Whoa.

This is reportedly a radar pic of the storm:

More info from The Sun:

Terrifying footage shows a twister sweeping through the streets between Gessate and Cernusco sul Naviglio.

Debris can be seen spinning in the air as black clouds loom over.

Firefighters have been sent on more than 110 calls as bad weather plagues the city, with many areas flooded.

It is feared some people may have been injured, reports Italian weather site MeteoWeb.

The tornado touched down around 11 a.m. local time.