When should a person seek shelter in a thunderstorm?

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A person should seek shelter in a thunderstorm as soon as thunder is heard or a cloud to ground lightning strike is seen. When either thunder is heard or a cloud to ground lightning strike is observed, lightning is close enough to strike the person. A person should remain in safe shelter until 30 minutes after the last lightning strike is seen or last clap of thunder is heard.

(This answer provided for NATA by Carrie F. Reynolds, MS, ATC, VATL.)

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.