NWS Warns Delawarians to Avoid Tidal Flooding Zones on Thursday

On October 2, 2025, the National Weather Service (NWS) office in Mount Holly, New Jersey, issued a coastal flood advisory for inland Sussex and Delaware beaches. The advisory, which remains in effect until 10 p.m. that evening, warns nearly 200,000 people in Delaware not to leave their vehicles in locations prone to tidal flooding.

Forecasters expect up to half a foot of tidal inundation above ground level in low-lying areas near shorelines and waterways. This is expected to result in minor flooding of lots, parks, and roads, though only isolated road closures are anticipated. The NWS cautions motorists against driving through floodwaters, as the depth and hazards may not be easily visible, threatening both safety and vehicle integrity.

The advisory serves as a reminder of the ongoing need for preparedness in coastal communities, where such flooding events can lead to property and vehicle damage, temporary road closures, and hazards to life. Authorities recommend that residents remain vigilant for updates and avoid at-risk locations, especially during periods of high tide.