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: MARCH 25 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 15.7 14.6 108 19.1 19.4 98 Black Bear 8170 30.4 33.9 90 32.2 35.3 91 Blind Bull Sum 8650 24.2 21.1 115 15.2 18.1 84 Cottonwood Creek 7670 20.8 20.5 101 24.3 22.7 107 East Rim Divide 7930 10.7 9.7 110 10.4 10.9 95 Grand Targhee 9260 37.5 33.9 111 28.5 27.7 103 Granite Creek 6770 14.3 14.8 97 16.5 18.5 89 Grassy Lake 7265 29.6 30.3 98 34.0 33.4 102 Gros Ventre Summit 8750 10.6 12.0 88 10.0 11.8 85 Gunsight Pass 9820 12.9 12.5 103 13.6 12.5 109 Lewis Lake Divide 7850 29.3 28.6 102 31.1 32.9 95 Phillips Bench 8200 21.5 23.1 93 24.7 25.9 95 Salt River Summit 7760 12.7 12.3 103 14.4 15.4 94 Snake River Station 6920 16.8 15.6 108 22.5 20.9 108 Spring Creek Divide 9000 23.9 21.9 109 22.0 22.0 100 Thumb Divide 7980 13.6 14.8 92 14.4 16.9 85 Togwotee Pass 9580 20.1 21.1 95 23.0 22.3 103 Two Ocean Plateau 9240 25.1 24.6 102 23.5 25.1 94 Willow Creek 8380 26.8 25.5 105 30.4 30.7 99 Younts Peak 8350 13.4 13.7 98 12.2 14.5 84 ----- ----- Basin Index (%) 101 97 MADISON-GALLATIN Black Bear 8170 30.4 33.9 90 32.2 35.3 91 Canyon 7870 10.3 12.0 86 12.6 14.9 85 Madison Plateau 7750 20.4 20.6 99 21.2 24.2 88 West Yellowstone 6700 10.2 10.0 102 12.5 12.9 97 Whiskey Creek 6800 12.8 14.4 89 15.3 18.6 82 ----- ----- Basin Index (%) 93 89 YELLOWSTONE Beartooth Lake 9360 16.1 20.1 80 16.6 18.1 92 Burnt Mtn 5880 .4 4.8 8 8.3 11.2 74 Canyon 7870 10.3 12.0 86 12.6 14.9 85 Cole Creek 7850 6.4 12.5 51 -M 11.2 * Evening Star 9200 24.0 23.1 104 26.5 25.0 106 Fisher Creek 9100 27.3 28.6 95 24.3 29.3 83 Northeast Entrance 7350 7.1 9.5 75 11.0 11.2 98 Parker Peak 9400 18.6 18.0 103 19.2 16.1 119 Sylvan Lake 8420 16.6 18.6 89 21.6 20.4 106 Thumb Divide 7980 13.6 14.8 92 14.4 16.9 85 Two Ocean Plateau 9240 25.1 24.6 102 23.5 25.1 94 White Mill 8700 21.8 20.8 105 20.4 21.8 94 Wolverine 7650 8.5 8.9 96 11.1 11.2 99 ----- ----- Basin Index (%) 91 95 WIND RIVER Burroughs Creek 8750 10.0 -M * 11.7 -M * Castle Creek 8400 4.1 -M * 5.7 -M * Cold Springs 9630 6.5 6.7 97 6.9 8.8 78 Deer Park 9700 13.2 14.1 94 13.7 17.6 78 Hobbs Park 10100 11.5 12.5 92 10.6 11.5 92 Kirwin 9550 8.5 8.7 98 9.9 10.3 96 Little Warm 9370 8.1 9.7 84 9.8 11.5 85 Owl Creek 8975 3.5 4.7 74 4.1 5.2 79 South Pass 9040 11.7 14.4 81 9.5 15.8 60 St. Lawrence Alt 8620 3.9 6.4 61 6.0 7.8 77 Togwotee Pass 9580 20.1 21.1 95 23.0 22.3 103 Townsend Creek 8700 7.4 8.6 86 8.5 10.4 82 ----- ----- Basin Index (%) 88 84 BIGHORN BASIN Bald Mtn. 9380 12.4 16.8 74 10.1 15.3 66 Bear Trap Meadow 8200 5.8 5.2 112 5.2 7.4 70 Bone Springs Div 9350 11.0 14.3 77 9.2 13.8 67 Grave Springs 8550 5.5 8.3 66 