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 24 , 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 2.8 214 7.6 5.0 152 Black Bear 8170 11.8 7.6 155 10.9 9.0 121 Blind Bull Sum 8650 10.3 4.1 251 6.8 4.7 145 Cottonwood Creek 7670 4.1 3.3 124 5.9 5.8 102 East Rim Divide 7930 3.1 1.5 207 3.8 2.9 131 Grand Targhee 9260 17.0 9.2 185 10.4 9.2 113 Granite Creek 6770 -M 1.8 * -M 4.4 * Grassy Lake 7265 7.0 5.2 135 9.7 8.2 118 Gros Ventre Summit 8750 6.5 3.2 203 5.8 3.5 166 Gunsight Pass 9820 5.2 2.7 193 5.8 3.6 161 Lewis Lake Divide 7850 9.1 5.8 157 11.6 8.3 140 Phillips Bench 8200 7.3 4.2 174 8.2 6.1 134 Salt River Summit 7760 1.9 1.5 127 3.6 3.7 97 Snake River Station 6920 4.3 2.3 187 7.4 5.5 135 Spring Creek Divide 9000 6.6 4.2 157 7.1 5.4 131 Thumb Divide 7980 5.7 2.5 228 6.8 4.7 145 Togwotee Pass 9580 11.1 5.8 191 10.5 6.1 172 Two Ocean Plateau 9240 15.4 7.6 203 10.2 6.9 148 Willow Creek 8380 6.8 4.4 155 9.7 8.0 121 Younts Peak 8350 -M 3.5 * -M 4.4 * ----- ----- Basin Index (%) 179 133 MADISON-GALLATIN Black Bear 8170 11.8 7.6 155 10.9 9.0 121 Canyon 7870 3.6 2.4 150 4.8 4.1 117 Madison Plateau 7750 6.7 4.2 160 7.3 6.1 120 West Yellowstone 6700 2.4 1.5 160 4.4 3.6 122 Whiskey Creek 6800 -M 2.5 * 4.8 4.9 98 ----- ----- Basin Index (%) 156 116 YELLOWSTONE Beartooth Lake 9360 11.9 5.4 220 10.2 4.7 217 Burnt Mtn 5880 -M .9 * 5.5 4.8 115 Canyon 7870 3.6 2.4 150 4.8 4.1 117 Cole Creek 7850 4.4 3.5 126 3.5 4.5 78 Evening Star 9200 12.8 6.2 206 13.1 7.1 185 Fisher Creek 9100 15.1 7.5 201 12.9 7.8 165 Northeast Entrance 7350 -M 1.3 * 5.1 3.6 142 Parker Peak 9400 11.6 5.2 223 9.1 4.9 186 Sylvan Lake 8420 8.3 4.4 189 8.5 6.2 137 Thumb Divide 7980 5.7 2.5 228 6.8 4.7 145 Two Ocean Plateau 9240 15.4 7.6 203 10.2 6.9 148 White Mill 8700 12.3 5.1 241 8.1 6.1 133 Wolverine 7650 3.3 1.4 236 6.1 3.5 174 ----- ----- Basin Index (%) 204 151 WIND RIVER Burroughs Creek 8750 4.7 -M * 5.7 -M * Castle Creek 8400 2.3 -M * 3.8 -M * Cold Springs 9630 2.8 2.0 140 3.6 3.2 112 Deer Park 9700 5.4 3.5 154 6.0 5.0 120 Hobbs Park 10100 7.6 4.0 190 6.2 3.9 159 Kirwin 9550 7.6 3.1 245 6.1 3.5 174 Little Warm 9370 7.1 2.4 296 6.4 3.7 173 Owl Creek 8975 1.2 1.5 80 2.8 2.0 140 South Pass 9040 4.4 3.3 133 3.7 4.6 80 St. Lawrence Alt 8620 1.8 1.8 100 3.7 2.9 128 Togwotee Pass 9580 11.1 5.8 191 10.5 6.1 172 Townsend Creek 8700 2.8 2.1 133 4.2 3.7 114 ----- ----- Basin Index (%) 176 138 BIGHORN BASIN Bald Mtn. 9380 6.0 5.1 118 4.0 4.6 87 Bear Trap Meadow 8200 2.1 1.2 175 3.3 2.8 118 Bone Springs Div 9350 4.2 4.6 91 3.9 4.4 89 Grave Springs 8550 