Why there was a 2nd tornado siren test in Hennepin County on Wednesday

(FOX 9) - You weren't hearing things. Some folks in Hennepin County heard an extra emergency siren test on Wednesday.

The second alert was heard by FOX 9 in Eden Prairie about 45 minutes after the standard test. In Minnesota, most counties test their tornado sirens on the first Wednesday of each month at 1 p.m.

In a message to FOX 9, Hennepin County officials say the second alert was not intentional -- a tech issue caused it.

For more information on siren tests, you can click here.