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 WEDNESDAY: DECEMBER 30 , 2015 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 7.5 7.0 107 10.9 9.8 111 Black Bear 8170 15.4 17.2 90 18.2 17.4 105 Blind Bull Sum 8650 9.6 8.9 108 7.0 9.1 77 Cottonwood Creek 7670 7.2 8.2 88 9.1 10.9 83 East Rim Divide 7930 -M 4.2 * -M 5.4 * Grand Targhee 9260 17.3 17.3 100 14.0 14.6 96 Granite Creek 6770 6.2 6.2 100 8.8 9.2 96 Grassy Lake 7265 13.0 12.2 107 17.2 16.6 104 Gros Ventre Summit 8750 5.3 6.0 88 5.5 6.0 92 Gunsight Pass 9820 5.7 5.9 97 7.0 6.3 111 Lewis Lake Divide 7850 -M 12.9 * -M 16.5 * Phillips Bench 8200 8.9 10.6 84 12.6 12.5 101 Salt River Summit 7760 -M 4.7 * -M 7.3 * Snake River Station 6920 7.3 6.0 122 12.5 10.8 116 Spring Creek Divide 9000 8.8 9.7 91 8.8 10.5 84 Thumb Divide 7980 6.4 6.0 107 8.5 8.5 100 Togwotee Pass 9580 9.2 10.8 85 11.6 11.2 104 Two Ocean Plateau 9240 12.7 12.2 104 12.3 12.4 99 Willow Creek 8380 8.8 10.4 85 12.3 15.2 81 Younts Peak 8350 5.4 6.9 78 6.0 7.6 79 ----- ----- Basin Index (%) 96 97 MADISON-GALLATIN Black Bear 8170 15.4 17.2 90 18.2 17.4 105 Canyon 7870 5.6 5.2 108 7.7 7.7 100 Madison Plateau 7750 10.3 10.1 102 11.9 12.1 98 West Yellowstone 6700 5.8 4.5 129 7.9 6.9 114 Whiskey Creek 6800 -M 6.4 * -M 9.5 * ----- ----- Basin Index (%) 100 104 YELLOWSTONE Beartooth Lake 9360 8.5 9.7 88 9.2 9.0 102 Burnt Mtn 5880 2.1 1.9 111 6.6 6.7 99 Canyon 7870 5.6 5.2 108 7.7 7.7 100 Cole Creek 7850 3.7 6.3 59 4.4 6.3 70 Evening Star 9200 12.1 11.0 110 14.3 12.9 111 Fisher Creek 9100 14.3 14.3 100 13.3 14.7 90 Northeast Entrance 7350 3.7 3.8 97 6.5 6.0 108 Parker Peak 9400 9.3 9.6 97 10.9 8.3 131 Sylvan Lake 8420 7.9 9.0 88 11.9 10.9 109 Thumb Divide 7980 6.4 6.0 107 8.5 8.5 100 Two Ocean Plateau 9240 12.7 12.2 104 12.3 12.4 99 White Mill 8700 11.4 9.6 119 11.5 11.1 104 Wolverine 7650 6.2 4.6 135 7.1 6.1 116 ----- ----- Basin Index (%) 101 103 WIND RIVER Burroughs Creek 8750 5.5 -M * 6.8 -M * Castle Creek 8400 2.5 -M * 3.6 -M * Cold Springs 9630 3.1 3.1 100 3.9 4.9 80 Deer Park 9700 5.3 6.6 80 5.1 8.6 59 Hobbs Park 10100 4.6 6.4 72 4.6 6.1 75 Kirwin 9550 4.4 4.3 102 5.4 5.5 98 Little Warm 9370 4.1 4.4 93 5.8 6.1 95 Owl Creek 8975 1.4 2.5 56 2.0 2.8 71 South Pass 9040 4.1 6.5 63 3.6 8.1 44 St. Lawrence Alt 8620 1.0 3.0 33 2.6 4.2 62 Togwotee Pass 9580 9.2 10.8 85 11.6 11.2 104 Townsend Creek 8700 2.4 4.0 60 2.9 5.7 51 ----- ----- Basin Index (%) 77 75 BIGHORN BASIN Bald Mtn. 9380 3.4 8.2 41 4.0 7.8 51 Bear Trap Meadow 8200 2.1 2.5 84 2.5 4.2 60 Bone Springs Div 9350 4.3 7.2 60 4.1 7.0 59 Grave