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: FEBRUARY 13 , 2015 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 14.1 12.2 116 15.2 15.1 101 Black Bear 8170 23.4 26.7 88 23.3 27.0 86 Blind Bull Sum 8650 20.8 15.5 134 14.4 14.0 103 Cottonwood Creek 7670 18.4 14.3 129 21.4 17.3 124 East Rim Divide 7930 11.3 7.1 159 9.9 8.3 119 Grand Targhee 9260 30.5 25.7 119 25.1 22.8 110 Granite Creek 6770 -M 11.9 * -M 14.7 * Grassy Lake 7265 24.3 23.2 105 24.5 26.1 94 Gros Ventre Summit 8750 10.0 8.8 114 8.2 8.8 93 Gunsight Pass 9820 10.7 9.1 118 10.5 9.8 107 Lewis Lake Divide 7850 20.9 22.6 92 22.9 25.2 91 Phillips Bench 8200 19.6 17.4 113 20.8 19.9 105 Salt River Summit 7760 9.8 8.9 110 11.4 11.6 98 Snake River Station 6920 14.3 12.7 113 16.2 16.8 96 Spring Creek Divide 9000 21.4 16.1 133 20.8 16.8 124 Thumb Divide 7980 9.3 10.3 90 9.9 13.1 76 Togwotee Pass 9580 18.7 16.1 116 20.1 17.2 117 Two Ocean Plateau 9240 21.1 19.2 110 19.1 19.1 100 Willow Creek 8380 20.9 18.7 112 23.7 23.5 101 Younts Peak 8350 -M 10.5 * -M 11.4 * ----- ----- Basin Index (%) 112 102 MADISON-GALLATIN Black Bear 8170 23.4 26.7 88 23.3 27.0 86 Canyon 7870 9.6 9.0 107 10.4 11.7 89 Madison Plateau 7750 13.9 15.4 90 14.0 18.7 75 West Yellowstone 6700 7.4 7.5 99 8.5 10.5 81 Whiskey Creek 6800 9.3 10.4 89 10.9 14.3 76 ----- ----- Basin Index (%) 92 82 YELLOWSTONE Beartooth Lake 9360 17.3 15.1 115 16.6 14.0 119 Burnt Mtn 5880 1.1 3.2 34 7.8 8.5 92 Canyon 7870 9.6 9.0 107 10.4 11.7 89 Cole Creek 7850 7.4 8.8 84 8.1 8.2 99 Evening Star 9200 21.8 17.1 127 22.9 19.7 116 Fisher Creek 9100 25.7 22.5 114 23.6 22.5 105 Northeast Entrance 7350 9.2 7.2 128 11.8 9.0 131 Parker Peak 9400 18.2 13.9 131 17.3 12.4 140 Sylvan Lake 8420 13.6 13.7 99 16.1 16.0 101 Thumb Divide 7980 9.3 10.3 90 9.9 13.1 76 Two Ocean Plateau 9240 21.1 19.2 110 19.1 19.1 100 White Mill 8700 20.9 16.0 131 19.9 16.8 118 Wolverine 7650 10.6 7.7 138 11.1 8.9 125 ----- ----- Basin Index (%) 114 108 WIND RIVER Burroughs Creek 8750 11.3 9.2 123 13.2 11.3 117 Castle Creek 8400 6.6 -M * 6.6 -M * Cold Springs 9630 5.8 4.9 118 6.2 6.6 94 Deer Park 9700 6.8 9.6 71 9.6 13.5 71 Hobbs Park 10100 6.5 8.3 78 7.1 8.3 86 Kirwin 9550 8.3 6.1 136 9.9 7.8 127 Little Warm 9370 7.7 7.0 110 9.0 8.8 102 Owl Creek 8975 3.3 3.2 103 5.0 3.8 132 South Pass 9040 7.3 9.9 74 7.4 11.8 63 St. Lawrence Alt 8620 2.5 4.4 57 3.8 5.7 67 Togwotee Pass 9580 18.7 16.1 116 20.1 17.2 117 Townsend Creek 8700 3.6 5.7 63 6.1 7.7 79 ----- ----- Basin Index (%) 97 95 BIGHORN BASIN Bald Mtn. 9380 11.7 12.3 95 9.2 11.6 79 Bear Trap Meadow 8200 5.3 3.7 143 4.9 5.5 89 Bone Springs