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 SUNDAY: FEBRUARY 1 , 2015 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 12.0 10.8 111 13.3 14.1 94 Black Bear 8170 20.5 23.3 88 21.1 25.0 84 Blind Bull Sum 8650 17.6 13.8 128 12.5 12.9 97 Cottonwood Creek 7670 15.3 12.9 119 18.0 15.9 113 East Rim Divide 7930 9.9 6.8 146 8.4 7.7 109 Grand Targhee 9260 27.6 23.6 117 22.1 20.7 107 Granite Creek 6770 -M 10.6 * -M 13.7 * Grassy Lake 7265 20.9 20.3 103 21.6 24.1 90 Gros Ventre Summit 8750 8.9 8.4 106 7.1 8.3 86 Gunsight Pass 9820 8.6 8.3 104 8.4 8.9 94 Lewis Lake Divide 7850 17.5 20.0 88 20.3 23.3 87 Phillips Bench 8200 16.0 16.0 100 17.5 18.3 96 Salt River Summit 7760 7.8 7.8 100 9.6 10.7 90 Snake River Station 6920 12.6 10.9 116 14.8 15.6 95 Spring Creek Divide 9000 17.9 14.4 124 17.6 15.4 114 Thumb Divide 7980 8.1 9.6 84 9.0 12.2 74 Togwotee Pass 9580 15.9 15.0 106 17.2 15.9 108 Two Ocean Plateau 9240 18.1 17.6 103 16.4 17.4 94 Willow Creek 8380 16.8 17.1 98 20.2 21.7 93 Younts Peak 8350 -M 9.6 * -M 10.5 * ----- ----- Basin Index (%) 106 95 MADISON-GALLATIN Black Bear 8170 20.5 23.3 88 21.1 25.0 84 Canyon 7870 8.8 8.2 107 9.7 10.8 90 Madison Plateau 7750 12.6 14.1 89 12.8 17.4 74 West Yellowstone 6700 6.2 7.0 89 7.7 9.7 79 Whiskey Creek 6800 8.3 9.6 86 9.9 13.3 74 ----- ----- Basin Index (%) 91 80 YELLOWSTONE Beartooth Lake 9360 15.7 13.9 113 14.9 12.9 116 Burnt Mtn 5880 3.3 2.4 138 7.7 7.8 99 Canyon 7870 8.8 8.2 107 9.7 10.8 90 Cole Creek 7850 7.0 8.4 83 7.1 7.6 93 Evening Star 9200 18.8 16.4 115 20.0 18.0 111 Fisher Creek 9100 22.2 20.6 108 20.5 20.9 98 Northeast Entrance 7350 8.5 6.4 133 10.8 8.3 130 Parker Peak 9400 16.3 13.0 125 15.6 11.4 137 Sylvan Lake 8420 12.1 13.0 93 14.5 15.0 97 Thumb Divide 7980 8.1 9.6 84 9.0 12.2 74 Two Ocean Plateau 9240 18.1 17.6 103 16.4 17.4 94 White Mill 8700 18.3 14.6 125 17.2 15.5 111 Wolverine 7650 9.7 7.1 137 9.8 8.2 120 ----- ----- Basin Index (%) 110 104 WIND RIVER Burroughs Creek 8750 9.5 8.4 113 11.0 10.5 105 Castle Creek 8400 5.8 -M * 5.5 -M * Cold Springs 9630 4.9 4.5 109 5.5 6.2 89 Deer Park 9700 6.3 9.4 67 8.5 12.3 69 Hobbs Park 10100 5.9 8.0 74 6.1 7.8 78 Kirwin 9550 7.3 5.9 124 8.6 7.2 119 Little Warm 9370 6.5 6.4 102 7.7 8.2 94 Owl Creek 8975 2.7 3.1 87 4.5 3.6 125 South Pass 9040 6.4 8.9 72 6.8 11.0 62 St. Lawrence Alt 8620 1.9 4.2 45 3.3 5.3 62 Togwotee Pass 9580 15.9 15.0 106 17.2 15.9 108 Townsend Creek 8700 3.2 5.2 62 5.5 7.1 77 ----- ----- Basin Index (%) 89 89 BIGHORN BASIN Bald Mtn. 9380 11.0 10.8 102 8.4 10.7 79 Bear Trap Meadow 8200 4.6 3.4 135 4.1 5.2 79 Bone Springs Div 9350 9.2 9.8 