Residents in Pittsburgh should keep their eyes on the sky today, as the National Weather Service is predicting a potentially stormy scenario. Showers and thunderstorms are on the return, with a slow-moving cold front trailing through the area, according to the National Weather Service Pittsburgh PA. "A few storms could be strong to severe," their forecast discussion states, with the region sitting under a Marginal Risk of severe weather—level 1 out of 5.
Today's forecast includes not just rain but also the possibility of intense storms. A vorticity maximum, riding the edge of a strong low-level jet, has already started to spur shower and thunderstorm development this morning. The expectation is to stir mainly north of Pittsburgh. Still, as the day progresses and the cold front moves southeastward, we could see additional development along and ahead of the front, according to the National Weather Service. Those in the area could carry an umbrella.
While the morning has started warm, with temperatures rising significantly above the April average, the instability that accompanies the warmth may fuel severe weather conditions. Strong shear will be in place, enhanced by the mid-level jet, according to the weather service, which notes that there is potential for damaging winds and hail within these storms. As the front approaches, instability is projected to diminish, especially south of the PA/WV border, thereby reducing chances for robust storms later on.
The severe weather risk is expected to dissipate by early evening as the front quickly advances. A dry pressure ridge is forecast to settle in on Sunday as the front moves south, bringing a much-welcome dry spell to Pittsburgh. "Dry weather is expected on Sunday," confirms the forecast discussion, "as the front moves south of the region, and ridging builds in." For those looking to enjoy a peaceful day outdoors, Sunday might be their best bet.
Looking towards the start of the workweek, more showers and potential thunderstorms are predicted for Sunday night and Monday. "The area will be in the warm sector again on Monday," says the National Weather Service, "ahead of an approaching shortwave trough and surface cold front." This suggests that residents should remain alert for more unsettled weather. Aviators, too, should plan accordingly, as VFR conditions on Saturday might be followed by potential showers, restrictions, and possible thunderstorms as the weekend closes.
For those craving consistent sunshine, the long-term forecast suggests that dry and warm weather will persist through midweek, although there is a chance of showers returning by late week.
