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 TUESDAY: FEBRUARY 3 , 2015 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 12.6 10.9 116 13.8 14.3 97 Black Bear 8170 21.5 23.5 91 21.8 25.3 86 Blind Bull Sum 8650 18.3 14.1 130 13.0 13.1 99 Cottonwood Creek 7670 15.9 13.3 120 18.5 16.2 114 East Rim Divide 7930 10.2 6.9 148 8.8 7.8 113 Grand Targhee 9260 29.1 23.8 122 23.3 20.9 111 Granite Creek 6770 13.6 10.8 126 13.9 13.9 100 Grassy Lake 7265 22.1 20.7 107 22.6 24.4 93 Gros Ventre Summit 8750 9.1 8.5 107 7.4 8.4 88 Gunsight Pass 9820 9.1 8.4 108 9.1 9.0 101 Lewis Lake Divide 7850 18.4 20.2 91 20.9 23.6 89 Phillips Bench 8200 17.0 16.0 106 18.4 18.6 99 Salt River Summit 7760 8.3 8.0 104 10.0 10.8 93 Snake River Station 6920 13.0 11.1 117 15.1 15.8 96 Spring Creek Divide 9000 18.7 14.7 127 18.1 15.7 115 Thumb Divide 7980 8.3 9.6 86 9.2 12.4 74 Togwotee Pass 9580 16.5 15.2 109 17.8 16.1 111 Two Ocean Plateau 9240 18.7 18.0 104 16.9 17.6 96 Willow Creek 8380 17.6 17.5 101 20.7 22.0 94 Younts Peak 8350 -M 9.8 * -M 10.7 * ----- ----- Basin Index (%) 110 98 MADISON-GALLATIN Black Bear 8170 21.5 23.5 91 21.8 25.3 86 Canyon 7870 8.9 8.3 107 9.8 11.0 89 Madison Plateau 7750 12.8 14.1 91 13.1 17.6 74 West Yellowstone 6700 6.6 7.1 93 7.9 9.8 81 Whiskey Creek 6800 8.5 9.7 88 10.2 13.5 76 ----- ----- Basin Index (%) 93 81 YELLOWSTONE Beartooth Lake 9360 16.1 14.1 114 15.3 13.1 117 Burnt Mtn 5880 3.8 2.5 152 7.8 8.0 98 Canyon 7870 8.9 8.3 107 9.8 11.0 89 Cole Creek 7850 6.9 8.5 81 7.5 7.8 96 Evening Star 9200 19.7 16.6 119 20.8 18.3 114 Fisher Creek 9100 23.0 20.9 110 21.2 21.2 100 Northeast Entrance 7350 8.8 6.5 135 11.1 8.4 132 Parker Peak 9400 16.8 13.3 126 16.0 11.5 139 Sylvan Lake 8420 12.4 13.2 94 14.9 15.1 99 Thumb Divide 7980 8.3 9.6 86 9.2 12.4 74 Two Ocean Plateau 9240 18.7 18.0 104 16.9 17.6 96 White Mill 8700 19.0 14.9 128 17.9 15.7 114 Wolverine 7650 10.1 7.2 140 10.4 8.3 125 ----- ----- Basin Index (%) 112 106 WIND RIVER Burroughs Creek 8750 10.0 8.6 116 11.7 10.7 109 Castle Creek 8400 5.8 -M * 5.9 -M * Cold Springs 9630 5.1 4.7 109 5.9 6.3 94 Deer Park 9700 6.3 9.4 67 8.7 12.5 70 Hobbs Park 10100 6.0 8.0 75 6.7 7.9 85 Kirwin 9550 7.5 5.9 127 8.9 7.4 120 Little Warm 9370 6.8 6.5 105 8.0 8.3 96 Owl Creek 8975 2.9 3.1 94 4.7 3.6 131 South Pass 9040 6.5 9.3 70 7.0 11.2 62 St. Lawrence Alt 8620 2.3 4.2 55 3.7 5.4 69 Togwotee Pass 9580 16.5 15.2 109 17.8 16.1 111 Townsend Creek 8700 3.5 5.3 66 5.9 7.2 82 ----- ----- Basin Index (%) 92 92 BIGHORN BASIN Bald Mtn. 9380 11.1 10.9 102 8.7 10.9 80 Bear Trap Meadow 8200 4.8 3.5 137 4.5 5.2 87 Bone Springs Div 9350 9.3 