Hail Swath Map Preview
The Dayton, OH hail swath map preview was last reviewed on August 27, 2026 and shows mapped hail estimates up to 1.75". There are 2 public hail reports, 12 public wind reports, and 0 nearby tornado reports listed for the August 12, 2021 event.
View the August 12, 2021 Dayton, OH 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 Dayton, OH Hail Map
The August 12, 2021 hail swath map for Dayton, OH covers approximately 992 square miles and includes an estimated 121,066 people inside the mapped footprint. The largest mapped area is in the < 0.50" hail band, covering 370 square miles. The highest estimated population exposure is in the 0.50-0.75" hail band with 42,689 people.
| Mapped Hail Band | Impact Area | Population |
|---|---|---|
| < 0.50" | 370 sq mi | 39,249 |
| 0.50-0.75" | 368 sq mi | 42,689 |
| 0.75-1.00" | 144 sq mi | 30,150 |
| 1.00-1.25" | 68 sq mi | 7,334 |
| 1.25-1.50" | 35 sq mi | 1,443 |
| 1.50-1.75" | 3 sq mi | 113 |
| 1.75-2.00" | 3 sq mi | 88 |
Get a free Hail Report by ZIP to see a more local hail signal and whether the August 12, 2021 Dayton, OH hail event may have reached your area.
Housing Exposure Inside the Dayton, OH Hail Swath Map
Inside the August 12, 2021 hail swath map area for Dayton, OH, HailGeeks estimates 54,439 single-family homes, 4,047 townhomes, and 11,942 multifamily properties within the mapped storm footprint. Single-family-home exposure is highest in the < 0.50" hail band, with 18,388 single-family homes.
| Mapped Hail Band | Single-Family | Townhomes | Multifamily |
|---|---|---|---|
| < 0.50" | 18,388 | 659 | 2,677 |
| 0.50-0.75" | 18,174 | 1,679 | 4,107 |
| 0.75-1.00" | 13,597 | 1,489 | 4,220 |
| 1.00-1.25" | 3,477 | 193 | 917 |
| 1.25-1.50" | 716 | 27 | 21 |
| 1.50-1.75" | 49 | 0 | 0 |
| 1.75-2.00" | 38 | 0 | 0 |
Use this table to review housing exposure by hail band for the August 12, 2021 Dayton, OH hail map. To check a specific property more closely, use a free Hail Report by Address.
Counties Inside the Dayton, OH Hail Map
Hail from the August 12, 2021 storm was mapped across 28 counties in the Dayton, OH region. Clark County, OH had the strongest mapped signal, peaking at 1.75" with roughly 26,548 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 Dayton, OH Hail Map
Zooming in, the swath touched 22 cities near Dayton, OH. Springfield, OH had the strongest mapped signal at 1.00", with an estimated 19,112 single-family homes exposed.
City cards show where the August 12, 2021 Dayton, OH 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 Dayton, OH Hail Swath Map
At the ZIP level, the August 12, 2021 Dayton, OH hail map spans 62 ZIP codes. ZIP 43140 shows the strongest local signal, with mapped hail estimates up to 1.75" and an estimated single-family-home exposure of 4,418.
Check your ZIP in seconds to see whether hail activity from the August 12, 2021 Dayton, OH event was mapped near your area.
Public Hail, Wind, and Tornado Reports
Public storm report tables connected to the August 12, 2021 hail map for Dayton, OH currently list 2 public hail reports, 12 public wind reports, and 0 tornado reports.
| Date & Time | Hail Size | City | State | Description |
|---|---|---|---|---|
August 12, 2021 3:13 PM CT |
1.00 in | 5 NW London | OH | No National Weather Service description provided. |
August 12, 2021 5:13 PM CT |
1.00 in | 5 N Mount Sterling | OH | No National Weather Service description provided. |
| Date & Time | Wind Speed | City | State | Description |
|---|---|---|---|---|
August 12, 2021 3:09 PM CT | 3 E Springfield | OH | TREES DOWN IN HOLIDAY HILLS. TIME ESTIMATED FROM RADAR. | |
August 12, 2021 3:19 PM CT | 2 SSE Springfield | OH | TREES DOWN AT CLARK STATE. TIME ESTIMATED FROM RADAR. | |
August 12, 2021 4:09 PM CT | 3 E London | OH | *** 1 INJ *** TREE FELL ON A VEHICLE NEAR THE INTERSECTION OF SPRINGVALLEY ROAD AND STATE ROUTE 665 LEADING TO ONE INJURY. TIME ESTIMATED USING RADAR DATA. | |
August 12, 2021 4:18 PM CT | 2 NW Lilly Chapel | OH | MULTIPLE TREES DOWN ON WILSON ROAD. TIME ESTIMATED USING RADAR DATA. | |
August 12, 2021 5:02 PM CT | 2 S Big Plain | OH | LARGE TREE DOWN BLOCKING ROADWAY. | |
August 12, 2021 5:05 PM CT | 2 S Big Plain | OH | LARGE TREE DOWN BLOCKING ROADWAY. | |
August 12, 2021 5:05 PM CT | 5 N Mount Sterling | OH | MULTIPLE LARGE TREES DOWN BLOCKING ROADS. | |
August 12, 2021 5:07 PM CT | 3 NNW Derby | OH | MULTIPLE LARGE TREE LIMBS DOWNED IN ROADWAY. | |
August 12, 2021 5:09 PM CT | 6 NNW Mount Sterling | OH | LARGE TREE DOWN. FELL INTO POWER LINES. | |
August 12, 2021 5:13 PM CT | 5 NNW Mount Sterling | OH | LARGE TREE DOWN IN ROADWAY. | |
August 12, 2021 5:19 PM CT | Harrisburg | OH | MULTIPLE LARGE TREE LIMBS DOWN ON US 62. | |
August 12, 2021 6:45 PM CT | 4 WSW Troy | OH | MULTIPLE LARGE TREES DOWN. |
| 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 August 12, 2021 Dayton, OH storm event. When available, each report may include the time, size or magnitude, city, state, and a short description.
Related Hail Maps in the Dayton, OH Region
We found 6 more hail maps with reports from the same Dayton, OH region as the August 12, 2021 event. These related maps cover storm dates from Jul 7, 2021 through Aug 11, 2021, with mapped hail estimates ranging from 0.75" to 1.75". In this set, the strongest related map reached 1.75", and the most recent map shown is from Aug 11, 2021.
If none of these related Dayton, OH 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 Dayton, OH region — so you can check whether hail activity may have reached your property.
Local Hail Review Options Near Dayton, OH
Not sure whether the August 12, 2021 Dayton, OH 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 Dayton, OH 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 August 12, 2021 Dayton, OH event — or another recent hail event — may have been mapped at that address.
Find a roof or exterior pro serving the Dayton, OH 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 August 12, 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 August 12, 2021 hail map visuals alone. They do not confirm property damage and do not replace an on-site inspection for a property in the Dayton, OH 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 August 12, 2021 Dayton, OH hail event.