Park 9700 1.1 2.3 48 1.7 3.8 45 Hobbs Park 10100 1.5 2.5 60 1.6 2.9 55 Kirwin 9550 .9 2.2 41 1.0 2.6 38 Little Warm 9370 .5 1.6 31 1.4 2.6 54 Owl Creek 8975 .9 1.0 90 1.3 1.6 81 South Pass 9040 .5 1.9 26 1.4 3.2 44 St. Lawrence Alt 8620 .0 1.0 0 2.0 2.2 91 Togwotee Pass 9580 4.5 3.6 125 5.5 4.0 138 Townsend Creek 8700 .8 1.3 62 1.9 2.8 68 ----- ----- Basin Index (%) 62 67 BIGHORN BASIN Bald Mtn. 9380 5.0 3.8 132 2.8 3.5 80 Bear Trap Meadow 8200 1.5 .8 188 2.1 2.2 95 Bone Springs Div 9350 3.6 3.3 109 3.1 3.4 91 Grave Springs 8550 1.5 1.2 125 1.8 2.7 67 Kirwin 9550 .9 2.2 41 1.0 2.6 38 Marquette 8760 .6 -M * 1.5 -M * Middle Powder 7760 2.3 1.4 164 2.3 3.0 77 Owl Creek 8975 .9 1.0 90 1.3 1.6 81 Powder River Pass 9480 2.5 1.7 147 2.3 2.7 85 Shell Creek 9580 4.4 3.5 126 4.0 3.1 129 Timber Creek 7950 .0 .9 0 1.4 2.4 58 ----- ----- Basin Index (%) 114 81 SHOSHONE RIVER Blackwater 9780 5.5 3.7 149 6.1 3.9 156 Evening Star 9200 5.1 3.6 142 7.2 4.7 153 Marquette 8760 .6 -M * 1.5 -M * Sylvan Road 7120 1.5 .8 188* 3.9 3.2 122 Younts Peak 8350 -M 2.1 * -M 3.0 * ----- ----- Basin Index (%) 149* 146 POWDER RIVER Bear Trap Meadow 8200 1.5 .8 188 2.1 2.2 95 Cloud Peak Reservoir 9860 3.3 2.4 138 3.1 3.4 91 Grave Springs 8550 1.5 1.2 125 1.8 2.7 67 Hansen Sawmill 8360 .3 .9 33 2.0 2.3 87 Middle Powder 7760 2.3 1.4 164 2.3 3.0 77 Powder River Pass 9480 2.5 1.7 147 2.3 2.7 85 Soldier Park 8720 .2 -M * 2.1 -M * ----- ----- Basin Index (%) 136 83 TONGUE RIVER Big Goose 7990 1.0 1.2 83 3.1 2.9 107 Bone Springs Div 9350 3.6 3.3 109 3.1 3.4 91 Burgess Junction 7880 1.5 1.7 88 2.6 3.0 87 Dome Lake 8880 2.0 2.4 83 2.7 3.4 79 Little Goose 8870 2.0 -M * 2.5 -M * Sucker Creek 8880 2.8 2.0 140 2.7 3.4 79 Tie Creek 6870 .3 .3 100* 3.6 3.1 116 ----- ----- Basin Index (%) 103 93 BELLE FOURCHE Cole Canyon 5910 .6 .0 * -M 2.6 * ----- ----- Basin Index (%) * * CHEYENNE RIVER BASIN Blind Park 6890 .9 1.0 90 .8 3.3 24 North Rapid Creek 6130 .3 .8 38 1.3 2.9 45 ----- ----- Basin Index (%) 67 34 UPPER N. PLATTE Arapaho Ridge 10960 4.4 3.4 129 6.1 4.2 145 Blackhall Mtn 9820 3.6 -M * 7.1 -M * Columbine 9160 2.8 1.4 200* 6.0 3.8 158 Divide Peak 8880 1.1 2.2 50 4.3 4.2 102 Joe Wright 10120 4.1 3.6 114 8.4 4.8 175 Laprele Creek 8375 1.7 1.0 170 2.7 2.7 100 Med Bow 10500 6.4 -M * 8.3 -M * North French Creek 10130 6.2 3.5 177 8.1 4.5 180 Never Summer 10280 4.4 2.8 157 6.0 -M * Old Battle 10000 5.1 3.8 134 7.4 5.7 130 Rawah 9020 1.7 .9 189* 4.4 3.1 142 Sage Creek Basin 7850 .8 1.0 80* 3.6 2.9 124 Sand Lake 10050 4.4 3.8 116 4.1 4.2 98 South Brush Creek 8440 1.9 1.0 190* 3.0 3.0 100 Tower 10500 7.4 5.8 128 7.0 6.2 113 Webber Springs 9250 2.5 2.0 125* -M 4.3 * Willow Creek Pass 9540 2.9 1.8 161 4.2 2.7 156 Zirkel 9340 4.0 1.7 235* 7.5 5.0 150 ----- ----- Basin Index (%) 140 135 SWEETWATER Deer Park 9700 1.1 