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 THURSDAY: NOVEMBER 9 , 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 .8 475* 5.2 3.1 168 Black Bear 8170 6.8 4.3 158 5.6 5.6 100 Blind Bull Sum 8650 5.4 2.4 225* 3.1 2.9 107 Cottonwood Creek 7670 2.1 1.6 131* 3.2 3.8 84 East Rim Divide 7930 1.4 .8 175* 2.2 1.9 116 Grand Targhee 9260 12.7 5.9 215 7.3 6.6 111 Granite Creek 6770 1.8 .8 225* 3.9 2.8 139 Grassy Lake 7265 3.3 2.2 150* 4.9 5.1 96 Gros Ventre Summit 8750 4.0 2.2 182 3.6 2.4 150 Gunsight Pass 9820 2.1 1.8 117 3.3 2.8 118 Lewis Lake Divide 7850 4.3 2.2 195* 6.3 4.9 129 Phillips Bench 8200 4.0 2.2 182* 5.0 3.7 135 Salt River Summit 7760 1.1 .6 183* 2.2 2.4 92 Snake River Station 6920 1.8 .8 225* 4.2 3.6 117 Spring Creek Divide 9000 3.4 2.3 148* 3.8 3.4 112 Thumb Divide 7980 2.4 1.4 171* 3.9 3.1 126 Togwotee Pass 9580 7.2 3.6 200 6.4 4.0 160 Two Ocean Plateau 9240 -M 4.6 * 6.2 4.5 138 Willow Creek 8380 3.9 2.1 186* 6.0 5.3 113 Younts Peak 8350 4.7 2.1 224 4.2 3.0 140 ----- ----- Basin Index (%) 190* 121 MADISON-GALLATIN Black Bear 8170 6.8 4.3 158 5.6 5.6 100 Canyon 7870 1.8 1.3 138 2.8 2.8 100 Madison Plateau 7750 3.8 2.1 181* 4.3 4.0 108 West Yellowstone 6700 1.3 .5 260* 2.3 2.5 92 Whiskey Creek 6800 -M 1.2 * 2.6 3.3 79 ----- ----- Basin Index (%) 167* 97 YELLOWSTONE Beartooth Lake 9360 8.9 3.8 234 7.2 3.2 225 Burnt Mtn 5880 1.9 .0 * 4.1 3.9 105 Canyon 7870 1.8 1.3 138 2.8 2.8 100 Cole Creek 7850 3.9 3.1 126 2.9 3.7 78 Evening Star 9200 9.0 3.6 250 8.5 4.7 181 Fisher Creek 9100 10.6 4.2 252 8.2 5.2 158 Northeast Entrance 7350 1.5 .4 375* 3.1 2.5 124 Parker Peak 9400 8.5 3.4 250 5.8 3.5 166 Sylvan Lake 8420 6.0 2.6 231 5.5 4.2 131 Thumb Divide 7980 2.4 1.4 171* 3.9 3.1 126 Two Ocean Plateau 9240 -M 4.6 * 6.2 4.5 138 White Mill 8700 9.2 3.0 307 5.0 4.1 122 Wolverine 7650 -M .5 * -M 2.5 * ----- ----- Basin Index (%) 238 139 WIND RIVER Burroughs Creek 8750 2.8 -M * 3.1 -M * Castle Creek 8400 1.6 -M * 2.9 -M * Cold Springs 9630 1.7 1.3 131 2.6 2.5 104 Deer Park 9700 2.3 2.3 100 2.7 3.8 71 Hobbs Park 10100 5.0 2.5 200 4.3 2.9 148 Kirwin 9550 5.5 2.2 250 4.0 2.6 154 Little Warm 9370 5.0 1.6 312 4.1 2.6 158 Owl Creek 8975 1.0 1.0 100 2.5 1.6 156 South Pass 9040 1.6 1.9 84 1.4 3.2 44 St. Lawrence Alt 8620 1.1 1.0 110 2.9 2.2 132 Togwotee Pass 9580 7.2 3.6 200 6.4 4.0 160 Townsend Creek 8700 1.5 1.3 115 2.6 2.8 93 ----- ----- Basin Index (%) 171 119 BIGHORN BASIN Bald Mtn. 9380 4.7 3.8 124 3.0 3.5 86 Bear Trap Meadow 8200 1.4 .8 175 2.8 2.2 127 Bone Springs Div 9350 3.0 3.3 91 2.8 3.4 82 Grave Springs 8550 