The National Weather Service says they've confirmed that a tornado was formed southeast of Tucson Saturday afternoon.
We've gone ahead and confirmed a tornado at 4 PM yesterday in Cochise County. Here is a look at radar velocity data at the time. #azwx pic.twitter.com/xxjisPJA1J
— NWS Tucson (@NWSTucson) July 31, 2017
It's unclear if the tornado actually touched down in the area, or if any damage was caused.
Just a few weeks ago a landspout tornado was also confirmed near Marana. No damage was caused from that incident.