Div 9350 9.9 10.5 94 8.6 10.4 83 Grave Springs 8550 5.2 5.4 96 4.3 7.0 61 Kirwin 9550 8.3 6.1 136 9.9 7.8 127 Marquette 8760 3.2 -M * 5.2 -M * Middle Powder 7760 6.8 6.9 99 5.8 7.9 73 Owl Creek 8975 3.3 3.2 103 5.0 3.8 132 Powder River Pass 9480 7.9 7.0 113 8.8 8.5 104 Shell Creek 9580 9.1 9.9 92 8.7 9.5 92 Timber Creek 7950 3.6 3.1 116 5.4 4.8 112 ----- ----- Basin Index (%) 104 92 SHOSHONE RIVER Blackwater 9780 16.1 15.3 105 16.8 14.3 117 Evening Star 9200 21.8 17.1 127 22.9 19.7 116 Marquette 8760 3.2 -M * 5.2 -M * Sylvan Road 7120 10.4 8.5 122 13.3 12.7 105 Younts Peak 8350 -M 10.5 * -M 11.4 * ----- ----- Basin Index (%) 118 113 POWDER RIVER Bear Trap Meadow 8200 5.3 3.7 143 4.9 5.5 89 Cloud Peak Reservoir 9860 9.7 9.3 104 8.8 8.5 104 Grave Springs 8550 5.2 5.4 96 4.3 7.0 61 Hansen Sawmill 8360 5.3 4.3 123 6.1 5.4 113 Middle Powder 7760 6.8 6.9 99 5.8 7.9 73 Powder River Pass 9480 7.9 7.0 113 8.8 8.5 104 Soldier Park 8720 4.6 -M * 5.8 -M * ----- ----- Basin Index (%) 110 90 TONGUE RIVER Big Goose 7990 5.3 5.5 96 5.8 7.1 82 Bone Springs Div 9350 9.9 10.5 94 8.6 10.4 83 Burgess Junction 7880 6.9 7.3 95 6.8 8.0 85 Dome Lake 8880 7.6 7.6 100 6.9 9.0 77 Little Goose 8870 5.5 -M * 7.2 -M * Sucker Creek 8880 7.6 7.7 99 7.9 9.4 84 Tie Creek 6870 3.3 3.7 89 6.6 7.6 87 ----- ----- Basin Index (%) 96 83 BELLE FOURCHE Cole Canyon 5910 2.5 4.2 60 5.6 6.5 86 ----- ----- Basin Index (%) 60 86 CHEYENNE RIVER BASIN Blind Park 6890 4.6 5.5 84 6.5 8.4 77 North Rapid Creek 6130 5.2 5.1 102 7.3 6.9 106 ----- ----- Basin Index (%) 92 90 UPPER N. PLATTE Arapaho Ridge 10960 12.0 14.4 83 13.3 15.5 86 Blackhall Mtn 9820 15.7 -M * 18.7 -M * Columbine 9160 14.6 16.7 87 16.1 18.0 89 Divide Peak 8880 5.2 13.8 38 9.2 15.0 61 Joe Wright 10120 11.7 13.9 84 18.7 17.5 107 Laprele Creek 8375 4.9 6.2 79 5.4 8.2 66 Med Bow 10500 22.7 -M * 21.0 -M * North French Creek 10130 17.3 18.3 95 17.4 18.5 94 Never Summer 10280 11.1 13.6 82 11.4 -M * Old Battle 10000 16.1 21.4 75 16.8 24.6 68 Rawah 9020 7.7 7.2 107 10.9 9.7 112 Sage Creek Basin 7850 5.6 9.2 61 -M 10.7 * Sand Lake 10050 16.1 18.0 89 15.0 16.5 91 South Brush Creek 8440 6.0 7.9 76 7.1 10.3 69 Tower 10500 23.8 31.4 76 26.0 28.0 93 Webber Springs 9250 11.9 16.0 74 13.3 18.5 72 Willow Creek Pass 9540 6.1 8.3 73 8.1 9.0 90 Zirkel 9340 19.8 20.1 99 21.9 20.8 105 ----- ----- Basin Index (%) 80 87 SWEETWATER Deer Park 9700 6.8 9.6 71 9.6 13.5 71 Larsen Creek 9000 5.9 8.2 72 7.7 -M * South Pass 9040 7.3 9.9 74 7.4 11.8 63 ----- ----- Basin Index (%) 72 67 LOWER N. PLATTE Casper Mtn. 7900 5.6 8.4 67 6.1 9.8 62 Laprele Creek 8375 4.9 6.2 79 