Thursday, July 19, 2012
Muggy, Storms Move In Later
We'll have another shot at thunderstorms this afternoon and tonight...this time with a wave of energy riding east along the frontal boundary. As of this morning, this complex of storms is over Chicago and the Great Lakes and is firing off a MCS (thunderstorm complex). There should be a bit more instability, a bit better moisture support, and a bit more favorable wind trajectory at the surface and in the lower atmosphere today. This should (fingers crossed) result in thunderstorms this afternoon and evening. As the front is pretty much overhead this morning, the best chances for the heaviest thunderstorm activity will be across Philly and points south although any location could receive a drenching thunderstorm later on today and tonight.
We're starting out plenty warm locally -- 70's early this morning with some clouds around in the sky -- and we'll head towards the upper 80's to low 90's this afternoon. We're pegging 90 for the city for a high -- which would mark the 5th day of 90+ in a row and 20th in 22 days. It will not be *as* hot today but with dew point values still pushing 70 or above, it will feel quite muggy.