Hail size 1.75"
2 NE Mokena Will County
“Relayed via mping. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
/ Storm field report · Cook
Hail in Tinley Park · Jul 27, 2026
The estimated-size surface reached 3" aloft; NEXRAD logged no point detections over Tinley Park that day. At 3" — baseball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
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Peak hail signal 3" ≈ baseball · radar-estimated size aloft
Homes in the hail footprint 57,394
Ground reports 7 5 hail · 2 wind
Radar surfaces 1 Estimated size only
Convective day · Jul 27, 2026 · noon–noon UTC
Severity
The most severe storm Tinley Park has seen in the last 12 months
Composite score · 8.4 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
8.4 /10
- Peak hail signal
- 75 /100
- Homes exposed
- 95 /100
- Ground truth
- 100 /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 Tinley Park saw the hail — from two instruments
Jul 27, 2026 · Tinley Park, IL
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
Radar-estimated hail size Surface resolved
Estimated size field Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Max size
3"
Only the radar-estimated size surface resolved for Jul 27, 2026 — this storm produced no NEXRAD point detections over Tinley Park, so there is one map to show, not two.
The storm in context
Where Jul 27, 2026 sits in Tinley Park's hail record.
This was Tinley Park's 7th recorded hail day, arriving 7 days after the Jul 20, 2026 storm. By severity it ranks 1st of the 8 storms we have logged here. Radar put the day's largest stone over Tinley Park at 3" — radar-estimated size aloft.
The Jul 27, 2026 convective day was bigger than Tinley Park: the same system put hail over 803 other tracked cities, 130 of them in Illinois. Nearest: Orland Park (5 miles west, up to 4"); Hazel Crest (5 miles east, up to 2"); Markham (5 miles east, up to 2").
These maps are stills. In the app this date is one of 8 Tinley Park 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
7 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.
Hail reports
5 reports Hail size 1.75"
1 NE Tinley Park Cook County
“(LOT)”
— NOAA / SPC storm report
Hail size 1"
1 W Oak Forest Cook County
“Relayed via mping. (LOT)”
— NOAA / SPC storm report
Hail size 1"
Oak Forest Cook County
“Also estimated 60 mph winds. (LOT)”
— NOAA / SPC storm report
Hail size 1"
1 W Midlothian Cook County
“Relayed via mping. Time estimated by radar. (LOT)”
— NOAA / SPC storm report
Wind reports
2 reports Wind gust 66 mph
1 S Palos Park Cook County
“Private weather station KILPALOS2 reported 66 mph gust. (LOT)”
— NOAA / SPC storm report
Wind gust 68 mph
1 NNW Oak Forest Cook County
“Private weather station KILOAKFO13 reported 68 mph gust. Last observation prior to power outage. (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.
The storm tracked northeast at roughly 5 mph, based on the timing of ground reports.
Hail was reported over 31 minutes, from to .
Reports came from Mokena, Oak Forest, Midlothian, and Palos Park — beyond Tinley Park itself.
Severe hail signal
What 3" hail means for Tinley Park roofs.
Two-inch-plus hail is capable of puncturing shingles, breaking skylights or windows, and heavily denting soft materials. The strongest radar bands warrant prompt inspection, but neither the signal nor the footprint confirms damage at a specific address.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
57,394 homes × $12,000 avg. claim
Potential roof exposure
$689M
Potential roof exposure — 57,394 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 287 jobs
- Illustrative work
- ~$4.3M
Close just 0.5% of the 57,394 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
July 2028
Claims from this storm can typically be filed until around July 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 $12,053 on top of the $150 plan.
Tinley Park hail history
Other storms in Tinley Park.
8 recorded storm days in Tinley Park, IL
Estimated-size surface Storm date Tinley Park / IL
Aug 9, 2026
1" Estimated 1"
No ground reports filed Open report →
NEXRAD surface Storm date Tinley Park / IL
Jul 20, 2026
No ground reports filed Open report →
Estimated-size surface Storm date Tinley Park / IL
Jul 3, 2026
1.5" Signatures 1.5" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Tinley Park / IL
May 4, 2026
0.75" Signatures 0.75"
No ground reports filed Open report →
NEXRAD surface Storm date Tinley Park / IL
Apr 21, 2026
1" Signatures 1"
No ground reports filed Open report →
NEXRAD surface Storm date Tinley Park / IL
Apr 2, 2026
No ground reports filed Open report →
Estimated-size surface Storm date Tinley Park / IL
Mar 26, 2026
1.5" Signatures 1.5" Estimated 0.5"
2 ground reports Open report →
The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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For iPhone. Android coming soon.
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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 10, 2026.