Area Forecast Discussion
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394 FXUS61 KPBZ 290032 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 832 PM EDT Tue Mar 28 2017 .SYNOPSIS...
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High pressure will bring dry weather for Wednesday before another low pressure system brings rain into the region beginning late Thursday.
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&& .NEAR TERM /THROUGH WEDNESDAY/...
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Cold front is through the area and showers have been pushed off to the east. A drier air mass will filter in tonight on northwest flow. However, clouds are expected to linger through the night and into tomorrow morning as moisture will remain trapped underneath a subsidence inversion. Upped the cloud cover grids a bit more from previous, and have removed mention of precipitation. Only minor tweaks to overnight temperatures based on a near term guidance blend. Still expect clouds to break during the morning once mixing gets going, leading to a mostly sunny Wednesday afternoon with fairly seasonable temperatures.
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&& .SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/... Computer models are still struggling somewhat with the arrival time for precipitation on Thursday. Attempted to take a middle of the road approach, keeping conditions dry Thursday morning, introducing the chance of showers Thursday afternoon, and bringing in widespread showers Thursday night. Increased pops to categorical Friday with all models in good agreement showing rain across much of the eastern United States. After seasonal temperatures Wednesday night and Thursday, both highs/lows should be about five degrees warmer over the next 24 hours. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... As low pressure moves offshore the East Coast Friday night, showers should come to an end Saturday morning. High pressure will bring quiet weather through the second half of the weekend before another system brings the chance for rain Monday into Tuesday. Seasonal temperatures are expected for the period. && .AVIATION /01Z WEDNESDAY THROUGH SUNDAY/... Low level moisture behind exiting low pressure is expected to continue the MVFR cigs tonight. A lowering temperature inversion could cause cigs to lower to IFR for a period, mainly from PIT N. Building high pressure and dry air mixing should return VFR to the area by late morning/early afternoon Wednesday. Outlook... Restrictions are likely again from late Thursday through Saturday as another broad low affects the Upper Ohio Valley. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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