Thanks Andrew, Rick & Mike
Rick - the storm itself was fast and furious when it finally started to rain. It was eerily quiet as the front rolled over, which is why I had the impression that it moved like a spaceship. Full force, including small hail, lasted 15 or twenty minutes - and then it went poof!
Quite amazing to witness.
Taken with the new OM-D, which I have not fully conversed myself with yet. It was a rush job to dial in appropriate settings. "Auto" won in the end. LOL