Hail Swath Map Preview
The Janesville, WI hail swath map preview was last reviewed on August 30, 2026 and shows mapped hail estimates up to 1.50". There are 6 public hail reports, 13 public wind reports, and 2 nearby tornado reports listed for the April 2, 2026 event.
View the April 2, 2026 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 2, 2026 hail swath map for Janesville, WI covers approximately 327 square miles and includes an estimated 77,690 people inside the mapped footprint. The largest mapped area is in the < 0.50" hail band, covering 146 square miles. The highest estimated population exposure is in the < 0.50" hail band with 19,676 people.
| Mapped Hail Band | Impact Area | Population |
|---|---|---|
| < 0.50" | 146 sq mi | 19,676 |
| 0.50-0.75" | 118 sq mi | 14,361 |
| 0.75-1.00" | 35 sq mi | 16,680 |
| 1.00-1.25" | 12 sq mi | 13,185 |
| 1.25-1.50" | 9 sq mi | 8,092 |
| 1.50-1.75" | 7 sq mi | 5,696 |
Get a free Hail Report by ZIP to see a more local hail signal and whether the April 2, 2026 Janesville, WI hail event may have reached your area.
Housing Exposure Inside the Janesville, WI Hail Swath Map
Inside the April 2, 2026 hail swath map area for Janesville, WI, HailGeeks estimates 29,204 single-family homes, 2,820 townhomes, and 12,602 multifamily properties within the mapped storm footprint. Single-family-home exposure is highest in the < 0.50" hail band, with 8,218 single-family homes.
| Mapped Hail Band | Single-Family | Townhomes | Multifamily |
|---|---|---|---|
| < 0.50" | 8,218 | 812 | 2,417 |
| 0.50-0.75" | 4,997 | 550 | 1,420 |
| 0.75-1.00" | 6,816 | 542 | 2,602 |
| 1.00-1.25" | 5,520 | 352 | 2,818 |
| 1.25-1.50" | 2,981 | 418 | 1,736 |
| 1.50-1.75" | 672 | 146 | 1,609 |
Use this table to review housing exposure by hail band for the April 2, 2026 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 2, 2026 storm was mapped across 12 counties in the Janesville, WI region. Rock County, WI had the strongest mapped signal, peaking at 1.50" with roughly 20,089 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 8 cities near Janesville, WI. Whitewater, WI had the strongest mapped signal at 1.50", with an estimated 1,485 single-family homes exposed.
City cards show where the April 2, 2026 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 2, 2026 Janesville, WI hail map spans 22 ZIP codes. ZIP 53190 shows the strongest local signal, with mapped hail estimates up to 1.50" and an estimated single-family-home exposure of 1,834.
Check your ZIP in seconds to see whether hail activity from the April 2, 2026 Janesville, WI event was mapped near your area.
Public Hail, Wind, and Tornado Reports
Public storm report tables connected to the April 2, 2026 hail map for Janesville, WI currently list 6 public hail reports, 13 public wind reports, and 2 tornado reports.
| Date & Time | Hail Size | City | State | Description |
|---|---|---|---|---|
April 2, 2026 5:48 PM CT |
1.50 in | Mount Carroll | IL | Social media picture of quarter to ping pong size hail. Relayed by media. |
April 2, 2026 6:19 PM CT |
1.25 in | 1 WNW Janesville | WI | Hail at Mercy Hospital. |
April 2, 2026 6:22 PM CT |
1.50 in | 2 NNE Janesville | WI | No National Weather Service description provided. |
April 2, 2026 6:41 PM CT |
2.00 in | 2 W Whitewater | WI | No National Weather Service description provided. |
April 2, 2026 7:02 PM CT |
1.00 in | 2 W Whitewater | WI | Report from mPING: Quarter (1.00 in.). |
April 2, 2026 7:07 PM CT |
1.25 in | Horicon | WI | Facebook report of measured hail 1.25 inch with photo. |
| Date & Time | Wind Speed | City | State | Description |
|---|---|---|---|---|
April 2, 2026 6:13 PM CT | 1 ENE Center Hill | IL | A few trees reported down west of Mount Carroll. | |
April 2, 2026 6:25 PM CT | Fayette | WI | Tree down reported by Lafayette County dispatchers. Time estimated by radar. | |
April 2, 2026 6:44 PM CT | 2 SSE Davis Junction | IL | Trees and power lines down on Hwy 251 between Big Mound Rd and Holcomb Rd. Grain bin destroyed. | |
April 2, 2026 6:46 PM CT | 3 S Davis Junction | IL | Grain elevator down on train tracks. Trees and power lines also down in the area. Time estimated from radar. | |
April 2, 2026 6:50 PM CT | 1 WNW Monroe Center | IL | Roof or other structural material on road. Also downed tree at farm just east of I-39. Reported by retired NWS employee. Time estimated from radar. | |
April 2, 2026 6:57 PM CT | 2 WNW Palmyra | WI | Jefferson County Dispatch reports tree down on Power Line north of Palmyra. | |
April 2, 2026 7:04 PM CT | 6 E Evansville | WI | Tree down by Gibbs Lake reported by Rock County Dispatchers. Time estimated by radar. | |
April 2, 2026 7:19 PM CT | 1 SSW Whitewater | WI | Walworth County Dispatch reports trees and powerlines down on northwest side of county as well as near Whitewater. Time estimated by radar. | |
April 2, 2026 7:31 PM CT | 2 NW Elkhorn | WI | Walworth County Dispatch reports trees down in Sugar Creek Township. Time estimated by radar. | |
April 2, 2026 7:34 PM CT | 2 SSW Wonder Lake | IL | Reports of a large tree down across IL 120 and blocking the road between Wonder Lake Drive and Thompson Road. Time estimated based on radar. | |
April 2, 2026 7:44 PM CT | Butler | WI | Waukesha County Dispatch reports a tree on a phone in line Butler. Time estimated by radar. | |
April 2, 2026 7:47 PM CT | 1 ENE New Berlin | WI | Waukesha County Dispatch reports tree on a power line in New Berlin. Time estimated by radar. | |
April 2, 2026 6:30 PM CT | 60 mph | Oregon | IL | Small 2-inch limbs coming down. |
| Date & Time | Rating | City | State | Description |
|---|---|---|---|---|
April 2, 2026 6:24 PM CT | UNK | 3 N Grand Detour | IL | An NWS damage survey confirmed that a brief EF-1 tornado with estimated peak winds of 105 mph impacted a few properties along Ridge Road in southern Ogle County. One house had two-thirds of its roof removed by the tornado... and several trees were damaged by the tornado as well. |
April 2, 2026 6:44 PM CT | UNK | 3 SSW Davis Junction | IL | An NWS damage survey confirmed that an EF-0 tornado with estimated peak winds of 85 mph and a path length of 2.71 miles tracked through the community of Holcomb in northeastern Ogle County. The tornado caused extensive tree damage in Holcomb... damaged a few farm outbuildings... and caused a grain leg to collapse onto railroad tracks. |
This table includes only public storm reports connected to the April 2, 2026 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 2, 2026 event. These related maps cover storm dates from Sep 20, 2025 through Mar 31, 2026, with mapped hail estimates ranging from 1.00" to 1.50". In this set, the strongest related map reached 1.50", and the most recent map shown is from Mar 31, 2026.
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 2, 2026 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 2, 2026 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 2, 2026 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 2, 2026 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 2, 2026 Janesville, WI hail event.