1.3 1.2 108 1.8 2.7 67 Kirwin 9550 5.5 2.2 250 4.0 2.6 154 Marquette 8760 1.7 -M * 3.6 -M * Middle Powder 7760 1.6 1.4 114 1.6 3.0 53 Owl Creek 8975 1.0 1.0 100 2.5 1.6 156 Powder River Pass 9480 4.2 1.7 247 3.8 2.7 141 Shell Creek 9580 6.3 3.5 180 3.7 3.1 119 Timber Creek 7950 1.1 .9 122 1.2 2.4 50 ----- ----- Basin Index (%) 152 100 SHOSHONE RIVER Blackwater 9780 9.6 3.7 259 6.9 3.9 177 Evening Star 9200 9.0 3.6 250 8.5 4.7 181 Marquette 8760 1.7 -M * 3.6 -M * Sylvan Road 7120 2.3 .8 288* 4.3 3.2 134 Younts Peak 8350 4.7 2.1 224 4.2 3.0 140 ----- ----- Basin Index (%) 251 161 POWDER RIVER Bear Trap Meadow 8200 1.4 .8 175 2.8 2.2 127 Cloud Peak Reservoir 9860 2.1 2.4 88 3.3 3.4 97 Grave Springs 8550 1.3 1.2 108 1.8 2.7 67 Hansen Sawmill 8360 1.4 .9 156 2.4 2.3 104 Middle Powder 7760 1.6 1.4 114 1.6 3.0 53 Powder River Pass 9480 4.2 1.7 247 3.8 2.7 141 Soldier Park 8720 1.0 -M * 2.7 -M * ----- ----- Basin Index (%) 143 96 TONGUE RIVER Big Goose 7990 .9 1.2 75 1.8 2.9 62 Bone Springs Div 9350 3.0 3.3 91 2.8 3.4 82 Burgess Junction 7880 1.1 1.7 65 2.0 3.0 67 Dome Lake 8880 2.3 2.4 96 2.8 3.4 82 Little Goose 8870 1.1 -M * 2.7 -M * Sucker Creek 8880 1.2 2.0 60 .9 3.4 26 Tie Creek 6870 .6 .3 200* 1.8 3.1 58 ----- ----- Basin Index (%) 83 63 BELLE FOURCHE Cole Canyon 5910 .8 .0 * 2.0 2.6 77 ----- ----- Basin Index (%) * 77 CHEYENNE RIVER BASIN Blind Park 6890 .8 1.0 80 2.6 3.3 79 North Rapid Creek 6130 .6 .8 75 1.6 2.9 55 ----- ----- Basin Index (%) 78 68 UPPER N. PLATTE Arapaho Ridge 10960 4.1 3.4 121 4.7 4.2 112 Blackhall Mtn 9820 4.9 -M * 5.4 -M * Columbine 9160 1.8 1.4 129* 4.9 3.8 129 Divide Peak 8880 1.4 2.2 64 4.4 4.2 105 Joe Wright 10120 2.4 3.6 67 7.3 4.8 152 Laprele Creek 8375 .4 1.0 40 1.8 2.7 67 Med Bow 10500 6.2 -M * 5.5 -M * North French Creek 10130 4.2 3.5 120 5.2 4.5 116 Never Summer 10280 4.6 2.8 164 4.8 -M * Old Battle 10000 4.4 3.8 116 4.3 5.7 75 Rawah 9020 1.9 .9 211* 4.7 3.1 152 Sage Creek Basin 7850 .7 1.0 70* 2.3 2.9 79 Sand Lake 10050 5.1 3.8 134 4.7 4.2 112 South Brush Creek 8440 1.8 1.0 180* 3.1 3.0 103 Tower 10500 4.8 5.8 83 7.4 6.2 119 Webber Springs 9250 2.0 2.0 100* 3.8 4.3 88 Willow Creek Pass 9540 4.2 1.8 233 4.2 2.7 156 Zirkel 9340 2.3 1.7 135* 6.2 5.0 124 ----- ----- Basin Index (%) 116 113 SWEETWATER Deer Park 9700 2.3 2.3 100 2.7 3.8 71 Larsen Creek 9000 .6 .7 86* 1.9 -M * South Pass 9040 1.6 1.9 84 1.4 3.2 44 ----- ----- Basin Index (%) 92 59 LOWER N. PLATTE Casper Mtn. 7900 .8 1.6 50 1.2 3.6 33 Laprele Creek 8375 .4 1.0 40 1.8 2.7 67 Reno Hill 8400 1.3 2.1 62 2.3 3.4 68 Windy Peak 