9.9 94 8.1 9.8 83 Grave Springs 8550 4.7 4.9 96 4.0 6.6 61 Kirwin 9550 7.5 5.9 127 8.9 7.4 120 Marquette 8760 3.2 -M * 5.0 -M * Middle Powder 7760 6.6 6.4 103 5.6 7.5 75 Owl Creek 8975 2.9 3.1 94 4.7 3.6 131 Powder River Pass 9480 7.3 6.6 111 8.2 8.0 102 Shell Creek 9580 8.6 9.2 93 8.3 9.1 91 Timber Creek 7950 3.2 3.0 107 4.9 4.6 107 ----- ----- Basin Index (%) 104 91 SHOSHONE RIVER Blackwater 9780 14.4 14.9 97 14.3 13.4 107 Evening Star 9200 19.7 16.6 119 20.8 18.3 114 Marquette 8760 3.2 -M * 5.0 -M * Sylvan Road 7120 9.8 7.9 124 12.7 12.1 105 Younts Peak 8350 -M 9.8 * -M 10.7 * ----- ----- Basin Index (%) 111 109 POWDER RIVER Bear Trap Meadow 8200 4.8 3.5 137 4.5 5.2 87 Cloud Peak Reservoir 9860 8.8 8.5 104 8.5 8.0 106 Grave Springs 8550 4.7 4.9 96 4.0 6.6 61 Hansen Sawmill 8360 4.8 4.0 120 5.7 5.1 112 Middle Powder 7760 6.6 6.4 103 5.6 7.5 75 Powder River Pass 9480 7.3 6.6 111 8.2 8.0 102 Soldier Park 8720 4.3 -M * 5.4 -M * ----- ----- Basin Index (%) 109 90 TONGUE RIVER Big Goose 7990 5.0 4.9 102 5.6 6.6 85 Bone Springs Div 9350 9.3 9.9 94 8.1 9.8 83 Burgess Junction 7880 6.7 6.7 100 6.6 7.6 87 Dome Lake 8880 6.9 6.9 100 6.7 8.5 79 Little Goose 8870 5.4 -M * 6.8 -M * Sucker Creek 8880 7.2 7.2 100 7.6 8.8 86 Tie Creek 6870 3.6 3.4 106 6.4 7.2 89 ----- ----- Basin Index (%) 99 85 BELLE FOURCHE Cole Canyon 5910 3.0 3.3 91 5.5 5.7 96 ----- ----- Basin Index (%) 91 96 CHEYENNE RIVER BASIN Blind Park 6890 4.5 4.8 94 6.4 7.9 81 North Rapid Creek 6130 5.0 4.3 116 7.1 6.3 113 ----- ----- Basin Index (%) 104 95 UPPER N. PLATTE Arapaho Ridge 10960 10.2 13.4 76 11.6 14.4 81 Blackhall Mtn 9820 13.5 -M * 16.2 -M * Columbine 9160 12.6 14.9 85 14.2 16.6 86 Divide Peak 8880 5.1 12.5 41 8.5 13.9 61 Joe Wright 10120 10.3 13.1 79 16.4 16.3 101 Laprele Creek 8375 4.2 5.5 76 4.6 7.6 61 Med Bow 10500 20.6 -M * 19.4 -M * North French Creek 10130 16.2 16.2 100 16.5 17.1 96 Never Summer 10280 9.7 12.8 76 10.2 -M * Old Battle 10000 13.9 19.4 72 14.5 22.8 64 Rawah 9020 6.8 6.3 108 10.0 9.1 110 Sage Creek Basin 7850 5.4 8.6 63 5.0 10.0 50 Sand Lake 10050 14.5 16.7 87 13.5 15.4 88 South Brush Creek 8440 6.0 7.4 81 6.9 9.7 71 Tower 10500 19.9 28.0 71 22.0 25.8 85 Webber Springs 9250 10.0 14.1 71 11.5 17.3 66 Willow Creek Pass 9540 5.3 7.8 68 7.3 8.4 87 Zirkel 9340 -M 18.8 * -M 19.3 * ----- ----- Basin Index (%) 76 80 SWEETWATER Deer Park 9700 6.3 9.4 67 8.7 12.5 70 Larsen Creek 9000 4.8 7.5 64 6.7 -M * South Pass 9040 6.5 9.3 70 7.0 11.2 62 ----- ----- Basin Index (%) 67 66 LOWER N. PLATTE Casper Mtn. 7900 -M 7.6 * -M 9.1 * Laprele Creek 8375 4.2 5.5 76 4.6 7.6 61 Reno Hill 8400 6.0 7.8 77 7.2 