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: MARCH 15 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 14.4 14.2 101 17.7 18.6 95 Black Bear 8170 29.0 32.0 91 30.9 33.7 92 Blind Bull Sum 8650 21.6 20.0 108 14.2 17.2 83 Cottonwood Creek 7670 18.3 18.9 97 21.7 21.2 102 East Rim Divide 7930 9.8 9.5 103 9.5 10.3 92 Grand Targhee 9260 33.8 32.5 104 26.2 26.5 99 Granite Creek 6770 13.4 14.9 90 15.8 17.7 89 Grassy Lake 7265 27.2 28.5 95 31.7 31.8 100 Gros Ventre Summit 8750 9.3 11.1 84 8.8 11.1 79 Gunsight Pass 9820 11.6 11.7 99 12.3 11.9 103 Lewis Lake Divide 7850 26.5 27.2 97 29.2 31.3 93 Phillips Bench 8200 19.3 21.8 89 22.5 24.6 91 Salt River Summit 7760 10.7 11.6 92 12.6 14.5 87 Snake River Station 6920 15.4 15.2 101 20.7 19.9 104 Spring Creek Divide 9000 21.8 20.1 108 20.3 20.8 98 Thumb Divide 7980 12.2 13.6 90 13.4 16.0 84 Togwotee Pass 9580 18.4 20.0 92 21.2 21.1 100 Two Ocean Plateau 9240 22.7 23.5 97 21.6 23.7 91 Willow Creek 8380 23.8 24.7 96 27.4 29.1 94 Younts Peak 8350 12.0 12.8 94 11.0 13.7 80 ----- ----- Basin Index (%) 97 94 MADISON-GALLATIN Black Bear 8170 29.0 32.0 91 30.9 33.7 92 Canyon 7870 9.8 11.6 84 12.0 14.2 85 Madison Plateau 7750 19.7 19.8 99 20.5 23.1 89 West Yellowstone 6700 9.9 9.9 100 12.2 12.5 98 Whiskey Creek 6800 12.3 13.6 90 14.7 17.8 83 ----- ----- Basin Index (%) 93 89 YELLOWSTONE Beartooth Lake 9360 15.0 18.6 81 15.4 17.1 90 Burnt Mtn 5880 .0 4.4 0 7.1 10.5 68 Canyon 7870 9.8 11.6 84 12.0 14.2 85 Cole Creek 7850 5.0 11.5 43 6.8 10.2 67 Evening Star 9200 22.2 21.6 103 24.8 23.7 105 Fisher Creek 9100 26.0 27.7 94 23.0 27.7 83 Northeast Entrance 7350 7.3 8.7 84 10.5 10.7 98 Parker Peak 9400 17.1 17.1 100 18.0 15.3 118 Sylvan Lake 8420 15.3 17.5 87 20.1 19.4 104 Thumb Divide 7980 12.2 13.6 90 13.4 16.0 84 Two Ocean Plateau 9240 22.7 23.5 97 21.6 23.7 91 White Mill 8700 20.6 19.4 106 19.5 20.6 95 Wolverine 7650 10.4 8.8 118 10.9 10.6 103 ----- ----- Basin Index (%) 90 92 WIND RIVER Burroughs Creek 8750 9.5 -M * 11.3 -M * Castle Creek 8400 3.8 -M * 5.4 -M * Cold Springs 9630 6.1 6.1 100 6.4 8.2 78 Deer Park 9700 10.6 12.3 86 11.0 16.6 66 Hobbs Park 10100 9.2 11.2 82 8.6 10.6 81 Kirwin 9550 7.6 8.1 94 9.2 9.6 96 Little Warm 9370 7.4 9.0 82 9.1 10.8 84 Owl Creek 8975 3.1 4.5 69 3.5 4.7 74 South Pass 9040 8.9 12.9 69 7.1 14.8 48 St. Lawrence Alt 8620 3.0 5.9 51 5.2 7.2 72 Togwotee Pass 9580 18.4 20.0 92 21.2 21.1 100 Townsend Creek 8700 5.5 7.6 72 6.4 9.6 67 ----- ----- Basin Index (%) 82 77 BIGHORN BASIN Bald Mtn. 9380 11.2 16.2 69 9.3 14.3 65 Bear Trap Meadow 8200 5.0 4.8 104 4.5 6.8 66 Bone Springs Div 9350 9.8 13.6 72 8.2 12.8 64 Grave Springs 8550 4.6 7.7 