The first of three “supermoons” of the summer rises Saturday about 9 p.m. It will seem huge on the horizon. The phenomenon, caused by the moon being close to earth in its orbit, also makes tides higher and lower than normal. That means beachgoers will have a wide expanse of sand at low tide Saturday afternoon but coastal flooding might occur at high tide that night.

The effects will be felt tonight and Sunday too, but ease on Monday.

Read more in upcoming editions of The Post and Courier.