Lightning kills more campers than any other weather hazard, and the decision that saves lives is made before the storm arrives: where you go, and when. A tent is not shelter. A vehicle is. Knowing that one fact and acting on it early is most of the safety margin.
Warning signs
| Sign | Meaning |
|---|---|
| Thunder | You are within striking distance |
| Dark, towering clouds | Storm building overhead |
| Sudden wind shift | Gust front arriving |
| Hair standing up, tingling skin | Immediate danger: leave now |
| Distant flashes at night | Count the interval |
If you can hear thunder, you are close enough to be struck. That is the whole rule, and it needs no equipment.
The 30-30 rule
| Rule | Action |
|---|---|
| 30 seconds | Flash to thunder under 30 s = 6 mi, take shelter |
| 30 minutes | Wait 30 min after the last thunder before resuming |
| Count method | Seconds ÷ 5 = miles |
The first 30 is a warning; the second 30 is the all-clear. Most injuries happen in the period people think the storm has passed.
Shelter choice
| Shelter | Protection |
|---|---|
| Hard-topped vehicle | Good: metal shell, windows up |
| Substantial building | Best |
| Campground restroom (plumbed) | Good |
| Picnic shelter, open sided | Poor |
| Tent | None |
| Under a tree | Dangerous |
| Open ground | Dangerous |
A car is a Faraday cage: the metal shell carries current around you. Sit inside with windows closed, avoid touching metal, and do not use the radio.
Why a tent is not shelter
| Tent feature | Lightning reality |
|---|---|
| Fabric | No conductivity, no protection |
| Poles | Metal or carbon: a path to ground |
| Low height | Still the tallest object in a flat site |
| Ground sheet | Conducts along wet ground |
A tent offers zero lightning protection and puts you in contact with a conductive frame. Leave it.
Timing
| Stage | Action |
|---|---|
| Storm forecast | Plan an escape route and a shelter before dark |
| First thunder | Move to the vehicle or building |
| Overhead lightning | Stay put; do not run across open ground |
| Last thunder | Wait 30 minutes |
| After | Check for damaged trees, downed lines |
The dangerous moment is the decision delay: people wait to see if it “passes”. It does not pass in five minutes.
During the storm
- Get low, but not under the tallest tree.
- If caught in the open, spread the group out, 15 ft apart.
- Crouch on the balls of your feet, head down, hands off the ground.
- Do not lie flat: ground current is the killer.
- Drop hiking poles, fishing rods, and anything metal.
- Stay out of water and off ridges.
After the storm
| Check | Why |
|---|---|
| Trees overhead | Broken limbs fall later |
| Guy lines and stakes | Storm-loosened |
| Tent poles | Cracked or bent |
| Water level in creeks | Flash flood risk |
| Downed power lines | Assume live |
Flash floods follow the rain, often 30–60 minutes later and miles downstream. Do not return to a creek campsite just because the sky cleared.
Group decisions
A group is slower than a person. Someone is in the tent, someone is at the water tap, someone has the keys. That is why the shelter decision has to be made early and out loud, not when the first flash appears.
Pick a meeting point at the start of the trip: the vehicle, the restroom block, or the camp host’s site. Everyone walks to the same place, and nobody is left counting heads in the rain.
Planning ahead
| Step | Detail |
|---|---|
| Check the forecast | Afternoon storms are predictable in mountains |
| Identify shelter | Vehicle, restroom, or building within 5 min |
| Pitch away from tall trees | And away from the only tall tree |
| Keep the car keys on you | Not in the tent |
| Brief the group | Everyone knows where to go |
The car keys are the detail people forget. A group standing in rain, unable to open the vehicle, is a group in the open.
Fishing rods and paddles
Anything long, wet, or metal is a lightning rod in your hands. Fishing rods, paddles, hiking poles, and golf clubs should be laid down well away from where people are standing, not leaned against a tree beside the group.
This is the detail that catches anglers and paddlers every summer: the storm arrives while the rod is still in hand.
If someone is struck
Call for help, move the person to shelter, and start CPR if they are not breathing. A lightning victim carries no charge and is safe to touch. Most deaths are from cardiac arrest, and immediate CPR is what changes the outcome.
Where to go next
For storm preparation generally, see the storm preparation guide; for the risk plan, the risk assessment guide; for tent weather limits, the weather limits guide.
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