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 28 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 6.2 3.5 177 8.0 5.7 140 Black Bear 8170 12.6 8.4 150 11.8 10.0 118 Blind Bull Sum 8650 10.8 4.6 235 7.0 5.3 132 Cottonwood Creek 7670 -M 3.8 * -M 6.4 * East Rim Divide 7930 3.1 1.8 172 3.9 3.2 122 Grand Targhee 9260 18.8 9.6 196 11.6 9.5 122 Granite Creek 6770 -M 2.3 * -M 5.0 * Grassy Lake 7265 7.2 6.2 116 10.5 9.2 114 Gros Ventre Summit 8750 6.8 3.5 194 6.1 4.0 152 Gunsight Pass 9820 5.6 3.1 181 6.1 4.0 152 Lewis Lake Divide 7850 9.6 6.8 141 12.0 9.2 130 Phillips Bench 8200 7.5 5.0 150 8.8 6.9 128 Salt River Summit 7760 1.6 1.8 89 3.7 4.1 90 Snake River Station 6920 4.4 3.1 142 7.6 6.2 123 Spring Creek Divide 9000 -M 4.8 * -M 6.0 * Thumb Divide 7980 6.3 3.0 210 7.5 5.1 147 Togwotee Pass 9580 12.4 6.6 188 11.7 6.8 172 Two Ocean Plateau 9240 -M 8.3 * -M 7.6 * Willow Creek 8380 8.0 5.2 154 11.1 9.0 123 Younts Peak 8350 -M 4.1 * -M 4.8 * ----- ----- Basin Index (%) 167 130 MADISON-GALLATIN Black Bear 8170 12.6 8.4 150 11.8 10.0 118 Canyon 7870 4.0 2.9 138 5.4 4.5 120 Madison Plateau 7750 7.4 4.8 154 8.3 6.8 122 West Yellowstone 6700 2.8 1.7 165 -M 4.0 * Whiskey Creek 6800 -M 2.9 * 5.3 5.5 96 ----- ----- Basin Index (%) 151 115 YELLOWSTONE Beartooth Lake 9360 12.2 5.7 214 10.5 5.2 202 Burnt Mtn 5880 .2 1.1 18 5.2 5.0 104 Canyon 7870 4.0 2.9 138 5.4 4.5 120 Cole Creek 7850 4.5 3.8 118 3.4 4.8 71 Evening Star 9200 13.4 6.9 194 13.9 7.8 178 Fisher Creek 9100 15.9 8.4 189 13.5 8.6 157 Northeast Entrance 7350 1.9 1.5 127 5.6 3.9 144 Parker Peak 9400 12.3 5.8 212 9.7 5.4 180 Sylvan Lake 8420 8.9 4.9 182 9.1 6.8 134 Thumb Divide 7980 6.3 3.0 210 7.5 5.1 147 Two Ocean Plateau 9240 -M 8.3 * -M 7.6 * White Mill 8700 12.8 5.7 225 8.5 6.7 127 Wolverine 7650 2.9 1.8 161 6.3 3.9 162 ----- ----- Basin Index (%) 185 146 WIND RIVER Burroughs Creek 8750 5.2 -M * 5.8 -M * Castle Creek 8400 2.7 -M * 3.9 -M * Cold Springs 9630 3.2 2.3 139 3.4 3.5 97 Deer Park 9700 5.4 3.9 138 5.9 5.4 109 Hobbs Park 10100 7.7 4.3 179 6.2 4.3 144 Kirwin 9550 7.9 3.3 239 6.3 3.8 166 Little Warm 9370 7.3 2.7 270 6.6 4.0 165 Owl Creek 8975 1.3 1.5 87 3.0 2.1 143 South Pass 9040 4.3 3.7 116 3.7 5.1 73 St. Lawrence Alt 8620 1.8 2.0 90 3.9 3.1 126 Togwotee Pass 9580 12.4 6.6 188 11.7 6.8 172 Townsend Creek 8700 2.7 2.4 112 4.1 4.1 100 ----- ----- Basin Index (%) 165 130 BIGHORN BASIN Bald Mtn. 9380 6.4 5.6 114 4.0 5.0 80 Bear Trap Meadow 8200 2.5 1.4 179 3.7 3.0 123 Bone Springs Div 9350 4.5 4.9 92 3.8 4.7 81 Grave Springs 8550 1.7 