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 MONDAY: JANUARY 19 , 2015 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 11.8 9.8 120 12.9 12.4 104 Black Bear 8170 19.5 21.3 92 20.2 21.9 92 Blind Bull Sum 8650 17.3 12.5 138 12.4 11.6 107 Cottonwood Creek 7670 14.9 10.9 137 17.5 14.2 123 East Rim Divide 7930 9.7 5.9 164 8.5 6.9 123 Grand Targhee 9260 26.8 21.4 125 21.7 18.1 120 Granite Creek 6770 13.1 9.0 146 13.2 12.0 110 Grassy Lake 7265 20.0 17.2 116 20.7 21.2 98 Gros Ventre Summit 8750 8.9 7.6 117 7.2 7.4 97 Gunsight Pass 9820 8.5 7.6 112 8.5 8.0 106 Lewis Lake Divide 7850 17.2 17.0 101 19.9 20.7 96 Phillips Bench 8200 15.9 15.3 104 17.3 16.2 107 Salt River Summit 7760 7.7 6.6 117 9.4 9.5 99 Snake River Station 6920 12.2 9.3 131 14.5 13.7 106 Spring Creek Divide 9000 17.6 12.5 141 17.3 13.8 125 Thumb Divide 7980 7.9 8.2 96 8.9 10.9 82 Togwotee Pass 9580 15.4 13.1 118 16.6 14.3 116 Two Ocean Plateau 9240 17.7 15.6 113 15.8 15.6 101 Willow Creek 8380 16.4 14.8 111 19.6 19.3 102 Younts Peak 8350 -M 8.7 * -M 9.5 * ----- ----- Basin Index (%) 118 105 MADISON-GALLATIN Black Bear 8170 19.5 21.3 92 20.2 21.9 92 Canyon 7870 8.4 7.4 114 9.2 9.5 97 Madison Plateau 7750 12.0 13.0 92 12.4 15.4 81 West Yellowstone 6700 6.1 6.5 94 7.4 8.5 87 Whiskey Creek 6800 7.9 8.6 92 9.6 11.9 81 ----- ----- Basin Index (%) 95 88 YELLOWSTONE Beartooth Lake 9360 15.0 12.6 119 14.4 11.5 125 Burnt Mtn 5880 4.4 2.3 191 7.4 7.4 100 Canyon 7870 8.4 7.4 114 9.2 9.5 97 Cole Creek 7850 6.4 7.4 86 4.9 7.1 69 Evening Star 9200 18.3 14.3 128 19.4 16.2 120 Fisher Creek 9100 21.1 18.8 112 19.3 18.5 104 Northeast Entrance 7350 7.9 5.5 144 10.3 7.5 137 Parker Peak 9400 15.5 11.8 131 14.8 10.3 144 Sylvan Lake 8420 11.2 11.4 98 13.7 13.4 102 Thumb Divide 7980 7.9 8.2 96 8.9 10.9 82 Two Ocean Plateau 9240 17.7 15.6 113 15.8 15.6 101 White Mill 8700 17.5 13.2 133 16.6 13.9 119 Wolverine 7650 10.3 6.1 169 9.8 7.5 131 ----- ----- Basin Index (%) 120 110 WIND RIVER Burroughs Creek 8750 9.4 7.5 125 11.1 9.5 117 Castle Creek 8400 5.6 -M * 5.7 -M * Cold Springs 9630 5.0 4.2 119 5.4 5.8 93 Deer Park 9700 6.2 7.6 82 8.5 11.2 76 Hobbs Park 10100 5.9 7.4 80 6.3 7.2 88 Kirwin 9550 7.3 5.3 138 8.7 6.7 130 Little Warm 9370 6.4 5.7 112 7.4 7.4 100 Owl Creek 8975 2.8 3.0 93 4.6 3.3 139 South Pass 9040 6.4 8.0 80 6.8 9.9 69 St. Lawrence Alt 8620 2.3 3.6 64 3.5 4.9 71 Togwotee Pass 9580 15.4 13.1 118 16.6 14.3 116 Townsend Creek 8700 3.5 4.5 78 5.9 6.6 89 ----- ----- Basin Index (%) 101 98 BIGHORN BASIN Bald Mtn. 9380 10.0 10.0 100 8.1 9.7 84 Bear Trap Meadow 8200 4.4 3.0 147 4.3 4.7 91 Bone Springs Div 9350 