Science ❯ Astronomy ❯ Lunar Phases

Supermoons

Perigee Astrological Significance Moon Illusion Harvest Moon Perigee Moon Cold Moon Characteristics Viewing Conditions Meteor Showers Occultation Events

Supermoon King Tides Raise U.S. Coastal Flood Risk, Bay Area Under Advisory

A full moon at perigee is driving the season’s highest high tides with effects varying by coast.