Hail size 1"
Iowa City Johnson County
“10 minutes of quarter size hail. Hail is covering the ground. (DVN)”
— NOAA / SPC storm report
/ Storm field report · Johnson
Hail in Iowa City · Mar 10, 2026
The estimated-size surface reached 1.75" aloft; NEXRAD logged no point detections over Iowa City that day. Open it on the live map to see the swath over the streets.
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Peak hail signal 1.75" ≈ golf ball · radar-estimated size aloft
Homes in the hail footprint 16,177
Ground reports 10 10 hail
Radar surfaces 1 Estimated size only
Convective day · Mar 10, 2026 · noon–noon UTC
Severity
The 2nd most severe storm Iowa City has seen in the last 12 months
Composite score · 6.2 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
6.2 /10
- Peak hail signal
- 44 /100
- Homes exposed
- 84 /100
- Ground truth
- 100 /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
Mar 10, 2026 · Iowa City, IA
We map this storm two ways: the NEXRAD radar signatures the storm produced overhead, and the radar-estimated size of the hail in the air. The two surfaces don’t have to match — where they diverge is where estimated size aloft ran ahead of, or behind, what the signatures caught.
Radar-estimated hail size Surface resolved
Estimated size field Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Max size
1.75"
Only the radar-estimated size surface resolved for Mar 10, 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 Mar 10, 2026 sits in Iowa City's hail record.
This was Iowa City's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 2nd of the 12 storms we have logged here. Radar put the day's largest stone over Iowa City at 1.75" — radar-estimated size aloft.
The Mar 10, 2026 convective day was bigger than Iowa City: the same system put hail over 470 other tracked cities, 47 of them in Iowa. Nearest: West Branch (8 miles northeast, up to 1.5"); Solon (10 miles north, up to 0.5"); West Liberty (12 miles southeast, up to 1.5").
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
10 reports 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
10 reports Hail size 1.25"
2 SE Iowa City Johnson County
“Occurring right now. (DVN)”
— NOAA / SPC storm report
Hail size 1.5"
2 SE Iowa City Johnson County
“Size increased since last report. (DVN)”
— NOAA / SPC storm report
Hail size 1"
1 E Iowa City Municipal Johnson County
“Delayed report. Marble to quarter sized hail. (DVN)”
— NOAA / SPC storm report
Hail size 1"
1 ESE Iowa City Johnson County
“Delayed report. (DVN)”
— NOAA / SPC storm report
Hail size 1"
1 E Iowa City Johnson County
“Report from mPING: Quarter (1.00 in.). (DVN)”
— NOAA / SPC storm report
Hail size 1.25"
2 SE Iowa City Johnson County
“Report from mPING: Half Dollar (1.25 in.). (DVN)”
— NOAA / SPC storm report
Hail size 1"
2 SE Iowa City Johnson County
“(DVN)”
— NOAA / SPC storm report
Hail size 2.75"
3 SW West Branch Johnson County
“(DVN)”
— NOAA / SPC storm report
Hail size 2.5"
3 W Iowa City Municipal Johnson County
“(DVN)”
— NOAA / SPC storm report
Storm 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.
Hail was reported over 19 minutes, from to .
Reports came from Iowa City Municipal and West Branch — beyond Iowa City itself.
High damage potential
What 1.75" hail means for Iowa City 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.
16,177 homes × $12,000 avg. claim
Potential roof exposure
$194M
Potential roof exposure — 16,177 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 81 jobs
- Illustrative work
- ~$1.2M
Close just 0.5% of the 16,177 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
March 2028
Claims from this storm can typically be filed until around March 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 $3,397 on top of the $150 plan.
Iowa City hail history
Other storms in Iowa City.
12 recorded storm days in Iowa City, IA
Estimated-size surface Storm date Iowa City / IA
Aug 11, 2026
0.75" Estimated 0.75"
No ground reports filed Open report →
Estimated-size surface Storm date Iowa City / IA
Aug 7, 2026
1" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Iowa City / IA
Jul 8, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Iowa City / IA
Jul 3, 2026
1.75" Signatures 1.75" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Iowa City / IA
Jun 17, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Iowa City / IA
Jun 10, 2026
0.75" Estimated 0.75"
1 ground report Open report →
Estimated-size surface Storm date Iowa City / IA
Apr 14, 2026
0.5" Estimated 0.5"
5 ground reports Open report →
Estimated-size surface Storm date Iowa City / IA
Apr 2, 2026
3" Signatures 3" Estimated 1.25"
2 ground reports Open report →
Estimated-size surface Storm date Iowa City / IA
Mar 31, 2026
1.5" Signatures 1.5"
No ground reports filed Open report →
Estimated-size surface Storm date Iowa City / IA
Mar 30, 2026
1" Signatures 1" Estimated 0.75"
No ground reports filed Open report →
NEXRAD surface Storm date Iowa City / IA
Mar 15, 2026
0.75" Signatures 0.75"
No ground reports filed Open report →
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Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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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 Aug 12, 2026.