PORTLAND, Maine — The next two days will bring the highest astronomical tides of the fall, known as "king tides."
These tides are regular, annual occurrences that line up with the moon's phase.
When tides are naturally this high, we are always on guard for any storms or wind that can raise the water level, even by just a few inches.
Marshes and estuaries will be filled to the brim and vulnerable areas will become inundated with water for an hour or two around high tide. Some splash over is possible on exposed shore roads too.
A Coastal Flood Advisory has been issued for Cumberland and York counties, plus the New Hampshire seacoast from 11 a.m. to 1 p.m. This is where flooding is most likely to occur.
Today's tide in Portland is 11.4 feet; adding a 5 to 10-inch surge on top, it'll rise to about 12.2 feet, according to the National Weather Service.
Tuesday's hightide will also cause some minor flooding.
