Mayflies So Thick They Show on Radar
A record hatch of mayflies in Wisconsin this past week was so large that it showed up on National Weather Service radar screens as a large rain storm.
The bugs were so thick that they showed up as a rainstorm of mayflies on National Weather Service radar.
For about 1 1/2 hours starting at 9 p.m., the insects drifted north, with the radar showing them blanketing areas along the Mississippi River.
"They were dive-bombing in the root beer floats," said Gary Rudy, owner of Rudy's Drive-In, whose family has been slinging burgers and soft drinks since 1966.
I witnessed one of these events as a teenager while on vacation near lake Michigan. Mayflies as long as your pinkie finger filled the air and literally covered the ground like snow. We were relieved when we found out that 1. They didn't bite and 2. they would be gone by morning. If only I had been a fly fisherman back then!
(Link) Thanks for the heads up Boing Boing.