Severe · Coastal Flood WarningActive alert
Coastal Flood Warning issued September 26 at 2:08PM EDT until September 27
Affecting Eastern Essex; Suffolk; Eastern Norfolk; Eastern Plymouth; Barnstable; Dukes; Nantucket
In effect until: Sep 27, 2026, 7:15 AM
Eastern Essex; Suffolk; Eastern Norfolk; Eastern Plymouth; Barnstable; Dukes; Nantucket
Likely impact; effects through 7:15 AM.
Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. Inexperienced swimmers should remain out of the water due to dangerous surf conditions.
Read the original bulletin (official text)
* WHAT...For the Coastal Flood Warning, up to one foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (3.9 to 12.6 feet Mean Lower Low Water). For the High Surf Advisory, large breaking waves of 6 to 15 feet in the surf zone. * WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA, Eastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA Counties. * WHEN...Until 8 PM EDT Sunday. * IMPACTS...Strong northeast winds with large waves will result in minor coastal flooding with pockets of moderate coastal flooding over multiple high tide cycles from late today through the weekend. The water also may struggle to vacate the area after the high tides given persistent strong northeast winds. The greatest risk for coastal flooding appears to be setting up south of Boston and onto the Cape and Islands. In addition...the long duration of northeast winds coupled with large waves over multiple high tide cycles will result in areas of severe beach erosion for a prolonged period.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™