94 7.7 9.6 80 Grave Springs 8550 4.5 4.9 92 3.9 6.4 61 Kirwin 9550 7.3 5.9 124 8.6 7.2 119 Marquette 8760 2.9 -M * 4.7 -M * Middle Powder 7760 6.4 6.3 102 -M 7.4 * Owl Creek 8975 2.7 3.1 87 4.5 3.6 125 Powder River Pass 9480 7.3 6.5 112 8.1 7.9 103 Shell Creek 9580 8.5 9.1 93 8.3 9.0 92 Timber Creek 7950 3.3 2.9 114 4.9 4.5 109 ----- ----- Basin Index (%) 103 91 SHOSHONE RIVER Blackwater 9780 13.9 14.8 94 13.9 13.3 105 Evening Star 9200 18.8 16.4 115 20.0 18.0 111 Marquette 8760 2.9 -M * 4.7 -M * Sylvan Road 7120 9.5 7.8 122 12.3 11.9 103 Younts Peak 8350 -M 9.6 * -M 10.5 * ----- ----- Basin Index (%) 108 107 POWDER RIVER Bear Trap Meadow 8200 4.6 3.4 135 4.1 5.2 79 Cloud Peak Reservoir 9860 8.6 8.3 104 8.0 7.9 101 Grave Springs 8550 4.5 4.9 92 3.9 6.4 61 Hansen Sawmill 8360 4.5 4.0 112 5.4 5.1 106 Middle Powder 7760 6.4 6.3 102 -M 7.4 * Powder River Pass 9480 7.3 6.5 112 8.1 7.9 103 Soldier Park 8720 4.1 -M * 5.3 -M * ----- ----- Basin Index (%) 107 91 TONGUE RIVER Big Goose 7990 4.8 4.9 98 5.1 6.5 78 Bone Springs Div 9350 9.2 9.8 94 7.7 9.6 80 Burgess Junction 7880 6.5 6.6 98 6.0 7.5 80 Dome Lake 8880 6.6 6.8 97 6.4 8.4 76 Little Goose 8870 5.3 -M * 6.6 -M * Sucker Creek 8880 7.1 7.1 100 7.3 8.7 84 Tie Creek 6870 3.9 3.4 115 6.1 7.1 86 ----- ----- Basin Index (%) 99 81 BELLE FOURCHE Cole Canyon 5910 2.7 3.2 84 5.3 5.6 95 ----- ----- Basin Index (%) 84 95 CHEYENNE RIVER BASIN Blind Park 6890 4.5 4.6 98 6.3 7.7 82 North Rapid Creek 6130 5.0 4.3 116 6.7 6.2 108 ----- ----- Basin Index (%) 107 94 UPPER N. PLATTE Arapaho Ridge 10960 9.8 13.2 74 11.3 14.1 80 Blackhall Mtn 9820 12.7 -M * 15.6 -M * Columbine 9160 12.1 14.7 82 13.7 16.4 84 Divide Peak 8880 4.8 12.3 39 8.2 13.6 60 Joe Wright 10120 10.0 13.0 77 16.0 16.0 100 Laprele Creek 8375 4.0 5.4 74 4.6 7.5 61 Med Bow 10500 18.6 -M * 17.8 -M * North French Creek 10130 14.6 16.0 91 14.9 16.8 89 Never Summer 10280 9.5 12.6 75 10.0 -M * Old Battle 10000 13.5 19.1 71 13.9 22.4 62 Rawah 9020 6.7 6.2 108 9.8 9.0 109 Sage Creek Basin 7850 5.1 8.4 61 4.9 9.8 50 Sand Lake 10050 13.5 16.5 82 12.6 15.1 83 South Brush Creek 8440 5.4 7.3 74 6.4 9.5 67 Tower 10500 19.1 27.5 69 21.3 25.5 84 Webber Springs 9250 9.7 13.7 71 11.1 17.0 65 Willow Creek Pass 9540 5.2 7.6 68 7.2 8.3 87 Zirkel 9340 -M 18.5 * -M 19.0 * ----- ----- Basin Index (%) 74 78 SWEETWATER Deer Park 9700 6.3 9.4 67 8.5 12.3 69 Larsen Creek 9000 4.4 7.3 60 6.4 -M * South Pass 9040 6.4 8.9 72 6.8 11.0 62 ----- ----- Basin Index (%) 67 66 LOWER N. PLATTE Casper Mtn. 7900 -M 7.5 * -M 9.0 * Laprele Creek 8375 4.0 5.4 74 4.6 7.5 61 Reno Hill 8400 5.8 7.7 75 7.0 8.9 