The radar-estimated size surface caught this storm, reaching 1.5" aloft. NEXRAD logged no point detections over Masonville this day.
A tornado was also reported to the National Weather Service during this storm — see the ground reports below.
1.5"
≈ ping-pong ball · radar-estimated size aloft1,453
1
1 tornadoOverview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
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.
Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Only the radar-estimated size surface resolved for Apr 14, 2026 — this storm produced no NEXRAD point detections over Masonville, so there is one map to show, not two.
This was Masonville's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 7 storms we have logged here. Radar put the day's largest stone over Masonville at 1.5" — radar-estimated size aloft.
The Apr 14, 2026 convective day was bigger than Masonville: the same system put hail over 476 other tracked cities, 143 of them in Iowa. Nearest: Winthrop (5 miles west, up to 1.5"); Coggon (7 miles south, up to 1"); Manchester (8 miles northeast, up to 1.25").
These maps are stills from Masonville's Apr 14, 2026 storm. In the Overview app the same surfaces are live — radar updating in real time, radar-estimated hail size as it forms, and NWS spotter reports pinned where they're filed — with a radar replay you can scrub back over any past day.
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.
“An EF1 tornado began east-southeast of Winthrop and tracked into Delaware County to just east-southeast of Masonville. A barn was completely destroyed at the beginning (DVN)”
— NOAA / SPC storm report
At an inch and a half, hail cracks shingles, strips granules down to the mat, and dents gutters, vents, and siding. A footprint like this typically produces a wave of insurance claims — and the contractor who reaches the homeowner first usually gets the inspection.
$17M
Potential roof exposure — 1,453 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Radar updates in real time, spotter reports appear on the map as they're filed, and the full Masonville storm history — this Apr 14, 2026 storm included — sits underneath. When you're ready, draw this storm's footprint and pull highly accurate homeowner contact information for every address inside it.
Highly accurate contact information starting at $0.23 per address — every contact included. Digital leads cost $15–$40. Start with a 7-day free trial — no credit card required. See pricing
7 recorded storm days in Masonville, IA
Jul 2, 2026
1.75"
Jun 28, 2026
1"
Jun 10, 2026
0.5"
Apr 23, 2026
1"
Apr 17, 2026
1.25"
Apr 15, 2026
1"