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 2.25". There are 14 public hail reports, 34 public wind reports, and 1 nearby tornado reports listed for the September 7, 2021 event.
View the September 7, 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 September 7, 2021 hail swath map for Chicago, IL covers approximately 3,242 square miles and includes an estimated 1,029,310 people inside the mapped footprint. The largest mapped area is in the 0.50-0.75" hail band, covering 1,269 square miles. The highest estimated population exposure is in the 0.50-0.75" hail band with 355,007 people.
| Mapped Hail Band | Impact Area | Population |
|---|---|---|
| < 0.50" | 873 sq mi | 261,475 |
| 0.50-0.75" | 1,269 sq mi | 355,007 |
| 0.75-1.00" | 680 sq mi | 240,333 |
| 1.00-1.25" | 272 sq mi | 119,172 |
| 1.25-1.50" | 85 sq mi | 39,720 |
| 1.50-1.75" | 34 sq mi | 10,995 |
| 1.75-2.00" | 16 sq mi | 2,141 |
| 2.00-2.25" | 10 sq mi | 400 |
| 2.25-2.50" | 2 sq mi | 67 |
Get a free Hail Report by ZIP to see a more local hail signal and whether the September 7, 2021 Chicago, IL hail event may have reached your area.
Housing Exposure Inside the Chicago, IL Hail Swath Map
Inside the September 7, 2021 hail swath map area for Chicago, IL, HailGeeks estimates 359,605 single-family homes, 49,480 townhomes, and 132,889 multifamily properties within the mapped storm footprint. Single-family-home exposure is highest in the 0.50-0.75" hail band, with 130,103 single-family homes.
| Mapped Hail Band | Single-Family | Townhomes | Multifamily |
|---|---|---|---|
| < 0.50" | 81,622 | 11,386 | 54,351 |
| 0.50-0.75" | 130,103 | 17,275 | 35,001 |
| 0.75-1.00" | 86,312 | 13,426 | 25,792 |
| 1.00-1.25" | 40,665 | 4,677 | 12,584 |
| 1.25-1.50" | 14,604 | 2,152 | 4,443 |
| 1.50-1.75" | 4,702 | 528 | 709 |
| 1.75-2.00" | 1,326 | 29 | 4 |
| 2.00-2.25" | 227 | 7 | 4 |
| 2.25-2.50" | 44 | 0 | 1 |
Use this table to review housing exposure by hail band for the September 7, 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 September 7, 2021 storm was mapped across 16 counties in the Chicago, IL region. McHenry County, IL had the strongest mapped signal, peaking at 2.25" with roughly 57,976 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 140 cities near Chicago, IL. Crystal Lake, IL had the strongest mapped signal at 1.50", with an estimated 6,336 single-family homes exposed.
City cards show where the September 7, 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 September 7, 2021 Chicago, IL hail map spans 101 ZIP codes. ZIP 60033 shows the strongest local signal, with mapped hail estimates up to 2.25" and an estimated single-family-home exposure of 542.
Check your ZIP in seconds to see whether hail activity from the September 7, 2021 Chicago, IL event was mapped near your area.
Public Hail, Wind, and Tornado Reports
Public storm report tables connected to the September 7, 2021 hail map for Chicago, IL currently list 14 public hail reports, 34 public wind reports, and 1 tornado reports.
| Date & Time | Hail Size | City | State | Description |
|---|---|---|---|---|
September 7, 2021 12:32 PM CT |
1.25 in | Delavan | WI | CORRECTS PREVIOUS HAIL REPORT FROM DELAVAN. 1.0 TO 1.25 INCH HAIL REPORTED BY TRAINED SPOTTER. |
September 7, 2021 12:33 PM CT |
1.50 in | 1 N Delavan | WI | MULTIPLE REPORTS OF 1.0 TO 1.5 INCH HAIL REPORTED AROUND DELAVAN WI. |
September 7, 2021 12:44 PM CT |
1.50 in | Williams Bay | WI | PENNY SIZE TO PING PONG BALL SIZE. TIME ESTIMATED FROM RADAR. |
September 7, 2021 12:44 PM CT |
1.00 in | 1 NNE Como | WI | No National Weather Service description provided. |
September 7, 2021 12:46 PM CT |
