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: APRIL 8 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 14.8 15.2 97 20.1 20.7 97 Black Bear 8170 30.5 37.1 82 34.4 37.9 91 Blind Bull Sum 8650 25.5 23.3 109 16.5 19.3 85 Cottonwood Creek 7670 20.1 20.9 96 25.6 24.4 105 East Rim Divide 7930 9.4 10.2 92 10.9 11.7 93 Grand Targhee 9260 40.0 38.7 103 30.2 30.7 98 Granite Creek 6770 12.6 14.3 88 17.1 19.5 88 Grassy Lake 7265 30.3 31.4 96 35.2 35.6 99 Gros Ventre Summit 8750 11.0 12.9 85 10.8 12.8 84 Gunsight Pass 9820 13.7 13.9 99 14.5 13.8 105 Lewis Lake Divide 7850 29.2 30.0 97 32.1 35.1 91 Phillips Bench 8200 22.1 25.5 87 25.8 27.9 92 Salt River Summit 7760 12.5 12.7 98 15.4 16.5 93 Snake River Station 6920 15.9 14.8 107 22.9 22.2 103 Spring Creek Divide 9000 25.3 22.5 112 23.4 23.6 99 Thumb Divide 7980 13.2 14.7 90 15.3 18.4 83 Togwotee Pass 9580 21.4 22.2 96 24.4 24.1 101 Two Ocean Plateau 9240 26.7 26.2 102 25.1 26.9 93 Willow Creek 8380 27.5 28.4 97 32.0 33.3 96 Younts Peak 8350 12.8 14.4 89 13.4 15.6 86 ----- ----- Basin Index (%) 97 95 MADISON-GALLATIN Black Bear 8170 30.5 37.1 82 34.4 37.9 91 Canyon 7870 10.4 12.4 84 13.3 16.1 83 Madison Plateau 7750 21.6 21.6 100 22.6 26.1 87 West Yellowstone 6700 8.9 9.3 96 13.3 14.1 94 Whiskey Creek 6800 13.2 14.8 89 16.6 20.0 83 ----- ----- Basin Index (%) 89 88 YELLOWSTONE Beartooth Lake 9360 17.2 21.4 80 17.8 19.5 91 Burnt Mtn 5880 .5 4.3 12 10.9 12.9 84 Canyon 7870 10.4 12.4 84 13.3 16.1 83 Cole Creek 7850 10.9 14.8 74 11.9 12.9 92 Evening Star 9200 25.2 23.8 106 28.2 27.1 104 Fisher Creek 9100 29.0 31.3 93 26.2 31.3 84 Northeast Entrance 7350 6.8 8.9 76 11.6 12.1 96 Parker Peak 9400 21.1 19.6 108 20.9 17.5 119 Sylvan Lake 8420 17.3 19.4 89 23.3 22.0 106 Thumb Divide 7980 13.2 14.7 90 15.3 18.4 83 Two Ocean Plateau 9240 26.7 26.2 102 25.1 26.9 93 White Mill 8700 22.6 22.3 101 21.8 23.4 93 Wolverine 7650 9.7 9.6 101 12.1 12.1 100 ----- ----- Basin Index (%) 92 95 WIND RIVER Burroughs Creek 8750 9.9 -M * 13.0 -M * Castle Creek 8400 2.8 -M * 6.3 -M * Cold Springs 9630 8.4 6.6 127 10.1 9.9 102 Deer Park 9700 15.9 15.8 101 17.4 19.9 87 Hobbs Park 10100 15.8 14.2 111 15.5 13.5 115 Kirwin 9550 9.9 9.6 103 12.6 11.5 110 Little Warm 9370 9.2 10.3 89 11.4 12.8 89 Owl Creek 8975 4.4 5.8 76 5.4 6.0 90 South Pass 9040 14.1 15.3 92 13.0 17.3 75 St. Lawrence Alt 8620 6.5 6.9 94 9.4 9.0 104 Togwotee Pass 9580 21.4 22.2 96 24.4 24.1 101 Townsend Creek 8700 10.6 9.7 109 12.6 12.0 105 ----- ----- Basin Index (%) 100 97 BIGHORN BASIN Bald Mtn. 9380 15.4 19.2 80 12.1 16.8 72 Bear Trap Meadow 8200 6.6 4.9 135 6.6 8.6 77 Bone Springs Div 9350 12.6 16.9 75 10.8 15.5 70 Grave