Area Forecast Discussion
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000 FXUS61 KPBZ 211742 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 142 PM EDT Sun Aug 21 2016 .SYNOPSIS...
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High pressure will gain control tonight resulting in drier, and more comfortable conditions through the first half of the week.
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&& .NEAR TERM /THROUGH MONDAY/...
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Only a few showers lingering this afternoon, primarily along the higher terrain of the southeast. Edge of mid-level cloud deck is progressing quickly to the east and should push through the bulk of area by this evening. Lower dewpoints are lagging behind the cold front a little, but some western observations are already dipping below the 60 degree mark. This fresher air drawn in from the northwest will allow temperatures to drop to near average overnight. The upper-level trough axis will push through tonight. Northwest flow over the Great Lakes, and modest cold advection, may promote a few isolated showers overnight north of I-80. These will end by sunrise. Expect plenty of sunshine Monday as high pressure regains control of the area.
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&& .SHORT TERM /MONDAY NIGHT THROUGH TUESDAY/...
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Tuesday will again feature plenty of sunshine and comfortable conditions, as surface high pressure crosses. Below normal temperatures on Monday, will rise closer to climatology on Tuesday as the air mass modifies and mid-level heights rise.
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&& .LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/... Dry weather continues through Wednesday with the passage of the mid-level trough axis. Humidity increases again Thursday in increasing southwesterly flow. Shower and thunderstorm chances return Thursday night ahead of the next front. The boundary passes Friday or Friday night with continued rain chances. Dry weather and seasonable temperatures are expected for the end of the period. && .AVIATION /18Z SUNDAY THROUGH FRIDAY/...
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With the cold front pushing east of the area and drier air moving in, ceilings are gradually lifting. The back edge of the mid-level cloud deck is moving through eastern Ohio and will creep through western Pennsylvania by this evening. West winds will occasionally gust to near 15kts through the evening before subsiding tonight. Additional restrictions early Monday morning as low-level moisture and a passing upper trough may develop MVFR/IFR stratus. Still some question as to how far south these low clouds are able to reach. Opted to keep a scattered stratus deck in for KZZV/KMGW in the pre-dawn. .OUTLOOK /SUNDAY NIGHT THROUGH THURSDAY/... Outside of pre-dawn fog possible in the middle of the week. The next chance for restrictions will come with another front Thursday into Friday.
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&& .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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