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: APRIL 12 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 12.9 14.4 90 20.3 21.1 96 Black Bear 8170 30.6 36.7 83 34.4 38.6 89 Blind Bull Sum 8650 25.3 23.6 107 16.7 19.6 85 Cottonwood Creek 7670 19.3 20.5 94 26.0 24.9 104 East Rim Divide 7930 6.4 10.1 63 10.9 11.8 92 Grand Targhee 9260 42.2 40.0 106 32.1 31.3 103 Granite Creek 6770 11.1 13.3 83 17.1 19.7 87 Grassy Lake 7265 28.4 31.4 90 35.3 36.2 98 Gros Ventre Summit 8750 10.6 12.8 83 10.9 13.1 83 Gunsight Pass 9820 13.1 13.7 96 14.7 14.1 104 Lewis Lake Divide 7850 26.9 30.2 89 32.1 35.8 90 Phillips Bench 8200 21.4 25.9 83 26.2 28.4 92 Salt River Summit 7760 10.7 12.1 88 15.5 16.8 92 Snake River Station 6920 12.7 13.9 91 22.9 22.7 101 Spring Creek Divide 9000 25.3 22.9 110 23.6 24.0 98 Thumb Divide 7980 11.1 14.6 76 15.3 18.8 81 Togwotee Pass 9580 20.4 22.7 90 24.7 24.6 100 Two Ocean Plateau 9240 26.6 26.7 100 25.1 27.5 91 Willow Creek 8380 25.9 27.5 94 32.6 34.0 96 Younts Peak 8350 11.6 14.5 80 13.6 16.0 85 ----- ----- Basin Index (%) 92 94 MADISON-GALLATIN Black Bear 8170 30.6 36.7 83 34.4 38.6 89 Canyon 7870 9.6 12.3 78 13.3 16.4 81 Madison Plateau 7750 20.8 22.2 94 22.6 26.5 85 West Yellowstone 6700 6.4 8.6 74 13.3 14.2 94 Whiskey Creek 6800 12.4 14.6 85 16.6 20.4 81 ----- ----- Basin Index (%) 85 86 YELLOWSTONE Beartooth Lake 9360 17.1 21.8 78 17.9 20.0 90 Burnt Mtn 5880 .0 2.4 0 10.9 13.3 82 Canyon 7870 9.6 12.3 78 13.3 16.4 81 Cole Creek 7850 10.8 15.3 71 12.0 13.5 89 Evening Star 9200 24.5 24.2 101 28.2 27.7 102 Fisher Creek 9100 27.8 31.6 88 26.2 32.0 82 Northeast Entrance 7350 4.4 8.5 52 11.6 12.4 94 Parker Peak 9400 20.4 20.1 101 21.0 17.9 117 Sylvan Lake 8420 15.7 19.8 79 23.3 22.6 103 Thumb Divide 7980 11.1 14.6 76 15.3 18.8 81 Two Ocean Plateau 9240 26.6 26.7 100 25.1 27.5 91 White Mill 8700 21.9 23.1 95 21.8 24.0 91 Wolverine 7650 7.4 9.2 80 12.0 12.3 98 ----- ----- Basin Index (%) 86 92 WIND RIVER Burroughs Creek 8750 8.8 -M * 12.7 -M * Castle Creek 8400 .8 -M * 6.4 -M * Cold Springs 9630 7.7 6.1 126 10.1 10.3 98 Deer Park 9700 15.5 16.2 96 17.6 20.5 86 Hobbs Park 10100 15.5 14.8 105 15.6 14.0 111 Kirwin 9550 10.0 9.8 102 12.6 11.8 107 Little Warm 9370 8.4 10.3 82 11.5 13.1 88 Owl Creek 8975 3.5 5.6 62 5.5 6.3 87 South Pass 9040 13.7 15.8 87 13.1 17.8 74 St. Lawrence Alt 8620 5.4 6.8 79 9.5 9.3 102 Togwotee Pass 9580 20.4 22.7 90 24.7 24.6 100 Townsend Creek 8700 10.1 10.0 101 12.7 12.6 101 ----- ----- Basin Index (%) 93 95 BIGHORN BASIN Bald Mtn. 9380 14.2 19.3 74 12.1 17.4 70 Bear Trap Meadow 8200 5.5 4.6 120 6.6 8.8 75 Bone Springs Div 9350 11.8 17.0 69 10.8 15.9 68 Grave