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 30 , 2017 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 6.4 3.9 164 8.0 5.9 136 Black Bear 8170 12.5 8.8 142 11.9 10.4 114 Blind Bull Sum 8650 10.9 4.9 222 7.0 5.6 125 Cottonwood Creek 7670 4.6 4.2 110 6.3 6.8 93 East Rim Divide 7930 3.0 1.9 158 3.9 3.4 115 Grand Targhee 9260 19.1 9.8 195 11.5 9.7 119 Granite Creek 6770 -M 2.5 * -M 5.3 * Grassy Lake 7265 7.2 6.5 111 10.2 9.7 105 Gros Ventre Summit 8750 6.7 3.7 181 6.0 4.1 146 Gunsight Pass 9820 5.5 3.2 172 6.1 4.0 152 Lewis Lake Divide 7850 9.6 7.2 133 12.3 9.6 128 Phillips Bench 8200 7.1 5.5 129 8.9 7.3 122 Salt River Summit 7760 1.4 2.0 70 3.5 4.4 80 Snake River Station 6920 3.5 3.3 106 7.6 6.5 117 Spring Creek Divide 9000 6.7 5.0 134 7.4 6.4 116 Thumb Divide 7980 6.2 3.1 200 7.5 5.3 142 Togwotee Pass 9580 12.3 7.0 176 11.7 7.1 165 Two Ocean Plateau 9240 16.0 8.4 190 10.9 7.9 138 Willow Creek 8380 8.0 5.6 143 11.0 9.5 116 Younts Peak 8350 -M 4.3 * -M 4.9 * ----- ----- Basin Index (%) 156 123 MADISON-GALLATIN Black Bear 8170 12.5 8.8 142 11.9 10.4 114 Canyon 7870 4.1 3.0 137 5.5 4.7 117 Madison Plateau 7750 7.6 4.9 155 8.3 7.1 117 West Yellowstone 6700 2.7 1.8 150 5.2 4.2 124 Whiskey Creek 6800 3.7 3.1 119 5.4 5.7 95 ----- ----- Basin Index (%) 142 113 YELLOWSTONE Beartooth Lake 9360 12.4 6.0 207 10.5 5.4 194 Burnt Mtn 5880 .2 1.2 17 5.6 5.1 110 Canyon 7870 4.1 3.0 137 5.5 4.7 117 Cole Creek 7850 4.7 4.0 118 3.6 4.9 73 Evening Star 9200 13.5 7.1 190 14.0 8.2 171 Fisher Creek 9100 16.2 8.6 188 13.7 9.0 152 Northeast Entrance 7350 2.1 1.6 131 5.6 4.1 137 Parker Peak 9400 12.2 6.0 203 9.8 5.6 175 Sylvan Lake 8420 9.0 5.0 180 9.2 7.1 130 Thumb Divide 7980 6.2 3.1 200 7.5 5.3 142 Two Ocean Plateau 9240 16.0 8.4 190 10.9 7.9 138 White Mill 8700 13.0 5.9 220 8.6 7.0 123 Wolverine 7650 3.1 2.0 155 6.5 4.0 162 ----- ----- Basin Index (%) 182 142 WIND RIVER Burroughs Creek 8750 5.1 -M * 5.9 -M * Castle Creek 8400 2.4 -M * 3.8 -M * Cold Springs 9630 3.1 2.5 124 3.5 3.6 97 Deer Park 9700 5.4 4.1 132 5.8 5.5 105 Hobbs Park 10100 7.7 4.5 171 6.2 4.4 141 Kirwin 9550 7.7 3.4 226 6.3 3.9 162 Little Warm 9370 7.1 2.8 254 6.7 4.2 160 Owl Creek 8975 1.3 1.6 81 3.0 2.2 136 South Pass 9040 4.4 3.9 113 3.6 5.3 68 St. Lawrence Alt 8620 1.5 2.0 75 3.8 3.2 119 Togwotee Pass 9580 12.3 7.0 176 11.7 7.1 165 Townsend Creek 8700 2.7 2.4 112 3.9 4.2 93 ----- ----- Basin Index (%) 156 125 BIGHORN BASIN Bald Mtn. 9380 6.4 5.8 110 4.0 5.1 78 Bear Trap Meadow 8200 2.3 1.4 164 3.7 3.1 119 Bone Springs Div 9350 4.7 5.0 94 3.8 4.8 