5.4 8.2 66 Reno Hill 8400 6.6 8.4 79 7.9 9.8 81 Windy Peak 7900 4.5 4.8 94 4.7 6.9 68 ----- ----- Basin Index (%) 78 69 LARAMIE RIVER Brooklyn Lake 10240 14.5 13.3 109 15.4 14.0 110 Cinnabar Park 9574 12.2 15.0 81 16.3 17.6 93 Crow Creek 8330 3.3 6.0 55 6.2 6.9 90 Deadman Hill 10220 10.9 11.1 98 10.9 11.2 97 Rawah 9020 7.7 7.2 107 10.9 9.7 112 Roach 9700 7.8 11.1 70 10.6 12.9 82 ----- ----- Basin Index (%) 89 97 S. PLATTE Black Mountain 8920 6.0 -M * 8.0 -M * Crow Creek 8330 3.3 6.0 55 6.2 6.9 90 Deadman Hill 10220 10.9 11.1 98 10.9 11.2 97 ----- ----- Basin Index (%) 83 94 LITTLE SNAKE RIVER Battle Mountain 7440 6.0 8.1 74 7.8 10.6 74 Divide Peak 8880 5.2 13.8 38 9.2 15.0 61 Elk River 8700 10.6 13.1 81 11.0 14.0 79 Little Snake River 8915 16.1 17.7 91 20.2 22.7 89 Old Battle 10000 16.1 21.4 75 16.8 24.6 68 Sage Creek Basin 7850 5.6 9.2 61 -M 10.7 * Sandstone RS 8150 5.7 9.4 61 -M 13.2 * Whiskey Park 8950 18.0 18.2 99 18.5 19.8 93 ----- ----- Basin Index (%) 75 78 UPPER GREEN RIVER Big Sandy Opening 9080 8.3 8.8 94 7.7 9.0 86 Blind Bull Sum 8650 20.8 15.5 134 14.4 14.0 103 East Rim Divide 7930 11.3 7.1 159 9.9 8.3 119 Elkhart Park G.S. 9400 8.9 8.2 109 9.4 9.2 102 Gros Ventre Summit 8750 10.0 8.8 114 8.2 8.8 93 Gunsight Pass 9820 10.7 9.1 118 10.5 9.8 107 Kendall R.S. 7740 10.7 8.7 123 10.4 10.1 103 Loomis Park 8240 13.1 10.4 126 13.5 12.2 111 New Fork Lake 8340 9.6 7.3 132 9.3 7.6 122 Pocket Creek 9360 6.4 -M * 5.0 -M * Snider Basin 8060 11.7 8.7 134 13.0 10.0 130 Spring Creek Divide 9000 21.4 16.1 133 20.8 16.8 124 Triple Peak 8500 21.1 15.1 140 22.4 17.4 129 ----- ----- Basin Index (%) 127 112 LOWER GREEN RIVER Blacks Fork Jct 8870 4.7 -M * 6.8 -M * Buck Pasture 9700 8.6 -M * 10.0 -M * EF Blacks Fork GS 9360 5.3 -M * 6.4 -M * Hams Fork 7840 8.6 8.1 106 7.5 7.9 95 Hewinta 9519 5.8 6.7 87 7.3 9.5 77 Hickerson Park 9145 4.6 4.7 98 5.0 6.7 75 Hole-in-Rock 9150 4.0 4.5 89 4.9 6.2 79 Indian Creek 9425 16.4 16.1 102 15.3 15.4 99 Kelley R.S. 8180 10.6 10.0 106 11.6 12.6 92 Spirit Lk 10235 4.8 -M * 7.1 -M * Steel Creek Park 10200 -M 9.8 * 8.8 10.9 81 ----- ----- Basin Index (%) 100 87 UPPER BEAR RIVER Bear River RS 8777 5.2 -M * 5.7 -M * Bug Lake 7950 11.3 12.7 89 10.0 13.5 74 Burts Miller Ranch 8000 4.1 -M * 2.8 -M * Chalk Creek #1 8993 11.0 15.4 71 11.5 17.1 67 Hayden Fork 9212 7.2 10.1 71 11.2 14.4 78 Kelley R.S. 8180 10.6 10.0 106 11.6 12.6 92 Lily Lake 9156 6.4 8.5 75 7.1 11.7 61 Monte Cristo 8960 15.5 18.0 86 14.6 17.8 82 Salt River Summit 7760 9.8 8.9 110 11.4 11.6 98 ----- ----- Basin Index (%) 86 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.