Hail Swath Map Preview
The Janesville, WI hail swath map preview was last reviewed on August 28, 2026 and shows mapped hail estimates up to 1.50". There are 15 public hail reports, 4 public wind reports, and 0 nearby tornado reports listed for the April 20, 2023 event.
View the April 20, 2023 Janesville, WI 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 Janesville, WI Hail Map
The April 20, 2023 hail swath map for Janesville, WI covers approximately 326 square miles and includes an estimated 279,978 people inside the mapped footprint. The largest mapped area is in the 0.50-0.75" hail band, covering 121 square miles. The highest estimated population exposure is in the 0.75-1.00" hail band with 104,177 people.
| Mapped Hail Band | Impact Area | Population |
|---|---|---|
| < 0.50" | 113 sq mi | 49,103 |
| 0.50-0.75" | 121 sq mi | 103,980 |
| 0.75-1.00" | 78 sq mi | 104,177 |
| 1.00-1.25" | 8 sq mi | 15,453 |
| 1.25-1.50" | 2 sq mi | 2,699 |
| 1.50-1.75" | 4 sq mi | 4,566 |
Get a free Hail Report by ZIP to see a more local hail signal and whether the April 20, 2023 Janesville, WI hail event may have reached your area.
Housing Exposure Inside the Janesville, WI Hail Swath Map
Inside the April 20, 2023 hail swath map area for Janesville, WI, HailGeeks estimates 99,461 single-family homes, 19,274 townhomes, and 38,263 multifamily properties within the mapped storm footprint. Single-family-home exposure is highest in the 0.50-0.75" hail band, with 38,829 single-family homes.
| Mapped Hail Band | Single-Family | Townhomes | Multifamily |
|---|---|---|---|
| < 0.50" | 18,552 | 2,595 | 4,033 |
| 0.50-0.75" | 38,829 | 6,599 | 15,992 |
| 0.75-1.00" | 35,267 | 7,280 | 15,779 |
| 1.00-1.25" | 5,239 | 1,757 | 996 |
| 1.25-1.50" | 749 | 291 | 362 |
| 1.50-1.75" | 825 | 752 | 1,101 |
Use this table to review housing exposure by hail band for the April 20, 2023 Janesville, WI hail map. To check a specific property more closely, use a free Hail Report by Address.
Counties Inside the Janesville, WI Hail Map
Hail from the April 20, 2023 storm was mapped across 17 counties in the Janesville, WI region. Cook County, IL had the strongest mapped signal, peaking at 1.50" with roughly 28,916 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 Janesville, WI Hail Map
Zooming in, the swath touched 30 cities near Janesville, WI. Hoffman Estates, IL had the strongest mapped signal at 1.50", with an estimated 3,441 single-family homes exposed.
City cards show where the April 20, 2023 Janesville, WI 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 Janesville, WI Hail Swath Map
At the ZIP level, the April 20, 2023 Janesville, WI hail map spans 41 ZIP codes. ZIP 60010 shows the strongest local signal, with mapped hail estimates up to 1.50" and an estimated single-family-home exposure of 5,175.
Check your ZIP in seconds to see whether hail activity from the April 20, 2023 Janesville, WI event was mapped near your area.
Public Hail, Wind, and Tornado Reports
Public storm report tables connected to the April 20, 2023 hail map for Janesville, WI currently list 15 public hail reports, 4 public wind reports, and 0 tornado reports.
