Hail in Greenville · May 18, 2026
NEXRAD logged 9 hail signatures up to 1.75"; the estimated-size surface had no signal that day. Open it on the live map to see the swath over the streets.
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Convective day · May 18, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Greenville 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
- 44 /100
- Homes exposed
- 48 /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 Greenville 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.
Only the NEXRAD radar-signature surface resolved for May 18, 2026 — the estimated-size swath had no hail signal to model for this storm, so there is one map to show, not two.
The storm in context
Where May 18, 2026 sits in Greenville's hail record.
This was Greenville's 4th recorded hail day, arriving 1 day after the May 17, 2026 storm. By severity it ranks 3rd of the 8 storms we have logged here. Radar put the day's largest stone over Greenville at 1.75" — the largest NEXRAD radar signature.
The May 18, 2026 convective day was bigger than Greenville: the same system put hail over 726 other tracked cities, 102 of them in Iowa. Nearest: Linn Grove (10 miles west, up to 1.25"); Peterson (17 miles southwest, up to 1.5"); Laurens (21 miles southeast, up to 1").
These maps are stills. In the app this date is one of 8 Greenville 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.
No ground reports were filed with the National Weather Service for this storm over Greenville. That is common: a report depends on someone being there to see it and take the time to call it in. The radar surfaces above are the record here — the storm was detected from above even though no one on the ground logged it.
High damage potential
What 1.75" hail means for Greenville roofs.
Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$2.9M
Potential roof exposure — 240 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 1 job
- Illustrative work
- ~$15K
Close just 0.5% of the 240 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
May 2028
Claims from this storm can typically be filed until around May 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 $50 on top of the $150 plan.
Greenville hail history
Other storms in Greenville.
Estimated-size surface Sep 1, 2026
0.5"
Estimated-size surface Jul 4, 2026
0.75"
Estimated-size surface Jul 1, 2026
1"
Estimated-size surface Jun 28, 2026
2.5"
Estimated-size surface May 17, 2026
1.75"
Estimated-size surface Apr 23, 2026
1.5"
Estimated-size surface Apr 13, 2026
1.5"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.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.