MID-ATLANTIC — A developing weather system is expected to bring a late-day severe storm threat Sunday across Pennsylvania, Maryland, New Jersey, and New York, following an unusually warm afternoon with temperatures nearing 80 degrees.
Warm Surge Sets the Stage for Evening Storms
Ahead of the incoming cold front, much of the region will experience unseasonably warm temperatures approaching 80°F, creating the instability needed for storm development later in the day.
This warm air mass combined with increasing moisture will act as fuel, while the approaching front provides the trigger for thunderstorms.
NOAA Highlights Slight Risk Across Interior Zones
Parts of western and central Pennsylvania into northern Maryland fall under a Level 2 out of 5 Slight Risk, meaning scattered severe storms are possible.
Surrounding regions including Philadelphia, Baltimore, and New York City remain under a marginal risk, where storms are still expected but may be less intense.
Storm Timing Focused After 7 PM
High-resolution guidance shows storms developing after 7 PM, first across western Pennsylvania and eastern Ohio, then tracking east…