Springs 8550 1.8 3.2 56 2.0 5.0 40 Kirwin 9550 4.4 4.3 102 5.4 5.5 98 Marquette 8760 2.3 -M * 5.7 -M * Middle Powder 7760 2.8 4.8 58 -M 6.0 * Owl Creek 8975 1.4 2.5 56 2.0 2.8 71 Powder River Pass 9480 2.4 4.6 52 2.3 5.8 40 Shell Creek 9580 3.5 7.1 49 3.7 6.4 58 Timber Creek 7950 1.8 2.1 86 5.4 3.9 138 ----- ----- Basin Index (%) 60 65 SHOSHONE RIVER Blackwater 9780 10.7 10.4 103 12.4 9.7 128 Evening Star 9200 12.1 11.0 110 14.3 12.9 111 Marquette 8760 2.3 -M * 5.7 -M * Sylvan Road 7120 4.6 5.2 88 8.9 8.8 101 Younts Peak 8350 5.4 6.9 78 6.0 7.6 79 ----- ----- Basin Index (%) 98 107 POWDER RIVER Bear Trap Meadow 8200 2.1 2.5 84 2.5 4.2 60 Cloud Peak Reservoir 9860 2.9 6.1 48 -M 6.2 * Grave Springs 8550 1.8 3.2 56 2.0 5.0 40 Hansen Sawmill 8360 2.1 2.9 72 2.5 4.0 62 Middle Powder 7760 2.8 4.8 58 -M 6.0 * Powder River Pass 9480 2.4 4.6 52 2.3 5.8 40 Soldier Park 8720 .7 -M * 2.4 -M * ----- ----- Basin Index (%) 59 49 TONGUE RIVER Big Goose 7990 -M 3.6 * 2.4 5.2 46 Bone Springs Div 9350 4.3 7.2 60 4.1 7.0 59 Burgess Junction 7880 2.4 4.6 52 3.7 5.8 64 Dome Lake 8880 1.8 5.3 34 -M 6.6 * Little Goose 8870 2.2 -M * 3.1 -M * Sucker Creek 8880 2.6 5.0 52 -M 6.6 * Tie Creek 6870 .4 1.9 21 -M 5.5 * ----- ----- Basin Index (%) 48 57* BELLE FOURCHE Cole Canyon 5910 1.2 2.1 57 3.5 4.6 76 ----- ----- Basin Index (%) 57 76 CHEYENNE RIVER BASIN Blind Park 6890 1.5 3.2 47 3.0 6.0 50 North Rapid Creek 6130 2.5 3.1 81 2.6 5.0 52 ----- ----- Basin Index (%) 63 51 UPPER N. PLATTE Arapaho Ridge 10960 11.7 9.2 127 12.5 10.6 118 Blackhall Mtn 9820 12.7 -M * 13.5 -M * Columbine 9160 9.2 8.6 107 10.4 11.3 92 Divide Peak 8880 7.3 8.3 88 9.9 10.1 98 Joe Wright 10120 6.1 9.3 66 11.1 11.8 94 Laprele Creek 8375 2.7 3.9 69 4.1 5.9 69 Med Bow 10500 13.3 -M * 13.2 -M * North French Creek 10130 9.4 11.3 83 10.1 11.8 86 Never Summer 10280 8.3 8.5 98 8.3 -M * Old Battle 10000 11.7 12.3 95 11.2 16.0 70 Rawah 9020 5.8 4.2 138 8.8 7.2 122 Sage Creek Basin 7850 5.6 5.6 100 5.2 7.2 72 Sand Lake 10050 11.5 11.4 101 11.6 11.0 105 South Brush Creek 8440 3.7 4.6 80 5.0 7.0 71 Tower 10500 14.2 18.5 77 14.4 18.0 80 Webber Springs 9250 9.2 9.3 99 11.0 12.2 90 Willow Creek Pass 9540 7.5 5.4 139 7.8 6.4 122 Zirkel 9340 10.7 9.6 111 13.2 13.2 100 ----- ----- Basin Index (%) 96 92 SWEETWATER Deer Park 9700 5.3 6.6 80 5.1 8.6 59 Larsen Creek 9000 2.4 4.7 51 5.3 -M * South Pass 9040 4.1 6.5 63 3.6 8.1 44 ----- ----- Basin Index (%) 66 52 LOWER N. PLATTE Casper Mtn. 7900 4.2 5.7 74 5.0 7.3 68 Laprele Creek 8375 2.7 3.9 69 4.1 5.9 69 Reno Hill 8400 5.1 5.7 89 7.4 7.0 106 