SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/hike-thunder-striking-distance

If you can hear thunder while hiking, what does that mean?

You are close enough to be struck by lightning. Head for safe shelter now.

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  1. You are close enough to be struck ✔
  2. The storm is at least 50 miles away
  3. Lightning will not come for an hour

Why: The National Weather Service slogan is When Thunder Roars, Go Indoors. If you hear thunder, you are within striking distance, and there is no safe place outside during a thunderstorm.

Huh, didn't know that: Lightning strikes the United States about 25 million times a year.

The dad joke
What did the cloud say to the lightning bolt? You are shocking.
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References

Answer: You are close enough to be struck. The National Weather Service slogan is When Thunder Roars, Go Indoors. If you hear thunder, you are within striking distance, and there is no safe place outside during a thunderstorm.

  1. NPS: When Thunder Roars, Go Indoors www.nps.gov/articles/lightning-safety.htm
    If you hear thunder, you are close enough to be struck by lightning.
    Checked 2026-10-12.
  2. NWS: Lightning Safety Tips and Resources www.weather.gov/safety/lightning
    Lightning strikes the United States about 25 million times a year.
    Checked 2026-10-12.

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