7900 .7 .7 100* 1.8 2.3 78 ----- ----- Basin Index (%) 59 59 LARAMIE RIVER Brooklyn Lake 10240 2.0 2.0 100* 3.8 3.2 119 Cinnabar Park 9574 3.6 2.3 157 5.3 3.8 139 Crow Creek 8330 .7 .6 117* 3.1 2.4 129 Deadman Hill 10220 5.2 2.5 208 5.5 3.2 172 Rawah 9020 1.9 .9 211* 4.7 3.1 152 Roach 9700 3.2 1.9 168 5.0 3.3 152 ----- ----- Basin Index (%) 163 144 S. PLATTE Black Mountain 8920 1.9 -M * 3.8 -M * Crow Creek 8330 .7 .6 117* 3.1 2.4 129 Deadman Hill 10220 5.2 2.5 208 5.5 3.2 172 ----- ----- Basin Index (%) 190* 154 LITTLE SNAKE RIVER Battle Mountain 7440 .4 .2 200* 1.7 2.8 61 Divide Peak 8880 1.4 2.2 64 4.4 4.2 105 Elk River 8700 1.2 .6 200* 3.8 3.3 115 Little Snake River 8915 1.6 1.4 114* 10.1 5.5 184 Old Battle 10000 4.4 3.8 116 4.3 5.7 75 Sage Creek Basin 7850 .7 1.0 70* 2.3 2.9 79 Sandstone RS 8150 1.0 .8 125* 2.2 3.2 69 Whiskey Park 8950 1.7 2.0 85* 4.4 4.1 107 ----- ----- Basin Index (%) 103* 105 UPPER GREEN RIVER Big Sandy Opening 9080 1.9 2.3 83 2.6 2.5 104 Blind Bull Sum 8650 5.4 2.4 225* 3.1 2.9 107 East Rim Divide 7930 1.4 .8 175* 2.2 1.9 116 Elkhart Park G.S. 9400 2.0 1.6 125 2.5 2.5 100 Gros Ventre Summit 8750 4.0 2.2 182 3.6 2.4 150 Gunsight Pass 9820 2.1 1.8 117 3.3 2.8 118 Kendall R.S. 7740 1.8 1.0 180* 2.4 2.2 109 Loomis Park 8240 2.4 1.4 171* 2.7 2.6 104 New Fork Lake 8340 1.4 1.1 127 1.4 2.0 70 Pocket Creek 9360 2.7 -M * 2.6 -M * Snider Basin 8060 .7 .7 100* 1.9 2.1 90 Spring Creek Divide 9000 3.4 2.3 148* 3.8 3.4 112 Triple Peak 8500 3.4 2.1 162* 4.9 3.5 140 ----- ----- Basin Index (%) 152* 112 LOWER GREEN RIVER Blacks Fork Jct 8869 .4 -M * 1.3 -M * Buck Pasture 9632 .7 -M * 1.8 -M * EF Blacks Fork GS 9360 .6 -M * 1.4 -M * Hams Fork 7840 .4 .7 57* 1.1 2.0 55 Hewinta 9500 .2 .5 40* 1.5 2.8 54 Hickerson Park 9122 1.3 .7 186* .9 2.6 35 Hole-in-Rock 9168 .8 .6 133* 1.2 2.5 48 Indian Creek 9425 2.5 2.9 86 2.4 3.3 73 Kelley R.S. 8180 1.2 1.1 109* 1.8 2.8 64 Spirit Lk 10235 1.0 -M * 1.2 -M * Steel Creek Park 10158 2.2 2.2 100 2.0 3.2 62 ----- ----- Basin Index (%) 99* 57 UPPER BEAR RIVER Bear River RS 8777 .5 -M * 1.3 -M * Bug Lake 7987 1.1 1.2 92* 2.4 3.1 77 Burts Miller Ranch 8000 .3 -M * .7 -M * Chalk Creek #1 9171 .7 2.4 29* 1.9 4.2 45 Hayden Fork 9130 .8 .9 89* 1.8 3.5 51 Kelley R.S. 8180 1.2 1.1 109* 1.8 2.8 64 Lily Lake 9133 .5 1.1 45* 1.4 3.2 44 Monte Cristo 8932 2.4 1.4 171* 2.7 3.9 69 Salt River Summit 7760 1.1 .6 183* 2.2 2.4 92 ----- ----- Basin Index (%) 90* 61 ----------------------------------------------------------------------------- -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.