1.7 1.5 113 1.9 3.3 58 Kirwin 9550 7.6 3.1 245 6.1 3.5 174 Marquette 8760 2.1 -M * 4.7 -M * Middle Powder 7760 2.0 2.3 87 2.0 4.0 50 Owl Creek 8975 1.2 1.5 80 2.8 2.0 140 Powder River Pass 9480 5.2 2.4 217 4.7 3.6 131 Shell Creek 9580 7.5 4.4 170 4.6 4.1 112 Timber Creek 7950 1.3 1.4 93 1.1 3.0 37 ----- ----- Basin Index (%) 141 97 SHOSHONE RIVER Blackwater 9780 13.5 6.1 221 10.6 5.7 186 Evening Star 9200 12.8 6.2 206 13.1 7.1 185 Marquette 8760 2.1 -M * 4.7 -M * Sylvan Road 7120 4.1 2.0 205 6.8 5.0 136 Younts Peak 8350 -M 3.5 * -M 4.4 * ----- ----- Basin Index (%) 213 171 POWDER RIVER Bear Trap Meadow 8200 2.1 1.2 175 3.3 2.8 118 Cloud Peak Reservoir 9860 3.5 3.5 100 4.6 4.3 107 Grave Springs 8550 1.7 1.5 113 1.9 3.3 58 Hansen Sawmill 8360 2.3 1.4 164 3.4 2.8 121 Middle Powder 7760 2.0 2.3 87 2.0 4.0 50 Powder River Pass 9480 5.2 2.4 217 4.7 3.6 131 Soldier Park 8720 1.4 -M * 3.4 -M * ----- ----- Basin Index (%) 137 96 TONGUE RIVER Big Goose 7990 1.5 2.0 75 2.3 3.7 62 Bone Springs Div 9350 4.2 4.6 91 3.9 4.4 89 Burgess Junction 7880 1.7 2.7 63 2.6 3.8 68 Dome Lake 8880 2.7 3.2 84 3.1 4.4 70 Little Goose 8870 1.8 -M * 3.5 -M * Sucker Creek 8880 2.0 3.0 67 1.4 4.3 33 Tie Creek 6870 .3 .6 50 2.5 3.9 64 ----- ----- Basin Index (%) 77 64 BELLE FOURCHE Cole Canyon 5910 .2 .6 33 2.1 3.2 66 ----- ----- Basin Index (%) 33 66 CHEYENNE RIVER BASIN Blind Park 6890 1.2 1.5 80 3.0 4.0 75 North Rapid Creek 6130 1.2 1.2 100 2.1 3.4 62 ----- ----- Basin Index (%) 89 69 UPPER N. PLATTE Arapaho Ridge 10960 5.2 5.1 102 5.7 6.0 95 Blackhall Mtn 9820 6.5 -M * 7.1 -M * Columbine 9160 3.1 3.8 82 7.3 5.8 126 Divide Peak 8880 2.9 3.8 76 5.8 5.8 100 Joe Wright 10120 4.3 5.1 84 9.3 7.0 133 Laprele Creek 8375 1.4 2.1 67 2.8 3.6 78 Med Bow 10500 9.2 -M * 8.2 -M * North French Creek 10130 6.6 5.5 120 7.4 6.5 114 Never Summer 10280 5.8 4.4 132 5.8 -M * Old Battle 10000 6.2 6.4 97 6.3 8.5 74 Rawah 9020 2.7 2.0 135 5.9 4.3 137 Sage Creek Basin 7850 1.6 1.9 84 3.3 3.9 85 Sand Lake 10050 7.9 6.0 132 6.7 6.2 108 South Brush Creek 8440 2.9 2.1 138 4.3 4.2 102 Tower 10500 7.1 9.7 73 9.5 9.7 98 Webber Springs 9250 3.6 4.0 90 5.8 6.5 89 Willow Creek Pass 9540 4.9 3.1 158 5.0 3.9 128 Zirkel 9340 4.2 3.6 117 8.6 7.2 119 ----- ----- Basin Index (%) 103 105 SWEETWATER Deer Park 9700 5.4 3.5 154 6.0 5.0 120 Larsen Creek 9000 2.0 1.9 105 3.7 -M * South Pass 9040 4.4 3.3 133 3.7 4.6 80 ----- ----- Basin Index (%) 136 101 LOWER N. PLATTE Casper Mtn. 7900 1.7 3.0 57 2.1 4.7 45 Laprele Creek 8375 1.4 2.1 67 2.8 3.6 78 Reno Hill 8400 2.7 2.9 93 3.7 4.4 84 Windy