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 6 , 2015 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 13.4 11.0 122 14.7 14.4 102 Black Bear 8170 21.9 24.0 91 22.2 25.6 87 Blind Bull Sum 8650 20.0 14.6 137 13.9 13.3 105 Cottonwood Creek 7670 17.7 13.6 130 20.5 16.4 125 East Rim Divide 7930 11.2 6.9 162 9.6 7.9 122 Grand Targhee 9260 30.8 24.3 127 24.8 21.5 115 Granite Creek 6770 -M 11.1 * -M 14.0 * Grassy Lake 7265 23.6 21.2 111 24.0 24.7 97 Gros Ventre Summit 8750 9.7 8.6 113 8.0 8.5 94 Gunsight Pass 9820 10.3 8.6 120 10.2 9.2 111 Lewis Lake Divide 7850 19.4 20.6 94 22.0 23.8 92 Phillips Bench 8200 18.9 16.2 117 20.3 18.7 109 Salt River Summit 7760 9.4 8.2 115 10.9 11.0 99 Snake River Station 6920 13.8 11.5 120 15.8 15.9 99 Spring Creek Divide 9000 20.5 15.2 135 19.8 15.9 125 Thumb Divide 7980 8.6 9.7 89 9.5 12.5 76 Togwotee Pass 9580 18.1 15.4 118 19.4 16.3 119 Two Ocean Plateau 9240 19.7 18.4 107 18.0 17.8 101 Willow Creek 8380 20.0 18.0 111 23.0 22.3 103 Younts Peak 8350 -M 10.0 * -M 10.8 * ----- ----- Basin Index (%) 115 104 MADISON-GALLATIN Black Bear 8170 21.9 24.0 91 22.2 25.6 87 Canyon 7870 9.2 8.5 108 10.1 11.1 91 Madison Plateau 7750 13.0 14.4 90 13.3 17.8 75 West Yellowstone 6700 6.7 7.1 94 8.0 10.0 80 Whiskey Creek 6800 8.7 9.8 89 10.3 13.6 76 ----- ----- Basin Index (%) 93 82 YELLOWSTONE Beartooth Lake 9360 16.6 14.4 115 15.9 13.2 120 Burnt Mtn 5880 3.5 2.6 135 8.0 8.2 98 Canyon 7870 9.2 8.5 108 10.1 11.1 91 Cole Creek 7850 7.0 8.7 80 8.1 7.9 103 Evening Star 9200 20.7 16.7 124 22.0 18.5 119 Fisher Creek 9100 23.7 21.4 111 21.7 21.4 101 Northeast Entrance 7350 9.0 6.6 136 11.5 8.6 134 Parker Peak 9400 17.6 13.4 131 16.8 11.7 144 Sylvan Lake 8420 12.9 13.4 96 15.5 15.3 101 Thumb Divide 7980 8.6 9.7 89 9.5 12.5 76 Two Ocean Plateau 9240 19.7 18.4 107 18.0 17.8 101 White Mill 8700 19.5 15.1 129 18.4 15.9 116 Wolverine 7650 10.5 7.2 146 10.8 8.4 129 ----- ----- Basin Index (%) 114 109 WIND RIVER Burroughs Creek 8750 10.9 8.7 125 12.7 10.8 118 Castle Creek 8400 6.4 -M * 6.4 -M * Cold Springs 9630 5.8 4.8 121 6.4 6.4 100 Deer Park 9700 6.7 9.5 71 9.2 12.7 72 Hobbs Park 10100 6.3 8.0 79 6.8 8.0 85 Kirwin 9550 8.0 6.0 133 9.5 7.4 128 Little Warm 9370 7.5 6.6 114 8.7 8.4 104 Owl Creek 8975 3.2 3.1 103 4.9 3.6 136 South Pass 9040 7.0 9.7 72 7.1 11.3 63 St. Lawrence Alt 8620 2.6 4.2 62 3.9 5.5 71 Togwotee Pass 9580 18.1 15.4 118 19.4 16.3 119 Townsend Creek 8700 3.7 5.5 67 6.1 7.3 84 ----- ----- Basin Index (%) 98 97 BIGHORN BASIN Bald Mtn. 9380 11.4 11.1 103 9.0 11.0 82 Bear Trap Meadow 8200 5.4 3.6 150 4.9 5.3 92 Bone Springs Div 9350 9.6 9.9 97 8.3 9.9 84 