Verified storm · closed
1.2–5" hail crossed DuPage County, IL — July 27, 2026
Measured against the NOAA MRMS national radar feed on its 2-minute cycle — a verified event, not a forecast.
Storm stats
| County | DuPage County, IL |
|---|---|
| Max hail (MESH) | 5" |
| Mean hail (MESH) | 1.2" |
| Swath area | 867 mi² (2,245 km²) |
| Radar cells (~1 km grid) | 2,430 |
| First radar detection | 2026-07-27 15:52 UTC |
| Last radar detection | 2026-07-27 19:28 UTC |
| Verified | 2026-07-27 15:54 UTC |
| Swath centroid | 41.7368, -87.9321 |
| Storm ID | sw_4dd27eb7 |

Address lookup — $8
Was your address under this swath?
Enter any US address — we build the full radar-verified report, this storm included, with hail sizes measured at the address. $8 one-time; the industry charges $14.95–$30 for a 3-mile-radius answer.
US ADDRESSES · GEOCODED VIA US CENSUS · WHY $8 WHEN OTHERS CHARGE $30 →
Every roof under this swath, one API call.
Get the property list for this storm — every affected parcel with roof age, owner-occupancy, and measured hail exposure. Free API key, 2 free trial credits, no card.
curl "https://swathapi.com/v1/swaths/sw_4dd27eb7/properties?roof_age_min=10" \ -H "Authorization: Bearer sk_..."
ASK CLAUDE OR CHATGPT ABOUT THIS STORM — SWATH WORKS INSIDE YOUR AI. CONNECT THE MCP SERVER
Want this every morning?
The Daily Swath — every verified storm, mapped, in your inbox at 9am ET.
DuPage County, IL — verified storm record
Swath has 12 radar-verified hail storms on record for DuPage County, IL going back to July 2025, the largest measuring 5.00″. Every one was measured against NOAA MRMS radar — not estimated, and not a forecast.