On Thursday, April 20 (Tornado Drill Day), the outdoor warning sirens will be activated two times – once at 1:45 PM for businesses, schools, and other facilitates to practice their plans, and again at 6:45 PM for late shifts and families in their homes. Please note that the NOAA weather radios will also sound for this simulated tornado warning. Additional information can also be found at: MN Dept. of Public Safety