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 SATURDAY: NOVEMBER 25 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 6.0 3.0 200 7.9 5.1 155 Black Bear 8170 11.8 7.8 151 10.9 9.3 117 Blind Bull Sum 8650 10.6 4.3 247 7.0 4.9 143 Cottonwood Creek 7670 -M 3.4 * -M 5.9 * East Rim Divide 7930 3.1 1.6 194 4.0 2.9 138 Grand Targhee 9260 17.8 9.3 191 11.0 9.4 117 Granite Creek 6770 -M 2.0 * -M 4.5 * Grassy Lake 7265 6.9 5.5 125 9.7 8.5 114 Gros Ventre Summit 8750 6.7 3.3 203 6.1 3.7 165 Gunsight Pass 9820 5.5 2.8 196 6.1 3.7 165 Lewis Lake Divide 7850 9.2 6.1 151 11.6 8.6 135 Phillips Bench 8200 7.5 4.4 170 8.6 6.3 137 Salt River Summit 7760 1.7 1.6 106 3.7 3.8 97 Snake River Station 6920 4.1 2.5 164 7.3 5.6 130 Spring Creek Divide 9000 6.8 4.4 155 7.3 5.5 133 Thumb Divide 7980 5.7 2.7 211 6.9 4.8 144 Togwotee Pass 9580 12.1 6.0 202 11.5 6.2 185 Two Ocean Plateau 9240 15.5 7.8 199 10.4 7.0 149 Willow Creek 8380 7.3 4.6 159 10.3 8.3 124 Younts Peak 8350 -M 3.7 * -M 4.5 * ----- ----- Basin Index (%) 178 135 MADISON-GALLATIN Black Bear 8170 11.8 7.8 151 10.9 9.3 117 Canyon 7870 3.6 2.5 144 4.8 4.3 112 Madison Plateau 7750 6.8 4.4 155 7.4 6.3 117 West Yellowstone 6700 2.4 1.6 150 4.4 3.7 119 Whiskey Creek 6800 -M 2.6 * 4.9 5.1 96 ----- ----- Basin Index (%) 151 113 YELLOWSTONE Beartooth Lake 9360 12.0 5.5 218 10.2 4.9 208 Burnt Mtn 5880 .9 1.0 90 5.1 4.9 104 Canyon 7870 3.6 2.5 144 4.8 4.3 112 Cole Creek 7850 4.5 3.5 129 3.4 4.6 74 Evening Star 9200 13.1 6.4 205 13.3 7.3 182 Fisher Creek 9100 15.1 7.8 194 13.0 8.0 162 Northeast Entrance 7350 1.8 1.4 129 5.2 3.6 144 Parker Peak 9400 11.7 5.4 217 9.0 5.0 180 Sylvan Lake 8420 8.3 4.5 184 8.6 6.4 134 Thumb Divide 7980 5.7 2.7 211 6.9 4.8 144 Two Ocean Plateau 9240 15.5 7.8 199 10.4 7.0 149 White Mill 8700 12.2 5.3 230 8.1 6.3 129 Wolverine 7650 2.8 1.5 187 6.2 3.6 172 ----- ----- Basin Index (%) 194 147 WIND RIVER Burroughs Creek 8750 5.2 -M * 5.9 -M * Castle Creek 8400 2.6 -M * 3.9 -M * Cold Springs 9630 3.0 2.0 150 3.5 3.3 106 Deer Park 9700 5.4 3.6 150 5.9 5.1 116 Hobbs Park 10100 7.6 4.1 185 6.0 4.0 150 Kirwin 9550 7.8 3.1 252 6.3 3.6 175 Little Warm 9370 7.3 2.5 292 6.5 3.7 176 Owl Creek 8975 1.3 1.5 87 2.9 2.1 138 South Pass 9040 4.3 3.4 126 3.7 4.7 79 St. Lawrence Alt 8620 1.7 1.8 94 3.8 2.9 131 Togwotee Pass 9580 12.1 6.0 202 11.5 6.2 185 Townsend Creek 8700 2.7 2.2 123 4.0 3.8 105 ----- ----- Basin Index (%) 176 137 BIGHORN BASIN Bald Mtn. 9380 6.2 5.2 119 3.9 4.7 83 Bear Trap Meadow 8200 2.1 1.3 162 3.3 2.9 114 Bone Springs Div 9350 4.2 4.7 89 3.8 4.4 86 Grave