Area Forecast Discussion
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000 FXUS61 KPBZ 172355 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 655 PM EST Fri Feb 17 2017 .SYNOPSIS...
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Dry conditions are largely expected until the next frontal system crosses the region Tuesday afternoon and Wednesday. Well above normal temperatures are expected through the end of next week.
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&& .NEAR TERM /UNTIL 6 AM SATURDAY MORNING/...
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Building high pressure will result in mainly clear skies overnight under increasing subsidence. Expect a wide diurnal range in temperatures as decoupled winds and lack of clouds will allow for strong radiational cooling overnight. However, cooling will not be quite as strong as last night as satellite imagery and webcams reveal snow cover largely gone across the forecast area.
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&& .SHORT TERM /6 AM SATURDAY MORNING THROUGH MONDAY/... Ridging should maintain dry weather through Saturday. An upper low across the Southern Plains is progged to open into a trough and track across the Mid Atlantic region Saturday night and early Sunday. This along with a weak surface trough approaching from the north, should result in an increase in clouds, along with rain chances S of I 70. A strong ridge returns later Sunday and Monday with dry weather expected. Temperatures are expected to average 15 to 20 degrees above seasonal levels. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... The ridge should maintain dry and warm weather through early next week. A weakening trough advancing from the Plains is progged for approach and passage late Tuesday, returning shower chances to the forecast. Weak ridging should maintain dry weather by mid week before another approaching Midwestern returns rain chances for the end of the week. Temperatures are expected to continue to average 15 to 20 degrees above seasonal levels. && .AVIATION /00Z SATURDAY THROUGH WEDNESDAY/...
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VFR and light wind can be expected overnight as high pressure completes a slide across the region. A weak shortwave crossing south of the region will allow for better mixing with intermittent gusts into the high teens through the day. Cloud coverage will increase later on Saturday with the best chance of any precipitation or MVFR CIG restrictions at KMGW. .OUTLOOK... The next chance for widespread restrictions will be with a Tuesday cold front.
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&& .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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