8.3 8.9 93 7.4 8.7 85 Grave Springs 8550 3.9 4.5 87 3.5 5.9 59 Kirwin 9550 7.3 5.3 138 8.7 6.7 130 Marquette 8760 3.1 -M * 5.1 -M * Middle Powder 7760 5.7 6.0 95 -M 6.8 * Owl Creek 8975 2.8 3.0 93 4.6 3.3 139 Powder River Pass 9480 6.8 5.8 117 7.8 7.1 110 Shell Creek 9580 7.8 8.5 92 7.7 7.9 97 Timber Creek 7950 3.2 2.8 114 4.8 4.3 112 ----- ----- Basin Index (%) 104 98 SHOSHONE RIVER Blackwater 9780 13.8 13.0 106 13.7 12.0 114 Evening Star 9200 18.3 14.3 128 19.4 16.2 120 Marquette 8760 3.1 -M * 5.1 -M * Sylvan Road 7120 8.9 7.0 127 11.9 10.8 110 Younts Peak 8350 -M 8.7 * -M 9.5 * ----- ----- Basin Index (%) 120 115 POWDER RIVER Bear Trap Meadow 8200 4.4 3.0 147 4.3 4.7 91 Cloud Peak Reservoir 9860 7.4 7.5 99 7.4 7.3 101 Grave Springs 8550 3.9 4.5 87 3.5 5.9 59 Hansen Sawmill 8360 4.6 3.6 128 5.4 4.6 117 Middle Powder 7760 5.7 6.0 95 -M 6.8 * Powder River Pass 9480 6.8 5.8 117 7.8 7.1 110 Soldier Park 8720 4.0 -M * 5.0 -M * ----- ----- Basin Index (%) 108 96 TONGUE RIVER Big Goose 7990 4.6 4.4 105 5.3 6.0 88 Bone Springs Div 9350 8.3 8.9 93 7.4 8.7 85 Burgess Junction 7880 5.7 6.1 93 5.8 6.9 84 Dome Lake 8880 6.0 6.3 95 6.1 7.7 79 Little Goose 8870 4.8 -M * 6.2 -M * Sucker Creek 8880 6.2 6.5 95 6.9 7.9 87 Tie Creek 6870 3.4 2.9 117 5.7 6.6 86 ----- ----- Basin Index (%) 97 85 BELLE FOURCHE Cole Canyon 5910 3.0 2.9 103 5.1 5.3 96 ----- ----- Basin Index (%) 103 96 CHEYENNE RIVER BASIN Blind Park 6890 3.9 4.1 95 5.7 7.1 80 North Rapid Creek 6130 4.7 3.8 124 6.5 5.8 112 ----- ----- Basin Index (%) 109 95 UPPER N. PLATTE Arapaho Ridge 10960 9.5 11.2 85 10.9 12.9 84 Blackhall Mtn 9820 12.2 -M * 15.1 -M * Columbine 9160 11.4 12.7 90 13.3 14.5 92 Divide Peak 8880 5.1 10.8 47 8.1 12.4 65 Joe Wright 10120 9.3 11.7 79 15.3 14.4 106 Laprele Creek 8375 3.9 5.1 76 4.3 6.9 62 Med Bow 10500 17.6 -M * 16.8 -M * North French Creek 10130 13.9 14.3 97 14.1 15.0 94 Never Summer 10280 9.0 10.8 83 9.6 -M * Old Battle 10000 13.2 16.1 82 13.9 20.1 69 Rawah 9020 6.2 5.6 111 9.4 8.5 111 Sage Creek Basin 7850 5.1 7.4 69 4.8 8.8 55 Sand Lake 10050 12.8 14.7 87 11.9 13.6 88 South Brush Creek 8440 5.1 6.3 81 6.2 8.6 72 Tower 10500 18.4 23.6 78 20.5 22.7 90 Webber Springs 9250 9.4 12.1 78 10.9 15.2 72 Willow Creek Pass 9540 5.1 6.4 80 7.1 7.5 95 Zirkel 9340 -M 16.0 * -M 16.8 * ----- ----- Basin Index (%) 81 83 SWEETWATER Deer Park 9700 6.2 7.6 82 8.5 11.2 76 Larsen Creek 9000 4.7 6.3 75 6.7 -M * South Pass 9040 6.4 8.0 80 6.8 9.9 69 ----- ----- Basin Index (%) 79 73 LOWER N. PLATTE Casper Mtn. 7900 -M 6.8 * -M 8.3 * Laprele Creek 8375 3.9 5.1 76 4.3 6.9 62 Reno Hill 8400 5.3 6.8 78 6.6 