9.0 80 Windy Peak 7900 3.7 4.2 88 3.9 6.4 61 ----- ----- Basin Index (%) 79 68 LARAMIE RIVER Brooklyn Lake 10240 12.8 12.0 107 13.4 13.1 102 Cinnabar Park 9574 11.0 13.4 82 15.1 16.3 93 Crow Creek 8330 3.2 5.7 56 5.6 6.4 88 Deadman Hill 10220 9.3 10.3 90 9.5 10.4 91 Rawah 9020 6.8 6.3 108 10.0 9.1 110 Roach 9700 6.8 10.1 67 9.5 12.0 79 ----- ----- Basin Index (%) 86 94 S. PLATTE Black Mountain 8920 5.6 -M * 7.6 -M * Crow Creek 8330 3.2 5.7 56 5.6 6.4 88 Deadman Hill 10220 9.3 10.3 90 9.5 10.4 91 ----- ----- Basin Index (%) 78 90 LITTLE SNAKE RIVER Battle Mountain 7440 5.0 7.2 69 7.1 9.8 72 Divide Peak 8880 5.1 12.5 41 8.5 13.9 61 Elk River 8700 9.0 11.6 78 9.7 13.0 75 Little Snake River 8915 13.3 15.9 84 17.8 21.1 84 Old Battle 10000 13.9 19.4 72 14.5 22.8 64 Sage Creek Basin 7850 5.4 8.6 63 5.0 10.0 50 Sandstone RS 8150 5.2 8.2 63 6.7 12.2 55 Whiskey Park 8950 15.1 16.4 92 16.0 18.2 88 ----- ----- Basin Index (%) 72 70 UPPER GREEN RIVER Big Sandy Opening 9080 7.3 8.4 87 6.8 8.5 80 Blind Bull Sum 8650 18.3 14.1 130 13.0 13.1 99 East Rim Divide 7930 10.2 6.9 148 8.8 7.8 113 Elkhart Park G.S. 9400 7.9 7.6 104 8.5 8.6 99 Gros Ventre Summit 8750 9.1 8.5 107 7.4 8.4 88 Gunsight Pass 9820 9.1 8.4 108 9.1 9.0 101 Kendall R.S. 7740 9.6 7.8 123 9.4 9.4 100 Loomis Park 8240 11.9 9.7 123 12.4 11.5 108 New Fork Lake 8340 8.7 6.8 128 8.4 7.2 117 Pocket Creek 9360 5.6 -M * 4.2 -M * Snider Basin 8060 10.5 7.7 136 11.4 9.4 121 Spring Creek Divide 9000 18.7 14.7 127 18.1 15.7 115 Triple Peak 8500 18.2 13.5 135 19.6 16.4 120 ----- ----- Basin Index (%) 122 106 LOWER GREEN RIVER Blacks Fork Jct 8870 3.8 -M * 5.7 -M * Buck Pasture 9700 7.0 -M * 8.5 -M * EF Blacks Fork GS 9360 4.1 -M * 5.4 -M * Hams Fork 7840 7.5 7.3 103 6.8 7.4 92 Hewinta 9519 3.7 5.9 63 6.3 8.8 72 Hickerson Park 9145 4.4 3.9 113 5.0 6.2 81 Hole-in-Rock 9150 3.7 4.1 90 4.6 5.8 79 Indian Creek 9425 14.2 14.7 97 13.7 14.3 96 Kelley R.S. 8180 9.4 9.2 102 10.4 11.8 88 Spirit Lk 10235 4.8 -M * 7.0 -M * Steel Creek Park 10200 -M 8.8 * 7.4 10.1 73 ----- ----- Basin Index (%) 95 84 UPPER BEAR RIVER Bear River RS 8777 4.1 -M * 5.1 -M * Bug Lake 7950 9.6 11.2 86 9.0 12.6 71 Burts Miller Ranch 8000 3.1 -M * 2.4 -M * Chalk Creek #1 8993 9.8 13.4 73 10.0 16.0 62 Hayden Fork 9212 5.7 8.8 65 9.6 13.4 72 Kelley R.S. 8180 9.4 9.2 102 10.4 11.8 88 Lily Lake 9156 5.6 7.5 75 6.2 10.9 57 Monte Cristo 8960 13.7 16.1 85 12.8 16.6 77 Salt River Summit 7760 8.3 8.0 104 10.0 10.8 93 ----- ----- Basin Index (%) 84 74 ----------------------------------------------------------------------------- -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.