79 Grave Springs 8550 1.6 1.8 89 1.7 3.7 46 Kirwin 9550 7.7 3.4 226 6.3 3.9 162 Marquette 8760 2.0 -M * 4.4 -M * Middle Powder 7760 2.2 3.0 73 1.7 4.4 39 Owl Creek 8975 1.3 1.6 81 3.0 2.2 136 Powder River Pass 9480 5.6 2.9 193 4.6 4.0 115 Shell Creek 9580 7.6 5.0 152 4.7 4.6 102 Timber Creek 7950 .9 1.7 53 1.0 3.2 31 ----- ----- Basin Index (%) 128 88 SHOSHONE RIVER Blackwater 9780 13.9 7.1 196 11.1 6.4 173 Evening Star 9200 13.5 7.1 190 14.0 8.2 171 Marquette 8760 2.0 -M * 4.4 -M * Sylvan Road 7120 4.1 2.8 146 7.5 5.8 129 Younts Peak 8350 -M 4.3 * -M 4.9 * ----- ----- Basin Index (%) 185 160 POWDER RIVER Bear Trap Meadow 8200 2.3 1.4 164 3.7 3.1 119 Cloud Peak Reservoir 9860 3.8 3.8 100 4.6 4.7 98 Grave Springs 8550 1.6 1.8 89 1.7 3.7 46 Hansen Sawmill 8360 2.4 1.6 150 3.4 3.0 113 Middle Powder 7760 2.2 3.0 73 1.7 4.4 39 Powder River Pass 9480 5.6 2.9 193 4.6 4.0 115 Soldier Park 8720 1.0 -M * 3.3 -M * ----- ----- Basin Index (%) 123 86 TONGUE RIVER Big Goose 7990 1.4 2.4 58 2.2 4.0 55 Bone Springs Div 9350 4.7 5.0 94 3.8 4.8 79 Burgess Junction 7880 1.8 3.0 60 2.2 4.1 54 Dome Lake 8880 2.8 3.6 78 3.1 4.8 65 Little Goose 8870 1.8 -M * 3.7 -M * Sucker Creek 8880 2.2 3.2 69 -M 4.6 * Tie Creek 6870 .0 .8 0 2.7 4.1 66 ----- ----- Basin Index (%) 72 64 BELLE FOURCHE Cole Canyon 5910 .1 .7 14 2.0 3.5 57 ----- ----- Basin Index (%) 14 57 CHEYENNE RIVER BASIN Blind Park 6890 1.5 1.7 88 3.2 4.3 74 North Rapid Creek 6130 1.4 1.5 93 2.1 3.7 57 ----- ----- Basin Index (%) 91 66 UPPER N. PLATTE Arapaho Ridge 10960 5.2 5.7 91 5.7 6.7 85 Blackhall Mtn 9820 6.5 -M * 7.1 -M * Columbine 9160 2.5 4.6 54 6.7 6.9 97 Divide Peak 8880 2.6 4.4 59 5.9 6.6 89 Joe Wright 10120 4.1 5.8 71 9.5 7.9 120 Laprele Creek 8375 1.2 2.3 52 2.6 4.0 65 Med Bow 10500 9.1 -M * 8.1 -M * North French Creek 10130 6.6 6.8 97 7.4 7.5 99 Never Summer 10280 5.6 4.9 114 5.8 -M * Old Battle 10000 6.0 7.6 79 6.0 9.8 61 Rawah 9020 2.6 2.4 108 5.8 4.7 123 Sage Creek Basin 7850 1.7 2.2 77 3.2 4.5 71 Sand Lake 10050 7.6 7.2 106 6.6 7.1 93 South Brush Creek 8440 2.7 2.7 100 4.3 4.8 90 Tower 10500 7.0 11.4 61 9.2 11.3 81 Webber Springs 9250 3.5 4.8 73 5.8 7.5 77 Willow Creek Pass 9540 4.8 3.6 133 5.0 4.4 114 Zirkel 9340 3.9 4.6 85 8.5 7.9 108 ----- ----- Basin Index (%) 83 91 SWEETWATER Deer Park 9700 5.4 4.1 132 5.8 5.5 105 Larsen Creek 9000 1.6 2.4 67 3.7 -M * South Pass 9040 4.4 3.9 113 3.6 5.3 68 ----- ----- Basin Index (%) 110 87 LOWER N. PLATTE Casper Mtn. 7900 1.7 3.4 50 1.9 5.3 36 Laprele Creek 8375 1.2 2.3 52 2.6 4.0 65 Reno Hill 8400 2.6 3.5 74 3.5 