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Thunderstorms Wednesday, Heatwave Friday Through Sunday

We are heading into steamy conditions and you are certainly getting a bit of hint of that today. The humidity has risen from yesterday making it hot and uncomfortable. We are now going to take it up a few more notches on Wednesday with temperatures reaching into the 90s and dew points in the 70s. This will put us a steam bath atmosphere. Throw in the remnants of Tropical Storm Barry and an upper trough swinging east from the Great Lakes and you have the recipe for severe weather late Wednesday and Wednesday night. The potential exists for some of these thunderstorms to produce heavy rain and flash flooding so the weather prediction center has much of our area in a marginal to slight risk for excessive rainfall.

The potential exists for several inches of rain in some heavier thunderstorms impacting the area. Given the slow moving nature of this weather system, it could make for some rough conditions late tomorrow into Wednesday night. The satellite picture from this afternoon shows the remnants of Barry as a large swirl of clouds and the upper trough to the northwest that is sweeping it eastward like a slow moving broom.

Meanwhile the latest satellite view shows skies still clear over us with clouds to the northeast and the moisture from Barry spreading clouds into the Central Appalachians. We have no weather issues to worry about through tonight other than the fact that tonight will be very warm and humid with most lows in the upper 60s and lower 70s. Radars are quiet this afternoon and we see no issues into Wednesday midday. Some pop up storms are showing up in the Western half of Pennsylvania southward but we don't think those make it here.

Wednesday will be steamy with highs into the 90s with high humidity. The GFS depiction of the radar shows thunderstorms moving through tomorrow evening and still lingering into Thursday morning. Other models take longer to bring thunderstorms here and hold them back until after dark Wednesday. My approach is all about the risk zones and we will let the radars tell us tomorrow what we wind up getting.

As far as the heatwave that is coming for the weekend you can read more about that and how long the extreme heat will last by going to METEOROLOGISTJOECIOFFI.COM

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