Wind gust 91 mph
2 E Mokena Will County
“Near 195th and La Grange Road. (LOT)”
— NOAA / SPC storm report
/ Storm field report · Will
Hail in Frankfort · Aug 11, 2026
Hit 32 days ago
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Frankfort that day. Open it on the live map to see the swath over the streets.
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Peak hail signal 0.75" ≈ penny to nickel · radar-estimated size aloft
Homes in the hail footprint 22,609
Ground reports 2 2 wind
Radar surfaces 1 Estimated size only
Convective day · Aug 11, 2026 · noon–noon UTC
Severity
The 4th most severe storm Frankfort has seen in the last 12 months
Composite score · 3.8 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
3.8 /10
- Peak hail signal
- 19 /100
- Homes exposed
- 87 /100
- Ground truth
- 33 /100
Largest radar-indicated size — a signal of damage potential, not confirmation.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
Evidence / storm surfaces
How Frankfort saw the hail — from two instruments
Aug 11, 2026 · Frankfort, IL
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated maximum hail size across the swath, modeled from radar aloft. It reflects the biggest stone the storm could support, which may differ from what actually fell.
Max size
0.75"
Only the radar-estimated size surface resolved for Aug 11, 2026 — this storm produced no NEXRAD point detections over Frankfort, so there is one map to show, not two.
The storm in context
Where Aug 11, 2026 sits in Frankfort's hail record.
This was Frankfort's 7th recorded hail day, arriving 1 day after the Aug 10, 2026 storm. By severity it ranks 4th of the 7 storms we have logged here. Radar put the day's largest stone over Frankfort at 0.75" — radar-estimated size aloft.
The Aug 11, 2026 convective day was bigger than Frankfort: the same system put hail over 1,041 other tracked cities, 124 of them in Illinois. Nearest: Mokena (5 miles west, up to 0.75"); Matteson (5 miles east, up to 0.75"); Markham (9 miles northeast, up to 0.75").
These maps are stills. In the app this date is one of 7 Frankfort storm dates on a live map — both surfaces, the reports, and a replay — and the same map is where you draw the swath. This page rebuilds nightly.
Ground reports
What people on the ground reported
2 reports filed with the NWS
These are storm reports filed with the National Weather Service and released through the NOAA Storm Prediction Center — public-domain observations from spotters, the public, and NWS surveys. We quote each one exactly as filed.
Wind reports
2 reports Wind gust 75 mph
Frankfort Will County
“Sustained winds estimated 55 mph with gusts in excess of 75 mph. (LOT)”
— NOAA / SPC storm report
Storm forensics
How the storm moved
Timing and place names from NOAA ground reports
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Hail was reported over 19 minutes, from to .
Reports came from Mokena — beyond Frankfort itself.
Near the severe threshold
What 0.75" hail means for Frankfort roofs.
A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
22,609 homes × $12,000 avg. claim
Potential roof exposure
$271M
Potential roof exposure — 22,609 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 113 jobs
- Illustrative work
- ~$1.7M
Close just 0.5% of the 22,609 homes in this footprint at the average $15,000 roof job. Illustrative math, not a projection — your results depend on your outreach and how the market responds.
Claim window
August 2028
Claims from this storm can typically be filed until around August 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Names and phones for every home in the footprint: at most $4,748 on top of the $150 plan.
Frankfort hail history
Other storms in Frankfort.
7 recorded storm days in Frankfort, IL
Estimated-size surface Storm date Frankfort / IL
Aug 10, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Frankfort / IL
Aug 9, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Frankfort / IL
Jul 27, 2026
2.25" Estimated 2.25"
1 ground report Open report →
Estimated-size surface Storm date Frankfort / IL
Jul 4, 2026
1.25" Signatures 1.25" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Frankfort / IL
Jul 3, 2026
1.5" Signatures 1.5" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Frankfort / IL
Mar 31, 2026
1.75" Signatures 1.75" Estimated 0.75"
No ground reports filed Open report →
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A storm day here is a convective day — it runs from noon to noon
UTC, so late-night hail is grouped with the afternoon storm that
spawned it rather than split across two calendar dates. Ground
reports are public-domain observations from the NOAA Storm
Prediction Center. Radar tells you where to look. Only an inspection confirms damage at an address. Last updated Aug 12, 2026.