How do I deal with thunderstorms on the trail?
Immediate actions
When thunder roars, go indoors—or if you're hiking, descend to lower elevation. Lightning can strike from miles away, so don't wait for rain. If you're above treeline, get below treeline as fast as safely possible. Avoid ridges, peaks, and open fields.
If you can't reach a building or vehicle, find a low spot away from tall trees, rocks, and water. Crouch on your pack or a pad with your feet together to minimize ground contact. Don't lie flat. Spread out if you're in a group.
- Descend immediately if above treeline
- Avoid ridges, peaks, open areas, water
- Crouch on insulation, feet together
- Spread out from others
Waiting and resuming
Wait at least 30 minutes after the last thunder before leaving shelter. If you're in a safe spot, stay there. Lightning can strike again even after the storm seems to pass. Monitor weather forecasts and radar before and during your hike.
If you're in a forest, avoid the tallest trees. In a tent, you're not safe from lightning; a hard-top vehicle or building is best. Plan your route with escape options in mind.
- 30-minute rule after last thunder
- Tents offer no lightning protection
- Check radar before hiking
- Know escape routes
Common mistakes
- Continuing to hike when you hear thunder, thinking the storm is far away.
- Sheltering under a tall isolated tree, which attracts lightning.
- Resuming hiking too soon after the storm seems to pass.
