Hail Swath Map Preview
The Chicago, IL hail swath map preview was last reviewed on August 27, 2026 and shows mapped hail estimates up to 0.75". There are 0 public hail reports, 2 public wind reports, and 8 nearby tornado reports listed for the August 9, 2021 event.
View the August 9, 2021 Chicago, IL 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 Chicago, IL Hail Map
The August 9, 2021 hail swath map for Chicago, IL covers approximately 254 square miles and includes an estimated 66,452 people inside the mapped footprint. The largest mapped area is in the < 0.50" hail band, covering 164 square miles. The highest estimated population exposure is in the < 0.50" hail band with 44,709 people.
| Mapped Hail Band | Impact Area | Population |
|---|---|---|
| < 0.50" | 164 sq mi | 44,709 |
| 0.50-0.75" | 85 sq mi | 21,555 |
| 0.75-1.00" | 4 sq mi | 188 |
Get a free Hail Report by ZIP to see a more local hail signal and whether the August 9, 2021 Chicago, IL hail event may have reached your area.
Housing Exposure Inside the Chicago, IL Hail Swath Map
Inside the August 9, 2021 hail swath map area for Chicago, IL, HailGeeks estimates 23,819 single-family homes, 3,844 townhomes, and 5,445 multifamily properties within the mapped storm footprint. Single-family-home exposure is highest in the < 0.50" hail band, with 16,006 single-family homes.
| Mapped Hail Band | Single-Family | Townhomes | Multifamily |
|---|---|---|---|
| < 0.50" | 16,006 | 2,756 | 4,335 |
| 0.50-0.75" | 7,725 | 1,088 | 1,109 |
| 0.75-1.00" | 88 | 0 | 1 |
Use this table to review housing exposure by hail band for the August 9, 2021 Chicago, IL hail map. To check a specific property more closely, use a free Hail Report by Address.
Counties Inside the Chicago, IL Hail Map
Hail from the August 9, 2021 storm was mapped across 7 counties in the Chicago, IL region. Cook County, IL had the strongest mapped signal, peaking at 0.75" with roughly 11,006 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 Chicago, IL Hail Map
Zooming in, the swath touched 12 cities near Chicago, IL. Carpentersville, IL had the strongest mapped signal at 0.50", with an estimated 4,942 single-family homes exposed.
City cards show where the August 9, 2021 Chicago, IL 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 Chicago, IL Hail Swath Map
At the ZIP level, the August 9, 2021 Chicago, IL hail map spans 9 ZIP codes. ZIP 60010 shows the strongest local signal, with mapped hail estimates up to 0.75" and an estimated single-family-home exposure of 3,900.
Check your ZIP in seconds to see whether hail activity from the August 9, 2021 Chicago, IL event was mapped near your area.
Public Hail, Wind, and Tornado Reports
Public storm report tables connected to the August 9, 2021 hail map for Chicago, IL currently list 0 public hail reports, 2 public wind reports, and 8 tornado reports.
| Date & Time | Hail Size | City | State | Description |
|---|---|---|---|---|
| No public hail reports are available for this event. | ||||
| Date & Time | Wind Speed | City | State | Description |
|---|---|---|---|---|
August 9, 2021 4:40 PM CT | 1 ESE Mccullom Lake | IL | DAMAGE TO PORCHES ALONG EVERGREEN CIRCLE IN MCHENRY. TIME ESTIMATED BY RADAR. | |
August 9, 2021 5:26 PM CT | 2 WSW Burlington | IL | KANE COUNTY SHERIFFS OFFICE REPORTS DAMAGE TO A STRUCTURE ALONG PLANK ROAD NEAR EAGLE ROAD. POSSIBLE TORNADO. TIME ESTIMATED BY RADAR. |
| Date & Time | Rating | City | State | Description |
|---|---|---|---|---|
August 9, 2021 4:48 PM CT | UNK | 1 N Mchenry | IL | MCHENRY PD REPORTS POSSIBLE TORNADO NEAR BLAKE ROAD AND RICHMOND ROAD IN MCHENRY. |
August 9, 2021 5:26 PM CT | UNK | 2 WSW Burlington | IL | CORRECTS AND UPDATES PREVIOUS TSTM WND DMG REPORT FROM 2 WSW BURLINGTON. KANE COUNTY SHERIFFS OFFICE REPORTS DAMAGE TO A STRUCTURE ALONG PLANK ROAD NEAR EAGLE ROAD. CONFIRMED TORNADO WITH THIS DAMAGE GIVEN TORNADO DEBRIS SIGNATURE ON KLOT FROM ABOUT 5:24 PM UNTIL 5:33 PM. TIME ESTIMATED BY RADAR. |
August 9, 2021 6:13 PM CT | UNK | 2 SSE Sycamore | IL | TV CREW REPORTS DAMAGE TO TREES AND POWER LINES NEAR BETHANY ROAD AND FENSTERMAKER ROAD NEAR SYCAMORE. TIME ESTIMATED BY RADAR. |
August 9, 2021 6:17 PM CT | UNK | 2 SE Sycamore | IL | TORNADO ON THE GROUND EAST OF SPOTTER AT BETHANY ROAD AND IL-23. |
August 9, 2021 6:18 PM CT | UNK | 4 ESE Sycamore | IL | TORNADO ON THE GROUND EAST OF SYCAMORE. POSSIBLE DAMAGE TO STRUCTURES. |
August 9, 2021 6:31 PM CT | UNK | 1 S Virgil | IL | RAIN-WRAPPED TORNADO REPORTED NEAR BEITH ROAD AND MEREDITH ROAD. |
August 9, 2021 6:44 PM CT | UNK | 1 ESE Lily Lake | IL | MULTIPLE REPORTS OF A WEAK TORNADO NEAR LILY LAKE. |
August 9, 2021 6:58 PM CT | UNK | 1 WSW Campton Hills | IL | MULTIPLE REPORTS OF A BRIEF TORNADO NEAR CAMPTON HILLS. |
This table includes only public storm reports connected to the August 9, 2021 Chicago, IL storm event. When available, each report may include the time, size or magnitude, city, state, and a short description.
Related Hail Maps in the Chicago, IL Region
We found 6 more hail maps with reports from the same Chicago, IL region as the August 9, 2021 event. These related maps cover storm dates from Jun 30, 2021 through Aug 7, 2021, with mapped hail estimates ranging from 0.75" to 1.00". In this set, the strongest related map reached 1.00", and the most recent map shown is from Aug 7, 2021.
If none of these related Chicago, IL 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 Chicago, IL region — so you can check whether hail activity may have reached your property.
Local Hail Review Options Near Chicago, IL
Not sure whether the August 9, 2021 Chicago, IL 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 Chicago, IL 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 9, 2021 Chicago, IL event — or another recent hail event — may have been mapped at that address.
Find a roof or exterior pro serving the Chicago, IL 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 9, 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 9, 2021 hail map visuals alone. They do not confirm property damage and do not replace an on-site inspection for a property in the Chicago, IL 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 9, 2021 Chicago, IL hail event.