From Maryland Department of Natural Resources:
Today, the August full Moon will be a Supermoon which occurs when the Moon is within 90% of its closest approach to Earth. They are the biggest and brightest full Moons of the year. Although it will not look blue, this will be a Blue Moon. The first recorded use of “Blue Moon” in English dates from 1528. The Moon will appear bigger and brighter for three days, (Sunday morning through early Wednesday morning). The full Moon of August is traditionally called the “Sturgeon Moon.” The name Sturgeon Moon comes from the giant lake sturgeon of the Great Lakes and Lake Champlain; this native freshwater fish was readily caught during this part of summer and an important food staple for Native Americans who lived in the region. At one time the lake sturgeon was quite abundant in late summer, though they are rarer today.
