Hail in Marengo · Jul 4, 2026
NEXRAD logged 1 hail signature up to 1"; the estimated-size surface reached 0.75" aloft. Open it on the live map to see the swath over the streets.
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Convective day · Jul 4, 2026 · noon–noon UTC
Severity
The 4th most severe storm Marengo has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 25 /100
- Homes exposed
- 31 /100
- Ground truth
- 0 /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 Marengo saw the hail — from two instruments
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 signature field NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
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.
The storm in context
Where Jul 4, 2026 sits in Marengo's hail record.
This was Marengo's 7th recorded hail day, arriving 2 days after the Jul 2, 2026 storm. By severity it ranks 4th of the 10 storms we have logged here. Radar put the day's largest stone over Marengo at 1" — the largest NEXRAD radar signature.
The Jul 4, 2026 convective day was bigger than Marengo: the same system put hail over 2,035 other tracked cities, 146 of them in Illinois. Nearest: Garden Prairie (7 miles south, up to 1"); Hampshire (17 miles southeast, up to 2.5"); Maple Park (21 miles south, up to 1").
These maps are stills. In the app this date is one of 10 Marengo 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
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.
Nobody on the ground filed a report over Marengo for this date, which says more about who was watching than about the storm: spotter reports only exist where there is an observer. The radar surfaces above carry the evidence for this one.
Damage-capable hail signal
What 1" hail means for Marengo roofs.
Quarter-size and larger hail can bruise asphalt mats, remove granules, and dent exposed soft metal. The mapped footprint identifies an inspection priority area — it does not identify which individual roofs, if any, sustained damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$432K
Potential roof exposure — 36 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
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 $8 on top of the $150 plan.
Marengo hail history
Other storms in Marengo.
Estimated-size surface Aug 9, 2026
0.5"
Estimated-size surface Jul 27, 2026
1"
Estimated-size surface Jul 17, 2026
0.5"
Estimated-size surface Jul 2, 2026
0.5"
Estimated-size surface Jun 11, 2026
0.5"
NEXRAD surface Jun 5, 2026
Estimated-size surface Apr 14, 2026
0.75"
NEXRAD surface Apr 2, 2026
Estimated-size surface Mar 30, 2026
1"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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