Peak 7900 1.1 1.5 73 2.8 3.2 88 ----- ----- Basin Index (%) 73 72 LARAMIE RIVER Brooklyn Lake 10240 4.2 4.1 102 5.7 5.0 114 Cinnabar Park 9574 5.9 4.2 140 7.7 5.6 138 Crow Creek 8330 .4 1.3 31 4.0 3.2 125 Deadman Hill 10220 6.8 4.0 170 7.0 4.7 149 Rawah 9020 2.7 2.0 135 5.9 4.3 137 Roach 9700 4.5 3.4 132 6.4 4.8 133 ----- ----- Basin Index (%) 129 133 S. PLATTE Black Mountain 8920 3.1 -M * 5.2 -M * Crow Creek 8330 .4 1.3 31 4.0 3.2 125 Deadman Hill 10220 6.8 4.0 170 7.0 4.7 149 ----- ----- Basin Index (%) 136 139 LITTLE SNAKE RIVER Battle Mountain 7440 .2 1.0 20* 3.2 4.0 80 Divide Peak 8880 2.9 3.8 76 5.8 5.8 100 Elk River 8700 2.7 2.4 112 5.1 4.9 104 Little Snake River 8915 3.3 3.2 103 6.9 7.3 95 Old Battle 10000 6.2 6.4 97 6.3 8.5 74 Sage Creek Basin 7850 1.6 1.9 84 3.3 3.9 85 Sandstone RS 8150 1.1 1.4 79 2.9 4.6 63 Whiskey Park 8950 3.3 4.0 82 6.1 6.2 98 ----- ----- Basin Index (%) 88 88 UPPER GREEN RIVER Big Sandy Opening 9080 3.6 3.2 112 4.2 3.5 120 Blind Bull Sum 8650 10.3 4.1 251 6.8 4.7 145 East Rim Divide 7930 3.1 1.5 207 3.8 2.9 131 Elkhart Park G.S. 9400 3.4 2.7 126 3.6 3.6 100 Gros Ventre Summit 8750 6.5 3.2 203 5.8 3.5 166 Gunsight Pass 9820 5.2 2.7 193 5.8 3.6 161 Kendall R.S. 7740 3.9 2.1 186 4.9 3.4 144 Loomis Park 8240 4.6 2.4 192 5.3 4.0 132 New Fork Lake 8340 2.8 1.9 147 2.4 2.9 83 Pocket Creek 9360 4.2 -M * 4.0 -M * Snider Basin 8060 2.6 2.1 124 4.2 3.3 127 Spring Creek Divide 9000 6.6 4.2 157 7.1 5.4 131 Triple Peak 8500 7.1 4.3 165 9.2 5.6 164 ----- ----- Basin Index (%) 174 136 LOWER GREEN RIVER Blacks Fork Jct 8869 -M -M * -M -M * Buck Pasture 9632 2.8 -M * 3.4 -M * EF Blacks Fork GS 9360 2.0 -M * 2.7 -M * Hams Fork 7840 1.4 1.8 78 2.9 2.9 100 Hewinta 9500 -M 1.5 * -M 4.0 * Hickerson Park 9122 2.0 1.3 154 1.7 3.4 50 Hole-in-Rock 9168 1.7 1.4 121 2.1 3.2 66 Indian Creek 9425 5.7 4.9 116 4.8 5.0 96 Kelley R.S. 8180 3.1 2.5 124 3.8 4.2 90 Spirit Lk 10235 2.1 -M * 2.3 -M * Steel Creek Park 10158 3.7 3.4 109 3.7 4.5 82 ----- ----- Basin Index (%) 115 82 UPPER BEAR RIVER Bear River RS 8777 1.5 -M * 2.8 -M * Bug Lake 7987 3.1 2.8 111 5.1 4.6 111 Burts Miller Ranch 8000 1.2 -M * 1.8 -M * Chalk Creek #1 9171 3.7 4.1 90 4.4 6.4 69 Hayden Fork 9130 2.3 2.4 96 3.7 5.3 70 Kelley R.S. 8180 3.1 2.5 124 3.8 4.2 90 Lily Lake 9133 1.9 2.4 79 2.8 4.7 60 Monte Cristo 8932 5.2 4.0 130 5.4 6.0 90 Salt River Summit 7760 1.9 1.5 127 3.6 3.7 97 ----- ----- Basin Index (%) 108 83 ----------------------------------------------------------------------------- -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.