8.2 80 Windy Peak 7900 3.6 3.8 95 3.8 5.9 64 ----- ----- Basin Index (%) 82 70 LARAMIE RIVER Brooklyn Lake 10240 11.2 11.1 101 11.8 11.4 104 Cinnabar Park 9574 9.3 11.7 79 12.8 14.4 89 Crow Creek 8330 3.5 5.2 67 5.3 6.1 87 Deadman Hill 10220 8.5 8.5 100 8.9 9.3 96 Rawah 9020 6.2 5.6 111 9.4 8.5 111 Roach 9700 5.8 9.0 64 8.5 10.7 79 ----- ----- Basin Index (%) 87 94 S. PLATTE Black Mountain 8920 5.1 -M * 7.0 -M * Crow Creek 8330 3.5 5.2 67 5.3 6.1 87 Deadman Hill 10220 8.5 8.5 100 8.9 9.3 96 ----- ----- Basin Index (%) 88 92 LITTLE SNAKE RIVER Battle Mountain 7440 4.7 5.9 80 6.7 8.7 77 Divide Peak 8880 5.1 10.8 47 8.1 12.4 65 Elk River 8700 8.0 9.6 83 9.1 11.4 80 Little Snake River 8915 12.6 12.6 100 16.9 18.2 93 Old Battle 10000 13.2 16.1 82 13.9 20.1 69 Sage Creek Basin 7850 5.1 7.4 69 4.8 8.8 55 Sandstone RS 8150 5.0 7.1 70 6.5 10.7 61 Whiskey Park 8950 14.1 14.2 99 15.0 15.7 96 ----- ----- Basin Index (%) 81 76 UPPER GREEN RIVER Big Sandy Opening 9080 7.2 7.0 103 6.6 7.6 87 Blind Bull Sum 8650 17.3 12.5 138 12.4 11.6 107 East Rim Divide 7930 9.7 5.9 164 8.5 6.9 123 Elkhart Park G.S. 9400 7.6 6.7 113 8.2 7.7 106 Gros Ventre Summit 8750 8.9 7.6 117 7.2 7.4 97 Gunsight Pass 9820 8.5 7.6 112 8.5 8.0 106 Kendall R.S. 7740 8.9 6.7 133 9.0 8.2 110 Loomis Park 8240 11.5 8.2 140 11.8 10.1 117 New Fork Lake 8340 8.4 5.9 142 8.1 6.4 127 Pocket Creek 9360 6.0 -M * 4.7 -M * Snider Basin 8060 9.9 6.5 152 11.0 8.2 134 Spring Creek Divide 9000 17.6 12.5 141 17.3 13.8 125 Triple Peak 8500 17.4 11.6 150 18.8 14.2 132 ----- ----- Basin Index (%) 135 116 LOWER GREEN RIVER Blacks Fork Jct 8870 3.7 -M * 5.5 -M * Buck Pasture 9700 6.8 -M * 8.3 -M * EF Blacks Fork GS 9360 4.3 -M * 5.6 -M * Hams Fork 7840 6.9 6.1 113 6.3 6.6 95 Hewinta 9519 4.0 5.0 80 6.1 7.8 78 Hickerson Park 9145 4.0 3.2 125 4.7 5.7 82 Hole-in-Rock 9150 3.4 3.6 94 4.3 5.3 81 Indian Creek 9425 12.9 13.0 99 12.8 12.5 102 Kelley R.S. 8180 8.7 7.7 113 9.7 10.4 93 Spirit Lk 10235 4.7 -M * 6.6 -M * Steel Creek Park 10200 3.2 7.5 43 7.2 8.9 81 ----- ----- Basin Index (%) 93 89 UPPER BEAR RIVER Bear River RS 8777 3.8 -M * 4.8 -M * Bug Lake 7950 7.9 8.9 89 8.1 11.1 73 Burts Miller Ranch 8000 3.2 -M * 2.5 -M * Chalk Creek #1 8993 9.4 11.9 79 9.6 14.0 69 Hayden Fork 9212 5.4 7.5 72 9.1 11.7 78 Kelley R.S. 8180 8.7 7.7 113 9.7 10.4 93 Lily Lake 9156 5.2 6.6 79 5.9 9.6 61 Monte Cristo 8960 12.4 13.8 90 11.6 14.6 79 Salt River Summit 7760 7.7 6.6 117 9.4 9.5 99 ----- ----- Basin Index (%) 90 78 ----------------------------------------------------------------------------- -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.