Perigean tides: A perigee Moon brings with it extra-high "perigean tides," but this is nothing to worry about, according to NOAA. In most places, lunar gravity at perigee pulls tide waters only a few centimeters (an inch or so) higher than usual. Local geography can amplify the effect to about 15 centimeters (six inches)--not exactly a great flood.
January 8, 2009: When last month's full Moon rose over Florida, onlooker Raquel Stanton of Cocoa Beach realized that something was up.
"The Moon was stunningly gorgeous--and it looked bigger than usual!" she says. "My whole family noticed and watched in awe."
Like millions of others around the world, she had witnessed the biggest full Moon of 2008--a "perigee Moon," 14% wider and 30% brighter than lesser Moons she had seen before. "I'll never forget it."
Alert: It's about to happen again.
see the rest of this article at NASA
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