If you hear thunder or see lightning: When Thunder Roars, Go Indoors

  • Stop all outdoor activities.
  • Seek shelter in a substantial building or hard-topped vehicle.
  • Avoid open high ground and isolated large trees.
  • Avoid water (such as swimming pools, lakes, and rivers), beaches, and boats.
  • Stay away from doors, windows, and metal objects such as pipes or faucets.
  • Use the 30-30 rule for outdoor activity.

The 30-30 Rule

30 Seconds: Count the seconds between seeing lightning and hearing thunder. If this time is less than 30 seconds, lightning is still a potential threat. Seek shelter immediately.

30 Minutes: After the last lightning flash, wait 30 minutes before leaving the shelter.

If Someone is Struck by Lightning:

  • Call 9-1-1. Provide directions and information about the lightning strike and victim(s).
  • Give first aid. Do not delay CPR if the person is unresponsive or not breathing.
  • If possible, move the victim to a safer place. Lightning can strike twice. Don’t become a victim.

Source: UF Department of Emergency Management (UFDEM)


NWS Lightning Safety Tips and Resources – Thunderstorms and Lightning

UFDEM Weather Ready – Lightning

Version Date: August 2016