Areas of Minnesota are beginning to prepare for Mayfly season.

Mayflies, according to Britannica, are "any member of a group of insects known for their extremely short life spans and emergence in large numbers in the summer months." In their aquatic immature stage they may be called nymph or naiad and in their winged stage may be known as shadfly, sandfly, dayfly, fishfly, and drake. What really matters is that they tend to hatch and congregate in huge masses, sometimes so large they can be picked up on weather radars!

(Tweet above is dated 2017 and not current)

One video shared to reddit shows mayflies (location undisclosed) covering the street, sidewalk, air and lamp posts.

The mayflies are out, doing their thing... from r/minnesota

(If video above does not show, click here)

Here in Minnesota, Mayflies are commonly found in and near freshwater systems including the Mississippi River. One Minnesota city -- Hastings -- is already preparing for their mass arrival.

"Observations and reports indicate that we are likely to experience the first significant mayfly hatch of 2020 sometime soon," the city said on Facebook. "Accordingly, beginning tonight and continuing through the weekend, street and parking lot lighting in the downtown area, on the Bridge, and along the riverfront will be powered off to help lessen the impact."

Back in 2017 the Mayfly situation was so bad it led to massive mounds littering the lock and dam in Welch, MN and even a three-car accident near Red Wing.

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