Hail in Knox County, TN
Hail turns up in Knox County on a regular basis. NOAA radar has confirmed 9 hail events of 1 inch or larger in Knox County since 2025, the largest 1.5″ (ping pong ball) on September 5, 2026. The most recent confirmed hail was September 5, 2026.
Did hail hit your exact address?
This page covers the whole area. Enter your address to see what NOAA radar detected over your specific roof - free, in seconds.
About Knox County, TN
Knox County sits in the Tennessee Valley of East Tennessee, with Knoxville at its center and the Great Smoky Mountains rising to the southeast. Hail reaches the area fairly often, though the stones generally stay around marble size even in the more active storms. The Knoxville radar (KMRX) stands about 32 miles to the east and keeps the county in view.
The hail record for Knox County, TN
Hail is a recurring threat in Knox County, with 9 confirmed events on record since 2025.
September is the peak, but the broader risk stretches across spring and into early summer.
Common questions
How often does it hail in Knox County?
NOAA radar has confirmed 9 severe hail events (1 inch or larger) in the Knox County area since 2025.
When is hail season in Knox County?
Hail in Knox County is concentrated in September, within a season that runs spring into early summer.
What's the largest hail recorded in Knox County?
Radar confirmed 1.5-inch hail, about ping pong ball size, on September 5, 2026.
Does homeowner's insurance cover hail damage?
Hail is a covered peril under most standard homeowner's policies (typically HO-3), subject to your deductible. Whether you have replacement-cost or actual-cash-value coverage makes a big difference in what's paid out. Your declarations page will say which.
Is Knox County's hail big enough to damage a roof?
It can be. Asphalt shingles can begin showing functional damage in the ¾-to-1-inch range, and Knox County's confirmed hail reaches 1.5″. At these sizes damage is often hard to see from the ground, so whether it's a claimable loss depends on shingle type, age, and an inspection.
Will it hail again in Knox County this year?
Knox County's record already includes more than one confirmed event in a single season. That's what the data shows so far, not a prediction for any given season.
Did it hail in Knox County in 2026?
Yes, 2 confirmed hail events so far in 2026, most recently September 5, 2026.
Recent confirmed hail near Knox County, TN
What this means for your home
Damage can be invisible from the ground
At Knox County's typical sizes, hail often bruises shingles and loosens granules without obvious holes, shortening roof life in ways that are easy to miss until the next storm or an inspection.
Document before you repair
If you suspect hail damage, photograph it and note the storm's date before making any repairs. Undocumented or already-fixed damage is much harder to claim later.
Know your hail deductible
Many policies in hail-prone states use a percentage deductible, often 1–2% of the home's insured value rather than a flat dollar amount. On a $400,000 home that can be $4,000–$8,000 out of pocket before coverage starts, so it's worth checking your declarations page before a storm.
Replacement cost vs. actual cash value
An RCV policy pays to replace your roof at today's prices; an ACV policy subtracts depreciation for the roof's age, which can mean a much smaller check on an older roof. Knowing which you carry shapes what a hail claim is actually worth.
Claims have deadlines
Policies set a deadline for hail-damage claims, and state law may also apply. Windows range from months to several years depending on your state and policy. Knowing the exact date hail hit your address helps you file on time.
Get more than one estimate
After a damaging storm, reputable local roofers get busy and out-of-town crews flood in. Get multiple written estimates and verify licensing and local references before signing anything.
Before you call your insurer
Get the radar evidence for your address.
A NOAA Radar Evidence Report documents exactly what federal radar recorded at your address - hail size, date, and signature - in a formatted PDF you can attach to a claim. Built entirely from public NOAA data.
Events are NOAA/NWS Severe Thunderstorm Warnings with confirmed hail ≥ 1 inch, matched to this county by the warning centroid. Federal public-domain data. A confirmed event indicates radar-detected hail over the area, not a guarantee of damage to any specific property.