A record hatch of mayflies in LaCrosse, Wisconsin was so thick that it showed up on local weather radar as a rainstorm:
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.
(Thanks, Fipi Lele!)