1.7 100 1.8 3.6 50 Kirwin 9550 7.9 3.3 239 6.3 3.8 166 Marquette 8760 2.0 -M * 4.4 -M * Middle Powder 7760 2.2 2.8 79 1.8 4.3 42 Owl Creek 8975 1.3 1.5 87 3.0 2.1 143 Powder River Pass 9480 5.6 2.7 207 4.7 3.9 121 Shell Creek 9580 7.7 4.9 157 4.6 4.4 105 Timber Creek 7950 1.0 1.6 62 1.1 3.1 35 ----- ----- Basin Index (%) 134 92 SHOSHONE RIVER Blackwater 9780 13.8 6.8 203 11.0 6.2 177 Evening Star 9200 13.4 6.9 194 13.9 7.8 178 Marquette 8760 2.0 -M * 4.4 -M * Sylvan Road 7120 4.1 2.5 164 7.4 5.6 132 Younts Peak 8350 -M 4.1 * -M 4.8 * ----- ----- Basin Index (%) 193 165 POWDER RIVER Bear Trap Meadow 8200 2.5 1.4 179 3.7 3.0 123 Cloud Peak Reservoir 9860 3.7 3.7 100 4.7 4.6 102 Grave Springs 8550 1.7 1.7 100 1.8 3.6 50 Hansen Sawmill 8360 2.4 1.5 160 3.5 3.0 117 Middle Powder 7760 2.2 2.8 79 1.8 4.3 42 Powder River Pass 9480 5.6 2.7 207 4.7 3.9 121 Soldier Park 8720 1.2 -M * 3.4 -M * ----- ----- Basin Index (%) 131 90 TONGUE RIVER Big Goose 7990 1.4 2.2 64 2.1 3.9 54 Bone Springs Div 9350 4.5 4.9 92 3.8 4.7 81 Burgess Junction 7880 1.8 2.9 62 2.2 4.0 55 Dome Lake 8880 2.8 3.4 82 2.9 4.7 62 Little Goose 8870 1.8 -M * 3.6 -M * Sucker Creek 8880 2.2 3.2 69 -M 4.5 * Tie Creek 6870 .1 .7 14 2.5 4.0 62 ----- ----- Basin Index (%) 74 63 BELLE FOURCHE Cole Canyon 5910 .1 .7 14 2.0 3.4 59 ----- ----- Basin Index (%) 14 59 CHEYENNE RIVER BASIN Blind Park 6890 1.3 1.7 76 3.1 4.2 74 North Rapid Creek 6130 1.2 1.4 86 2.1 3.6 58 ----- ----- Basin Index (%) 81 67 UPPER N. PLATTE Arapaho Ridge 10960 5.3 5.5 96 5.8 6.4 91 Blackhall Mtn 9820 6.4 -M * 7.1 -M * Columbine 9160 2.6 4.3 60 7.0 6.4 109 Divide Peak 8880 2.6 4.1 63 5.9 6.3 94 Joe Wright 10120 4.2 5.6 75 9.4 7.6 124 Laprele Creek 8375 1.3 2.3 57 2.6 3.9 67 Med Bow 10500 9.3 -M * 8.2 -M * North French Creek 10130 6.6 6.4 103 7.5 7.2 104 Never Summer 10280 5.8 4.7 123 5.8 -M * Old Battle 10000 6.1 7.1 86 6.2 9.3 67 Rawah 9020 2.6 2.3 113 5.9 4.5 131 Sage Creek Basin 7850 1.5 2.1 71 3.2 4.4 73 Sand Lake 10050 7.7 6.8 113 6.8 6.8 100 South Brush Creek 8440 2.7 2.5 108 4.3 4.6 93 Tower 10500 7.1 10.8 66 9.3 10.7 87 Webber Springs 9250 3.5 4.4 80 5.8 7.1 82 Willow Creek Pass 9540 4.9 3.4 144 5.1 4.2 121 Zirkel 9340 4.0 4.3 93 8.6 7.7 112 ----- ----- Basin Index (%) 89 96 SWEETWATER Deer Park 9700 5.4 3.9 138 5.9 5.4 109 Larsen Creek 9000 1.6 2.3 70 3.7 -M * South Pass 9040 4.3 3.7 116 3.7 5.1 73 ----- ----- Basin Index (%) 114 91 LOWER N. PLATTE Casper Mtn. 7900 1.6 3.2 50 2.0 5.2 38 Laprele Creek 8375 1.3 2.3 57 2.6 3.9 67 Reno Hill 8400 2.6 3.3 79 3.5 4.7 