Hail Swath Map Preview
The Knoxville, TN hail swath map preview was last reviewed on August 27, 2026 and shows mapped hail estimates up to 0.75". There are 3 public hail reports, 0 public wind reports, and 0 nearby tornado reports listed for the March 18, 2021 event.
View the March 18, 2021 Knoxville, TN hail event on the free interactive hail map, then check a free Hail Report by ZIP to see a more local hail signal for your area.
Impact Area and Population for the Knoxville, TN Hail Map
The March 18, 2021 hail swath map for Knoxville, TN covers approximately 66 square miles and includes an estimated 2,185 people inside the mapped footprint. The largest mapped area is in the < 0.50" hail band, covering 37 square miles. The highest estimated population exposure is in the < 0.50" hail band with 1,528 people.
| Mapped Hail Band | Impact Area | Population |
|---|---|---|
| < 0.50" | 37 sq mi | 1,528 |
| 0.50-0.75" | 22 sq mi | 520 |
| 0.75-1.00" | 7 sq mi | 137 |
Get a free Hail Report by ZIP to see a more local hail signal and whether the March 18, 2021 Knoxville, TN hail event may have reached your area.
Housing Exposure Inside the Knoxville, TN Hail Swath Map
Inside the March 18, 2021 hail swath map area for Knoxville, TN, HailGeeks estimates 1,041 single-family homes, 23 townhomes, and 140 multifamily properties within the mapped storm footprint. Single-family-home exposure is highest in the < 0.50" hail band, with 681 single-family homes.
| Mapped Hail Band | Single-Family | Townhomes | Multifamily |
|---|---|---|---|
| < 0.50" | 681 | 18 | 131 |
| 0.50-0.75" | 284 | 4 | 7 |
| 0.75-1.00" | 76 | 1 | 2 |
Use this table to review housing exposure by hail band for the March 18, 2021 Knoxville, TN hail map. To check a specific property more closely, use a free Hail Report by Address.
Counties Inside the Knoxville, TN Hail Map
Hail from the March 18, 2021 storm was mapped across 4 counties in the Knoxville, TN region. Claiborne County, TN had the strongest mapped signal, peaking at 0.75" with roughly 182 single-family homes inside the swath.
County pages group every mapped hail event in the area. For a closer look, drop to the city or ZIP level below, or run a free Hail Report by Address.
Cities Inside the Knoxville, TN Hail Map
Zooming in, the swath touched 0 cities near Knoxville, TN.
City cards show where the March 18, 2021 Knoxville, TN hail activity was mapped, but your ZIP can show a closer local signal. Get a free Hail Report by ZIP, and if the signal looks meaningful, ask a local pro about a Remote Hail Inspection to see whether an on-site roof or exterior review may be worth scheduling.
ZIP Codes Inside the Knoxville, TN Hail Swath Map
At the ZIP level, the March 18, 2021 Knoxville, TN hail map spans 3 ZIP codes. ZIP 37879 shows the strongest local signal, with mapped hail estimates up to 0.75" and an estimated single-family-home exposure of 182.
Check your ZIP in seconds to see whether hail activity from the March 18, 2021 Knoxville, TN event was mapped near your area.
Public Hail, Wind, and Tornado Reports
Public storm report tables connected to the March 18, 2021 hail map for Knoxville, TN currently list 3 public hail reports, 0 public wind reports, and 0 tornado reports.
| Date & Time | Hail Size | City | State | Description |
|---|---|---|---|---|
March 18, 2021 2:05 PM CT |
1.00 in | Tazewell | TN | ESTIMATES FROM PEA TO QUARTER SIZE HAIL ACROSS TAZEWELL. |
March 18, 2021 2:25 PM CT |
1.00 in | 3 NNE Howard Quarter | TN | QUARTER SIZED HAIL NEAR THE CLAIBORNE/HANCOCK COUNTY LINE. |
March 18, 2021 2:25 PM CT |
1.00 in | 3 NNE Howard Quarter | TN | QUARTER SIZED HAIL ESTIMATED AT THE CLAIBORNE/HANCOCK COUNTY LINE. |
| Date & Time | Wind Speed | City | State | Description |
|---|---|---|---|---|
| No public wind reports are available for this event. | ||||
| Date & Time | Rating | City | State | Description |
|---|---|---|---|---|
| No public tornado reports are available for this event. | ||||
This table includes only public storm reports connected to the March 18, 2021 Knoxville, TN storm event. When available, each report may include the time, size or magnitude, city, state, and a short description.
Related Hail Maps in the Knoxville, TN Region
We found 0 more hail maps with reports from the same Knoxville, TN region as the March 18, 2021 event.
If none of these related Knoxville, TN hail maps look close enough to your property, check a free Hail Report by Address. It reviews hail history for a specific location — not just the broader Knoxville, TN region — so you can check whether hail activity may have reached your property.
Local Hail Review Options Near Knoxville, TN
Not sure whether the March 18, 2021 Knoxville, TN hail map matters for your property? Start with a free Hail Report by Address to see whether hail activity was mapped for that property. If the property signal looks meaningful, you can choose a local pro serving the Knoxville, TN region and ask about a Remote Hail Inspection before deciding whether an on-site roof or exterior review is worth scheduling.
Check a specific property to see whether hail activity from the March 18, 2021 Knoxville, TN event — or another recent hail event — may have been mapped at that address.
Find a roof or exterior pro serving the Knoxville, TN region who can help you understand what the property hail signal may mean.
A participating local pro reviews property-level hail history remotely — not just the March 18, 2021 event — to help decide whether an on-site inspection may be worth scheduling.
A free Hail Report by Address and a Remote Hail Inspection can help you look beyond the March 18, 2021 hail map visuals alone. They do not confirm property damage and do not replace an on-site inspection for a property in the Knoxville, TN region, but they can help you make a more informed next decision before anyone climbs on the roof.
Frequently Asked Questions
Common questions about the March 18, 2021 Knoxville, TN hail event.