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.
The key is whether your family would know where to go and what to do. when the big one potentially hits. Paul Shipman, of the American Red Cross, says that no matter how you get a severe weather warning -- from television, the radio or your smart phone or tablet -- itâs time to spring into action once you see a tornado warning.