The National Weather Service issued a Hazardous Weather Outlook at 3:41 pm for southeast Pennsylvania, east central Pennsylvania, northeast Pennsylvania, central Delaware, northern Delaware, southern Delaware, northeast Maryland, central New Jersey, northern New Jersey, northwest New Jersey and southern New Jersey. According to the National Weather Service tonight will bring showers and thunderstorms, which may produce locally heavy rain which could result in flooding of small streams and creeks, roadways and areas of poor drainage.
First a warm front and then a cold front will push through during the area during the next 12 hours, bringing downpours and thunderstorms, especially after 8 pm. Localized flooding is the biggest concern with the high moisture content in the air.
TONIGHT: Isolated downpours are possible from spotty thunderstorms up until around midnight or so. Flash flooding is possible where storms set up. Avoid flooded areas. We largely dry out overnight. The low is 72.
WEDNESDAY: This is a transition day. Clouds are likely in the morning, with sun returning during the afternoon from west to east. An isolated instability shower is possible as a trough moves through.