79 Windy Peak 7900 3.6 4.2 86 3.8 6.4 59 ----- ----- Basin Index (%) 77 68 LARAMIE RIVER Brooklyn Lake 10240 11.9 12.0 99 12.6 12.9 98 Cinnabar Park 9574 9.9 13.2 75 13.7 15.8 87 Crow Creek 8330 2.8 5.7 49 5.5 6.4 86 Deadman Hill 10220 8.8 10.1 87 9.2 10.2 90 Rawah 9020 6.7 6.2 108 9.8 9.0 109 Roach 9700 6.2 10.0 62 8.9 11.8 75 ----- ----- Basin Index (%) 81 90 S. PLATTE Black Mountain 8920 5.4 -M * 7.4 -M * Crow Creek 8330 2.8 5.7 49 5.5 6.4 86 Deadman Hill 10220 8.8 10.1 87 9.2 10.2 90 ----- ----- Basin Index (%) 73 89 LITTLE SNAKE RIVER Battle Mountain 7440 4.8 7.1 68 6.8 9.6 71 Divide Peak 8880 4.8 12.3 39 8.2 13.6 60 Elk River 8700 8.5 11.2 76 9.3 12.8 73 Little Snake River 8915 12.8 15.5 83 17.2 20.6 83 Old Battle 10000 13.5 19.1 71 13.9 22.4 62 Sage Creek Basin 7850 5.1 8.4 61 4.9 9.8 50 Sandstone RS 8150 4.8 8.0 60 -M 12.0 * Whiskey Park 8950 14.3 16.0 89 15.1 17.9 84 ----- ----- Basin Index (%) 70 71 UPPER GREEN RIVER Big Sandy Opening 9080 7.0 8.2 85 6.7 8.4 80 Blind Bull Sum 8650 17.6 13.8 128 12.5 12.9 97 East Rim Divide 7930 9.9 6.8 146 8.4 7.7 109 Elkhart Park G.S. 9400 7.5 7.5 100 8.3 8.5 98 Gros Ventre Summit 8750 8.9 8.4 106 7.1 8.3 86 Gunsight Pass 9820 8.6 8.3 104 8.4 8.9 94 Kendall R.S. 7740 9.2 7.8 118 8.9 9.3 96 Loomis Park 8240 11.5 9.5 121 12.2 11.3 108 New Fork Lake 8340 8.3 6.8 122 8.2 7.1 115 Pocket Creek 9360 5.3 -M * 4.1 -M * Snider Basin 8060 10.1 7.5 135 11.2 9.2 122 Spring Creek Divide 9000 17.9 14.4 124 17.6 15.4 114 Triple Peak 8500 17.5 13.3 132 18.9 16.1 117 ----- ----- Basin Index (%) 119 104 LOWER GREEN RIVER Blacks Fork Jct 8870 3.5 -M * 5.6 -M * Buck Pasture 9700 6.8 -M * 8.5 -M * EF Blacks Fork GS 9360 4.0 -M * 5.4 -M * Hams Fork 7840 7.2 7.1 101 6.4 7.3 88 Hewinta 9519 4.0 5.7 70 6.1 8.6 71 Hickerson Park 9145 4.3 3.8 113 4.9 6.1 80 Hole-in-Rock 9150 3.6 4.0 90 4.5 5.7 79 Indian Creek 9425 13.5 14.6 92 13.1 14.0 94 Kelley R.S. 8180 9.1 9.0 101 9.9 11.6 85 Spirit Lk 10235 4.8 -M * 6.9 -M * Steel Creek Park 10200 1.9 8.7 22 7.4 9.9 75 ----- ----- Basin Index (%) 82 83 UPPER BEAR RIVER Bear River RS 8777 4.2 -M * 5.0 -M * Bug Lake 7950 8.8 10.7 82 8.6 12.4 69 Burts Miller Ranch 8000 3.2 -M * 2.4 -M * Chalk Creek #1 8993 9.6 13.4 72 10.0 15.7 64 Hayden Fork 9212 5.8 8.6 67 9.3 13.1 71 Kelley R.S. 8180 9.1 9.0 101 9.9 11.6 85 Lily Lake 9156 5.4 7.4 73 6.1 10.7 57 Monte Cristo 8960 13.0 16.0 81 12.3 16.3 75 Salt River Summit 7760 7.8 7.8 100 9.6 10.7 90 ----- ----- Basin Index (%) 82 73 ----------------------------------------------------------------------------- -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.