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 SATURDAY: APRIL 16 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 12.3 12.8 96 20.8 21.4 97 Black Bear 8170 30.4 36.7 83 35.6 39.1 91 Blind Bull Sum 8650 25.1 23.8 105 17.1 19.9 86 Cottonwood Creek 7670 19.8 19.6 101 27.4 25.3 108 East Rim Divide 7930 5.0 9.8 51 11.2 12.0 93 Grand Targhee 9260 42.8 41.2 104 33.0 32.2 102 Granite Creek 6770 10.6 12.0 88 18.2 20.0 91 Grassy Lake 7265 27.0 31.5 86 35.9 36.8 98 Gros Ventre Summit 8750 11.3 13.0 87 11.5 13.4 86 Gunsight Pass 9820 13.6 13.4 101 15.1 14.5 104 Lewis Lake Divide 7850 26.2 30.2 87 32.6 36.2 90 Phillips Bench 8200 21.9 26.0 84 27.1 28.7 94 Salt River Summit 7760 10.1 10.9 93 16.2 17.1 95 Snake River Station 6920 12.2 12.4 98 23.3 23.1 101 Spring Creek Divide 9000 25.7 23.4 110 24.3 24.4 100 Thumb Divide 7980 10.0 14.4 69 15.6 19.2 81 Togwotee Pass 9580 21.3 23.2 92 25.5 25.1 102 Two Ocean Plateau 9240 26.7 27.4 97 25.7 28.0 92 Willow Creek 8380 25.8 26.7 97 34.3 34.6 99 Younts Peak 8350 10.4 14.8 70 13.7 16.3 84 ----- ----- Basin Index (%) 92 95 MADISON-GALLATIN Black Bear 8170 30.4 36.7 83 35.6 39.1 91 Canyon 7870 9.4 12.4 76 13.5 16.7 81 Madison Plateau 7750 20.7 22.6 92 23.7 27.0 88 West Yellowstone 6700 5.7 8.2 70 14.2 14.6 97 Whiskey Creek 6800 12.1 14.8 82 17.5 20.8 84 ----- ----- Basin Index (%) 83 88 YELLOWSTONE Beartooth Lake 9360 17.6 22.6 78 17.8 20.4 87 Burnt Mtn 5880 .0 .0 * 10.9 13.6 80 Canyon 7870 9.4 12.4 76 13.5 16.7 81 Cole Creek 7850 10.6 15.7 68 -M 14.1 * Evening Star 9200 24.6 24.9 99 28.6 28.2 101 Fisher Creek 9100 28.0 32.0 88 26.6 32.7 81 Northeast Entrance 7350 3.3 7.8 42 11.8 12.7 93 Parker Peak 9400 20.4 20.6 99 21.1 18.3 115 Sylvan Lake 8420 15.7 20.1 78 24.2 23.0 105 Thumb Divide 7980 10.0 14.4 69 15.6 19.2 81 Two Ocean Plateau 9240 26.7 27.4 97 25.7 28.0 92 White Mill 8700 22.3 23.6 94 22.2 24.5 91 Wolverine 7650 5.4 8.3 65 11.9 12.6 94 ----- ----- Basin Index (%) 84 92 WIND RIVER Burroughs Creek 8750 7.9 -M * 12.5 -M * Castle Creek 8400 .0 -M * 6.5 -M * Cold Springs 9630 6.9 5.6 123 10.0 10.5 95 Deer Park 9700 15.8 16.0 99 17.9 20.9 86 Hobbs Park 10100 15.5 14.9 104 15.7 14.3 110 Kirwin 9550 9.7 10.0 97 12.7 12.1 105 Little Warm 9370 8.7 10.2 85 11.8 13.5 87 Owl Creek 8975 2.0 4.9 41 5.4 6.5 83 South Pass 9040 13.1 15.8 83 13.2 18.1 73 St. Lawrence Alt 8620 4.0 6.2 65 9.6 9.5 101 Togwotee Pass 9580 21.3 23.2 92 25.5 25.1 102 Townsend Creek 8700 9.2 9.9 93 12.8 12.8 100 ----- ----- Basin Index (%) 91 94 BIGHORN BASIN Bald Mtn. 9380 15.0 19.5 77 12.2 17.8 69 Bear Trap Meadow 8200 3.6 4.2 86 6.6 9.1 73 Bone Springs Div 9350 11.7 16.6 70 11.1 16.3 68 Grave Springs 8550 6.2 9.6 