Hail size 1"
Le Grand Marshall County
“(DMX)”
— NOAA / SPC storm report
/ Storm field report · Marshall
Hail in Marshalltown · Apr 15, 2026
The estimated-size surface reached 1.25" aloft; NEXRAD logged no point detections over Marshalltown that day. Open it on the live map to see the swath over the streets.
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Peak hail signal 1.25" ≈ half-dollar · radar-estimated size aloft
Homes in the hail footprint 2,440
Ground reports 1 1 hail
Radar surfaces 1 Estimated size only
Convective day · Apr 15, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Marshalltown has seen in the last 12 months
Composite score · 3.8 / 10
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
3.8 /10
- Peak hail signal
- 31 /100
- Homes exposed
- 68 /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 Marshalltown saw the hail — from two instruments
Apr 15, 2026 · Marshalltown, IA
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
Radar-estimated hail size Surface resolved
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
Max size
1.25"
Only the radar-estimated size surface resolved for Apr 15, 2026 — this storm produced no NEXRAD point detections over Marshalltown, so there is one map to show, not two.
The storm in context
Where Apr 15, 2026 sits in Marshalltown's hail record.
This was Marshalltown's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 3rd of the 8 storms we have logged here. Radar put the day's largest stone over Marshalltown at 1.25" — radar-estimated size aloft.
The Apr 15, 2026 convective day was bigger than Marshalltown: the same system put hail over 425 other tracked cities, 127 of them in Iowa. Nearest: Liscomb (7 miles north, up to 0.75"); Conrad (14 miles north, up to 0.75"); Garwin (15 miles east, up to 0.75").
These maps are stills. In the app this date is one of 8 Marshalltown 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 Le Grand — beyond Marshalltown itself.
Damage-capable hail signal
What 1.25" hail means for Marshalltown 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.
2,440 homes × $12,000 avg. claim
Potential roof exposure
$29M
Potential roof exposure — 2,440 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 12 jobs
- Illustrative work
- ~$180K
Close just 0.5% of the 2,440 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
April 2028
Claims from this storm can typically be filed until around April 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 $512 on top of the $150 plan.
Marshalltown hail history
Other storms in Marshalltown.
8 recorded storm days in Marshalltown, IA
Estimated-size surface Storm date Marshalltown / IA
Aug 11, 2026
1.25" Estimated 1.25"
No ground reports filed Open report →
Estimated-size surface Storm date Marshalltown / IA
Jul 20, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Marshalltown / IA
Jul 2, 2026
2" Signatures 2" Estimated 1"
No ground reports filed Open report →
Estimated-size surface Storm date Marshalltown / IA
Jun 28, 2026
1" Signatures 1" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Marshalltown / IA
Jun 11, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Marshalltown / IA
May 18, 2026
0.5" Estimated 0.5"
No ground reports filed Open report →
Estimated-size surface Storm date Marshalltown / IA
Apr 17, 2026
2" Signatures 2" Estimated 1"
No ground reports filed Open report →
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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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.