Caught in a Thunderstorm While Hiking? Here’s What to Do

The sky was clear when you started hiking. A few hours later, the wind begins to rise, the temperature drops and dark clouds gather overhead.

Then you hear it: thunder.

Within minutes, the sky opens up and rain begins pounding the trail. Your vehicle is still some distance away, and there isn’t an obvious building nearby. Where should you go? Is it safer beneath a tree, inside your tent or under a rocky overhang?

Knowing what to do before you’re caught in this situation can help you make safer decisions when the weather suddenly turns.

The Most Important Rule: If You Hear Thunder, Seek Shelter

Thunder means lightning is close enough to pose a danger—even if you haven’t seen a flash or the rain hasn’t reached you yet.

The safest shelter during a thunderstorm is a substantial enclosed building or a hard-topped vehicle with the windows closed. If either is nearby, head there immediately and remain inside.

Open-sided picnic shelters, gazebos, tents and fabric canopies may keep off the rain, but they do not provide protection from lightning.

If you are still close enough to reach your vehicle safely, turn around. Finishing the hike is never worth taking an unnecessary risk.

What If There Isn’t a Building or Vehicle Nearby?

There is no completely safe place outdoors during a thunderstorm. If you cannot reach an enclosed building or hard-topped vehicle, your goal is to reduce your exposure while continuing to look for safer shelter.

Move away from:

• Mountain peaks, ridges and other elevated areas

• Open fields and exposed clearings

• Lakes, ponds, rivers and shorelines

• Tall, isolated trees

• Utility poles, fences and power lines

• Rocky ledges, caves and overhangs

If possible, descend from exposed terrain and move toward a lower forested area containing groups of shorter trees. Avoid standing beside the tallest tree in the area.

A low area may reduce your exposure to lightning, but heavy rain can create another danger: flash flooding. Never settle in a dry creek bed, drainage channel or narrow ravine where water could rise quickly.

Don’t Shelter Beneath an Isolated Tree

Standing beneath a large tree can feel like the obvious choice when heavy rain begins. Unfortunately, an isolated tree is one of the most dangerous places to shelter during lightning.

Lightning often strikes tall objects. Even if the tree takes the direct strike, electricity can travel down its trunk, jump to someone standing nearby or spread through the surrounding ground.

If you are already in a wooded area, look for a lower section containing a group of similarly sized or shorter trees. Keep your distance from isolated trees, damaged branches and anything that could fall in high winds.

A Cave or Rocky Overhang Isn’t Necessarily Safe

A shallow cave or rock ledge may look like perfect shelter from driving rain, but it should not be treated as lightning protection.

Electrical current can travel through wet rock and across the opening of a cave or overhang. Rocky ledges can also expose you to falling debris, runoff and rapidly changing water levels.

The shelter that keeps you dry is not necessarily the shelter that keeps you safe.

Put Down Your Trekking Poles

If you are carrying metal trekking poles, an ice axe or similar equipment, put it down and move away from it.

Metal does not “attract” lightning in the way people sometimes imagine, but it conducts electricity extremely well. You do not want to be holding a conductive object if lightning strikes nearby.

If you are hiking with other people, spread out rather than huddling tightly together. This reduces the chance of ground current travelling between members of the group.

Watch for More Than Lightning

A severe thunderstorm can bring much more than thunder and rain. Strong winds, hail, falling branches, slippery trails and flash flooding may all develop quickly.

If water begins rising across the trail, do not attempt to cross a flooded stream or fast-moving runoff. Water can be deeper and more powerful than it appears. Turn around or move carefully toward higher ground.

At the same time, remain aware of lightning exposure. Avoid climbing onto an open ridge or exposed high point simply to escape rising water. Look for safer terrain that protects you from both hazards.

During strong winds, stay alert for falling limbs and damaged trees. Move away from dead trees and visibly unstable branches.

Wait Before Returning to the Trail

A storm can appear to have passed while lightning remains within striking distance.

Remain in your safe location for at least 30 minutes after the last rumble of thunder. Don’t resume hiking simply because the rain has slowed or you can see brighter skies in the distance.

That extra half-hour may feel long, but it is an important part of lightning safety.

Prepare Before You Leave

The best time to prepare for a thunderstorm is before you step onto the trail.

Check the current forecast, weather alerts and trail conditions. Pay attention to changing conditions throughout the day, especially if you will be hiking in mountains or other exposed terrain.

Before leaving, identify possible shelters near your route and know how long it would take to return to your vehicle.

A small day-hiking kit might include:

• A waterproof or water-resistant outer layer

• An insulating layer

• Drinking water and an extra snack

• A charged phone and portable power bank

• A paper map or downloaded offline map

• A basic first-aid kit

• An emergency whistle

• A small flashlight or headlamp

• Emergency contact information

• A personal locator beacon or satellite messenger for remote trails

Tell someone where you are going, which route you plan to take and when you expect to return.

Most importantly, give yourself permission to change the plan. Turning around early isn’t a failed adventure—it’s good outdoor judgment.

Be Ready for the Unexpected

We head outside because nature is unpredictable, beautiful and a little wild. That unpredictability is also why preparation matters.

Check the forecast, carry the essentials and know where you can seek proper shelter. When thunder begins, act quickly rather than waiting to see whether the storm gets worse.

The goal isn’t to fear changing weather. It’s to recognize it, respect it and make choices that help you return safely for your next adventure.

Choose clothing that helps you move comfortably, prepare for changing conditions and remember: the best adventures are the ones that bring you safely home.

Adventure, Uninterrupted.