65 6.4 11.2 57 Kirwin 9550 9.7 10.0 97 12.7 12.1 105 Marquette 8760 6.2 -M * 11.3 -M * Middle Powder 7760 8.8 12.5 70 7.8 12.4 63 Owl Creek 8975 2.0 4.9 41 5.4 6.5 83 Powder River Pass 9480 7.2 10.1 71 8.8 13.3 66 Shell Creek 9580 11.8 15.4 77 10.6 14.5 73 Timber Creek 7950 4.1 5.1 80 10.8 8.0 135 ----- ----- Basin Index (%) 74 76 SHOSHONE RIVER Blackwater 9780 22.7 23.7 96 25.3 21.4 118 Evening Star 9200 24.6 24.9 99 28.6 28.2 101 Marquette 8760 6.2 -M * 11.3 -M * Sylvan Road 7120 .9 10.3 9 16.1 17.2 94 Younts Peak 8350 10.4 14.8 70 13.7 16.3 84 ----- ----- Basin Index (%) 80 101 POWDER RIVER Bear Trap Meadow 8200 3.6 4.2 86 6.6 9.1 73 Cloud Peak Reservoir 9860 10.3 15.4 67 12.5 14.3 87 Grave Springs 8550 6.2 9.6 65 6.4 11.2 57 Hansen Sawmill 8360 4.3 5.6 77 8.0 9.2 87 Middle Powder 7760 8.8 12.5 70 7.8 12.4 63 Powder River Pass 9480 7.2 10.1 71 8.8 13.3 66 Soldier Park 8720 .6 -M * 7.8 -M * ----- ----- Basin Index (%) 70 72 TONGUE RIVER Big Goose 7990 6.2 9.6 65 8.4 12.2 69 Bone Springs Div 9350 11.7 16.6 70 11.1 16.3 68 Burgess Junction 7880 8.3 12.2 68 9.3 13.1 71 Dome Lake 8880 7.4 12.0 62 9.5 14.4 66 Little Goose 8870 7.2 -M * 10.5 -M * Sucker Creek 8880 7.8 12.6 62 10.2 15.3 67 Tie Creek 6870 .0 4.7 0 8.7 12.4 70 ----- ----- Basin Index (%) 61 68 BELLE FOURCHE Cole Canyon 5910 .1 2.9 3 9.4 10.0 94 ----- ----- Basin Index (%) 3 94 CHEYENNE RIVER BASIN Blind Park 6890 .2 4.8 4 10.9 12.5 87 North Rapid Creek 6130 .0 5.1 0 8.6 10.4 83 ----- ----- Basin Index (%) 2 85 UPPER N. PLATTE Arapaho Ridge 10960 24.3 21.6 112 25.6 23.8 108 Blackhall Mtn 9820 31.5 -M * 31.1 -M * Columbine 9160 20.9 21.5 97 26.8 26.5 101 Divide Peak 8880 16.9 19.8 85 24.5 22.3 110 Joe Wright 10120 17.7 22.1 80 27.0 27.1 100 Laprele Creek 8375 7.4 8.9 83 11.5 13.3 86 Med Bow 10500 34.1 -M * 32.2 -M * North French Creek 10130 26.7 31.9 84 27.2 27.9 97 Never Summer 10280 21.4 20.6 104 18.5 -M * Old Battle 10000 31.0 32.2 96 29.4 36.3 81 Rawah 9020 11.8 9.4 126 19.3 15.2 127 Sage Creek Basin 7850 9.9 8.2 121 13.5 15.0 90 Sand Lake 10050 28.0 30.4 92 27.0 26.0 104 South Brush Creek 8440 8.7 10.6 82 15.2 16.0 95 Tower 10500 39.6 47.5 83 38.9 41.2 94 Webber Springs 9250 19.9 23.1 86 26.0 27.8 94 Willow Creek Pass 9540 16.8 12.7 132 17.1 14.0 122 Zirkel 9340 24.9 23.5 106 31.6 29.3 108 ----- ----- Basin Index (%) 95 100 SWEETWATER Deer Park 9700 15.8 16.0 99 17.9 20.9 86 Larsen Creek 9000 7.0 10.7 65 13.6 -M * South Pass 9040 13.1 15.8 83 13.2 18.1 73 ----- ----- Basin Index (%) 84 80 LOWER N. PLATTE Casper Mtn. 7900 15.4 14.4 107 15.3 16.1 95 Laprele Creek 8375 7.4 8.9 83 11.5 13.3 86 Reno Hill 8400 14.7 14.1 104 18.6 16.6 112 Windy Peak 7900 7.4 7.3 