Hereâs why I chose the NASM certification! Did you need any sort of background related to the field going into the program? Nope, you just need to make sure that you have a current CPR and AED certification before you take the exam. How long does your certification last before you have to renew it?
Tornado Warning. This is issued when a tornado is indicated by the WSR-88D radar or sighted by spotters; therefore, people in the affected area should seek safe shelter immediately. They can be issued without a Tornado Watch being already in effect. They are usually issued for a duration of around 30 minutes.
Always call 911 if you are in immediate danger and need emergency help. Tornadoes can strike with little or no warning. If you live in an area where tornadoes occur, prepare ahead of time. If you are under a tornado WARNING, seek shelter immediately! Prepare for a tornado - information to help residents, communities, and businesses understand the dangers and plan ahead. Current watches and warnings.