1.00 in | 1 S Como | WI | No National Weather Service description provided. |
September 7, 2021 12:48 PM CT |
1.00 in | 1 NNW Walworth | WI | No National Weather Service description provided. |
September 7, 2021 12:59 PM CT |
1.50 in | Harvard | IL | TIME ESTIMATED BY RADAR. |
September 7, 2021 1:16 PM CT |
1.00 in | 2 E Richmond | IL | No National Weather Service description provided. |
September 7, 2021 1:20 PM CT |
1.00 in | Spring Grove | IL | No National Weather Service description provided. |
September 7, 2021 1:23 PM CT |
1.00 in | 1 NW Johnsburg | IL | QUARTER SIZE HAIL REPORT FROM MPING. TIME ESTIMATED FROM RADAR. |
September 7, 2021 1:27 PM CT |
1.50 in | Woodstock | IL | No National Weather Service description provided. |
September 7, 2021 1:29 PM CT |
1.00 in | Round Lake | IL | TIME ESTIMATED BY RADAR. LOCATION APPROXIMATED BY WFO BGM... CALLER ONLY GAVE ZIP CODE. |
September 7, 2021 1:30 PM CT |
1.00 in | Round Lake | IL | TIME ESTIMATED FROM RADAR. |
September 7, 2021 6:01 PM CT |
1.00 in | 3 SW Essex | IL | TIME ESTIMATED FROM RADAR. |
| Date & Time | Wind Speed | City | State | Description |
|---|---|---|---|---|
September 7, 2021 1:13 PM CT | Wonder Lake | IL | SMALL TREE ABOUT 6 INCHES IN DIAMETER SNAPPED. TIME ESTIMATED FROM RADAR. | |
September 7, 2021 1:30 PM CT | 2 SSW Prairie Grove | IL | NUMEROUS TREE BRANCHES DOWNED AND SNAPPED... LARGE BRANCH BLOCKING WESTBOUND LANE OF IL-176. TIME ESTIMATED FROM RADAR. | |
September 7, 2021 1:36 PM CT | 1 SSW Island Lake | IL | MULTIPLE LARGE BRANCHES AND TREES DOWN ALONG ROBERTS RD. TIME ESTIMATED FROM RADAR. | |
September 7, 2021 1:42 PM CT | Libertyville | IL | REPORT RELAYED VIA NWS CHAT OF BRANCHES DOWN... UNKNOWN SIZE. TIME ESTIMATED BY RADAR. | |
September 7, 2021 1:45 PM CT | Vernon Hills | IL | 14 INCH DIAMETER TREE SNAPPED AT BASE. TIME ESTIMATED BY RADAR. | |
September 7, 2021 1:54 PM CT | 1 SE Island Lake | IL | PICTURE OF LARGE TREE DOWN AND BLOCKING DARREL RD SOUTH OF IL-176 RELAYED VIA SOCIAL MEDIA. | |
September 7, 2021 1:55 PM CT | Deerfield | IL | VIDEO SHARED ON SOCIAL MEDIA SHOWS PART OF A LARGE TREE GETTING SNAPPED OFF AT ITS TOP. TIME ESTIMATED FROM RADAR. | |
September 7, 2021 1:59 PM CT | Highland Park | IL | PICTURE OF A TREE DOWN NEAR HIGHLAND PARK RELAYED VIA SOCIAL MEDIA. | |
September 7, 2021 2:05 PM CT | Highwood | IL | 20 INCH DIAMETER TREE DOWNED ONTO ROAD. | |
September 7, 2021 2:54 PM CT | 6 NE Seneca | IL | NUMEROUS TREES DOWNED AND ONE SNAPPED IN HALF ALONG US ROUTE 6 BETWEEN MORRIS AND SENECA. POWER POLE ALSO DAMAGED. TIME ESTIMATED FROM RADAR. | |
September 7, 2021 2:55 PM CT | Morris | IL | REPORT OF 16 INCH DIAMETER TREE SNAPPED. TIME ESTIMATED BY RADAR. LOCATION IS APPROXIMATE. | |
September 7, 2021 2:59 PM CT | 3 WSW Plattville | IL | REPORT OF TREE BRANCHES AND LIMBS DOWNED BY WINDS ESTIMATED TO BE 60 TO 65 MPH. | |
September 7, 2021 3:02 PM CT | Minooka | IL | PICTURES OF TREE BRANCHES DOWNED ON A HOUSE VIA SOCIAL MEDIA. TIME ESTIMATED BY RADAR. | |
September 7, 2021 3:07 PM CT | 1 WSW Minooka | IL | REPORT VIA SOCIAL MEDIA OF TRACTOR TRAILERS OVERTURNED AT A COLD STORAGE FACILITY. TIME IS ESTIMATED FROM RADAR. | |
September 7, 2021 3:08 PM CT | 1 NE Channahon | IL | SEVERAL LARGE TREE LIMBS SNAPPED IN CHANNAHON. TIME ESTIMATED FROM RADAR. | |
September 7, 2021 3:10 PM CT | Channahon | IL | CHANNAHON VILLAGE OFFICIAL REPORTS WIDESPREAD DAMAGE TO TREES AND POWERLINES. ESTIMATE OF 100 OR MORE TREES DAMAGED ACROSS THE VILLAGE WITH SOME TREES UPROOTED. A DOZEN OR MORE TREES ON HOUSES. SIDING DAMAGE TO AT LEAST 2 HOUSES. WORST DAMAGE APPEARS TO BE NEAR THE DUPAGE RIVER SOUTHWEST OF THE JUNIOR HIGH SCHOOL. TIME ESTIMATED BY RADAR. | |
