PIC: Soooo this swarm of bugs is so thick you can see it on radar?

So that blob on the weather radar? It's not a storm. It's a swarm.

WEWS Chief Meteorologist Mark "Still not a foul" Johnson shared this photo via Twitter last night:

Yes... Those are millions of mayflies showing up on Power of 5 Radar. Details: http://t.co/t2q8MReSV6 @MarkJWeather pic.twitter.com/quJaaqcrmj

— WEWS NewsChannel5 (@WEWS) June 24, 2015

Seriously? Enough mayflies out over the lake that the mass is visible ON RADAR? Yes, and it's common.

Mark wrote up a good explanation of mayflies and their mating habits, including a mention of what their presence across Ohio's north coast means for water quality. These insects are a sign that water quality is good, and their reappearance each season shows that Lake Erie's health has improved in recent decades.

So while challenges to Lake Erie remain, these bugs are nothing to be scared of. Unless of course they rise up against humanity.