PITTSBURGH (KDKA) — Something bizarre has buzzed onto meteorologists’ radar maps in Pennsylvania, Ohio and Indiana.

Dragonflies have invaded parts of western Pennsylvania, and there’s so many of them, they’re actually showing up on weather radar maps.

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(Photo Credit: KDKA)

KDKA Meteorologist Ron Smiley says to the untrained eye, the bugs actually make it look like rain is moving through the area.

However, the National Weather Service in Cleveland says it is “most likely dragonflies mixed with other insects/birds.”

According to WKBN, people who live in Mercer County, as well as Columbiana, Mahoning and Trumbull counties in Ohio have reported seeing an influx of the insects.

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People living on a street in Struthers, Mahoning County, reported thousands of dragonflies to WKBN. They described it looking like a “small tornado.”

(Photo Credit: KDKA)

An expert on insects at the Carnegie Museum of Natural History says there is no consensus on why the swarms happen from time to time.

Some say its about them moving south for the winter, others attribute it to the wet year, food supply and even overpopulation.

WATCH: Dragonflies have invaded Western Pennsylvania.

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