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: MARCH 27 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 16.0 14.7 109 19.2 19.7 97 Black Bear 8170 30.3 34.6 88 32.1 35.6 90 Blind Bull Sum 8650 24.1 21.3 113 15.2 18.3 83 Cottonwood Creek 7670 20.7 20.6 100 24.5 23.0 107 East Rim Divide 7930 10.7 9.8 109 10.3 11.0 94 Grand Targhee 9260 37.6 34.6 109 28.6 28.3 101 Granite Creek 6770 14.2 14.8 96 16.6 18.7 89 Grassy Lake 7265 29.5 30.8 96 33.9 33.9 100 Gros Ventre Summit 8750 10.7 12.2 88 10.0 11.9 84 Gunsight Pass 9820 13.0 12.9 101 13.5 12.7 106 Lewis Lake Divide 7850 29.4 29.0 101 31.2 33.2 94 Phillips Bench 8200 21.5 23.4 92 24.7 26.4 94 Salt River Summit 7760 12.6 12.5 101 14.4 15.6 92 Snake River Station 6920 17.3 15.8 109 22.5 21.1 107 Spring Creek Divide 9000 23.8 22.2 107 22.0 22.3 99 Thumb Divide 7980 13.7 15.1 91 14.5 17.2 84 Togwotee Pass 9580 20.1 21.3 94 23.1 22.6 102 Two Ocean Plateau 9240 25.1 25.0 100 23.6 25.4 93 Willow Creek 8380 26.7 26.2 102 30.4 31.2 97 Younts Peak 8350 13.3 13.8 96 12.3 14.7 84 ----- ----- Basin Index (%) 100 95 MADISON-GALLATIN Black Bear 8170 30.3 34.6 88 32.1 35.6 90 Canyon 7870 10.5 12.1 87 12.8 15.0 85 Madison Plateau 7750 20.5 20.8 99 21.2 24.5 87 West Yellowstone 6700 10.6 10.1 105 12.5 13.1 95 Whiskey Creek 6800 12.7 14.6 87 15.4 18.8 82 ----- ----- Basin Index (%) 92 88 YELLOWSTONE Beartooth Lake 9360 16.1 20.4 79 16.8 18.4 91 Burnt Mtn 5880 .7 4.7 15 8.6 11.4 75 Canyon 7870 10.5 12.1 87 12.8 15.0 85 Cole Creek 7850 7.1 12.8 55 -M 11.4 * Evening Star 9200 24.1 23.5 103 26.8 25.4 106 Fisher Creek 9100 27.4 28.9 95 24.6 29.6 83 Northeast Entrance 7350 7.1 9.7 73 11.0 11.4 96 Parker Peak 9400 18.7 18.3 102 19.5 16.3 120 Sylvan Lake 8420 16.9 18.8 90 21.9 20.7 106 Thumb Divide 7980 13.7 15.1 91 14.5 17.2 84 Two Ocean Plateau 9240 25.1 25.0 100 23.6 25.4 93 White Mill 8700 21.8 21.1 103 20.5 22.0 93 Wolverine 7650 8.1 8.9 91 11.1 11.4 97 ----- ----- Basin Index (%) 90 94 WIND RIVER Burroughs Creek 8750 9.9 -M * 11.7 -M * Castle Creek 8400 4.3 -M * 5.7 -M * Cold Springs 9630 6.8 6.9 99 7.2 9.0 80 Deer Park 9700 13.7 14.2 96 14.1 17.9 79 Hobbs Park 10100 12.4 12.8 97 11.4 11.8 97 Kirwin 9550 8.6 8.9 97 10.3 10.5 98 Little Warm 9370 8.4 9.9 85 10.2 11.8 86 Owl Creek 8975 3.6 4.8 75 3.9 5.4 72 South Pass 9040 11.9 14.4 83 9.9 16.0 62 St. Lawrence Alt 8620 4.2 6.6 64 6.3 8.0 79 Togwotee Pass 9580 20.1 21.3 94 23.1 22.6 102 Townsend Creek 8700 7.8 8.7 90 8.8 10.6 83 ----- ----- Basin Index (%) 90 85 BIGHORN BASIN Bald Mtn. 9380 12.7 17.3 73 10.5 15.5 68 Bear Trap Meadow 8200 6.1 5.1 120 5.5 7.6 72 Bone Springs Div 9350 11.1 14.7 76 9.2 14.1 65 Grave Springs 8550 6.0 8.4 71 