101 11.2 11.2 100 ----- ----- Basin Index (%) 100 99 LARAMIE RIVER Brooklyn Lake 10240 23.1 22.2 104 23.9 22.2 108 Cinnabar Park 9574 18.6 20.9 89 23.5 24.9 94 Crow Creek 8330 5.9 3.2 184 15.1 11.5 131 Deadman Hill 10220 20.8 16.5 126 20.6 18.3 113 Rawah 9020 11.8 9.4 126 19.3 15.2 127 Roach 9700 17.2 16.5 104 21.2 20.1 105 ----- ----- Basin Index (%) 110 110 S. PLATTE Black Mountain 8920 12.5 -M * 17.7 -M * Crow Creek 8330 5.9 3.2 184 15.1 11.5 131 Deadman Hill 10220 20.8 16.5 126 20.6 18.3 113 ----- ----- Basin Index (%) 136 120 LITTLE SNAKE RIVER Battle Mountain 7440 6.5 6.3 103 16.8 15.7 107 Divide Peak 8880 16.9 19.8 85 24.5 22.3 110 Elk River 8700 12.8 16.9 76 19.4 20.8 93 Little Snake River 8915 21.9 25.6 86 32.7 30.8 106 Old Battle 10000 31.0 32.2 96 29.4 36.3 81 Sage Creek Basin 7850 9.9 8.2 121 13.5 15.0 90 Sandstone RS 8150 7.7 11.4 68 12.9 19.0 68 Whiskey Park 8950 25.6 26.7 96 28.8 29.0 99 ----- ----- Basin Index (%) 90 94 UPPER GREEN RIVER Big Sandy Opening 9080 10.4 12.8 81 12.2 13.8 88 Blind Bull Sum 8650 25.1 23.8 105 17.1 19.9 86 East Rim Divide 7930 5.0 9.8 51 11.2 12.0 93 Elkhart Park G.S. 9400 8.7 12.0 72 11.8 13.8 86 Gros Ventre Summit 8750 11.3 13.0 87 11.5 13.4 86 Gunsight Pass 9820 13.6 13.4 101 15.1 14.5 104 Kendall R.S. 7740 -M 9.6 * 12.0 14.5 83 Loomis Park 8240 11.0 13.5 81 16.8 17.7 95 New Fork Lake 8340 5.7 9.4 61 11.3 11.1 102 Pocket Creek 9360 7.5 -M * 9.9 -M * Snider Basin 8060 10.2 11.4 89 14.3 14.5 99 Spring Creek Divide 9000 25.7 23.4 110 24.3 24.4 100 Triple Peak 8500 23.0 19.5 118 27.9 25.9 108 ----- ----- Basin Index (%) 92 95 LOWER GREEN RIVER Blacks Fork Jct 8870 9.3 -M * 12.8 -M * Buck Pasture 9700 11.1 -M * 17.8 -M * EF Blacks Fork GS 9360 7.6 -M * 11.4 -M * Hams Fork 7840 8.5 8.2 104 11.3 11.7 97 Hewinta 9519 7.2 9.4 77 14.3 14.6 98 Hickerson Park 9145 8.9 6.3 141 12.6 10.7 118 Hole-in-Rock 9150 5.6 6.6 85 12.8 10.3 124 Indian Creek 9425 22.2 23.7 94 19.2 23.2 83 Kelley R.S. 8180 12.1 13.5 90 16.2 18.6 87 Spirit Lk 10235 14.7 -M * 17.9 -M * Steel Creek Park 10200 17.0 16.1 106 19.4 17.3 112 ----- ----- Basin Index (%) 97 99 UPPER BEAR RIVER Bear River RS 8777 1.7 -M * 12.3 -M * Bug Lake 7950 16.3 18.8 87 20.3 20.0 102 Burts Miller Ranch 8000 .2 -M * 6.3 -M * Chalk Creek #1 8993 -M 24.9 * -M 26.2 * Hayden Fork 9212 8.6 13.4 64 19.8 21.9 90 Kelley R.S. 8180 12.1 13.5 90 16.2 18.6 87 Lily Lake 9156 10.0 12.1 83 14.4 17.9 80 Monte Cristo 8960 26.0 27.7 94 29.2 26.8 109 Salt River Summit 7760 10.1 10.9 93 16.2 17.1 95 ----- ----- Basin Index (%) 86 95 ----------------------------------------------------------------------------- -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.