Hail in Ackley · Sep 4, 2026
The estimated-size surface reached 1" aloft; NEXRAD logged no point detections over Ackley that day. Open it on the live map to see the swath over the streets.
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Convective day · Sep 4, 2026 · noon–noon UTC
Severity
The 4th most severe storm Ackley 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
- 61 /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 Ackley 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.
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.
Only the radar-estimated size surface resolved for Sep 4, 2026 — this storm produced no NEXRAD point detections over Ackley, so there is one map to show, not two.
The storm in context
Where Sep 4, 2026 sits in Ackley's hail record.
This was Ackley's 14th recorded hail day, arriving 25 days after the Aug 10, 2026 storm. By severity it ranks 4th of the 14 storms we have logged here. Radar put the day's largest stone over Ackley at 1" — radar-estimated size aloft.
The Sep 4, 2026 convective day was bigger than Ackley: the same system put hail over 482 other tracked cities, 31 of them in Iowa. Nearest: Aplington (10 miles east, up to 1.25"); Iowa Falls (10 miles west, up to 0.75"); Parkersburg (15 miles east, up to 1.25").
These maps are stills. In the app this date is one of 14 Ackley 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.
For this storm over Ackley, the NWS report log is empty — a common outcome, since ground reports only happen when someone witnesses the hail and takes the time to call it in. The detection record for the date lives in the radar maps above.
Damage-capable hail signal
What 1" hail means for Ackley 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
$14M
Potential roof exposure — 1,142 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 6 jobs
- Illustrative work
- ~$90K
Close just 0.5% of the 1,142 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
September 2028
Claims from this storm can typically be filed until around September 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 $240 on top of the $150 plan.
Ackley hail history
Other storms in Ackley.
Estimated-size surface Aug 10, 2026
1"
Estimated-size surface Aug 7, 2026
0.75"
Estimated-size surface Aug 6, 2026
0.5"
Estimated-size surface Jul 26, 2026
1"
Estimated-size surface Jul 20, 2026
0.5"
Estimated-size surface Jul 13, 2026
0.5"
Estimated-size surface Jul 8, 2026
1.75"
Estimated-size surface Jul 4, 2026
1"
Estimated-size surface Jul 2, 2026
1.5"
Estimated-size surface Jun 10, 2026
0.75"
Estimated-size surface May 15, 2026
1"
Estimated-size surface Apr 17, 2026
1.5"
Estimated-size surface Apr 15, 2026
0.5"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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