The Pittsburgh area braces for a wet day as the latest weather forecasts widespread rain returning this morning and intensifying in the afternoon. According to
the National Weather Service
Pittsburgh PA Area Forecast Discussion, with a 95-100% likelihood of at least 0.10 inches of rain, it’s a high-confidence prediction for those reaching for umbrellas and raincoats.
Reportedly, dewpoints in the mid 20s could initially hinder the anticipated rainfall, moisture streaming in from the Gulf should amass dense mid/upper-level clouds, ensuring the wet weather takes hold, the forecast discussion stated. An encroaching low-pressure system from the Great Lakes paired with the southwesterly flow will bolster chances for noticeably higher precipitation levels that have been elusive in recent events. Expecting scattered light showers to begin spreading across the region this morning, the momentum of steady rain gaining ground in the afternoon as additional factors like a 45-55 kt low-level jet come into play.
Aviation prospects for the day are gloomy; arriving low pressure will cast widespread rain and accompanying restrictions throughout the area, a dreaded scenario for travelers and pilots alike. As the saturation at lower levels is achieved, and the ensemble probability suggests MVFR CIG/VIS in the rain as early as 12z at ZZV and as late as 19z at LBE, the 90%+ chance of MVFR conditions lays a dismal tarp over the day’s flight plans.
Looking ahead, Monday might offer a pause, albeit a temporary one, as a secondary trough and cold front expectedly stir up showers once again mainly north of Pittsburgh, though odds for this remain mired in a certain degree of uncertainty; the speed and depth of the upper wave will dictate the possibility of lingering precipitation into the night, leaving Tuesday and Wednesday dry and cooled by building high pressure, according to NWS’s further outlook. Meanwhile, long-term forecasts hint at rain chances increasing again Wednesday night into Thursday, with high pressure slated to bring drier conditions by Friday. The weekend looks primed to offer respite and perhaps a few degrees above the average warmth.
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