Severe Thunderstorm Watch Issued Across Eastern PA

A severe thunderstorm watch is in place across much of Eastern Pennsylvania Tuesday through 8 p.m.

Twenty-six Pennsylvania counties are under the watch, including Bucks, Berks, Chester, Delaware, Lehigh, Lancaster, Montgomery, Philadelphia and Schuylkill.

According to forecasters, the highest chance of thunderstorms is between 2 and 9 p.m.

Wednesday will continue to be potentially wet, with a chance of showers between 11 a.m. and 2 p.m. Otherwise, expect partly sunny skies, with a high near 75.

The chance of storms returns Thursday, with thunderstorms possible after 5 p.m.

Forecasters said at the start of the week that an "atmospheric traffic jam" was expected to bring several days of clouds, rain and thunderstorms to the Philadelphia region. The highest chance for severe weather was predicted for Tuesday, forecasters said.

The gloomy conditions are caused by a storm that's moving slowly and stalling across the United States.