Storm Damage & Insurance

East Tennessee Hail Season: When It Peaks and What to Do

Updated October 2026 · 5 min read · By the Knoxville Roofing Quotes team

Hail can hit East Tennessee in almost any month, but it isn't random. The National Weather Service office in Morristown, which covers Knoxville, tracks when severe storms happen here, and there's a clear pattern. Here's when hail season peaks around Knoxville, how to find out whether hail actually hit your neighborhood, and what to do about your roof afterward.

Quick answer

Peak hail month: May, according to the NWS in Morristown, with a smaller bump in November
Peak time of day: severe storms here peak in the afternoon, around 4 p.m.
Summer storms are mostly about wind damage rather than hail
After a storm: check official storm reports, document damage from the ground, and get a licensed roofer to inspect

When hail season peaks around Knoxville

The NWS Morristown office's severe weather climatology for East Tennessee shows a few patterns worth knowing:

Large hail peaks in May. There's also a slight second peak in November, when fall storm systems come through.
Tornadoes peak in April, with a slight secondary peak in November.
By June, wind takes over. The dominant severe weather type shifts to wind damage, and most summer severe weather is wind damage rather than hail.
Afternoons are the riskiest time. Tornado, hail and wind events all peak in the afternoon, around 4 p.m.

In practice, spring is when Knoxville-area roofs are most likely to see hail, and summer thunderstorms are more likely to tear off shingles with wind. Fall storms can bring either, though less often.

Did hail actually hit your house?

Hail can be very local. One neighborhood gets pounded while another a few miles away sees rain. Before you assume your roof is fine, or that it's ruined, check what was reported near you:

NOAA Storm Prediction Center storm reports list preliminary hail, wind and tornado reports by day, with locations and hail sizes.
NOAA's Storm Events Database (from the National Centers for Environmental Information) holds the official, finalized record of storm events by county, which is useful if you're filing an insurance claim later.
Your own evidence: dents in gutters, downspouts, mailboxes, window screens and car hoods, plus shredded leaves and granules piled at the bottom of downspouts.

Take photos right away. If you saw hail, photograph the hailstones next to a coin or ruler and note the date and time. That record helps an insurance adjuster and a roofer.

What to check after a hailstorm

Stay off the roof. Wet, damaged shingles are slippery and steep roofs are dangerous. From the ground, look for:

Dents or dings on metal gutters, vents, flashing and downspouts
Piles of shingle granules near downspouts or in gutters
Cracked or missing shingles, or dark spots where granules were knocked off
Damaged siding, window screens or skylights
New water stains on ceilings or in the attic after the next rain

Hail damage to shingles isn't always visible from the ground, so a professional inspection is the reliable next step. Our guide on what hail actually does to shingles explains what roofers look for, and our roof inspection page covers what an inspection should include.

Insurance: don't wait too long

The Tennessee Department of Commerce and Insurance (TDCI) advises filing a claim as soon as possible, because policies can have notification deadlines, and photographing or videoing all the damage. Read your policy for its reporting deadline and how your wind and hail deductible works.

If insurance will pay for the roof, Tennessee law gives you specific contract protections, including a right to cancel if the insurer denies part of the claim. See your rights under Tennessee's roofing insurance law and our step-by-step storm damage claim guide.

Watch out for storm chasers

After a hailstorm, door-to-door roofing crews often show up in affected neighborhoods. TDCI warns homeowners to be wary of door-to-door and phone solicitations for roof repairs and not to be pressured into signing on the spot. Before you hire anyone:

Verify the contractor's Tennessee license with the state's online license search
Get written estimates from more than one roofer
Don't pay more than one-third up front; TDCI says state law limits home improvement deposits to that amount
Ask for proof of insurance

Our guide to roofing scams to avoid covers more warning signs.

Thinking about impact-resistant shingles?

If your roof needs replacing anyway, ask roofers about impact-resistant shingles. These are rated under the UL 2218 impact test, where Class 4 is the highest rating; for Class 4, a 2-inch steel ball is dropped from 20 feet onto the shingle. Insurance discounts for impact-resistant roofs vary by company, so call your insurance agent and ask before you choose a shingle. Compare materials in our roofing materials guide.

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Frequently Asked Questions

What month has the most hail in Knoxville?

May. The National Weather Service office in Morristown, which covers the Knoxville area, says large hail peaks in May, with a slight secondary peak in November.

How do I know if hail hit my area?

Check NOAA's Storm Prediction Center storm reports for the date of the storm, and NOAA's Storm Events Database for the official record by county. Dents in gutters, downspouts and car hoods near your house are good local evidence too.

Should I get my roof inspected after every hailstorm?

If hail was reported near you or you see dents on metal surfaces around your home, an inspection is a good idea. Hail damage to shingles can be hard to spot from the ground and may not leak right away.