September 7, 2021 3:10 PM CT | 2 ENE Channahon | IL | CORRECTS TIME OF PREVIOUS REPORT FROM 2 ENE CHANNAHON. REPORT OF A TREE DOWN ON SB I-55 AT US 6 AND OVERTURNED SEMI TRUCK ON I-55 AT ARSENAL. | |
September 7, 2021 3:15 PM CT | Minooka | IL | SPOTTER REPORTS TREE BRANCHES DOWN. WINDS WERE ESTIMATED TO BE 60 MPH. | |
September 7, 2021 3:18 PM CT | 3 E Elwood | IL | DAMAGE TO BUILDINGS AT A FARM ON THE CORNER OF W HOFF RD AND ROWELL AVE. ALSO TREES UPROOTED AND CORN FLATTENED. TIME ESTIMATED FROM RADAR. | |
September 7, 2021 3:24 PM CT | 1 WNW Manhattan | IL | PICTURE OF UTILITY POLLS SNAPPED AT THE BASE RELAYED VIA SOCIAL MEDIA. TIME IS ESTIMATED FROM RADAR. | |
September 7, 2021 3:40 PM CT | 3 E Peotone | IL | 10 TO 12 POWER POLES DOWNED. | |
September 7, 2021 3:42 PM CT | Peotone | IL | 8 INCH DIAMETER TREE LIMBS DOWNED. TIME ESTIMATED FROM RADAR. | |
September 7, 2021 3:45 PM CT | 1 WSW Kankakee | IL | REPORT OF A 6 TO 12 INCH DIAMETER TREE BRANCH DOWN. | |
September 7, 2021 4:10 PM CT | 2 ENE Channahon | IL | REPORT OF A TREE DOWN ON SB I-55 AT US 6 AND OVERTURNED SEMI TRUCK ON I-55 AT ARSENAL. | |
September 7, 2021 5:25 PM CT | 1 NNE Northbrook | IL | SPOTTER REPORTS MULTIPLE 3 TO 4 INCH BRANCHES DOWN. | |
September 7, 2021 5:58 PM CT | Gardner | IL | REPORTS OF TREES DOWN ON POWER LINES AND POWER LINES DOWN ON ROADWAYS. | |
September 7, 2021 1:29 PM CT | 68 mph | 2 SE Bull Valley | IL | MEASURED ON PERSONAL WEATHER STATION. |
September 7, 2021 1:52 PM CT | 58 mph | 2 SE Wheeling | IL | PWK ASOS PEAK GUST. |
September 7, 2021 2:55 PM CT | 72 mph | 3 E Lisbon | IL | No National Weather Service description provided. |
September 7, 2021 2:55 PM CT | 61 mph | 5 SE Lisbon | IL | WIND GUST OF 61 MPH (53 KTS) REPORTED BY C09 ASOS. |
September 7, 2021 3:02 PM CT | 85 mph | Minooka | IL | AN NWS STORM DAMAGE SURVEY TEAM FOUND WIDESPREAD TREE DAMAGE... INCLUDING NUMEROUS DOWNED... ACROSS MUCH OF AND NEAR MINOOKA. SOME OF THESE TREES WERE DOWNED ON STRUCTURES. THE DAMAGE WAS CONSISTENT WITH THE HIGHEST WIND GUSTS TO AROUND 85 MPH. |
September 7, 2021 3:10 PM CT | 85 mph | Channahon | IL | AN NWS STORM DAMAGE SURVEY TEAM FOUND WIDESPREAD TREE DAMAGE... INCLUDING NUMEROUS DOWNED... ACROSS MUCH OF AND NEAR CHANNAHON. SOME OF THESE TREES WERE DOWNED ON STRUCTURES. THE DAMAGE WAS CONSISTENT WITH THE HIGHEST WIND GUSTS TO AROUND 85 MPH. |
September 7, 2021 3:21 PM CT | 60 mph | Elwood | IL | REPORT OF ESTIMATED WIND GUSTS OF 50 TO 60 MPH WITH SOME TREE LIMBS DOWN. TREE LIMBS ARE ESTIMATED TO BE 2 INCHES IN DIAMETER. |
September 7, 2021 3:42 PM CT | 60 mph | 5 NW Grant Park | IL | TIME ESTIMATED FROM RADAR. |
| Date & Time | Rating | City | State | Description |
|---|---|---|---|---|
September 7, 2021 3:01 PM CT | UNK | 2 NNW Minooka | IL | TWO SPOTTERS REPORTED THAT A BRIEF TORNADO TOUCHED DOWN NORTH OF MINOOKA. TIME ESTIMATED FROM RADAR. |
This table includes only public storm reports connected to the September 7, 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 September 7, 2021 event. These related maps cover storm dates from Aug 19, 2021 through Sep 5, 2021, with mapped hail estimates ranging from 0.75" to 1.25". In this set, the strongest related map reached 1.25", and the most recent map shown is from Sep 5, 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 September 7, 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 September 7, 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 September 7, 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 September 7, 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 September 7, 2021 Chicago, IL hail event.