Home Accuweather.com Late-Season Nor’easter Off East Coast Threatens Coastal Flooding and Possible Tropical Development

Late-Season Nor’easter Off East Coast Threatens Coastal Flooding and Possible Tropical Development

There are only six weeks remaining in the 2026 Atlantic hurricane season, plenty of time for late-season tropical development. In fact, AccuWeather hurricane experts are currently tracking a medium risk for tropical or subtropical development associated with the Nor’easter off the East Coast from Oct. 20-23.

“Regardless of whether the system develops into a tropical or subtropical depression or storm, coastal flooding, dangerous surf, and beach erosion are expected to threaten portions of the mid-Atlantic coast this week. Interest along the East Coast should closely monitor the system, particularly in communities vulnerable to coastal flooding and erosion,” said AccuWeather Lead Hurricane Expert Alex DaSilva.

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Tropical vs. Subtropical Development

Faith Based Events

Tropical systems derive their energy primarily from warm ocean waters, while subtropical storms draw energy from both warm ocean waters and atmospheric processes associated with the jet stream.

Subtropical storms also typically have larger wind fields than purely tropical systems, allowing hazardous marine conditions to extend farther from their centers.

The area of low pressure off the East Coast is associated with a cold front, a common source of late-season tropical or subtropical development.

Late-Season Tropical Threats Remain Despite El Niño Impacted Season

As hurricane season approaches its Nov. 30 conclusion, AccuWeather hurricane experts increasingly focus on the western Caribbean, the Gulf, and waters off the southeastern United States for development.

“The risk of another major hurricane in the Atlantic this season is low, but we could still see one or two additional named storms and perhaps another hurricane before the season ends. Even one more direct U.S. impact cannot be ruled out this season. It only takes one storm to cause significant damage and threaten lives. With several weeks remaining in hurricane season, people living in hurricane-prone areas should not let their guard down,” added DaSilva.

Increasing wind shear makes the Atlantic’s main development region less favorable for storm formation late in the season, while waters closer to the United States remain warm enough to support tropical development.


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