Springs 8550 7.6 9.5 80 6.6 10.7 62 Kirwin 9550 9.9 9.6 103 12.6 11.5 110 Marquette 8760 7.2 -M * 11.0 -M * Middle Powder 7760 10.6 12.1 88 7.8 11.7 67 Owl Creek 8975 4.4 5.8 76 5.4 6.0 90 Powder River Pass 9480 7.7 10.2 75 8.5 12.6 67 Shell Creek 9580 11.4 15.2 75 10.1 13.7 74 Timber Creek 7950 5.6 5.0 112 10.5 7.3 144 ----- ----- Basin Index (%) 85 80 SHOSHONE RIVER Blackwater 9780 22.3 22.7 98 24.6 20.3 121 Evening Star 9200 25.2 23.8 106 28.2 27.1 104 Marquette 8760 7.2 -M * 11.0 -M * Sylvan Road 7120 -M 10.7 * 15.3 16.5 93 Younts Peak 8350 12.8 14.4 89 13.4 15.6 86 ----- ----- Basin Index (%) 99 103 POWDER RIVER Bear Trap Meadow 8200 6.6 4.9 135 6.6 8.6 77 Cloud Peak Reservoir 9860 11.2 14.9 75 12.5 13.4 93 Grave Springs 8550 7.6 9.5 80 6.6 10.7 62 Hansen Sawmill 8360 6.3 6.1 103 7.4 8.6 86 Middle Powder 7760 10.6 12.1 88 7.8 11.7 67 Powder River Pass 9480 7.7 10.2 75 8.5 12.6 67 Soldier Park 8720 4.0 -M * 7.5 -M * ----- ----- Basin Index (%) 87 75 TONGUE RIVER Big Goose 7990 7.4 9.7 76 8.4 11.5 73 Bone Springs Div 9350 12.6 16.9 75 10.8 15.5 70 Burgess Junction 7880 8.7 12.0 72 9.3 12.3 76 Dome Lake 8880 9.0 11.8 76 9.3 13.6 68 Little Goose 8870 8.4 -M * 10.3 -M * Sucker Creek 8880 9.3 12.3 76 10.3 14.4 72 Tie Creek 6870 2.0 5.6 36 8.5 11.7 73 ----- ----- Basin Index (%) 72 72 BELLE FOURCHE Cole Canyon 5910 2.9 4.9 59 9.5 9.6 99 ----- ----- Basin Index (%) 59 99 CHEYENNE RIVER BASIN Blind Park 6890 2.4 6.9 35 10.5 11.9 88 North Rapid Creek 6130 2.9 6.4 45 8.3 10.0 83 ----- ----- Basin Index (%) 40 86 UPPER N. PLATTE Arapaho Ridge 10960 -M 21.0 * 24.4 22.6 108 Blackhall Mtn 9820 30.4 -M * 29.3 -M * Columbine 9160 24.8 23.4 106 26.2 25.5 103 Divide Peak 8880 19.2 20.0 96 22.3 21.4 104 Joe Wright 10120 18.4 21.4 86 25.9 25.8 100 Laprele Creek 8375 9.6 9.4 102 11.5 12.5 92 Med Bow 10500 34.4 -M * 30.3 -M * North French Creek 10130 26.1 29.7 88 24.9 26.7 93 Never Summer 10280 20.6 20.4 101 17.7 -M * Old Battle 10000 29.0 31.5 92 27.5 34.9 79 Rawah 9020 13.6 10.6 128 18.7 14.4 130 Sage Creek Basin 7850 14.6 11.6 126 12.5 14.6 86 Sand Lake 10050 26.9 29.1 92 25.7 24.8 104 South Brush Creek 8440 11.4 11.8 97 13.9 15.2 91 Tower 10500 39.4 46.0 86 37.9 39.8 95 Webber Springs 9250 21.7 23.1 94 24.5 26.7 92 Willow Creek Pass 9540 16.0 12.2 131 16.2 13.4 121 Zirkel 9340 28.4 26.2 108 30.5 28.5 107 ----- ----- Basin Index (%) 98 99 SWEETWATER Deer Park 9700 15.9 15.8 101 17.4 19.9 87 Larsen Creek 9000 8.7 11.5 76 12.9 -M * South Pass 9040 14.1 15.3 92 13.0 17.3 75 ----- ----- Basin Index (%) 91 82 LOWER N. PLATTE Casper Mtn. 7900 17.0 14.4 118 15.2 15.1 101 Laprele Creek 8375 9.6 9.4 102 11.5 12.5 92 Reno Hill 8400 