Philadelphia, Pa. – Oppressive heat and humidity return to the Mid-Atlantic today, with temperatures soaring into the low 90s and heat index values climbing toward the upper 90s. The muggy air will fuel late-day thunderstorms capable of producing heavy downpours, localized flash flooding, and damaging wind gusts.
According to the National Weather Service in Mount Holly, a cold front pushing in from the west will trigger the storms late this afternoon and evening. The greatest risk for flash flooding will be in slow-moving cells, especially in parts of South Jersey, southeastern Pennsylvania, and northern Delaware.
Philadelphia, Trenton, and Wilmington could see brief but intense rainfall during the evening commute. The storms may linger overnight across southern New Jersey and the Delmarva Peninsula. Beachgoers along the Jersey Shore face a moderate risk of rip currents today.
Residents are urged to avoid flooded roads, secure loose outdoor items, and prepare for potential power outages. While no Heat Advisory is in effect, the combination of warmth and humidity will make outdoor activities uncomfortable.
The unsettled weather lingers into Thursday before humidity begins to ease Friday. Additional storms are possible Sunday with another front.