Windy Peak 7900 3.0 3.0 100 4.4 5.1 86 ----- ----- Basin Index (%) 82 83 LARAMIE RIVER Brooklyn Lake 10240 9.7 7.7 126 10.2 9.1 112 Cinnabar Park 9574 8.5 8.7 98 10.3 11.2 92 Crow Creek 8330 3.7 4.3 86 6.7 5.4 124 Deadman Hill 10220 8.8 7.1 124 9.2 7.6 121 Rawah 9020 5.8 4.2 138 8.8 7.2 122 Roach 9700 8.0 6.8 118 9.4 8.8 107 ----- ----- Basin Index (%) 115 111 S. PLATTE Black Mountain 8920 6.4 -M * 9.1 -M * Crow Creek 8330 3.7 4.3 86 6.7 5.4 124 Deadman Hill 10220 8.8 7.1 124 9.2 7.6 121 ----- ----- Basin Index (%) 110 122 LITTLE SNAKE RIVER Battle Mountain 7440 4.9 3.9 126 5.6 6.8 82 Divide Peak 8880 7.3 8.3 88 9.9 10.1 98 Elk River 8700 7.2 6.5 111 8.8 8.9 99 Little Snake River 8915 7.9 8.7 91 13.4 14.5 92 Old Battle 10000 11.7 12.3 95 11.2 16.0 70 Sage Creek Basin 7850 5.6 5.6 100 5.2 7.2 72 Sandstone RS 8150 4.7 4.2 112 4.8 8.3 58 Whiskey Park 8950 8.9 9.3 96 10.2 11.7 87 ----- ----- Basin Index (%) 99 83 UPPER GREEN RIVER Big Sandy Opening 9080 3.7 5.7 65 4.8 6.2 77 Blind Bull Sum 8650 9.6 8.9 108 7.0 9.1 77 East Rim Divide 7930 -M 4.2 * -M 5.4 * Elkhart Park G.S. 9400 4.0 5.6 71 6.4 6.3 102 Gros Ventre Summit 8750 5.3 6.0 88 5.5 6.0 92 Gunsight Pass 9820 5.7 5.9 97 7.0 6.3 111 Kendall R.S. 7740 -M 4.7 * 6.7 6.4 105 Loomis Park 8240 5.4 6.4 84 7.5 8.0 94 New Fork Lake 8340 4.4 4.4 100 5.9 5.0 118 Pocket Creek 9360 3.9 -M * 4.7 -M * Snider Basin 8060 5.1 5.0 102 5.0 6.4 78 Spring Creek Divide 9000 8.8 9.7 91 8.8 10.5 84 Triple Peak 8500 8.6 8.0 108 10.6 10.7 99 ----- ----- Basin Index (%) 92 93 LOWER GREEN RIVER Blacks Fork Jct 8870 5.6 -M * 6.0 -M * Buck Pasture 9700 -M -M * -M -M * EF Blacks Fork GS 9360 3.4 -M * 6.1 -M * Hams Fork 7840 4.4 4.4 100 3.7 5.0 74 Hewinta 9519 4.4 3.6 122 8.6 6.3 137 Hickerson Park 9145 3.8 2.8 136 4.9 4.9 100 Hole-in-Rock 9150 3.2 2.9 110 5.7 4.6 124 Indian Creek 9425 7.6 9.9 77 5.8 9.6 60 Kelley R.S. 8180 5.2 6.1 85 6.3 8.2 77 Spirit Lk 10235 5.3 -M * 7.8 -M * Steel Creek Park 10200 6.5 6.1 107 8.9 7.4 120 ----- ----- Basin Index (%) 98 95 UPPER BEAR RIVER Bear River RS 8777 4.2 -M * -M -M * Bug Lake 7950 7.6 6.2 123 8.0 8.8 91 Burts Miller Ranch 8000 2.6 -M * 2.8 -M * Chalk Creek #1 8993 8.6 9.6 90 9.3 11.3 82 Hayden Fork 9212 5.8 5.7 102 10.4 9.3 112 Kelley R.S. 8180 5.2 6.1 85 6.3 8.2 77 Lily Lake 9156 5.1 5.0 102 7.3 7.8 94 Monte Cristo 8960 10.1 9.8 103 11.6 11.4 102 Salt River Summit 7760 -M 4.7 * -M 7.3 * ----- ----- Basin Index (%) 100 93 ----------------------------------------------------------------------------- -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.