4.8 9.4 51 Kirwin 9550 8.6 8.9 97 10.3 10.5 98 Marquette 8760 4.2 -M * 8.1 -M * Middle Powder 7760 9.1 10.6 86 -M 10.6 * Owl Creek 8975 3.6 4.8 75 3.9 5.4 72 Powder River Pass 9480 7.5 9.6 78 7.2 11.4 63 Shell Creek 9580 10.2 13.7 74 8.9 12.5 71 Timber Creek 7950 3.8 4.3 88 8.1 6.5 125 ----- ----- Basin Index (%) 81 74 SHOSHONE RIVER Blackwater 9780 20.6 21.4 96 22.9 18.9 121 Evening Star 9200 24.1 23.5 103 26.8 25.4 106 Marquette 8760 4.2 -M * 8.1 -M * Sylvan Road 7120 8.5 10.9 78 14.7 15.6 94 Younts Peak 8350 13.3 13.8 96 12.3 14.7 84 ----- ----- Basin Index (%) 96 103 POWDER RIVER Bear Trap Meadow 8200 6.1 5.1 120 5.5 7.6 72 Cloud Peak Reservoir 9860 9.2 13.5 68 9.7 11.9 82 Grave Springs 8550 6.0 8.4 71 4.8 9.4 51 Hansen Sawmill 8360 5.0 6.1 82 5.7 7.7 74 Middle Powder 7760 9.1 10.6 86 -M 10.6 * Powder River Pass 9480 7.5 9.6 78 7.2 11.4 63 Soldier Park 8720 3.2 -M * 5.5 -M * ----- ----- Basin Index (%) 80 69 TONGUE RIVER Big Goose 7990 5.6 8.3 67 6.2 9.8 63 Bone Springs Div 9350 11.1 14.7 76 9.2 14.1 65 Burgess Junction 7880 6.4 10.5 61 7.0 11.1 63 Dome Lake 8880 7.2 11.0 65 7.3 12.2 60 Little Goose 8870 6.7 -M * 8.0 -M * Sucker Creek 8880 7.7 11.1 69 8.0 12.9 62 Tie Creek 6870 .6 5.3 11 5.9 10.2 58 ----- ----- Basin Index (%) 63 62 BELLE FOURCHE Cole Canyon 5910 3.1 5.7 54 8.2 8.3 99 ----- ----- Basin Index (%) 54 99 CHEYENNE RIVER BASIN Blind Park 6890 4.2 7.1 59 8.9 10.8 82 North Rapid Creek 6130 4.8 6.7 72 7.0 8.9 79 ----- ----- Basin Index (%) 65 81 UPPER N. PLATTE Arapaho Ridge 10960 23.2 18.9 123 23.1 20.6 112 Blackhall Mtn 9820 28.5 -M * 27.6 -M * Columbine 9160 23.9 22.0 109 24.5 23.8 103 Divide Peak 8880 18.0 18.8 96 20.7 19.8 105 Joe Wright 10120 15.8 19.7 80 23.5 23.8 99 Laprele Creek 8375 8.6 9.4 91 9.3 11.4 82 Med Bow 10500 32.1 -M * 28.3 -M * North French Creek 10130 24.2 27.0 90 23.0 24.8 93 Never Summer 10280 18.8 18.7 101 16.1 -M * Old Battle 10000 27.1 28.1 96 25.5 32.5 78 Rawah 9020 13.1 10.0 131 16.7 12.8 130 Sage Creek Basin 7850 14.7 12.2 120 11.6 13.4 87 Sand Lake 10050 24.3 26.1 93 23.0 22.7 101 South Brush Creek 8440 11.4 11.8 97 11.8 14.0 84 Tower 10500 36.5 41.9 87 34.3 37.1 92 Webber Springs 9250 21.0 22.3 94 23.1 24.8 93 Willow Creek Pass 9540 15.2 11.4 133 15.2 12.2 125 Zirkel 9340 27.1 25.9 105 28.8 26.4 109 ----- ----- Basin Index (%) 100 98 SWEETWATER Deer Park 9700 13.7 14.2 96 14.1 17.9 79 Larsen Creek 9000 8.4 11.8 71 11.3 -M * South Pass 9040 11.9 14.4 83 9.9 16.0 62 ----- ----- Basin Index (%) 84 71 LOWER N. PLATTE Casper Mtn. 7900 13.1 12.8 102 12.4 13.4 93 Laprele Creek 8375 8.6 9.4 91 9.3 11.4 82 Reno Hill 8400 13.1 12.6 104 15.3 13.8 111 Windy Peak 7900 8.0 7.7 104 9.1 9.6 95 ----- ----- Basin Index (%) 101 96 LARAMIE RIVER Brooklyn Lake 10240 22.7 18.7 121 21.5 19.3 111 Cinnabar Park 9574 18.7 19.5 96 21.0 22.4 94 Crow Creek 8330 8.7 6.9 126 13.0 9.8 133 Deadman Hill 10220 18.8 14.8 127 17.9 15.8 113 Rawah 9020 13.1 10.0 131 16.7 12.8 130 Roach 9700 16.6 14.7 113 18.2 17.6 103 ----- ----- Basin Index (%) 117 111 S. PLATTE Black Mountain 8920 12.6 -M * 15.3 -M * Crow Creek 8330 8.7 6.9 126 13.0 9.8 133 Deadman Hill 10220 18.8 14.8 127 17.9 15.8 113 ----- ----- Basin Index (%) 127 121 LITTLE SNAKE RIVER Battle Mountain 7440 12.9 11.0 117 13.8 14.0 99 Divide Peak 8880 18.0 18.8 96 20.7 19.8 105 Elk River 8700 17.4 17.8 98 17.5 18.6 94 Little Snake River 8915 22.5 21.9 103 29.0 27.4 106 Old Battle 10000 27.1 28.1 96 25.5 32.5 78 Sage Creek Basin 7850 14.7 12.2 120 11.6 13.4 87 Sandstone RS 8150 10.4 13.0 80 10.7 17.2 62 Whiskey Park 8950 25.8 24.8 104 25.5 26.0 98 ----- ----- Basin Index (%) 101 91 UPPER GREEN RIVER Big Sandy Opening 9080 10.1 12.0 84 10.4 12.3 85 Blind Bull Sum 8650 24.1 21.3 113 15.2 18.3 83 East Rim Divide 7930 10.7 9.8 109 10.3 11.0 94 Elkhart Park G.S. 9400 8.4 11.5 73 10.3 12.3 84 Gros Ventre Summit 8750 10.7 12.2 88 10.0 11.9 84 Gunsight Pass 9820 13.0 12.9 101 13.5 12.7 106 Kendall R.S. 7740 9.8 11.3 87 11.3 13.5 84 Loomis Park 8240 13.7 14.3 96 15.6 16.2 96 New Fork Lake 8340 8.9 9.9 90 10.6 10.1 105 Pocket Creek 9360 7.1 -M * 8.5 -M * Snider Basin 8060 12.0 11.5 104 11.9 13.2 90 Spring Creek Divide 9000 23.8 22.2 107 22.0 22.3 99 Triple Peak 8500 24.1 20.7 116 24.8 23.7 105 ----- ----- Basin Index (%) 100 93 LOWER GREEN RIVER Blacks Fork Jct 8870 11.0 -M * 11.3 -M * Buck Pasture 9700 12.9 -M * 15.9 -M * EF Blacks Fork GS 9360 9.2 -M * 9.4 -M * Hams Fork 7840 -M 10.6 * -M 10.6 * Hewinta 9519 11.0 10.0 110 12.8 12.9 99 Hickerson Park 9145 9.4 7.0 134 9.9 9.3 106 Hole-in-Rock 9150 9.9 6.9 143 10.6 8.7 122 Indian Creek 9425 20.6 22.7 91 16.0 21.0 76 Kelley R.S. 8180 12.9 14.4 90 14.4 17.0 85 Spirit Lk 10235 12.2 -M * 14.2 -M * Steel Creek Park 10200 15.0 14.2 106 17.0 15.0 113 ----- ----- Basin Index (%) 105 96 UPPER BEAR RIVER Bear River RS 8777 8.6 -M * 11.3 -M * Bug Lake 7950 17.1 17.6 97 17.4 18.1 96 Burts Miller Ranch 8000 5.2 -M * 5.4 -M * Chalk Creek #1 8993 19.0 22.4 85 20.8 23.2 90 Hayden Fork 9212 14.0 14.6 96 18.1 19.4 93 Kelley R.S. 8180 12.9 14.4 90 14.4 17.0 85 Lily Lake 9156 12.5 11.8 106 11.9 15.8 75 Monte Cristo 8960 25.8 25.3 102 25.3 24.2 105 Salt River Summit 7760 12.6 12.5 101 14.4 15.6 92 ----- ----- Basin Index (%) 96 92 ----------------------------------------------------------------------------- -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.