Area Forecast Discussion
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000 FXUS61 KPBZ 230404 AFDPBZ Area Forecast Discussion National Weather Service Pittsburgh PA 1204 AM EDT SAT JUL 23 2016 .SYNOPSIS... Hot and humid weather is forecast for into early next week along with intervals of scattered thunderstorms. && .NEAR TERM /UNTIL 6 AM THIS MORNING/...
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Skies were further reduced for the rest of the night with only a few transient clouds likely to pass through Ohio in the next few hours. Otherwise, with dewpoints remaining close to 70F overnight, local fog will be likely toward morning, particularly in the river valleys. This should mix out quickly after sunrise, however. Fries
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&& .SHORT TERM /6 AM THIS MORNING THROUGH MONDAY/... We will remain in northwest flow situated between the broad ridge/trough pattern across the central and eastern CONUS. Yet another shortwave digging through the base of the trough over NY and New England will push a front across the region on Saturday. This may be enough to initialize some isolated thunderstorms in the afternoon, especially where low levels remain moist - which appears to be along the I-70 corridor. More notable will be the temperatures tomorrow, which should surpass 90. With dewpoints staying in the low 70`s over Ohio, heat indices will approach 100. Thus, a heat advisory has been issued for several of counties in Ohio. With the back-door front approaching further north, dewpoints may fall off allowing for temperatures to approach 90 but allowing heat indices to stay below criteria. Will allow future shifts to assess the potential. Surface high pressure should keep things quiet on Sunday until the approach of a trough and associated front late Sunday night/ Monday morning. Very warm temperatures and humid conditions will continue until this front approaches. Some timing differences preclude adding likely pops in the forecast for monday at this time. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... Generally zonal flow is progged through the long term period. Weak disturbances embedded in the flow should bring periodic shower and thunderstorm chances to the region, especially for the second half of the week. Temperatures are expected to remain several degrees above the seasonal averages. && .AVIATION /04Z SATURDAY THROUGH WEDNESDAY/... MVFR fog is possible late tonight with a favorable hydrolapse and minimal cloud coverage allowing for a decent amount of radiational cooling. Any development quickly mix out after sunrise with VFR conditions thereafter. An isolated storm will be possible south of PIT along a lingering surface boundary. .OUTLOOK /SATURDAY THROUGH WEDNESDAY/... Restrictions will be possible late Sunday and Monday with the approach and passage of a weak cold front. && .PBZ WATCHES/WARNINGS/ADVISORIES...
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MD...None. OH...Heat Advisory from noon today to 8 PM EDT this evening FOR OHZ048-057>059-068-069. PA...None. WV...Heat Advisory from noon today to 8 PM EDT this evening FOR WVZ004-012.
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