Springs 8550 1.7 1.6 106 1.8 3.3 55 Kirwin 9550 7.8 3.1 252 6.3 3.6 175 Marquette 8760 2.0 -M * 4.7 -M * Middle Powder 7760 2.1 2.4 88 1.8 4.0 45 Owl Creek 8975 1.3 1.5 87 2.9 2.1 138 Powder River Pass 9480 5.2 2.5 208 4.6 3.7 124 Shell Creek 9580 7.4 4.6 161 4.5 4.2 107 Timber Creek 7950 1.1 1.5 73 1.1 3.0 37 ----- ----- Basin Index (%) 138 95 SHOSHONE RIVER Blackwater 9780 13.5 6.3 214 10.6 5.8 183 Evening Star 9200 13.1 6.4 205 13.3 7.3 182 Marquette 8760 2.0 -M * 4.7 -M * Sylvan Road 7120 3.9 2.1 186 6.9 5.1 135 Younts Peak 8350 -M 3.7 * -M 4.5 * ----- ----- Basin Index (%) 206 169 POWDER RIVER Bear Trap Meadow 8200 2.1 1.3 162 3.3 2.9 114 Cloud Peak Reservoir 9860 3.4 3.6 94 4.5 4.3 105 Grave Springs 8550 1.7 1.6 106 1.8 3.3 55 Hansen Sawmill 8360 2.2 1.4 157 3.3 2.9 114 Middle Powder 7760 2.1 2.4 88 1.8 4.0 45 Powder River Pass 9480 5.2 2.5 208 4.6 3.7 124 Soldier Park 8720 1.3 -M * 3.3 -M * ----- ----- Basin Index (%) 130 91 TONGUE RIVER Big Goose 7990 1.4 2.1 67 2.1 3.8 55 Bone Springs Div 9350 4.2 4.7 89 3.8 4.4 86 Burgess Junction 7880 1.7 2.7 63 2.3 3.8 61 Dome Lake 8880 2.7 3.3 82 2.9 4.4 66 Little Goose 8870 1.7 -M * 3.5 -M * Sucker Creek 8880 2.1 3.0 70 -M 4.3 * Tie Creek 6870 .1 .6 17 2.5 3.9 64 ----- ----- Basin Index (%) 74 67 BELLE FOURCHE Cole Canyon 5910 .1 .7 14 2.0 3.2 62 ----- ----- Basin Index (%) 14 62 CHEYENNE RIVER BASIN Blind Park 6890 1.2 1.5 80 3.1 4.0 78 North Rapid Creek 6130 1.1 1.2 92 2.1 3.5 60 ----- ----- Basin Index (%) 85 69 UPPER N. PLATTE Arapaho Ridge 10960 5.3 5.2 102 5.8 6.1 95 Blackhall Mtn 9820 6.6 -M * 7.1 -M * Columbine 9160 2.8 4.0 70 7.1 6.0 118 Divide Peak 8880 2.8 3.9 72 5.9 5.9 100 Joe Wright 10120 4.3 5.2 83 9.4 7.1 132 Laprele Creek 8375 1.4 2.2 64 2.7 3.7 73 Med Bow 10500 9.2 -M * 8.2 -M * North French Creek 10130 6.6 5.7 116 7.4 6.6 112 Never Summer 10280 5.8 4.4 132 5.8 -M * Old Battle 10000 6.1 6.5 94 6.2 8.7 71 Rawah 9020 2.6 2.1 124 5.9 4.4 134 Sage Creek Basin 7850 1.6 1.9 84 3.2 3.9 82 Sand Lake 10050 7.8 6.2 126 6.8 6.4 106 South Brush Creek 8440 2.9 2.2 132 4.3 4.3 100 Tower 10500 7.2 10.0 72 9.4 9.9 95 Webber Springs 9250 3.6 4.0 90 5.8 6.7 87 Willow Creek Pass 9540 4.9 3.2 153 5.0 3.9 128 Zirkel 9340 4.1 3.7 111 8.5 7.3 116 ----- ----- Basin Index (%) 99 103 SWEETWATER Deer Park 9700 5.4 3.6 150 5.9 5.1 116 Larsen Creek 9000 1.9 2.0 95 3.8 -M * South Pass 9040 4.3 3.4 126 3.7 4.7 79 ----- ----- Basin Index (%) 129 98 LOWER N. PLATTE Casper Mtn. 7900 1.7 3.1 55 2.1 4.8 44 Laprele Creek 8375 1.4 2.2 64 2.7 3.7 73 Reno Hill 8400 2.7 3.0 90 3.6 4.4 82 