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Guide

How Hail and Straight-Line Wind Show Up on an Asphalt Roof

What dated National Weather Service warnings for Cleveland County say about hail and wind, how each marks a shingle roof, and when to have it looked at.

Illustration for the guide "How Hail and Straight-Line Wind Show Up on an Asphalt Roof" (Lawndale, NC)
Short answer

Hail and straight-line wind mark a roof in different ways. Hail bruises and fractures shingles and dents metal, while wind creases, lifts and strips shingles, mostly at the edges and the ridge. Warnings for Cleveland County have cited golf-ball-size hail and gusts of 60 mph. Those are forecasts, not damage surveys.

Key takeaways

  • A warning for south-eastern Cleveland County on May 8, 2025 carried golf-ball-size hail and 60 mph gusts, with hail damage to roofs expected.
  • Warnings on June 25 and July 1, 2025 carried 60 mph gusts and nickel-size hail, with damage to trees and power lines.
  • Those warnings describe what forecasters expected, so they show a storm's capability rather than what happened to any particular roof.
  • Hail can bruise asphalt shingle from underneath, and a surface look can miss damage that a close inspection would find.
  • Wind creases and lifts shingles, and the edges, the ridge and the corners usually show it first.
  • A roof that sat under a warned storm is worth a look, even when the damage is not obvious from the ground.

What did the warnings for this county actually cite?

Warnings for Cleveland County have carried golf-ball-size hail and 60 mph gusts, and older bulletins cited quarter-size hail.

On May 8, 2025, a National Weather Service warning for south-eastern Cleveland County carried golf-ball-size hail and 60 mph gusts, and it said hail damage to roofs, siding, windows and vehicles was expected. Warnings on June 25 and July 1, 2025 carried 60 mph gusts and nickel-size hail, with damage to trees and power lines. Older Greenville-Spartanburg bulletins for the county cited 60 mph gusts and quarter-size hail, so the pattern of severe storms here is not new.

These are warnings, so they describe what the forecaster expected and what the storm was capable of producing. A warning does not say that any particular roof was damaged, and it does not count the roofs that were. Use the dates to decide when a roof should be looked at, not as proof of what happened on a given street or to a given house.

Why does hail matter on a shingle roof?

Hail hits the granules and the mat under them, and the damage can sit underneath, where it is not visible from the ground.

Asphalt shingle is a mat coated with mineral granules. Hail can knock granules loose, crack the mat, or bruise it so that the shingle feels soft in one spot. Some of that shows up as bare patches or dark marks on the surface. Some of it shows only when the shingle is flexed gently or when a technician looks at the back of the piece, which is why a casual look from the ground is not enough to rule damage in or out.

Hail can also dent metal vents, flashing, gutters and ridge caps, and those dents are easy to see from the ground. A dented vent can be a sign that the shingles near it took the same hits, so the metal parts are a useful clue. Looking at both the metal and the shingle gives a more complete picture than checking either one alone, and it helps a technician decide where to look more closely.

What does wind do to shingles?

Straight-line wind creases and lifts shingles, starting at the edges, corners and ridge, where it grabs hardest.

Wind gets under a shingle's edge and lifts it, and a lifted tab can crease where it bends back against the course above. Once a tab is creased or missing, water can get under the next course and find the nails. Edges and corners tend to show wind damage first, and the ridge is a frequent place to look after a strong gust, because the wind loads it from more than one side.

Open farm country lets straight-line wind reach a roof with nothing to slow it. A house surrounded by trees and other buildings gets some shelter, while a house in an open field does not. That exposure is one reason an open rural roof can take more wind than a roof in town. Check the ridge, the rake edges and the corners after a wind warning, and photograph anything that looks lifted or displaced.

Can a tornado reach a roof out here?

Yes, though rarely. An April 2011 tornado hit a rural part of Cleveland County north of Shelby with winds of about 80 mph.

A regional news report of the National Weather Service survey described an April 2011 tornado in a rural part of Cleveland County, north of Shelby, with maximum winds of about 80 mph. The storm overturned mobile homes and blew the roof off a shed. That is a documented example of the risk, and it is a reason to keep the roof and the outbuildings in view after any severe storm rather than assuming the house is out of reach.

Tornado damage and hail damage look different on a roof. Tornado damage usually shows as missing sections, debris and displaced panels, while hail often shows as a scatter of marks across many shingles. A technician who is looking at a roof after a storm can usually tell which one happened, and that distinction matters when the insurance conversation starts, because it changes what the adjuster will want to see.

