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 TUESDAY: NOVEMBER 7 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 3.8 .6 633* 5.1 2.7 189 Black Bear 8170 6.6 3.8 174 5.0 5.1 98 Blind Bull Sum 8650 5.4 2.1 257* 3.0 2.6 115 Cottonwood Creek 7670 2.0 1.4 143* 2.4 3.5 69 East Rim Divide 7930 1.4 .6 233* 2.1 1.8 117 Grand Targhee 9260 12.6 5.6 225 7.0 6.4 109 Granite Creek 6770 1.9 .7 271* 4.0 2.5 160 Grassy Lake 7265 3.3 1.8 183* 4.5 4.6 98 Gros Ventre Summit 8750 3.9 2.0 195 3.3 2.2 150 Gunsight Pass 9820 2.0 1.5 133 3.2 2.6 123 Lewis Lake Divide 7850 4.1 1.9 216* 5.9 4.4 134 Phillips Bench 8200 4.0 1.9 211* 4.9 3.3 148 Salt River Summit 7760 1.2 .5 240* 2.0 2.2 91 Snake River Station 6920 1.8 .6 300* 3.8 3.3 115 Spring Creek Divide 9000 3.3 1.9 174* 3.6 3.0 120 Thumb Divide 7980 2.1 1.1 191* 3.7 2.9 128 Togwotee Pass 9580 7.3 3.3 221 6.3 3.7 170 Two Ocean Plateau 9240 -M 4.3 * 6.1 4.1 149 Willow Creek 8380 3.9 1.8 217* 5.9 4.8 123 Younts Peak 8350 4.5 1.9 237 3.8 2.8 136 ----- ----- Basin Index (%) 215* 125 MADISON-GALLATIN Black Bear 8170 6.6 3.8 174 5.0 5.1 98 Canyon 7870 1.8 1.2 150* 2.8 2.5 112 Madison Plateau 7750 3.7 1.9 195* 3.7 3.7 100 West Yellowstone 6700 1.2 .3 400* 2.3 2.4 96 Whiskey Creek 6800 -M 1.0 * 2.1 3.0 70 ----- ----- Basin Index (%) 185* 95 YELLOWSTONE Beartooth Lake 9360 8.7 3.6 242 6.8 2.9 234 Burnt Mtn 5880 1.8 .0 * 3.9 3.7 105 Canyon 7870 1.8 1.2 150* 2.8 2.5 112 Cole Creek 7850 3.8 3.0 127 2.6 3.6 72 Evening Star 9200 8.8 3.2 275 8.2 4.2 195 Fisher Creek 9100 10.6 3.8 279 7.4 4.7 157 Northeast Entrance 7350 1.5 .3 500* 3.0 2.2 136 Parker Peak 9400 8.2 3.2 256 5.6 3.2 175 Sylvan Lake 8420 6.1 2.3 265 5.3 3.9 136 Thumb Divide 7980 2.1 1.1 191* 3.7 2.9 128 Two Ocean Plateau 9240 -M 4.3 * 6.1 4.1 149 White Mill 8700 9.2 2.8 329 4.7 3.7 127 Wolverine 7650 -M .4 * -M 2.3 * ----- ----- Basin Index (%) 256 144 WIND RIVER Burroughs Creek 8750 2.8 -M * 2.8 -M * Castle Creek 8400 1.6 -M * 2.9 -M * Cold Springs 9630 1.5 1.2 125 2.1 2.3 91 Deer Park 9700 2.2 2.0 110 2.4 3.6 67 Hobbs Park 10100 4.9 2.3 213 3.8 2.7 141 Kirwin 9550 5.3 2.0 265 3.7 2.5 148 Little Warm 9370 4.7 1.5 313 3.9 2.4 162 Owl Creek 8975 .9 1.0 90 2.4 1.5 160 South Pass 9040 1.5 1.7 88 1.2 3.0 40 St. Lawrence Alt 8620 1.0 1.0 100 2.9 2.1 138 Togwotee Pass 9580 7.3 3.3 221 6.3 3.7 170 Townsend Creek 8700 1.4 1.2 117 2.2 2.7 81 ----- ----- Basin Index (%) 178 117 BIGHORN BASIN Bald Mtn. 9380 4.5 3.7 122 2.5 3.3 76 Bear Trap Meadow 8200 1.2 .7 171 2.7 2.1 129 Bone Springs Div 9350 3.0 3.2 94 2.5 3.2 78 Grave Springs 8550 