Sign up today and save up to 67% on a Hartford Courant digital subscription
CT Now

Thank the supermoon, winds for coastal flood advisory

The coastal flood advisory that has been in effect for parts of the Chesapeake Bay the last two mornings is a result of the full moon and sustained winds, according to the National Weather Service.

Tides a foot higher than normal are expected, and have already been seen in lower parts of the bay. The U.S. Naval Academy's first high tide was at 7:47 a.m., Fort McHenry's was at 9 a.m. and Havre de Grace's around noon.

High tides are expected again at 7:51 p.m. in Annapolis, 9:26 p.m. at Fort McHenry, 10:18 p.m. at Bowley's Quarters and 12:46 a.m. at Havre de Grace.

The coastal flood advisory is in effect for Anne Arundel, Baltimore and Harford counties and Baltimore city through 1 a.m.

This weekend's supermoon, a normal full moon coinciding with the moon's perigee, was expected to contribute to higher than normal tides. The moon was a mere 221,800 miles away at its closest Saturday night.

Prolonged easterly and southeasterly winds have also held more water in the bay and pushed it toward shorelines, said Nicole Listemaa, a meteorologist with the National Weather Service in Sterling, Va.

Copyright © 2015, CT Now