Area Forecast Discussion
Issued by NWS State College, PA

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000 FXUS61 KCTP 240935 AFDCTP Area Forecast Discussion National Weather Service State College PA 535 AM EDT Thu May 24 2018 .SYNOPSIS... High pressure over the Upper Great Lakes will build southeast toward the region and will bring mainly clear skies, seasonably cool mornings and warm afternoons to the region for the next couple of days. Look for humidity and the chance for showers and thunderstorms to increase as we head through the Memorial Day weekend. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... Mostly clear skies previling across the region this morning. GOES_16 night-time microphysics imagery showing river valley fog across western PA and extending into the NC mountains. Most of central and southeast PA are fog free however. High pressure in control Thursday with temperatures warming into the upper 70s to lower 80s under full sunshine. Highest pressures still north and west keeping the air rather dry as well. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/... High pressure moves slowly eastward tonight and Friday, eventually bringing a return southwest flow to central and western portions of PA Fri afternoon. A slight uptick in humidity will be seen over western areas, and could lead to an isolated late day shower or thunderstorm over the WC mountains and Laurels. Otherwise, fair and warm conditions will prevail with highs Friday afternoon ranging mostly in the lower to middle 80s. && .LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/... Look for high pressure and dry weather through Friday with seasonable morning lows and warm afternoons. Saturday is trending drier and will probably be the warmest day of the holiday weekend with most locations in the 80s. 12Z mid to long range models continue to show an approach trough that will swing through the great lakes. With streaming southwesterly moisture and max temps in the 80s, Saturday afternoon could see some convection. Sunday into Memorial day could continue to see more unsettled, humid and a little cooler weather. While there will be pops in the forecast, still uncertain exactly how wet things will turn out. && .AVIATION /10Z THURSDAY THROUGH MONDAY/...
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Some ground fog just behind the office here. Had fog for a short time at BFD. 09Z TAFS updated for this and sent. Earlier discussion below. 06Z TAFS sent. VFR conditions for the next several days as high pressure moves across the region. Next possibility for restrictions will come Fri night over the west as moisture increases in SW flow. The remainder of the weekend will bring scattered convection and mainly localized restrictions. Outlook... Fri...VFR/no sig wx expected. Sat-Mon...Mainly VFR with scattered showers/thunderstorms.
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&& .CTP WATCHES/WARNINGS/ADVISORIES... None. && $$ SYNOPSIS...DeVoir/Lambert NEAR TERM...DeVoir/Lambert SHORT TERM...Ross/DeVoir LONG TERM...Ross/Gartner AVIATION...Martin/RXR

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