Will a tree always die if it is struck by lightning?

No. Some trees survive a strike, especially if only a narrow strip of bark and sapwood was damaged and the rest of the cambium is intact. Others are killed outright or decline over the following seasons. The amount of the trunk circumference affected, the species, and the tree's prior health all matter, which is why a strike should be evaluated on site rather than judged from the outside alone.

How can you tell lightning damage from storm wind damage?

Lightning typically blows a continuous strip of bark off and splits the wood in a roughly vertical channel running down the trunk toward the ground, sometimes with a matching exit point at the base or roots. Storm wind instead snaps and tears limbs, fails branch unions, or uproots the tree. A long vertical furrow of exposed sapwood down the stem is the classic lightning signature.

Should a lightning-struck tree be removed?

Not always, but often it needs at least a hazard assessment. A tree with major cambium loss around the trunk, structural cracks, or hanging broken limbs over a house or driveway can be a removal candidate. A weak-wooded, short-lived species such as Arizona ash is more likely to be removed than a sound, high-value tree with limited damage. A certified arborist can weigh the damage against the target below and recommend save or remove.

Storm Damage • Central Texas

Your tree was struck by lightning

A long strip of bark blown clean off the trunk, fresh wood exposed top to bottom: that is the signature of a lightning strike, not ordinary storm wind. Some of these trees pull through. Some are now a hazard over your roof. Here is how to tell the difference and what to do first.

Get it assessed → Call 512-800-3566

Vertical furrowThe lightning signature

Sometimes savedIt depends on the damage

Assess firstBefore any cutting

A residential Arizona ash with a long vertical strip of bark blown off the trunk by a lightning strike

Field photo

A continuous vertical channel of bark and wood blown off the full length of an Arizona ash trunk

What actually happened

Why the bark blew off

When lightning hits a tree, it follows the path of least resistance, usually the moist layer just under the bark. The current flashes the sap there to steam almost instantly, and the pressure blows the bark and outer wood off in a strip running down the trunk toward the ground.

That exposed channel is the wound. Whether the tree lives comes down to how much of the cambium, the thin living layer that moves water and food, was destroyed around the circumference. A narrow strip can heal over. A strike that girdles most of the trunk usually does not.

Tell them apart

Lightning or storm wind

They both show up after the same Texas thunderstorm, but the damage looks different and points to different risks.

Lightning

A channel down the trunk

A continuous, roughly vertical strip of bark blown off the stem
Fresh exposed sapwood running toward the ground
Sometimes a matching exit wound at the base or over the roots
Splintered, blown-apart wood rather than a clean break

Storm wind

Broken and torn limbs

Snapped branches and failed branch unions
Tearing at the attachment, not a strip down the trunk
Whole-tree lean or uprooting in saturated soil
Hangers and widow-makers caught in the canopy

From the field

One strike, top to bottom

The same Central Texas Arizona ash (Fraxinus velutina), photographed after a strike. The current ran from the canopy to the ground.

A scaffold limb in the canopy split and splintered where the lightning entered — Up top, a scaffold limb split and blown apart where the strike entered the crown.

The lightning channel running down the main stem of the Arizona ash — The channel tracks down the main stem, bark gone and sapwood exposed the whole way.

The base of the struck trunk beside a house, flagged for assessment — At the base, beside the house, flagged for an on-site hazard assessment.

First, stay safe

Treat it as a hazard until it is checked

Keep people and cars out from under the tree. Assume any limb hung up in the canopy can still come down, and never touch a tree that is contacting a power line, call the utility. A fresh strike can leave cracks you cannot see from the ground, so the safest move is to keep the area clear until it has had a documented tree risk assessment by a qualified arborist.

Can it be saved

Save it, or take it down

There is no single answer from a photo. It comes down to how much living tissue is left, the structure that remains, and what sits under the tree. These are the signals I weigh on site.

Leans toward saving

A narrow strip of damage, most of the trunk's cambium still intact
No major structural crack running deep into the stem
A sound, high-value tree that was healthy before the strike
Nothing valuable directly under the canopy if a limb did fail

Leans toward removal

Damage wrapping most of the trunk, effectively girdling it
Deep cracks, or broken limbs hanging over a roof or driveway
A weak-wooded, short-lived species like Arizona ash already in decline
A target below, a house, cars, a walkway, that raises the stakes

Lightning hit one of your trees? Let's look before you cut

Send me photos of the trunk and the canopy and I will tell you whether you are likely looking at a tree that can be saved or one that needs to come down, and how urgent it is.

Request an assessment → How a risk assessment works →

This page is educational and does not assess any specific tree. A lightning or storm damaged tree should be evaluated in person, and any tree contacting a power line is an emergency for the utility, not a do-it-yourself job. When a damaged tree threatens people or property, have it assessed on site before deciding to save or remove it.