Name: Mayflies everywhere! Swarms of mayflies visible on radar
Uploaded: 2026-06-25T21:36:49.395Z
Duration: 39 s
Channel: The Weather Channel
Description: It is the time of the year where mayflies swarm parts of the Upper Mississippi River and Great Lakes region. Some of these even appear on radar. Meteorologist Rob Shackelford breaks down how gross this is.

June 25, 2026

Updated: June 25, 2026, 5:47 pm EDTPublished: June 25, 2026, 5:36 pm EDT

It is the time of the year where mayflies swarm parts of the Upper Mississippi River and Great Lakes region. Some of these even appear on radar. Meteorologist Rob Shackelford breaks down how gross this is.