| Date & Time | Hail Size | City | State | Description |
|---|---|---|---|---|
April 20, 2023 4:15 PM CT |
1.25 in | Polo | IL | No National Weather Service description provided. |
April 20, 2023 5:06 PM CT |
1.00 in | 3 ESE Loves Park | IL | RELAYED VIA MPING. |
April 20, 2023 5:10 PM CT |
1.00 in | 2 ESE Machesney Park | IL | QUARTER SIZED HAIL BETWEEN LOVES PARK AND ROCK CUT STATE PARK. |
April 20, 2023 5:50 PM CT |
1.00 in | Elgin | IL | PHOTO SHARED TO SOCIAL MEDIA SHOWS QUARTER SIZED HAIL NEAR ELGIN. TIME ESTIMATED BY RADAR. |
April 20, 2023 5:55 PM CT |
1.75 in | 1 NW Hoffman Estates | IL | GOLF BALL SIZED HAIL NEAR HOFFMAN ESTATES. |
April 20, 2023 6:03 PM CT |
1.00 in | 1 NE Streamwood | IL | RELAYED VIA MPING. |
April 20, 2023 6:04 PM CT |
1.25 in | 2 NE Elgin | IL | RELAYED VIA MPING. |
April 20, 2023 6:05 PM CT |
1.25 in | 1 E Schaumburg | IL | HAIL UP TO HALF DOLLAR SIZED IN SCHAUMBURG. |
April 20, 2023 6:07 PM CT |
1.00 in | 1 WSW Kildeer | IL | TRAINED SPOTTER REPORTS QUARTER SIZED HAIL NEAR QUENTIN ROAD AND US12. |
April 20, 2023 6:07 PM CT |
1.00 in | 1 SSE Kildeer | IL | QUARTER SIZED HAIL NEAR RAND ROAD AND LAKE COOK ROAD. |
April 20, 2023 6:09 PM CT |
1.00 in | 1 SSW Long Grove | IL | RELAYED VIA MPING. |
April 20, 2023 6:10 PM CT |
1.00 in | 1 NE Palatine | IL | NWS EMPLOYEE REPORTS QUARTER SIZED HAIL IN PALATINE. |
April 20, 2023 6:17 PM CT |
1.00 in | Barrington | IL | REPORT SHARED TO SOCIAL MEDIA OF QUARTER SIZED HAIL NEAR BARRINGTON. |
April 20, 2023 6:19 PM CT |
1.00 in | 1 NNE Medinah | IL | TIME ESTIMATED BY RADAR. |
April 20, 2023 6:30 PM CT |
1.00 in | 1 SSW Greendale | WI | REPORT FROM MPING: QUARTER (1.00 IN.). |
| Date & Time | Wind Speed | City | State | Description |
|---|---|---|---|---|
April 20, 2023 5:48 PM CT | 4 NNW Hampshire | IL | POSSIBLE TREE DAMAGE ALONG HARMONY ROAD WEST OF US20. RELAYED VIA SOCIAL MEDIA. | |
April 20, 2023 6:06 PM CT | 2 E Richmond | IL | DELAYED REPORT OF A LARGE TREE UPROOTED ON A PROPERTY NEAR INTERSECTION OF ROUTE 173 AND CLARK ROAD. REPORT RELAYED BY PRINT MEDIA. TIME ESTIMATED BY RADAR. | |
April 20, 2023 5:52 PM CT | 58 mph | 2 N Woodstock | IL | EMERGENCY MANAGER REPORTS 58 MPH GUST NEAR WOODSTOCK. |
April 20, 2023 6:21 PM CT | 81 mph | 1 NNW Roselle | IL | PRIVATE WEATHER STATION RECORDED 81 MPH WIND GUST. |
| 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 April 20, 2023 Janesville, WI storm event. When available, each report may include the time, size or magnitude, city, state, and a short description.
Related Hail Maps in the Janesville, WI Region
We found 6 more hail maps with reports from the same Janesville, WI region as the April 20, 2023 event. These related maps cover storm dates from Sep 20, 2022 through Apr 19, 2023, with mapped hail estimates ranging from 0.75" to 2.25". In this set, the strongest related map reached 2.25", and the most recent map shown is from Apr 19, 2023.
If none of these related Janesville, WI 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 Janesville, WI region — so you can check whether hail activity may have reached your property.
Local Hail Review Options Near Janesville, WI
Not sure whether the April 20, 2023 Janesville, WI 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 Janesville, WI 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 April 20, 2023 Janesville, WI event — or another recent hail event — may have been mapped at that address.
Find a roof or exterior pro serving the Janesville, WI 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 April 20, 2023 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 April 20, 2023 hail map visuals alone. They do not confirm property damage and do not replace an on-site inspection for a property in the Janesville, WI 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 April 20, 2023 Janesville, WI hail event.