60 -M 8.6 * Kirwin 9550 7.6 8.1 94 9.2 9.6 96 Marquette 8760 2.8 -M * 6.7 -M * Middle Powder 7760 6.2 9.1 68 3.3 9.6 34 Owl Creek 8975 3.1 4.5 69 3.5 4.7 74 Powder River Pass 9480 6.6 8.8 75 6.2 10.4 60 Shell Creek 9580 8.8 12.5 70 7.6 11.4 67 Timber Creek 7950 3.0 4.2 71 7.1 5.8 122 ----- ----- Basin Index (%) 74 69 SHOSHONE RIVER Blackwater 9780 18.0 19.7 91 20.4 17.6 116 Evening Star 9200 22.2 21.6 103 24.8 23.7 105 Marquette 8760 2.8 -M * 6.7 -M * Sylvan Road 7120 7.7 10.2 75 13.6 14.8 92 Younts Peak 8350 12.0 12.8 94 11.0 13.7 80 ----- ----- Basin Index (%) 93 100 POWDER RIVER Bear Trap Meadow 8200 5.0 4.8 104 4.5 6.8 66 Cloud Peak Reservoir 9860 7.0 12.2 57 7.5 10.6 71 Grave Springs 8550 4.6 7.7 60 -M 8.6 * Hansen Sawmill 8360 3.8 5.3 72 4.5 6.8 66 Middle Powder 7760 6.2 9.1 68 3.3 9.6 34 Powder River Pass 9480 6.6 8.8 75 6.2 10.4 60 Soldier Park 8720 1.9 -M * 4.3 -M * ----- ----- Basin Index (%) 69 59 TONGUE RIVER Big Goose 7990 3.7 7.4 50 4.5 8.7 52 Bone Springs Div 9350 9.8 13.6 72 8.2 12.8 64 Burgess Junction 7880 5.3 9.4 56 6.2 10.0 62 Dome Lake 8880 5.5 9.7 57 5.3 10.9 49 Little Goose 8870 4.4 -M * 5.8 -M * Sucker Creek 8880 6.0 10.4 58 6.2 11.7 53 Tie Creek 6870 .2 4.7 4 4.7 9.3 51 ----- ----- Basin Index (%) 55 55 BELLE FOURCHE Cole Canyon 5910 2.3 5.4 43 6.7 7.7 87 ----- ----- Basin Index (%) 43 87 CHEYENNE RIVER BASIN Blind Park 6890 3.4 7.1 48 7.8 10.2 76 North Rapid Creek 6130 4.5 6.4 70 6.3 8.3 76 ----- ----- Basin Index (%) 59 76 UPPER N. PLATTE Arapaho Ridge 10960 18.7 18.0 104 19.0 19.0 100 Blackhall Mtn 9820 24.5 -M * 24.2 -M * Columbine 9160 20.2 21.5 94 20.7 22.2 93 Divide Peak 8880 16.1 17.2 94 18.5 18.4 101 Joe Wright 10120 12.7 18.7 68 20.0 22.0 91 Laprele Creek 8375 7.4 8.8 84 8.1 10.4 78 Med Bow 10500 27.3 -M * 24.3 -M * North French Creek 10130 20.9 23.9 87 20.2 23.0 88 Never Summer 10280 15.2 17.3 88 13.4 -M * Old Battle 10000 24.1 26.0 93 22.4 30.5 73 Rawah 9020 10.3 9.2 112 13.9 11.6 120 Sage Creek Basin 7850 12.6 11.8 107 10.5 12.8 82 Sand Lake 10050 20.5 23.5 87 19.5 20.8 94 South Brush Creek 8440 10.1 11.2 90 10.4 12.9 81 Tower 10500 30.4 38.9 78 29.8 34.6 86 Webber Springs 9250 18.0 20.5 88 20.2 23.1 87 Willow Creek Pass 9540 12.1 10.5 115 12.5 11.3 111 Zirkel 9340 23.4 25.5 92 25.4 24.8 102 ----- ----- Basin Index (%) 90 91 SWEETWATER Deer Park 9700 10.6 12.3 86 11.0 16.6 66 Larsen Creek 9000 7.0 10.7 65 9.8 -M * South Pass 9040 8.9 12.9 69 7.1 14.8 48 ----- ----- Basin Index (%) 74 58 LOWER N. PLATTE Casper Mtn. 7900 9.2 11.8 78 10.0 12.3 81 Laprele Creek 8375 7.4 8.8 84 8.1 10.4 78 Reno Hill 8400 10.5 11.5 91 12.9 12.4 104 Windy Peak 7900 6.8 6.7 101 7.8 