They say "once in a blue moon" because it's a rare occurence; once every 14 years, apparently, when we get 13 full moons a year instead of 12. The moon's orbit is closest to the earth, so the moon looks bigger and brighter - but never blue.
These pictures were taken at 7.30 pm and then again around 9.30. Very bright!
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Blue moons happen about every 2 to 3 years. They don't look any different than any other full moon. The super moon is a full moon that happens when the moon is at its closest to the Earth. It doesn't look much different, either. A super moon does effect tides. This one may have made Hurricane Idalia storm surge a little worse.
CD