74 Windy Peak 7900 .8 1.7 47 2.6 3.4 76 ----- ----- Basin Index (%) 60 62 LARAMIE RIVER Brooklyn Lake 10240 4.2 4.1 102 5.7 5.3 108 Cinnabar Park 9574 5.9 4.9 120 7.6 6.1 125 Crow Creek 8330 .0 1.6 0 4.0 3.4 118 Deadman Hill 10220 6.7 4.5 149 7.0 5.0 140 Rawah 9020 2.6 2.3 113 5.9 4.5 131 Roach 9700 4.4 3.7 119 6.4 5.3 121 ----- ----- Basin Index (%) 113 124 S. PLATTE Black Mountain 8920 3.0 -M * 5.2 -M * Crow Creek 8330 .0 1.6 0 4.0 3.4 118 Deadman Hill 10220 6.7 4.5 149 7.0 5.0 140 ----- ----- Basin Index (%) 110 131 LITTLE SNAKE RIVER Battle Mountain 7440 .0 1.3 0 3.2 4.3 74 Divide Peak 8880 2.6 4.1 63 5.9 6.3 94 Elk River 8700 2.6 2.7 96 5.1 5.3 96 Little Snake River 8915 3.1 3.6 86 6.8 8.1 84 Old Battle 10000 6.1 7.1 86 6.2 9.3 67 Sage Creek Basin 7850 1.5 2.1 71 3.2 4.4 73 Sandstone RS 8150 .8 1.8 44 2.9 5.1 57 Whiskey Park 8950 3.3 4.4 75 6.2 6.9 90 ----- ----- Basin Index (%) 74 79 UPPER GREEN RIVER Big Sandy Opening 9080 3.7 3.5 106 4.3 3.8 113 Blind Bull Sum 8650 10.8 4.6 235 7.0 5.3 132 East Rim Divide 7930 3.1 1.8 172 3.9 3.2 122 Elkhart Park G.S. 9400 3.4 3.0 113 3.6 4.0 90 Gros Ventre Summit 8750 6.8 3.5 194 6.1 4.0 152 Gunsight Pass 9820 5.6 3.1 181 6.1 4.0 152 Kendall R.S. 7740 4.1 2.4 171 5.2 3.8 137 Loomis Park 8240 -M 2.9 * -M 4.5 * New Fork Lake 8340 3.0 2.1 143 2.4 3.2 75 Pocket Creek 9360 4.2 -M * 4.0 -M * Snider Basin 8060 2.3 2.6 88 4.3 3.7 116 Spring Creek Divide 9000 -M 4.8 * -M 6.0 * Triple Peak 8500 7.8 4.8 162 9.8 6.3 156 ----- ----- Basin Index (%) 161 128 LOWER GREEN RIVER Blacks Fork Jct 8869 -M -M * -M -M * Buck Pasture 9632 2.9 -M * 3.6 -M * EF Blacks Fork GS 9360 2.0 -M * 3.0 -M * Hams Fork 7840 1.3 2.0 65 3.0 3.2 94 Hewinta 9500 .9 1.8 50 3.1 4.3 72 Hickerson Park 9122 1.9 1.4 136 1.7 3.6 47 Hole-in-Rock 9168 1.6 1.6 100 2.0 3.4 59 Indian Creek 9425 5.9 5.3 111 4.9 5.5 89 Kelley R.S. 8180 3.0 2.8 107 3.9 4.6 85 Spirit Lk 10235 2.1 -M * 2.4 -M * Steel Creek Park 10158 3.9 3.7 105 3.9 5.0 78 ----- ----- Basin Index (%) 99 76 UPPER BEAR RIVER Bear River RS 8777 1.7 -M * 3.0 -M * Bug Lake 7987 3.3 3.3 100 5.3 5.1 104 Burts Miller Ranch 8000 .3 -M * 1.9 -M * Chalk Creek #1 9171 3.7 4.7 79 4.7 7.2 65 Hayden Fork 9130 2.5 2.8 89 3.9 5.9 66 Kelley R.S. 8180 3.0 2.8 107 3.9 4.6 85 Lily Lake 9133 2.0 2.6 77 3.1 5.2 60 Monte Cristo 8932 5.3 4.9 108 5.4 6.8 79 Salt River Summit 7760 1.6 1.8 89 3.7 4.1 90 ----- ----- Basin Index (%) 93 77 ----------------------------------------------------------------------------- -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.