SNOW IN THE NORTHEAST

Storm Map: Severe Thunderstorms Threaten the Mid-Atlantic

Thursday, November 12, 2026 – Valid through Friday morning

A developing storm system will bring the potential for strong to severe thunderstorms across portions of the Mid-Atlantic today. The greatest concern is focused across eastern Pennsylvania, New Jersey, and the Philadelphia metropolitan area, where storms could become strong enough to produce damaging winds, large hail, and possibly an isolated tornado.

Highest Risk: Philadelphia and Southern New Jersey

The 4070 outlook identifies a TS4 severe weather risk across the Philadelphia region and portions of southern New Jersey. This is the highest risk category highlighted on today's map and indicates the potential for damaging wind gusts exceeding 60 mph, hail larger than one inch, and a few isolated tornadoes.

Storms developing within this area will need to be monitored closely, particularly if they become organized or produce stronger rotating thunderstorms. The potential for locally damaging wind gusts will be an important concern.

Gusty Storms: Pennsylvania, New Jersey, and New York

A broader TS2 risk extends across much of eastern Pennsylvania, northern and central New Jersey, the New York City metropolitan area, and portions of Long Island. These storms may produce gusty winds, periods of heavy rainfall, and localized flooding.

Some storms could become stronger than initially anticipated, especially where atmospheric instability and wind shear overlap. The strongest activity should remain concentrated closer to the central Mid-Atlantic, but conditions will need to be monitored across the surrounding region.

Surrounding Areas

A lower TS1 risk extends across portions of Maryland, Delaware, southern Pennsylvania, northeastern New Jersey, and southern New England. Scattered thunderstorms are possible, although the potential for significant severe weather is lower in these areas.

What to Watch

The primary concern today will be how quickly thunderstorms develop and whether individual cells organize into stronger storm clusters. Damaging winds appear to be a key threat, but large hail and an isolated tornado cannot be ruled out within the highest-risk area.

Heavy downpours could also produce localized water accumulation, particularly in urban areas and locations with poor drainage.

The Bottom Line

This is a localized but potentially significant severe weather setup for the Mid-Atlantic. The Philadelphia metropolitan area and southern New Jersey are highlighted for the greatest threat, with surrounding portions of Pennsylvania, New Jersey, New York, and Maryland also needing to monitor conditions.

Residents should remain weather-aware throughout the day and have a way to receive warnings as storms develop and move through the region.