Grave Springs 8550 5.2 5.0 104 4.4 6.7 66 Kirwin 9550 8.0 6.0 133 9.5 7.4 128 Marquette 8760 3.3 -M * 5.3 -M * Middle Powder 7760 6.8 6.6 103 5.7 7.6 75 Owl Creek 8975 3.2 3.1 103 4.9 3.6 136 Powder River Pass 9480 7.8 6.8 115 8.6 8.1 106 Shell Creek 9580 8.9 9.3 96 8.5 9.2 92 Timber Creek 7950 3.6 3.1 116 5.2 4.6 113 ----- ----- Basin Index (%) 108 94 SHOSHONE RIVER Blackwater 9780 15.2 15.0 101 15.4 13.6 113 Evening Star 9200 20.7 16.7 124 22.0 18.5 119 Marquette 8760 3.3 -M * 5.3 -M * Sylvan Road 7120 9.8 7.9 124 12.9 12.2 106 Younts Peak 8350 -M 10.0 * -M 10.8 * ----- ----- Basin Index (%) 115 114 POWDER RIVER Bear Trap Meadow 8200 5.4 3.6 150 4.9 5.3 92 Cloud Peak Reservoir 9860 9.5 8.6 110 8.7 8.2 106 Grave Springs 8550 5.2 5.0 104 4.4 6.7 66 Hansen Sawmill 8360 5.2 4.0 130 6.0 5.2 115 Middle Powder 7760 6.8 6.6 103 5.7 7.6 75 Powder River Pass 9480 7.8 6.8 115 8.6 8.1 106 Soldier Park 8720 4.6 -M * 5.8 -M * ----- ----- Basin Index (%) 115 93 TONGUE RIVER Big Goose 7990 5.3 5.0 106 5.8 6.7 87 Bone Springs Div 9350 9.6 9.9 97 8.3 9.9 84 Burgess Junction 7880 6.7 6.9 97 6.8 7.7 88 Dome Lake 8880 7.5 7.1 106 6.9 8.6 80 Little Goose 8870 5.6 -M * 7.1 -M * Sucker Creek 8880 7.4 7.4 100 7.8 9.0 87 Tie Creek 6870 3.7 3.5 106 6.5 7.3 89 ----- ----- Basin Index (%) 101 86 BELLE FOURCHE Cole Canyon 5910 3.4 3.5 97 5.7 5.9 97 ----- ----- Basin Index (%) 97 97 CHEYENNE RIVER BASIN Blind Park 6890 4.7 5.0 94 6.5 8.0 81 North Rapid Creek 6130 5.1 4.5 113 7.2 6.5 111 ----- ----- Basin Index (%) 103 94 UPPER N. PLATTE Arapaho Ridge 10960 11.6 13.7 85 12.9 14.8 87 Blackhall Mtn 9820 15.4 -M * 18.3 -M * Columbine 9160 14.5 15.3 95 16.0 16.9 95 Divide Peak 8880 5.6 13.0 43 9.1 14.2 64 Joe Wright 10120 11.8 13.3 89 18.4 16.6 111 Laprele Creek 8375 5.0 5.6 89 5.3 7.8 68 Med Bow 10500 22.3 -M * 20.8 -M * North French Creek 10130 17.2 16.6 104 17.4 17.4 100 Never Summer 10280 10.8 13.0 83 11.0 -M * Old Battle 10000 15.6 19.9 78 16.4 23.2 71 Rawah 9020 7.5 6.6 114 10.7 9.4 114 Sage Creek Basin 7850 5.5 8.8 62 5.1 10.2 50 Sand Lake 10050 16.0 17.1 94 14.9 15.6 96 South Brush Creek 8440 6.2 7.6 82 7.1 9.8 72 Tower 10500 23.6 28.8 82 25.3 26.4 96 Webber Springs 9250 11.6 14.8 78 12.9 17.6 73 Willow Creek Pass 9540 5.7 8.0 71 7.8 8.6 91 Zirkel 9340 -M 19.2 * -M 19.7 * ----- ----- Basin Index (%) 83 86 SWEETWATER Deer Park 9700 6.7 9.5 71 9.2 12.7 72 Larsen Creek 9000 5.6 7.7 73 7.6 -M * South Pass 9040 7.0 9.7 72 7.1 11.3 63 ----- ----- Basin Index (%) 72 68 LOWER N. PLATTE Casper Mtn. 7900 -M 7.9 * -M 9.4 * Laprele Creek 8375 5.0 5.6 89 5.3 7.8 68 Reno Hill 8400 6.6 8.0 82 7.9 9.3 85 Windy Peak 