1.2 1.1 109 1.6 2.6 62 Kirwin 9550 5.3 2.0 265 3.7 2.5 148 Marquette 8760 1.5 -M * 3.4 -M * Middle Powder 7760 1.5 1.3 115 1.3 2.9 45 Owl Creek 8975 .9 1.0 90 2.4 1.5 160 Powder River Pass 9480 4.1 1.7 241 3.5 2.6 135 Shell Creek 9580 6.2 3.4 182 3.4 2.9 117 Timber Creek 7950 1.0 .8 125 1.3 2.4 54 ----- ----- Basin Index (%) 153 96 SHOSHONE RIVER Blackwater 9780 9.4 3.4 276 6.5 3.6 181 Evening Star 9200 8.8 3.2 275 8.2 4.2 195 Marquette 8760 1.5 -M * 3.4 -M * Sylvan Road 7120 2.3 .6 383* 4.2 3.0 140 Younts Peak 8350 4.5 1.9 237 3.8 2.8 136 ----- ----- Basin Index (%) 275 167 POWDER RIVER Bear Trap Meadow 8200 1.2 .7 171 2.7 2.1 129 Cloud Peak Reservoir 9860 1.8 2.3 78 2.7 3.3 82 Grave Springs 8550 1.2 1.1 109 1.6 2.6 62 Hansen Sawmill 8360 1.2 .8 150 2.3 2.1 110 Middle Powder 7760 1.5 1.3 115 1.3 2.9 45 Powder River Pass 9480 4.1 1.7 241 3.5 2.6 135 Soldier Park 8720 .7 -M * 2.4 -M * ----- ----- Basin Index (%) 139 90 TONGUE RIVER Big Goose 7990 .6 1.2 50 1.5 2.8 54 Bone Springs Div 9350 3.0 3.2 94 2.5 3.2 78 Burgess Junction 7880 .9 1.6 56 1.5 2.8 54 Dome Lake 8880 2.0 2.3 87 2.4 3.2 75 Little Goose 8870 .9 -M * 2.4 -M * Sucker Creek 8880 1.0 1.9 53 -M 3.2 * Tie Creek 6870 .3 .3 100* -M 3.0 * ----- ----- Basin Index (%) 74 66 BELLE FOURCHE Cole Canyon 5910 .7 .0 * 1.9 2.5 76 ----- ----- Basin Index (%) * 76 CHEYENNE RIVER BASIN Blind Park 6890 .7 .9 78 2.6 3.1 84 North Rapid Creek 6130 .4 .6 67* 1.5 2.8 54 ----- ----- Basin Index (%) 73 69 UPPER N. PLATTE Arapaho Ridge 10960 4.1 3.3 124 4.7 4.0 118 Blackhall Mtn 9820 4.9 -M * 5.3 -M * Columbine 9160 1.9 1.2 158* 5.0 3.4 147 Divide Peak 8880 1.4 2.1 67 4.4 3.9 113 Joe Wright 10120 2.5 3.4 74 7.2 4.4 164 Laprele Creek 8375 .4 .9 44* 1.7 2.5 68 Med Bow 10500 6.2 -M * 5.6 -M * North French Creek 10130 4.3 3.2 134* 5.1 4.2 121 Never Summer 10280 4.6 2.7 170 4.7 -M * Old Battle 10000 4.4 3.4 129* 4.3 5.2 83 Rawah 9020 1.9 .8 238* 4.7 2.9 162 Sage Creek Basin 7850 .8 .9 89* 2.3 2.8 82 Sand Lake 10050 5.1 3.5 146 4.5 3.9 115 South Brush Creek 8440 1.8 .9 200* 3.1 2.9 107 Tower 10500 4.7 5.3 89 7.4 5.8 128 Webber Springs 9250 2.1 1.7 124* 4.3 4.0 108 Willow Creek Pass 9540 3.9 1.7 229 4.1 2.5 164 Zirkel 9340 2.3 1.7 135* 6.1 4.8 127 ----- ----- Basin Index (%) 126* 120 SWEETWATER Deer Park 9700 2.2 2.0 110 2.4 3.6 67 Larsen Creek 9000 .4 .5 80* 1.9 -M * South Pass 9040 1.5 1.7 88 1.2 3.0 40 ----- ----- Basin Index (%) 98 55 LOWER N. PLATTE Casper Mtn. 7900 .8 1.5 53 .9 3.5 26 Laprele Creek 8375 .4 .9 44* 1.7 2.5 68 Reno Hill 8400 1.2 1.9 63 2.2 3.3 67 Windy Peak 7900 .6 .7 86* 1.6 2.2 73 ----- ----- Basin Index (%) 60 56 LARAMIE RIVER Brooklyn Lake 10240 2.0 1.8 111* 3.5 3.0 117 Cinnabar Park 9574 3.7 2.0 185* 5.3 3.7 143 Crow Creek 8330 .7 .7 100* 3.0 2.3 130 Deadman Hill 10220 5.3 2.4 221 5.5 3.0 183 Rawah 9020 1.9 .8 238* 4.7 2.9 162 Roach 9700 3.2 1.8 178 4.9 3.1 158 ----- ----- Basin Index (%) 177* 149 S. PLATTE Black Mountain 8920 1.9 -M * 3.8 -M * Crow Creek 8330 .7 .7 100* 3.0 2.3 130 Deadman Hill 10220 5.3 2.4 221 5.5 3.0 183 ----- ----- Basin Index (%) 194* 160 LITTLE SNAKE RIVER Battle Mountain 7440 .4 .0 * 2.0 2.6 77 Divide Peak 8880 1.4 2.1 67 4.4 3.9 113 Elk River 8700 1.2 .5 240* 3.4 3.1 110 Little Snake River 8915 1.9 1.3 146* 10.2 5.3 192 Old Battle 10000 4.4 3.4 129* 4.3 5.2 83 Sage Creek Basin 7850 .8 .9 89* 2.3 2.8 82 Sandstone RS 8150 1.1 .5 220* 2.0 3.0 67 Whiskey Park 8950 1.8 1.8 100* 4.4 3.8 116 ----- ----- Basin Index (%) 124* 111 UPPER GREEN RIVER Big Sandy Opening 9080 1.9 2.0 95 2.5 2.2 114 Blind Bull Sum 8650 5.4 2.1 257* 3.0 2.6 115 East Rim Divide 7930 1.4 .6 233* 2.1 1.8 117 Elkhart Park G.S. 9400 1.9 1.4 136 2.3 2.3 100 Gros Ventre Summit 8750 3.9 2.0 195 3.3 2.2 150 Gunsight Pass 9820 2.0 1.5 133 3.2 2.6 123 Kendall R.S. 7740 1.8 .8 225* 2.4 2.1 114 Loomis Park 8240 2.3 1.1 209* 2.6 2.3 113 New Fork Lake 8340 1.4 1.0 140* .9 1.9 47 Pocket Creek 9360 2.6 -M * 2.5 -M * Snider Basin 8060 .7 .5 140* 1.6 1.9 84 Spring Creek Divide 9000 3.3 1.9 174* 3.6 3.0 120 Triple Peak 8500 3.4 1.9 179* 4.8 3.1 155 ----- ----- Basin Index (%) 175* 115 LOWER GREEN RIVER Blacks Fork Jct 8869 .3 -M * 1.3 -M * Buck Pasture 9632 .9 -M * 1.8 -M * EF Blacks Fork GS 9360 .5 -M * 1.4 -M * Hams Fork 7840 .3 .5 60* 1.1 1.8 61 Hewinta 9500 .3 .4 75* 1.4 2.6 54 Hickerson Park 9122 .8 .6 133* .7 2.5 28 Hole-in-Rock 9168 .7 .5 140* 1.0 2.4 42 Indian Creek 9425 2.5 2.7 93 2.2 3.0 73 Kelley R.S. 8180 1.2 1.0 120* 1.7 2.5 68 Spirit Lk 10235 .7 -M * 1.1 -M * Steel Creek Park 10158 2.0 2.0 100 1.9 3.0 63 ----- ----- Basin Index (%) 101* 56 UPPER BEAR RIVER Bear River RS 8777 .5 -M * 1.2 -M * Bug Lake 7987 1.3 1.0 130* 2.3 2.7 85 Burts Miller Ranch 8000 .3 -M * .7 -M * Chalk Creek #1 9171 .7 2.2 32* 1.9 3.9 49 Hayden Fork 9130 .9 .7 129* 1.7 3.3 52 Kelley R.S. 8180 1.2 1.0 120* 1.7 2.5 68 Lily Lake 9133 .3 1.0 30* 1.4 3.0 47 Monte Cristo 8932 2.4 1.2 200* 2.4 3.5 69 Salt River Summit 7760 1.2 .5 240* 2.0 2.2 91 ----- ----- Basin Index (%) 105* 64 ----------------------------------------------------------------------------- -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.