Wednesday, September 14, 2011

    You're lookin' at the surface map for Thursday night, courteys of HPC

    First & weaker of two cold frontal boundaries will dip southeastward into the Appalachians today. Ahead of the front scattered rain showers & isolated thunder may develop across northern West Virginia, PA this afternoon. A stronger reinforcing cold front will push through later tonight into Thursday. Expect better rain coverage Thursday morning and a brisk Thursday night. Massive high pressure will provide cool dry weather late Thursday & Friday. We have a nice weekend on tap thanks to that 1028 high pressure!

    Today & tonight...warm air still lingering in the mountain state this afternoon. Temps will mange a respectable 80. Mostly clear skies http://aviationweather.gov/adds/satellite/displaySat.php?region=DTW&isingle=single&itype=vis giving way to increasing cloud coverage across Ohio & northern West Virginia this afternoon. Regional radar http://weather.unisys.com/radar/rcm_rad.php?image=rad&inv=0&t=l&region=at depicts isolated thunder cell activity crossing eastern Ohio & brushing the northern West Virginia panhandle. A few scattered rain showers may break out across our northern bow this afternoon/early evening. Initial frontal boundary will have crossed the mountains by 8 o'clock tonight. However, our evening rain chances seem rather meager until that second frontal boundary provides deeper moisture & better dynamics late tonight into early Thursday.

    So expect mostly cloudy skies, scattered rain showers, isolated thunder & lows in the upper 50s tonight.

    Thursday will be noticeably cooler with rain showers tapering off to light drizzle by mid-morning. Rainfall amounts for our area & across the east will less than half an inch. A large area high pressure behind the front will usher in cool, dry over the Great Lakes & Mid-Atlantic states Thursday. Clearing skies along with cold air mixing into our area will put overnight lows Thursday night in the low 40s. Higher elevations could easily see lows in the upper 30s if skies clear well enough. http://weather.unisys.com/gfsx/gfsx.php?inv=0&plot=850&region=us&t=l

    That large 1028 high pressure will keep mainly sunny skies, mild temps & dry forecast for Friday, Saturday & Sunday, especially for northern West Virginia. Warmer air will gradually rebound, into southern West Virginia first. Highs will eventually reach the low to mid 70s as that high pressure center slides eastward. The forecast for Monday looks good with temperatures back to normal. Next rainmaker will arrive Tuesday/Wednesday.