September Nor'easter Threatens Major Coastal Flooding and Hurricane-Force Winds Along East Coast

Key points

• Coastal flood warnings and high wind watches are in place along much of the East Coast, with more alerts expected Thursday.
• Highest rainfall totals of 2 to 3 inches or more are most likely from Rhode Island to eastern Massachusetts.
• Wind gusts up to 50-60 mph could topple power lines and trees, with small shifts in the storm's track determining the worst-affected areas.
• Coastal flooding is expected to run 1 to 3 feet above high tide, potentially worsened by a full moon on Saturday night.
• Waves are forecast to reach 12 feet in Ocean City, New Jersey, and up to 22 feet in New England.
• The Boston Red Sox moved their season finale from Sunday to Friday to avoid weather-related delays.

Background

This rare September nor'easter was first identified on September 21, 2026, with forecasters noting the unusual timing for such a storm. The exact impacts have been uncertain due to disagreements in forecast models regarding the storm's track. In the Pacific, Tropical Storm Moke previously affected Hawaii in August, but the current threat is from Tropical Storm Nolo, which is now strengthening and moving north.

How outlets are covering it

NBC News emphasizes the uncertainty in the storm's exact track but highlights the high confidence in a long-duration onshore wind event and significant coastal flooding, particularly in southeastern Virginia. The Weather Channel focuses on the ramping up of coastal flooding as the nor'easter batters the East Coast. Yahoo highlights the potential for hurricane-force gusts in New England and major coastal flooding. All sources agree on the severity of the storm's impact, but NBC News provides more specific details on rainfall totals and wind gusts, while Yahoo emphasizes the potential for hurricane-force winds in New England.

Why it matters

The rare September nor'easter poses a significant threat to millions of people along the East Coast, with potential for major coastal flooding, damaging winds, and heavy rain. The storm's impact could disrupt daily life, cause power outages, and lead to property damage. Additionally, Tropical Storm Nolo threatens heavy rain and flash flooding in Hawaii, with potential hurricane-force winds, posing a risk to residents and infrastructure on the Big Island and Maui.

What to watch

Forecasters will continue to monitor the storm's track and update alerts as more information becomes available. Residents along the East Coast should prepare for potential power outages, flooding, and damaging winds. In Hawaii, residents should be alert for potential life-threatening flooding and mudslides, with tropical-storm-force winds possible as early as Thursday night and hurricane-force winds by Friday night.