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 Mokena · Aug 11, 2026
Hit 34 days ago
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Mokena 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 23,026
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 Mokena 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 Mokena saw the hail — from two instruments
Aug 11, 2026 · Mokena, IL
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
Max size
0.75"
Only the radar-estimated size surface resolved for Aug 11, 2026 — this storm produced no NEXRAD point detections over Mokena, so there is one map to show, not two.
The storm in context
Where Aug 11, 2026 sits in Mokena's hail record.
This was Mokena's 5th recorded hail day, arriving 15 days after the Jul 27, 2026 storm. By severity it ranks 4th of the 5 storms we have logged here. Radar put the day's largest stone over Mokena at 0.75" — radar-estimated size aloft.
The Aug 11, 2026 convective day was bigger than Mokena: the same system put hail over 1,041 other tracked cities, 124 of them in Illinois. Nearest: Frankfort (5 miles east, up to 0.75"); New Lenox (5 miles west, up to 0.75"); Homer Glen (9 miles northwest, up to 0.75").
These maps are stills. In the app this date is one of 5 Mokena 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 Frankfort — beyond Mokena itself.
Near the severe threshold
What 0.75" hail means for Mokena 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.
23,026 homes × $12,000 avg. claim
Potential roof exposure
$276M
Potential roof exposure — 23,026 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 115 jobs
- Illustrative work
- ~$1.7M
Close just 0.5% of the 23,026 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 $4,835 on top of the $150 plan.
Mokena hail history
Other storms in Mokena.
5 recorded storm days in Mokena, IL
Estimated-size surface Storm date Mokena / IL
Jul 27, 2026
2.75" Estimated 2.75"
2 ground reports Open report →
Estimated-size surface Storm date Mokena / IL
Jul 17, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Mokena / IL
Jul 3, 2026
1.5" Signatures 1.5" Estimated 0.75"
1 ground report Open report →
Estimated-size surface Storm date Mokena / IL
Mar 31, 2026
1.75" Signatures 1.75" Estimated 0.75"
3 ground reports Open report →
Take your next area into the field.
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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.