8.7 90 ----- ----- Basin Index (%) 87 89 LARAMIE RIVER Brooklyn Lake 10240 18.9 17.3 109 17.8 17.8 100 Cinnabar Park 9574 16.5 17.8 93 18.4 20.8 88 Crow Creek 8330 6.4 7.1 90 10.6 8.6 123 Deadman Hill 10220 14.7 13.4 110 14.1 14.3 99 Rawah 9020 10.3 9.2 112 13.9 11.6 120 Roach 9700 13.4 13.5 99 15.2 16.3 93 ----- ----- Basin Index (%) 102 101 S. PLATTE Black Mountain 8920 9.6 -M * 12.4 -M * Crow Creek 8330 6.4 7.1 90 10.6 8.6 123 Deadman Hill 10220 14.7 13.4 110 14.1 14.3 99 ----- ----- Basin Index (%) 103 108 LITTLE SNAKE RIVER Battle Mountain 7440 11.2 10.9 103 13.0 13.2 98 Divide Peak 8880 16.1 17.2 94 18.5 18.4 101 Elk River 8700 14.9 17.2 87 15.6 17.4 90 Little Snake River 8915 19.3 20.5 94 26.0 26.1 100 Old Battle 10000 24.1 26.0 93 22.4 30.5 73 Sage Creek Basin 7850 12.6 11.8 107 10.5 12.8 82 Sandstone RS 8150 10.1 11.6 87 10.0 16.3 61 Whiskey Park 8950 21.9 23.8 92 22.2 24.4 91 ----- ----- Basin Index (%) 94 87 UPPER GREEN RIVER Big Sandy Opening 9080 8.9 11.1 80 9.4 11.4 82 Blind Bull Sum 8650 21.6 20.0 108 14.2 17.2 83 East Rim Divide 7930 9.8 9.5 103 9.5 10.3 92 Elkhart Park G.S. 9400 7.6 10.3 74 9.6 11.4 84 Gros Ventre Summit 8750 9.3 11.1 84 8.8 11.1 79 Gunsight Pass 9820 11.6 11.7 99 12.3 11.9 103 Kendall R.S. 7740 9.3 10.9 85 10.8 12.6 86 Loomis Park 8240 12.8 13.0 98 14.6 15.1 97 New Fork Lake 8340 8.7 9.2 95 10.0 9.5 105 Pocket Creek 9360 6.1 -M * 7.6 -M * Snider Basin 8060 11.0 10.8 102 10.9 12.4 88 Spring Creek Divide 9000 21.8 20.1 108 20.3 20.8 98 Triple Peak 8500 21.2 19.0 112 22.3 22.0 101 ----- ----- Basin Index (%) 98 92 LOWER GREEN RIVER Blacks Fork Jct 8870 9.7 -M * 10.0 -M * Buck Pasture 9700 11.2 -M * 13.9 -M * EF Blacks Fork GS 9360 7.8 -M * 8.0 -M * Hams Fork 7840 -M 10.1 * -M 9.8 * Hewinta 9519 9.1 9.1 100 11.0 11.9 92 Hickerson Park 9145 8.0 6.6 121 8.8 8.5 104 Hole-in-Rock 9150 8.0 6.3 127 9.2 7.9 116 Indian Creek 9425 17.8 20.7 86 14.1 19.4 73 Kelley R.S. 8180 11.4 12.9 88 12.6 15.6 81 Spirit Lk 10235 10.5 -M * 12.8 -M * Steel Creek Park 10200 13.1 13.0 101 15.2 13.8 110 ----- ----- Basin Index (%) 98 92 UPPER BEAR RIVER Bear River RS 8777 7.5 -M * 10.3 -M * Bug Lake 7950 15.8 16.4 96 15.9 16.8 95 Burts Miller Ranch 8000 4.6 -M * 5.0 -M * Chalk Creek #1 8993 17.1 20.5 83 18.9 21.4 88 Hayden Fork 9212 11.2 14.0 80 16.4 17.9 92 Kelley R.S. 8180 11.4 12.9 88 12.6 15.6 81 Lily Lake 9156 11.0 11.3 97 11.8 14.5 81 Monte Cristo 8960 23.3 23.5 99 22.7 22.4 101 Salt River Summit 7760 10.7 11.6 92 12.6 14.5 87 ----- ----- Basin Index (%) 91 90 ----------------------------------------------------------------------------- -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.