Windy Peak 7900 1.1 1.6 69 2.6 3.2 81 ----- ----- Basin Index (%) 70 68 LARAMIE RIVER Brooklyn Lake 10240 4.2 4.1 102 5.6 5.0 112 Cinnabar Park 9574 5.9 4.4 134 7.7 5.7 135 Crow Creek 8330 .1 1.4 7 4.0 3.3 121 Deadman Hill 10220 6.7 4.1 163 7.0 4.7 149 Rawah 9020 2.6 2.1 124 5.9 4.4 134 Roach 9700 4.5 3.5 129 6.4 4.9 131 ----- ----- Basin Index (%) 122 131 S. PLATTE Black Mountain 8920 3.1 -M * 5.2 -M * Crow Creek 8330 .1 1.4 7 4.0 3.3 121 Deadman Hill 10220 6.7 4.1 163 7.0 4.7 149 ----- ----- Basin Index (%) 124 138 LITTLE SNAKE RIVER Battle Mountain 7440 .0 1.1 0* 3.0 4.1 73 Divide Peak 8880 2.8 3.9 72 5.9 5.9 100 Elk River 8700 2.8 2.4 117 5.2 4.9 106 Little Snake River 8915 3.3 3.3 100 6.9 7.3 95 Old Battle 10000 6.1 6.5 94 6.2 8.7 71 Sage Creek Basin 7850 1.6 1.9 84 3.2 3.9 82 Sandstone RS 8150 1.0 1.5 67 2.8 4.7 60 Whiskey Park 8950 3.4 4.1 83 6.2 6.3 98 ----- ----- Basin Index (%) 85 86 UPPER GREEN RIVER Big Sandy Opening 9080 3.7 3.3 112 4.3 3.6 119 Blind Bull Sum 8650 10.6 4.3 247 7.0 4.9 143 East Rim Divide 7930 3.1 1.6 194 4.0 2.9 138 Elkhart Park G.S. 9400 3.5 2.8 125 3.7 3.7 100 Gros Ventre Summit 8750 6.7 3.3 203 6.1 3.7 165 Gunsight Pass 9820 5.5 2.8 196 6.1 3.7 165 Kendall R.S. 7740 4.0 2.2 182 5.2 3.5 149 Loomis Park 8240 4.9 2.5 196 5.7 4.2 136 New Fork Lake 8340 3.0 1.9 158 2.4 3.0 80 Pocket Creek 9360 4.3 -M * 4.1 -M * Snider Basin 8060 2.5 2.2 114 4.3 3.4 126 Spring Creek Divide 9000 6.8 4.4 155 7.3 5.5 133 Triple Peak 8500 7.5 4.5 167 9.5 5.8 164 ----- ----- Basin Index (%) 173 137 LOWER GREEN RIVER Blacks Fork Jct 8869 1.8 -M * 2.6 -M * Buck Pasture 9632 2.8 -M * 3.4 -M * EF Blacks Fork GS 9360 1.9 -M * 2.9 -M * Hams Fork 7840 1.3 1.8 72 2.9 2.9 100 Hewinta 9500 .7 1.6 44 2.9 4.1 71 Hickerson Park 9122 1.9 1.3 146 1.6 3.4 47 Hole-in-Rock 9168 1.6 1.4 114 2.0 3.3 61 Indian Creek 9425 5.9 5.0 118 4.9 5.1 96 Kelley R.S. 8180 3.1 2.6 119 3.9 4.3 91 Spirit Lk 10235 2.0 -M * 2.3 -M * Steel Creek Park 10158 3.9 3.4 115 3.7 4.6 80 ----- ----- Basin Index (%) 108 79 UPPER BEAR RIVER Bear River RS 8777 1.6 -M * 2.8 -M * Bug Lake 7987 3.1 3.0 103 5.2 4.8 108 Burts Miller Ranch 8000 .8 -M * 1.8 -M * Chalk Creek #1 9171 3.6 4.3 84 4.5 6.6 68 Hayden Fork 9130 2.4 2.6 92 3.7 5.4 69 Kelley R.S. 8180 3.1 2.6 119 3.9 4.3 91 Lily Lake 9133 2.0 2.4 83 2.8 4.8 58 Monte Cristo 8932 5.2 4.1 127 5.3 6.3 84 Salt River Summit 7760 1.7 1.6 106 3.7 3.8 97 ----- ----- Basin Index (%) 102 81 ----------------------------------------------------------------------------- -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.