A statewide tornado drill will take place this (Tuesday) morning at 10.
It is part of severe weather preparedness week in Missouri.
Tornado sirens will sound and all schools and businesses are being encouraged to participate in practicing going to safe zones.
Officials are reporting some counties will not sound sirens this (Tuesday) morning due to below freezing temperatures, and sounding them during the extreme cold can damage the equipment.
In Mexico, sirens will be sounding at 1 pm.