Area Forecast Discussion
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000 FXUS61 KPBZ 280405 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 1205 AM EDT Wed Jun 28 2017 .SYNOPSIS...
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High pressure should maintain dry weather today. An approaching front will return shower and thunderstorm chances to the area late this week.
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&& .NEAR TERM /THROUGH TODAY/...
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Dry weather and mostly clear skies are expected through today as high pressure slides across the region. Temperatures are expected to continue several degrees below average, though highs should be a few degrees warmer than yesterday.
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&& .SHORT TERM /TONIGHT THROUGH 6 PM THURSDAY/...
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Cloud coverage will increase Wednesday night ahead of an approaching shortwave in increasingly zonal flow. The mid-level disturbance will be over the Great Lakes by Thursday afternoon which will likely lead to the development of showers and storms. Have included PoPs on Thursday, generally north of PIT, with likely PoPs over the far north. Temperatures on Thursday will continue to trend up, and winds will be gusty out of the southwest as the pressure gradient tightens.
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&& .LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/... Models are in general agreement in development of a Mississippi Valley to Eastern CONUS trough this weekend, although actual amplitude and shortwaves-in-flow continue detail and timing discrepancies. The POPS and temperature forecasts are thus close to climo as per a blend of guidance. && .AVIATION /04Z WEDNESDAY THROUGH SUNDAY/... VFR will dominate over the next 24 hours. Cannot rule out some patchy fog very close to the rivers late tonight given the cool temperatures, but due to low dewpoints do not currently think it will be more widespread. Otherwise, the remaining cumulus will dissipate this evening, with mostly clear skies and light winds expected through tomorrow. .OUTLOOK... Restriction chances will increase during the latter half of the week with the approach and passage of a cold front. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. && $$

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