Springs 8550 7.0 9.6 73 6.4 11.0 58 Kirwin 9550 10.0 9.8 102 12.6 11.8 107 Marquette 8760 6.8 -M * 11.0 -M * Middle Powder 7760 9.9 12.4 80 7.9 12.0 66 Owl Creek 8975 3.5 5.6 62 5.5 6.3 87 Powder River Pass 9480 7.5 10.3 73 8.7 13.0 67 Shell Creek 9580 11.3 15.6 72 10.3 14.1 73 Timber Creek 7950 5.0 5.1 98 10.5 7.6 138 ----- ----- Basin Index (%) 78 78 SHOSHONE RIVER Blackwater 9780 22.3 23.3 96 24.8 20.9 119 Evening Star 9200 24.5 24.2 101 28.2 27.7 102 Marquette 8760 6.8 -M * 11.0 -M * Sylvan Road 7120 2.7 10.4 26 15.3 16.9 91 Younts Peak 8350 11.6 14.5 80 13.6 16.0 85 ----- ----- Basin Index (%) 84 100 POWDER RIVER Bear Trap Meadow 8200 5.5 4.6 120 6.6 8.8 75 Cloud Peak Reservoir 9860 10.7 15.3 70 12.5 13.8 91 Grave Springs 8550 7.0 9.6 73 6.4 11.0 58 Hansen Sawmill 8360 5.6 6.1 92 7.8 8.9 88 Middle Powder 7760 9.9 12.4 80 7.9 12.0 66 Powder River Pass 9480 7.5 10.3 73 8.7 13.0 67 Soldier Park 8720 2.9 -M * 7.6 -M * ----- ----- Basin Index (%) 79 74 TONGUE RIVER Big Goose 7990 7.0 9.9 71 8.4 12.0 70 Bone Springs Div 9350 11.8 17.0 69 10.8 15.9 68 Burgess Junction 7880 8.6 12.2 70 9.4 12.8 73 Dome Lake 8880 8.3 11.9 70 9.3 14.1 66 Little Goose 8870 7.7 -M * 10.3 -M * Sucker Creek 8880 8.5 12.5 68 10.3 14.9 69 Tie Creek 6870 .4 5.2 8 8.6 12.1 71 ----- ----- Basin Index (%) 65 69 BELLE FOURCHE Cole Canyon 5910 1.4 4.1 34 9.5 9.8 97 ----- ----- Basin Index (%) 34 97 CHEYENNE RIVER BASIN Blind Park 6890 .0 6.2 0 10.6 12.3 86 North Rapid Creek 6130 .6 6.0 10 8.3 10.3 81 ----- ----- Basin Index (%) 5 84 UPPER N. PLATTE Arapaho Ridge 10960 24.3 21.4 114 24.6 23.4 105 Blackhall Mtn 9820 31.1 -M * 30.3 -M * Columbine 9160 22.7 22.8 100 26.3 26.0 101 Divide Peak 8880 18.4 20.3 91 23.7 21.9 108 Joe Wright 10120 17.9 21.9 82 26.2 26.5 99 Laprele Creek 8375 8.7 9.4 93 11.6 12.9 90 Med Bow 10500 35.9 -M * 31.6 -M * North French Creek 10130 26.8 31.0 86 26.4 27.4 96 Never Summer 10280 20.8 20.5 101 18.0 -M * Old Battle 10000 30.6 32.0 96 29.1 35.6 82 Rawah 9020 12.1 10.2 119 18.8 14.9 126 Sage Creek Basin 7850 11.8 10.3 115 13.0 14.9 87 Sand Lake 10050 27.7 30.0 92 26.5 25.5 104 South Brush Creek 8440 9.6 11.5 83 14.8 15.7 94 Tower 10500 39.5 47.1 84 38.2 40.5 94 Webber Springs 9250 21.3 23.4 91 25.6 27.3 94 Willow Creek Pass 9540 16.3 12.5 130 16.3 13.8 118 Zirkel 9340 26.5 25.1 106 30.8 29.1 106 ----- ----- Basin Index (%) 96 99 SWEETWATER Deer Park 9700 15.5 16.2 96 17.6 20.5 86 Larsen Creek 9000 7.8 11.1 70 13.3 -M * South Pass 9040 13.7 15.8 87 13.1 17.8 74 ----- ----- Basin Index (%) 86 80 LOWER N. PLATTE Casper Mtn. 7900 16.3 14.5 112 15.1 15.6 97 Laprele Creek 8375 8.7 9.4 93 11.6 12.9 90 Reno Hill 8400 