Sunday, July 15, 2012

Tracking This Afternoon's Thunder

Thunderstorms are starting to pop out to our west, moving slowly eastward.  Storms are more numerous back in Western and Northwestern Pennsylvania, closer to a trough that's tracking east through the Northeast today.  That trough will push to our north but will aid in thunderstorm development this afternoon in a warm, unstable, tropical-like airmass.

Locally, storms are popping in Berks and Schuylkill County as of 12:45 PM, moving towards the Lehigh Valley.  These will work through Allentown and Bethlehem over the next hour or two.  More storms are popping down near York and will work towards Lancaster and eventually the Philly area after 2:30 PM.

There isn't a threat for severe weather today although locally gusty winds are possible in the strongest of thunderstorms.  The biggest threat this afternoon is heavy rainfall.  Dew points are in the lower to middle 70's in the area, providing plenty of moisture in the atmosphere to help support localized soakings in spots as these storms march east.  We should see a threat of storms increase in Philadelphia after 2:30.

More:  Current Weather Page