4.3 9.3 46 Kirwin 9550 8.5 8.7 98 9.9 10.3 96 Marquette 8760 4.0 -M * 7.8 -M * Middle Powder 7760 7.6 10.4 73 -M 10.4 * Owl Creek 8975 3.5 4.7 74 4.1 5.2 79 Powder River Pass 9480 7.4 9.5 78 7.0 11.3 62 Shell Creek 9580 10.1 13.3 76 8.4 12.3 68 Timber Creek 7950 3.6 4.2 86 7.8 6.4 122 ----- ----- Basin Index (%) 79 72 SHOSHONE RIVER Blackwater 9780 20.2 21.1 96 22.5 18.6 121 Evening Star 9200 24.0 23.1 104 26.5 25.0 106 Marquette 8760 4.0 -M * 7.8 -M * Sylvan Road 7120 8.2 10.7 77 14.6 15.5 94 Younts Peak 8350 13.4 13.7 98 12.2 14.5 84 ----- ----- Basin Index (%) 96 103 POWDER RIVER Bear Trap Meadow 8200 5.8 5.2 112 5.2 7.4 70 Cloud Peak Reservoir 9860 9.0 13.4 67 9.5 11.7 81 Grave Springs 8550 5.5 8.3 66 4.3 9.3 46 Hansen Sawmill 8360 5.1 6.0 85 5.7 7.5 76 Middle Powder 7760 7.6 10.4 73 -M 10.4 * Powder River Pass 9480 7.4 9.5 78 7.0 11.3 62 Soldier Park 8720 3.2 -M * 5.5 -M * ----- ----- Basin Index (%) 77 67 TONGUE RIVER Big Goose 7990 5.3 8.1 65 5.9 9.6 61 Bone Springs Div 9350 11.0 14.3 77 9.2 13.8 67 Burgess Junction 7880 6.2 10.1 61 6.8 10.8 63 Dome Lake 8880 6.9 10.7 64 6.9 12.0 58 Little Goose 8870 6.3 -M * 7.7 -M * Sucker Creek 8880 7.5 11.1 68 7.6 12.7 60 Tie Creek 6870 .4 5.2 8 5.6 10.0 56 ----- ----- Basin Index (%) 63 61 BELLE FOURCHE Cole Canyon 5910 3.0 5.7 53 8.0 8.2 98 ----- ----- Basin Index (%) 53 98 CHEYENNE RIVER BASIN Blind Park 6890 3.7 7.0 53 8.7 10.7 81 North Rapid Creek 6130 4.4 6.7 66 7.0 8.8 80 ----- ----- Basin Index (%) 59 81 UPPER N. PLATTE Arapaho Ridge 10960 23.0 18.5 124 23.0 20.2 114 Blackhall Mtn 9820 28.4 -M * 26.9 -M * Columbine 9160 23.8 22.0 108 24.5 23.5 104 Divide Peak 8880 18.3 18.3 100 20.5 19.6 105 Joe Wright 10120 15.8 19.4 81 23.3 23.5 99 Laprele Creek 8375 8.4 9.4 89 9.1 11.2 81 Med Bow 10500 31.7 -M * 28.0 -M * North French Creek 10130 24.0 26.6 90 22.8 24.5 93 Never Summer 10280 18.7 18.5 101 16.1 -M * Old Battle 10000 26.8 27.6 97 25.0 32.2 78 Rawah 9020 13.0 9.8 133 16.9 12.7 133 Sage Creek Basin 7850 14.9 11.9 125 11.6 13.2 88 Sand Lake 10050 24.1 25.7 94 22.9 22.4 102 South Brush Creek 8440 11.5 11.6 99 11.9 13.8 86 Tower 10500 35.9 41.3 87 33.9 36.7 92 Webber Springs 9250 20.7 21.8 95 22.9 24.5 93 Willow Creek Pass 9540 15.2 11.2 136 15.2 12.0 127 Zirkel 9340 26.8 25.6 105 28.6 26.1 110 ----- ----- Basin Index (%) 101 99 SWEETWATER Deer Park 9700 13.2 14.1 94 13.7 17.6 78 Larsen Creek 9000 8.2 11.6 71 11.0 -M * South Pass 9040 11.7 14.4 81 9.5 15.8 60 ----- ----- Basin Index (%) 83 69 LOWER N. PLATTE Casper Mtn. 7900 12.0 12.7 94 11.5 13.3 86 Laprele Creek 8375 8.4 9.4 89 9.1 11.2 81 Reno Hill 8400 12.4 12.4 100 14.6 13.6 107 Windy Peak 7900 7.8 7.5 104 8.9 9.4 95 ----- ----- Basin Index (%) 97 93 LARAMIE RIVER Brooklyn Lake 10240 22.4 18.3 122 21.0 19.1 110 Cinnabar Park 9574 18.7 19.2 97 20.6 22.0 94 Crow Creek 8330 8.7 6.9 126 12.9 9.6 134 Deadman Hill 10220 18.6 14.4 129 17.7 15.5 114 Rawah 9020 13.0 9.8 133 16.9 12.7 133 Roach 9700 16.5 14.4 115 18.0 17.4 103 ----- ----- Basin Index (%) 118 111 S. PLATTE Black Mountain 8920 12.7 -M * 15.3 -M * Crow Creek 8330 8.7 6.9 126 12.9 9.6 134 Deadman Hill 10220 18.6 14.4 129 17.7 15.5 114 ----- ----- Basin Index (%) 128 122 LITTLE SNAKE RIVER Battle Mountain 7440 12.4 11.2 111 14.2 13.9 102 Divide Peak 8880 18.3 18.3 100 20.5 19.6 105 Elk River 8700 17.5 17.6 99 17.4 18.4 95 Little Snake River 8915 22.7 21.6 105 29.0 27.1 107 Old Battle 10000 26.8 27.6 97 25.0 32.2 78 Sage Creek Basin 7850 14.9 11.9 125 11.6 13.2 88 Sandstone RS 8150 10.5 12.9 81 10.7 17.1 63 Whiskey Park 8950 25.7 24.6 104 25.4 25.7 99 ----- ----- Basin Index (%) 102 92 UPPER GREEN RIVER Big Sandy Opening 9080 10.1 11.9 85 10.4 12.1 86 Blind Bull Sum 8650 24.2 21.1 115 15.2 18.1 84 East Rim Divide 7930 10.7 9.7 110 10.4 10.9 95 Elkhart Park G.S. 9400 8.4 11.2 75 10.3 12.2 84 Gros Ventre Summit 8750 10.6 12.0 88 10.0 11.8 85 Gunsight Pass 9820 12.9 12.5 103 13.6 12.5 109 Kendall R.S. 7740 9.9 11.4 87 11.3 13.2 86 Loomis Park 8240 13.8 14.0 99 15.6 16.0 98 New Fork Lake 8340 9.0 9.7 93 10.6 10.0 106 Pocket Creek 9360 7.1 -M * 8.4 -M * Snider Basin 8060 11.8 11.3 104 12.0 13.1 92 Spring Creek Divide 9000 23.9 21.9 109 22.0 22.0 100 Triple Peak 8500 23.9 20.3 118 24.7 23.4 106 ----- ----- Basin Index (%) 101 95 LOWER GREEN RIVER Blacks Fork Jct 8870 11.0 -M * 11.1 -M * Buck Pasture 9700 12.9 -M * 15.7 -M * EF Blacks Fork GS 9360 9.2 -M * 9.1 -M * Hams Fork 7840 -M 10.5 * -M 10.5 * Hewinta 9519 11.0 9.9 111 12.5 12.7 98 Hickerson Park 9145 9.8 6.9 142 10.1 9.2 110 Hole-in-Rock 9150 9.3 6.9 135 10.6 8.6 123 Indian Creek 9425 20.6 22.2 93 15.9 20.7 77 Kelley R.S. 8180 13.1 14.1 93 14.4 16.7 86 Spirit Lk 10235 12.1 -M * 14.0 -M * Steel Creek Park 10200 14.9 13.8 108 16.8 14.7 114 ----- ----- Basin Index (%) 107 97 UPPER BEAR RIVER Bear River RS 8777 7.7 -M * 11.2 -M * Bug Lake 7950 17.3 17.3 100 17.5 17.8 98 Burts Miller Ranch 8000 4.8 -M * 5.6 -M * Chalk Creek #1 8993 18.8 22.1 85 20.4 22.9 89 Hayden Fork 9212 13.4 14.5 92 18.0 19.1 94 Kelley R.S. 8180 13.1 14.1 93 14.4 16.7 86 Lily Lake 9156 12.4 11.6 107 12.1 15.5 78 Monte Cristo 8960 25.7 25.1 102 25.2 23.7 106 Salt River Summit 7760 12.7 12.3 103 14.4 15.4 94 ----- ----- Basin Index (%) 97 93 ----------------------------------------------------------------------------- -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.