Hail size 1.5"
4 S Farragut Fremont County
“Ping pong ball size hail reported south of Farragut. (OAX)”
— NOAA / SPC storm report
/ Storm field report · Fremont
Hail in Hamburg · May 18, 2026
NEXRAD logged 19 hail signatures up to 2.25"; the estimated-size surface reached 1.25" aloft. At 2.25" — tennis ball — 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 2.25" ≈ tennis ball · the largest NEXRAD radar signature
Homes in the hail footprint 328
Ground reports 1 1 hail
Radar surfaces 2 NEXRAD + estimated size
Convective day · May 18, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Hamburg has seen in the last 12 months
Composite score · 4.9 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
4.9 /10
- Peak hail signal
- 56 /100
- Homes exposed
- 50 /100
- Ground truth
- 17 /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 Hamburg saw the hail — from two instruments
May 18, 2026 · Hamburg, IA
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
NEXRAD radar signatures Surface resolved
Radar signature field Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
Max size
2.25"
Detections
19
Radar-estimated hail size Surface resolved
Estimated size field The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.
Max size
1.25"
The storm in context
Where May 18, 2026 sits in Hamburg's hail record.
This was Hamburg's 6th recorded hail day, arriving 1 day after the May 17, 2026 storm. By severity it ranks 3rd of the 12 storms we have logged here. Radar put the day's largest stone over Hamburg at 2.25" — the largest NEXRAD radar signature.
The May 18, 2026 convective day was bigger than Hamburg: the same system put hail over 726 other tracked cities, 102 of them in Iowa. Nearest: Rock Port (7 miles south, up to 2.5"); Watson (7 miles south, up to 2.5"); Shenandoah (8 miles east, up to 1.75").
These maps are stills. In the app this date is one of 12 Hamburg 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
1 report 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
1 reportStorm 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.
Reports came from Farragut — beyond Hamburg itself.
Severe hail signal
What 2.25" hail means for Hamburg 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.
328 homes × $12,000 avg. claim
Potential roof exposure
$3.9M
Potential roof exposure — 328 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 2 jobs
- Illustrative work
- ~$30K
Close just 0.5% of the 328 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 $69 on top of the $150 plan.
Hamburg hail history
Other storms in Hamburg.
12 recorded storm days in Hamburg, IA
Estimated-size surface Storm date Hamburg / IA
Sep 14, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Hamburg / IA
Sep 6, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Hamburg / IA
Jul 8, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Hamburg / IA
Jul 3, 2026
2.5" Signatures 2.5" Estimated 1.5"
1 ground report Open report →
Estimated-size surface Storm date Hamburg / IA
Jun 30, 2026
No ground reports filed Open report →
Estimated-size surface Storm date Hamburg / IA
Jun 10, 2026
1.5" Estimated 1.5"
No ground reports filed Open report →
Estimated-size surface Storm date Hamburg / IA
May 17, 2026
1.75" Signatures 1.75" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Hamburg / IA
May 16, 2026
1.75" Signatures 1.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Hamburg / IA
Apr 23, 2026
2" Signatures 2" Estimated 1"
3 ground reports Open report →
Estimated-size surface Storm date Hamburg / IA
Apr 3, 2026
1.25" Signatures 1.25" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Hamburg / IA
Mar 6, 2026
1" Signatures 1"
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 Sep 15, 2026.