# Nor'easter threatens coastal flooding and beach erosion

> Nor'easter could become tropical storm as it hits Carolinas and Mid-Atlantic coasts.
- Title: Nor'easter threatens coastal flooding and beach erosion
- Summary: Nor'easter could become tropical storm as it hits Carolinas and Mid-Atlantic coasts. Nor'easter brings coastal flooding, beach erosion, and dangerous surf to…
- Keywords: nor'easter, carolinas, midatlantic, coastal flooding, beach erosion, hatteras island, mandatory evacuation, invest 93l, news, entertainment, threatens, coastal
- Source: New York Post — https://nypost.com/2026/10/20/us-news/powerful-noreaster-shows-possible-tropical-development-as-it-hits-carolinas-mid-atlantic
- Published: 2026-10-20T14:12:11+00:00
- Read time: 1 min
- Topics: nor'easter, carolinas, midatlantic, coastal flooding, beach erosion, hatteras island, mandatory evacuation, invest 93l, news, entertainment
## Storm system
A powerful nor'easter spinning off the North Carolina coast is expected to bring coastal flooding, beach erosion, gusty winds, dangerous surf and rip currents to parts of the Mid-Atlantic and Southeast coasts through Thursday.
## Invest 93L designation
The National Hurricane Center has tagged the storm as Invest 93L, indicating it has potential to take on subtropical or tropical characteristics.
## Mandatory evacuation
A mandatory evacuation is in effect on Hatteras Island as storm conditions are expected to worsen with potential for significant ocean overwash.
## Coastal impacts
North Carolina’s Outer Banks and Delmarva coasts will see days of coastal high tide flooding, gusty winds and beach erosion regardless of tropical development.
## Beach erosion
Ramps down to Scarborough State Beach are blocked with caution tape and rope after a nor'easter eroded feet of sand.
## Highway closures
Parts of North Carolina Highway 12, the primary route through the Outer Banks, are closed due to flooding.
## Water levels
Water levels are expected to rise more than two feet above normal during high tide in Ocean City, Maryland.
## Key takeaway

Nor'easter brings coastal flooding, beach erosion, and dangerous surf to Carolinas and Mid-Atlantic coasts through Thursday with mandatory evacuation on Hatteras Island.