Mar 18 Local News ‘Extreme Supermoon’ Visible on Saturday The occurrence is called a perigee, or the point on the moon's orbit at which the moon is closest to the earth. This point coincides with a full moon this year, producing a rare visual phenomenon. The forecast for Saturday is mostly cloudy, but keep an eye on the eastern horizon at sunset. By Dalton Main Mar 18 Local News ‘Extreme Supermoon’ Visible on Saturday Dalton Main