Hail in Iowa City · Aug 11, 2026
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Iowa City that day. Open it on the live map to see the swath over the streets.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.
Convective day · Aug 11, 2026 · noon–noon UTC
Severity
The 6th most severe storm Iowa City 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
- 19 /100
- Homes exposed
- 88 /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 Iowa City saw the hail — from two instruments
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.
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.
Only the radar-estimated size surface resolved for Aug 11, 2026 — this storm produced no NEXRAD point detections over Iowa City, so there is one map to show, not two.
The storm in context
Where Aug 11, 2026 sits in Iowa City's hail record.
This was Iowa City's 12th recorded hail day, arriving 4 days after the Aug 7, 2026 storm. By severity it ranks 6th of the 12 storms we have logged here. Radar put the day's largest stone over Iowa City at 0.75" — radar-estimated size aloft.
The Aug 11, 2026 convective day was bigger than Iowa City: the same system put hail over 1,041 other tracked cities, 89 of them in Iowa. Nearest: Coralville (8 miles northwest, up to 1"); West Branch (8 miles northeast, up to 0.75"); West Liberty (12 miles southeast, up to 1").
These maps are stills. In the app this date is one of 12 Iowa City 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 Iowa City, 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.
Near the severe threshold
What 0.75" hail means for Iowa City roofs.
A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$301M
Potential roof exposure — 25,116 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 126 jobs
- Illustrative work
- ~$1.9M
Close just 0.5% of the 25,116 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
August 2028
Claims from this storm can typically be filed until around August 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 $5,274 on top of the $150 plan.
Iowa City hail history
Other storms in Iowa City.
Estimated-size surface Aug 7, 2026
1"
Estimated-size surface Jul 8, 2026
0.5"
Estimated-size surface Jul 3, 2026
1.75"
Estimated-size surface Jun 17, 2026
0.5"
Estimated-size surface Jun 10, 2026
0.75"
Estimated-size surface Apr 14, 2026
0.5"
Estimated-size surface Apr 2, 2026
3"
Estimated-size surface Mar 31, 2026
1.5"
Estimated-size surface Mar 30, 2026
1"
NEXRAD surface Mar 15, 2026
0.75"
Estimated-size surface Mar 10, 2026
1.75"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.