4.9 71 Windy Peak 7900 .7 1.7 41 2.5 3.5 71 ----- ----- Basin Index (%) 57 59 LARAMIE RIVER Brooklyn Lake 10240 4.1 4.2 98 5.6 5.6 100 Cinnabar Park 9574 5.9 5.3 111 7.6 6.4 119 Crow Creek 8330 .0 1.8 0 4.0 3.5 114 Deadman Hill 10220 6.7 4.7 143 7.0 5.2 135 Rawah 9020 2.6 2.4 108 5.8 4.7 123 Roach 9700 4.4 3.9 113 6.4 5.6 114 ----- ----- Basin Index (%) 106 117 S. PLATTE Black Mountain 8920 3.0 -M * 5.2 -M * Crow Creek 8330 .0 1.8 0 4.0 3.5 114 Deadman Hill 10220 6.7 4.7 143 7.0 5.2 135 ----- ----- Basin Index (%) 103 126 LITTLE SNAKE RIVER Battle Mountain 7440 .0 1.5 0 2.5 4.5 56 Divide Peak 8880 2.6 4.4 59 5.9 6.6 89 Elk River 8700 2.7 3.0 90 5.1 5.6 91 Little Snake River 8915 3.0 3.7 81 6.8 8.4 81 Old Battle 10000 6.0 7.6 79 6.0 9.8 61 Sage Creek Basin 7850 1.7 2.2 77 3.2 4.5 71 Sandstone RS 8150 1.0 2.1 48 2.7 5.3 51 Whiskey Park 8950 3.3 4.6 72 6.2 7.2 86 ----- ----- Basin Index (%) 70 74 UPPER GREEN RIVER Big Sandy Opening 9080 3.6 3.6 100 4.1 4.0 102 Blind Bull Sum 8650 10.9 4.9 222 7.0 5.6 125 East Rim Divide 7930 3.0 1.9 158 3.9 3.4 115 Elkhart Park G.S. 9400 3.3 3.2 103 3.6 4.1 88 Gros Ventre Summit 8750 6.7 3.7 181 6.0 4.1 146 Gunsight Pass 9820 5.5 3.2 172 6.1 4.0 152 Kendall R.S. 7740 4.0 2.5 160 5.1 3.9 131 Loomis Park 8240 4.8 3.1 155 5.7 4.7 121 New Fork Lake 8340 2.9 2.2 132 2.3 3.3 70 Pocket Creek 9360 4.1 -M * 3.9 -M * Snider Basin 8060 2.5 2.8 89 4.3 3.8 113 Spring Creek Divide 9000 6.7 5.0 134 7.4 6.4 116 Triple Peak 8500 7.7 5.0 154 9.7 6.7 145 ----- ----- Basin Index (%) 150 121 LOWER GREEN RIVER Blacks Fork Jct 8869 1.8 -M * 2.7 -M * Buck Pasture 9632 2.8 -M * 3.7 -M * EF Blacks Fork GS 9360 1.8 -M * 3.0 -M * Hams Fork 7840 1.1 2.1 52 2.9 3.3 88 Hewinta 9500 1.1 1.9 58 3.0 4.5 67 Hickerson Park 9122 2.0 1.5 133 1.5 3.8 39 Hole-in-Rock 9168 1.4 1.6 88 2.0 3.5 57 Indian Creek 9425 5.9 5.6 105 4.8 5.8 83 Kelley R.S. 8180 2.9 2.9 100 3.8 4.9 78 Spirit Lk 10235 2.1 -M * 2.3 -M * Steel Creek Park 10158 4.0 3.9 103 3.8 5.2 73 ----- ----- Basin Index (%) 94 70 UPPER BEAR RIVER Bear River RS 8777 1.6 -M * 3.0 -M * Bug Lake 7987 3.4 3.5 97 5.3 5.4 98 Burts Miller Ranch 8000 .2 -M * 1.8 -M * Chalk Creek #1 9171 3.6 5.1 71 4.7 7.5 63 Hayden Fork 9130 2.4 3.0 80 3.9 6.2 63 Kelley R.S. 8180 2.9 2.9 100 3.8 4.9 78 Lily Lake 9133 1.3 2.8 46 3.1 5.4 57 Monte Cristo 8932 5.2 5.4 96 5.5 7.1 77 Salt River Summit 7760 1.4 2.0 70 3.5 4.4 80 ----- ----- Basin Index (%) 82 73 ----------------------------------------------------------------------------- -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.