How do I tell hail damage from ordinary wear?

A look from the ground cannot separate hail from age, so a technician checks the shingles up close and compares the damage across the whole roof.

Hail marks tend to be scattered and round, and they often appear on the slopes that faced the storm. Wear from sun and age looks different. It shows as fairly even granule loss, cracking and curling that build up over the years, and it is usually worst on the south- and west-facing slopes, where the sun does the most work. The two can look alike from the ground, which is why the same roof may need a close look before anyone decides what caused what.

The sensible approach is to note the date of any storm warning, photograph the roof and the gutters from the ground, and ask for a written look from a technician. Dates and photographs make the next conversation clearer, both for the homeowner and for anyone who reviews the claim later. A written look that describes what was seen and where is more useful than a verbal opinion given on a driveway.

When should a roof get a look?

After a warned storm, after a visible loss, or before buying an older house, a written look is worth the time.

A roof does not need to show a leak before someone checks it. A look is worth scheduling after a warned hail or wind event, after a large limb comes down near the roof, or when granules show up in the gutters in noticeable amounts. Older farmhouses often change hands with little inspection, so a condition look before buying one is a sensible step that costs little compared with the house itself.

A written look should describe what was seen and where it was seen, without promising any outcome. It is a condition report, not a decision about a claim. Whether an insurer pays for any repair is a question for the policy and the adjuster, and a technician can provide the written description that the adjuster will need to see.

What do the metal parts of the roof tell me?

Metal flashing, vents and gutters show hail dents easily, and they are useful indicators even when the shingles look fine from below.

Metal dents show what hit the roof. A ridge vent or a flashing piece that is dented on one side points toward the direction and the force of the storm, and the shingles nearby deserve a closer look. Gutters dented along one run often show where hail was heaviest on the house, which is useful when a technician is deciding where to start the close inspection.

A metal dent does not always mean the roof below has failed, so it should be read as a marker rather than a verdict. The technician's job is to check the layer under the dent, including the shingles and the decking, before deciding anything. Photographing the dents from a few steps back helps place the damage on the house, and it gives the next person who looks a clear reference.

What can I do before the roof is looked at?

Document what you can safely see, keep the gutters clear, and cover openings with a tarp only if it is safe to do so.

Photograph the roof from the ground, along with the gutters, the metal parts and any debris, and keep the photos with their dates. Keep a simple log of the storm warnings and the days they covered, because the dates are useful later when the story of the storm needs to be told. Do not climb onto a damaged roof to check it yourself, and do not walk under a limb that is still hanging over the eaves.

If there is an opening in the roof, a tarp can keep rain out until a repair is made. The state's storm advice is to cover roof or wall holes with a tarp if it is safe to do so, and the insurance guide on this site covers the rest of that checklist. Call (833) 751-2102 to arrange a look, and a technician will explain what the next step is for your roof and what to record before it is changed.

Frequently asked questions

Does a hail warning mean my roof was damaged?

Not on its own. A warning describes what forecasters expected and what the storm could produce, not what happened to a particular house. The only way to know is a close look at the shingles, the metal parts and the gutters. Photograph the roof from the ground first, and note the date of the warning.

Can hail damage be hidden under the shingles?

It can. Hail can bruise the mat or crack the granules in a way that does not show from the ground. A technician checks the shingles up close and looks at the back of pieces where needed. Some damage shows only when the shingle is flexed gently, which is why a casual look is not enough.

What does wind damage look like on shingles?

The usual signs are shingles that are creased, lifted, torn or missing, most often at the edges, the corners and the ridge. A lifted tab can let water reach the nails underneath. Look for displaced pieces on the ground and gaps in the roof lines after a strong wind event.

Should I wait until I see a leak?

No. A leak is often a late sign of damage that began earlier. A look after a warned storm, or after a large limb or a visible loss, can catch problems before water gets in. Waiting for a stain on the ceiling usually means the damage has been there for a while.

Does a tornado warning mean the same thing as a hail warning?

No. Tornado damage usually shows as missing sections, debris and displaced panels, while hail often shows as a scatter of marks across many shingles. The two are different events with different signs, and a technician can usually tell which one happened after looking at the roof.

Is a written look from a technician useful?

Yes. A written description of what was seen and where it was seen gives you a record that is useful for your own files and for anyone who reviews a claim later. It does not promise any outcome. Ask for the description to include photographs and the date of the look.

Sources

  1. North Carolina Department of Justice

This guide is general information for Cleveland County homeowners, not a substitute for an on-site inspection. Prices are estimates. See our disclaimer.

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