15.2 14.2 107 18.6 16.1 116 Windy Peak 7900 8.5 7.5 113 11.0 10.9 101 ----- ----- Basin Index (%) 107 101 LARAMIE RIVER Brooklyn Lake 10240 23.8 22.3 107 23.6 21.7 109 Cinnabar Park 9574 18.9 21.4 88 23.0 24.8 93 Crow Creek 8330 7.4 5.9 125 14.7 11.3 130 Deadman Hill 10220 20.9 16.6 126 20.1 17.9 112 Rawah 9020 12.1 10.2 119 18.8 14.9 126 Roach 9700 17.2 16.5 104 20.4 19.7 104 ----- ----- Basin Index (%) 108 109 S. PLATTE Black Mountain 8920 12.9 -M * 17.3 -M * Crow Creek 8330 7.4 5.9 125 14.7 11.3 130 Deadman Hill 10220 20.9 16.6 126 20.1 17.9 112 ----- ----- Basin Index (%) 126 119 LITTLE SNAKE RIVER Battle Mountain 7440 7.9 8.0 99 16.1 15.3 105 Divide Peak 8880 18.4 20.3 91 23.7 21.9 108 Elk River 8700 13.9 18.2 76 18.6 20.5 91 Little Snake River 8915 22.8 26.0 88 31.9 30.6 104 Old Battle 10000 30.6 32.0 96 29.1 35.6 82 Sage Creek Basin 7850 11.8 10.3 115 13.0 14.9 87 Sandstone RS 8150 8.9 12.5 71 12.3 18.7 66 Whiskey Park 8950 26.1 27.6 95 27.8 28.4 98 ----- ----- Basin Index (%) 91 93 UPPER GREEN RIVER Big Sandy Opening 9080 9.7 12.9 75 11.6 13.5 86 Blind Bull Sum 8650 25.3 23.6 107 16.7 19.6 85 East Rim Divide 7930 6.4 10.1 63 10.9 11.8 92 Elkhart Park G.S. 9400 8.5 12.3 69 11.3 13.5 84 Gros Ventre Summit 8750 10.6 12.8 83 10.9 13.1 83 Gunsight Pass 9820 13.1 13.7 96 14.7 14.1 104 Kendall R.S. 7740 -M 10.7 * 11.8 14.3 83 Loomis Park 8240 11.3 13.7 82 16.6 17.4 95 New Fork Lake 8340 6.5 9.9 66 11.1 10.9 102 Pocket Creek 9360 7.3 -M * 9.5 -M * Snider Basin 8060 12.2 12.2 100 14.1 14.3 99 Spring Creek Divide 9000 25.3 22.9 110 23.6 24.0 98 Triple Peak 8500 23.6 20.7 114 27.3 25.5 107 ----- ----- Basin Index (%) 93 94 LOWER GREEN RIVER Blacks Fork Jct 8870 10.1 -M * 12.4 -M * Buck Pasture 9700 12.2 -M * 17.4 -M * EF Blacks Fork GS 9360 8.6 -M * 11.1 -M * Hams Fork 7840 -M 9.5 * -M 11.5 * Hewinta 9519 8.6 10.5 82 13.9 14.4 97 Hickerson Park 9145 10.3 7.5 137 12.2 10.6 115 Hole-in-Rock 9150 7.8 7.1 110 12.4 10.1 123 Indian Creek 9425 21.9 24.6 89 18.7 22.8 82 Kelley R.S. 8180 12.2 14.2 86 15.6 18.3 85 Spirit Lk 10235 14.6 -M * 17.5 -M * Steel Creek Park 10200 16.9 16.1 105 19.0 17.0 112 ----- ----- Basin Index (%) 97 98 UPPER BEAR RIVER Bear River RS 8777 3.4 -M * 12.0 -M * Bug Lake 7950 16.1 19.1 84 19.3 19.7 98 Burts Miller Ranch 8000 .1 -M * 5.9 -M * Chalk Creek #1 8993 18.4 24.7 74 22.3 25.8 86 Hayden Fork 9212 9.8 14.7 67 19.4 21.5 90 Kelley R.S. 8180 12.2 14.2 86 15.6 18.3 85 Lily Lake 9156 10.7 12.7 84 14.0 17.6 80 Monte Cristo 8960 25.3 27.8 91 27.8 26.5 105 Salt River Summit 7760 10.7 12.1 88 15.5 16.8 92 ----- ----- Basin Index (%) 82 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.