Coastal Flood Advisory Issued for East Coast What You Need to Know

On May 14, 2025, the National Weather Service (NWS) issued multiple Coastal Flood Advisories for areas along the U.S. East Coast. Residents of Washington, D.C., Alexandria (VA), New Jersey, Philadelphia, and surrounding regions were warned of minor to moderate coastal flooding due to high tide and persistent onshore winds.

Affected Areas & Impact:

• Washington, D.C.: Areas near the Potomac River were expected to see up to 2 feet of tidal inundation, affecting low-lying roads and waterfronts. The advisory remained active until 12:00 PM EDT.

• Alexandria, Virginia: Forecasts predicted water levels could rise 1 to 1.5 feet above ground in flood-prone zones, with potential street closures and disruptions. The advisory extended until 3:00 PM EDT.

• New Jersey & Philadelphia: Minor tidal flooding was reported, particularly in coastal communities and urban shorelines. The advisory was active until 6:00 AM EDT.

The NWS emphasized that while major flooding was not expected, even minor flooding could cause significant inconvenience, especially during morning commutes.

Why Is This Happening?

The flooding is primarily driven by persistent northeast winds pushing water inland, coupled with astronomical high tides. This combination is typical during spring when tides are naturally higher. Low-pressure systems offshore are also contributing to elevated water levels.

Safety Precautions:

Authorities urged residents to:

• Avoid driving through flooded streets. Just six inches of water can cause vehicles to lose control.

• Move parked vehicles to higher ground. Floodwaters can quickly damage vehicles.

• Secure outdoor belongings. Items near the shore can be displaced by rising waters.

• Stay updated through local emergency alerts and NWS updates.

Climate Change and Coastal Flooding:

Experts point out that these advisories are becoming more frequent due to rising sea levels. Coastal communities are increasingly vulnerable, making infrastructure resilience and preparedness critical.

Final Note:

While the May 14 advisory was classified as "minor," it serves as a timely reminder of the ongoing challenges posed by coastal flooding. Residents are advised to remain vigilant, especially as the 2025 hurricane season approaches.