MORE THUNDERSTORM COVERAGE THIS EVENING

Tonight, our area will see more thunderstorms making it through Philadelphia.

Last night’s storms did hit a wall of stability as they attempted to move into Philadelphia.  Areas north and west, especially upper Montgomery county and parts of Bucks/Lehigh  county saw some heavy storms.

But most of us had just light showers, just remnants of the storms as the thunderstorms ran into a large ‘unfavorable’ environment of “convective inhibition”.

Today, Wednesday, things look a little different as a stronger upper air disturbance approaches from the west—

GFS 5 PM forecast – 500mb Vorticity    (Click on image for a larger view.)

These will likely meet a similar wall of stability, but the strength of today’s dynamics should overcome the wall of convective inhibition.

Very scattered storms may develop ahead of the disturbance as early 2 PM, but the main activity is expected between 5 PM and 9 PM.

NBM  1 Hour precip forecast for 7 PM Wednesday