7900 4.6 4.3 107 4.6 6.5 71 ----- ----- Basin Index (%) 91 75 LARAMIE RIVER Brooklyn Lake 10240 14.8 12.2 121 15.2 13.3 114 Cinnabar Park 9574 11.9 13.7 87 16.2 16.7 97 Crow Creek 8330 3.9 5.7 68 6.2 6.5 95 Deadman Hill 10220 10.6 10.5 101 10.8 10.6 102 Rawah 9020 7.5 6.6 114 10.7 9.4 114 Roach 9700 7.8 10.4 75 10.5 12.2 86 ----- ----- Basin Index (%) 96 101 S. PLATTE Black Mountain 8920 6.0 -M * 8.0 -M * Crow Creek 8330 3.9 5.7 68 6.2 6.5 95 Deadman Hill 10220 10.6 10.5 101 10.8 10.6 102 ----- ----- Basin Index (%) 90 99 LITTLE SNAKE RIVER Battle Mountain 7440 5.5 7.3 75 7.7 10.0 77 Divide Peak 8880 5.6 13.0 43 9.1 14.2 64 Elk River 8700 10.1 12.0 84 10.8 13.2 82 Little Snake River 8915 15.3 16.3 94 19.5 21.5 91 Old Battle 10000 15.6 19.9 78 16.4 23.2 71 Sage Creek Basin 7850 5.5 8.8 62 5.1 10.2 50 Sandstone RS 8150 5.7 8.4 68 -M 12.4 * Whiskey Park 8950 17.4 16.9 103 18.2 18.5 98 ----- ----- Basin Index (%) 79 78 UPPER GREEN RIVER Big Sandy Opening 9080 8.0 8.5 94 7.3 8.6 85 Blind Bull Sum 8650 20.0 14.6 137 13.9 13.3 105 East Rim Divide 7930 11.2 6.9 162 9.6 7.9 122 Elkhart Park G.S. 9400 8.7 7.8 112 9.2 8.8 105 Gros Ventre Summit 8750 9.7 8.6 113 8.0 8.5 94 Gunsight Pass 9820 10.3 8.6 120 10.2 9.2 111 Kendall R.S. 7740 10.6 7.9 134 10.3 9.5 108 Loomis Park 8240 12.9 9.9 130 13.2 11.6 114 New Fork Lake 8340 9.4 6.8 138 9.2 7.3 126 Pocket Creek 9360 6.2 -M * 4.9 -M * Snider Basin 8060 11.5 8.0 144 12.6 9.5 133 Spring Creek Divide 9000 20.5 15.2 135 19.8 15.9 125 Triple Peak 8500 20.2 13.6 149 21.6 16.6 130 ----- ----- Basin Index (%) 131 114 LOWER GREEN RIVER Blacks Fork Jct 8870 4.3 -M * 6.4 -M * Buck Pasture 9700 7.9 -M * 9.2 -M * EF Blacks Fork GS 9360 4.6 -M * 5.9 -M * Hams Fork 7840 8.4 7.5 112 7.3 7.5 97 Hewinta 9519 5.0 6.1 82 7.0 9.0 78 Hickerson Park 9145 4.4 4.0 110 5.0 6.3 79 Hole-in-Rock 9150 3.9 4.1 95 4.7 5.9 80 Indian Creek 9425 15.6 15.0 104 14.8 14.5 102 Kelley R.S. 8180 10.3 9.4 110 11.3 11.9 95 Spirit Lk 10235 4.8 -M * 7.1 -M * Steel Creek Park 10200 -M 9.1 * 8.2 10.3 80 ----- ----- Basin Index (%) 103 89 UPPER BEAR RIVER Bear River RS 8777 4.6 -M * 5.4 -M * Bug Lake 7950 10.5 11.7 90 9.8 12.8 77 Burts Miller Ranch 8000 3.6 -M * 2.7 -M * Chalk Creek #1 8993 10.4 13.6 76 10.7 16.2 66 Hayden Fork 9212 6.7 9.0 74 10.6 13.6 78 Kelley R.S. 8180 10.3 9.4 110 11.3 11.9 95 Lily Lake 9156 5.9 7.6 78 6.5 11.0 59 Monte Cristo 8960 14.8 16.3 91 13.8 16.8 82 Salt River Summit 7760 9.4 8.2 115 10.9 11.0 99 ----- ----- Basin Index (%) 90 79 ----------------------------------------------------------------------------- -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.