Hail in Grainger County, TN
NOAA radar has confirmed 3 hail events of 1 inch or larger in Grainger County since 2025, the largest 1.5″ (ping pong ball) on September 4, 2025. The most recent confirmed hail was July 28, 2026.
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About Grainger County, TN
Grainger County sits in the Valley and Ridge province of East Tennessee, a land of long parallel ridges and the broad waters of Cherokee Lake. Hail is uncommon in this terrain, where the ridges tend to break up warm-season storms before they organize and stones usually stay small. The Knoxville (KMRX) radar is close by, about 10 miles to the southeast, so the county sits within excellent radar reach.
The hail record for Grainger County, TN
This year has run hot: 2 confirmed events in 2026 already, ahead of the recent pace.
Rather than a single peak, hail turns up from spring through summer in Grainger County, most often in March.
Grainger County is no Plains hot spot, but the storms that do reach it have still dropped hail up to 1.5″.
Common questions
How often does it hail in Grainger County?
NOAA radar has confirmed 3 severe hail events (1 inch or larger) in the Grainger County area since 2025.
When is hail season in Grainger County?
Grainger County sees hail from spring into early summer, most often in March.
What's the largest hail recorded in Grainger County?
Radar confirmed 1.5-inch hail, about ping pong ball size, on September 4, 2025.
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 Grainger 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 Grainger 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.
Is hail getting worse in Grainger County?
Nationally, the research on long-term hail trends is mixed. Better radar coverage since the 1990s makes real increases hard to separate from improved detection. In Grainger County, 2 confirmed events have been recorded in 2026 so far, but the tracked record is still short, so it isn't evidence of a lasting trend.
Did it hail in Grainger County in 2026?
Yes, 2 confirmed hail events so far in 2026, most recently July 28, 2026.
Recent confirmed hail near Grainger County, TN
What this means for your home
Damage can be invisible from the ground
At Grainger 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.
Keep a 'before' record
Photos of your roof and exterior in good condition make new hail damage much easier to prove later. A few shots now, before the next storm, can save an argument with an adjuster over what's old wear and what's storm damage.
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.
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.