Severe Storm Risk Rises Across Eastern US as Heat Wave Fuels Potential for Large Hail, Tornadoes

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A fast-moving storm system is forecast to sweep across the Eastern United States on Sunday afternoon and evening, bringing heavy rain and the potential for severe weather through Monday. The storm system is being fueled by a record-breaking heat wave in the West, increasing instability ahead of an early spring cold front. Forecasters warn of the possibility of large hail, damaging winds, and even isolated tornadoes, especially in the Ohio River Valley region.

Why it matters

Severe weather events like this can pose significant risks to public safety, infrastructure, and property. The combination of heavy rain, large hail, and potential tornadoes could lead to power outages, flash flooding, and other dangerous conditions for residents in the affected areas.

The details

The storm system is expected to bring a Level 3 out of 5 severe storm risk to much of western Pennsylvania, eastern Ohio, and a small part of West Virginia. A Level 2 out of 5 severe storm risk remains for Louisville, Kentucky; Cincinnati and Columbus, Ohio. Forecasters warn that hail up to 2 inches in diameter, or about the size of an egg, is likely in these regions. While the tornado threat is uncertain, isolated tornadoes cannot be ruled out. Heavy rain along the front is expected to move into the Mid-Atlantic and southern New England by Sunday evening, with the potential for occasional torrential downpours.

• The storm system is expected to sweep across the Eastern US this afternoon and evening.
• Heavy rain and thunderstorms will become increasingly likely from the Ohio Valley into southern New England as a cold front associated with the low-pressure system moves into the Great Lakes and Northeast.
• By late Sunday afternoon, the front extending from the system will move into the Ohio Valley, where storms are expected to develop.
• As the system moves east, it is expected to affect areas from the Mid-Atlantic coast to the lower Mississippi Valley by Monday morning.
• By Monday, severe storms could occur across the Carolinas as the cold front begins to weaken, with large hail being the main threat.

What’s next

Forecasters will continue to monitor the storm system and provide updates on the potential for severe weather, including any tornado warnings or watches that may be issued.