2.3 48 1.7 3.8 45 Larsen Creek 9000 .0 .7 0* 2.1 -M * South Pass 9040 .5 1.9 26 1.4 3.2 44 ----- ----- Basin Index (%) 33 44 LOWER N. PLATTE Casper Mtn. 7900 1.8 1.6 112 2.3 3.6 64 Laprele Creek 8375 1.7 1.0 170 2.7 2.7 100 Reno Hill 8400 1.6 2.1 76 2.3 3.4 68 Windy Peak 7900 1.1 .7 157* 1.3 2.3 57 ----- ----- Basin Index (%) 115 72 LARAMIE RIVER Brooklyn Lake 10240 2.9 2.0 145* 4.9 3.2 153 Cinnabar Park 9574 4.5 2.3 196 6.3 3.8 166 Crow Creek 8330 .2 .6 33* 2.3 2.4 96 Deadman Hill 10220 3.4 2.5 136 3.9 3.2 122 Rawah 9020 1.7 .9 189* 4.4 3.1 142 Roach 9700 2.3 1.9 121 4.0 3.3 121 ----- ----- Basin Index (%) 147 136 S. PLATTE Black Mountain 8920 1.1 -M * 2.4 -M * Crow Creek 8330 .2 .6 33* 2.3 2.4 96 Deadman Hill 10220 3.4 2.5 136 3.9 3.2 122 ----- ----- Basin Index (%) 116* 111 LITTLE SNAKE RIVER Battle Mountain 7440 1.0 .2 500* 1.2 2.8 43 Divide Peak 8880 1.1 2.2 50 4.3 4.2 102 Elk River 8700 1.8 .6 300* 3.2 3.3 97 Little Snake River 8915 2.7 1.4 193* 8.5 5.5 155 Old Battle 10000 5.1 3.8 134 7.4 5.7 130 Sage Creek Basin 7850 .8 1.0 80* 3.6 2.9 124 Sandstone RS 8150 1.5 .8 188* 3.3 3.2 103 Whiskey Park 8950 3.8 2.0 190* 7.5 4.1 183 ----- ----- Basin Index (%) 148* 123 UPPER GREEN RIVER Big Sandy Opening 9080 .8 2.3 35 2.3 2.5 92 Blind Bull Sum 8650 1.8 2.4 75* 3.1 2.9 107 East Rim Divide 7930 .4 .8 50* 2.1 1.9 111 Elkhart Park G.S. 9400 1.5 1.6 94 2.8 2.5 112 Gros Ventre Summit 8750 .8 2.2 36 1.8 2.4 75 Gunsight Pass 9820 1.0 1.8 56 3.3 2.8 118 Kendall R.S. 7740 .4 1.0 40* 2.0 2.2 91 Loomis Park 8240 1.6 1.4 114* -M 2.6 * New Fork Lake 8340 .5 1.1 45 1.7 2.0 85 Pocket Creek 9360 2.2 -M * 3.4 -M * Snyder Basin 8060 .9 .7 129* 3.0 2.1 143 Spring Creek Divide 9000 2.4 2.3 104* 4.2 3.4 124 Triple Peak 8500 3.2 2.1 152* 5.3 3.5 151 ----- ----- Basin Index (%) 78* 112 LOWER GREEN RIVER Blacks Fork Jct 8869 .0 -M * 2.4 -M * Buck Pasture 9632 .6 -M * 4.3 -M * EF Blacks Fork GS 9360 .4 -M * 2.9 -M * Hams Fork 7840 .4 .7 57* 2.5 2.0 125 Hewinta 9500 .0 .5 0* 2.6 2.8 93 Hickerson Park 9122 .7 .7 100* 3.5 2.6 135 Hole-in-Rock 9168 .0 .6 0* 2.8 2.5 112 Indian Creek 9425 1.5 2.9 52 2.7 3.3 82 Kelley R.S. 8180 -M 1.1 * -M 2.8 * Spirit Lk 10235 1.9 -M * 4.8 -M * Steel Creek Park 10158 1.1 2.2 50 3.3 3.2 103 ----- ----- Basin Index (%) 49* 106 UPPER BEAR RIVER Bear River RS 8777 .0 -M * 3.0 -M * Bug Lake 7987 .2 1.2 17* 4.2 3.1 135 Burts Miller Ranch 8000 .2 -M * 1.6 -M * Chalk Creek #1 9171 .5 2.4 21* 6.1 4.2 145 Hayden Fork 9130 .3 .9 33* 4.6 3.5 131 Kelley R.S. 8180 -M 1.1 * -M 2.8 * Lily Lake 9133 .0 1.1 0* 3.3 3.2 103 Monte Cristo 8932 .8 1.4 57* 3.9 3.9 100 Salt River Summit 7640 .3 .6 50* 2.7 2.4 112 ----- ----- Basin Index (%) 28* 122 ----------------------------------------------------------------------------- -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.