16.0 14.0 114 18.6 15.6 119 Windy Peak 7900 9.2 7.7 119 11.0 10.6 104 ----- ----- Basin Index (%) 114 105 LARAMIE RIVER Brooklyn Lake 10240 24.2 22.0 110 23.0 21.1 109 Cinnabar Park 9574 19.3 21.3 91 22.2 24.1 92 Crow Creek 8330 9.1 6.9 132 14.4 10.9 132 Deadman Hill 10220 21.4 16.2 132 20.1 17.3 116 Rawah 9020 13.6 10.6 128 18.7 14.4 130 Roach 9700 17.7 16.6 107 20.0 19.1 105 ----- ----- Basin Index (%) 112 111 S. PLATTE Black Mountain 8920 13.7 -M * 17.1 -M * Crow Creek 8330 9.1 6.9 132 14.4 10.9 132 Deadman Hill 10220 21.4 16.2 132 20.1 17.3 116 ----- ----- Basin Index (%) 132 122 LITTLE SNAKE RIVER Battle Mountain 7440 10.1 9.3 109 15.3 15.0 102 Divide Peak 8880 19.2 20.0 96 22.3 21.4 104 Elk River 8700 16.9 19.1 88 18.4 20.0 92 Little Snake River 8915 23.0 25.5 90 30.5 29.9 102 Old Battle 10000 29.0 31.5 92 27.5 34.9 79 Sage Creek Basin 7850 14.6 11.6 126 12.5 14.6 86 Sandstone RS 8150 10.2 12.8 80 11.7 18.3 64 Whiskey Park 8950 27.1 27.5 99 27.0 27.9 97 ----- ----- Basin Index (%) 95 91 UPPER GREEN RIVER Big Sandy Opening 9080 11.0 12.7 87 11.5 13.2 87 Blind Bull Sum 8650 25.5 23.3 109 16.5 19.3 85 East Rim Divide 7930 9.4 10.2 92 10.9 11.7 93 Elkhart Park G.S. 9400 8.8 12.3 72 11.2 13.2 85 Gros Ventre Summit 8750 11.0 12.9 85 10.8 12.8 84 Gunsight Pass 9820 13.7 13.9 99 14.5 13.8 105 Kendall R.S. 7740 7.8 11.4 68 11.7 14.1 83 Loomis Park 8240 13.2 13.8 96 16.3 17.2 95 New Fork Lake 8340 8.2 10.3 80 11.1 10.7 104 Pocket Creek 9360 8.0 -M * 9.3 -M * Snider Basin 8060 13.9 12.3 113 14.0 14.1 99 Spring Creek Divide 9000 25.3 22.5 112 23.4 23.6 99 Triple Peak 8500 25.2 21.8 116 27.1 25.1 108 ----- ----- Basin Index (%) 98 95 LOWER GREEN RIVER Blacks Fork Jct 8870 11.2 -M * 12.3 -M * Buck Pasture 9700 14.5 -M * 17.3 -M * EF Blacks Fork GS 9360 9.5 -M * 10.7 -M * Hams Fork 7840 -M 10.5 * -M 11.3 * Hewinta 9519 12.0 10.9 110 13.6 14.0 97 Hickerson Park 9145 11.4 7.9 144 11.6 10.2 114 Hole-in-Rock 9150 8.3 7.0 119 11.6 9.7 120 Indian Creek 9425 23.1 24.7 94 18.7 22.4 83 Kelley R.S. 8180 13.4 14.6 92 15.4 18.0 86 Spirit Lk 10235 14.8 -M * 16.8 -M * Steel Creek Park 10200 16.8 15.8 106 18.7 16.5 113 ----- ----- Basin Index (%) 105 99 UPPER BEAR RIVER Bear River RS 8777 6.3 -M * 12.0 -M * Bug Lake 7950 17.7 18.5 96 19.1 19.3 99 Burts Miller Ranch 8000 2.5 -M * 5.9 -M * Chalk Creek #1 8993 20.1 24.4 82 22.4 25.1 89 Hayden Fork 9212 12.7 15.3 83 19.3 21.1 91 Kelley R.S. 8180 13.4 14.6 92 15.4 18.0 86 Lily Lake 9156 12.3 12.7 97 12.0 17.1 70 Monte Cristo 8960 27.1 27.8 97 27.7 25.8 107 Salt River Summit 7760 12.5 12.7 98 15.4 16.5 93 ----- ----- Basin Index (%) 92 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.