Thank you for your question.

While a Cecidomyiidae gnat is a possibility, I think a more likely possibility is a type of buzzer midge (Chironomus spp.) that is in the Chironomidae family. The gnat you suggested is typically quite small, having a length of about 0.1 inch.  Buzzer midges are closer to 0.5 inches in length. Not knowing the scale on the picture you sent, I can’t positively say which of these two possibilities is correct. You will be in a better position to decide. See:

https://en.wikipedia.org/wiki/Cecidomyiidae

https://bugguide.net/node/view/1114021

http://minnesotaseasons.com/Insects/non-biting_midges_Chironomini.html - :~:text=Chironomini is a diverse tribe,of which occur in Minnesota.

https://apps.extension.umn.edu/garden/diagnose/insect/general-curiosity-insects/flies/small/chironomidmidges.html

I have been receiving various reports of the prevalence of Buzzer midges in the Metro area as this is the time of the year they emerge from lakes and rivers. I would appreciate hearing back from you as to what you now think is the ID of this insect.

Thanks for consulting us.