Area Forecast Discussion
Issued by NWS Pittsburgh, PA

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000 FXUS61 KPBZ 130638 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 238 AM EDT Thu May 13 2021 .SYNOPSIS... Cold temperature will moderate toward weeks end, but mostly dry weather will continue. The next organized rainfall won`t arrive till Monday. && .NEAR TERM /THROUGH TODAY/... A clear sky and dry airmass with diminished wind will result in a decent radiation night with lows approximately 15 degrees under the norms anticipated. An areawide frost advisory, with a freeze warning for the higher elevations of eastern Tucker county will remain in place through mid morning. The day ahead will showcase another dry day with ample sunshine and continued temperatures moderation. A weak passing trough to the north may create a few passing showers along the ridges but the very dry low levels will likely keep rainfall out of the forecast area. && .SHORT TERM /TONIGHT THROUGH FRIDAY NIGHT/... The region will remain underneath upper troughing and sfc high pressure through Friday. Gradual temperature moderation is expected each day, but readings will remain below climo. Rain is possible in the Allegheny Mountains on Friday with a passing shortwave trough. Instability will be minimal but should be enough to spawn some isolated to scattered showers mainly along the ridges to the east. && .LONG TERM /SATURDAY THROUGH WEDNESDAY/... Weak passing shortwaves within NW flow may create low chance precipitation through the weekend. Otherwise, high pressure should maintain dry conditions with slowly rising temperature readings. The beginning of next week will feature the ridge over the south shift east allowing for moist return flow into the Middle Atlantic States. Here, a series of passing shortwave troughs will bring unsettled weather to the forecast area from Monday through Wednesday with the potential of showers and thunderstorms each day. Temperatures return to normal values but active weather returns too. && .AVIATION /07Z THURSDAY THROUGH MONDAY/...
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High pressure will maintain VFR through the TAF period. Wind will continue to go calm until mixing resumes during the daylight hours. Northerly wind will gust 15-20 knots in the afternoon with a 6-8kft CU field. .Outlook... The next chc for restrictions looks to hold off until next week.
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&& .PBZ WATCHES/WARNINGS/ADVISORIES... PA...Frost Advisory until 8 AM EDT this morning for PAZ007>009-013>016- 020>023-029-031-073>076. OH...Frost Advisory until 8 AM EDT this morning for OHZ039>041-048>050- 057>059-068-069. WV...Frost Advisory until 8 AM EDT this morning for WVZ001>004-012-021- 509>513. Freeze Warning until 8 AM EDT this morning for WVZ514. && $$

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