Hail in Grand Mound Jul 3, 2026
Hit 31 days agoBoth radar surfaces caught this storm: NEXRAD logged 17 hail signatures up to 1.75", and the radar-estimated size reached 0.75" aloft.
1.75"
≈ golf ball · the largest NEXRAD radar signature353
0
none filedThe 2nd most severe storm Grand Mound has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Hail size
- 44 /100
- Homes exposed
- 51 /100
- Ground truth
- 0 /100
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
How Grand Mound 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.
NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
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.
Where Jul 3, 2026 sits in Grand Mound's hail record
This was Grand Mound's 3rd recorded hail day, arriving 23 days after the Jun 10, 2026 storm. By severity it ranks 2nd of the 3 storms we have logged here. Radar put the day's largest stone over Grand Mound at 1.75" — the largest NEXRAD radar signature.
The Jul 3, 2026 convective day was bigger than Grand Mound: the same system put hail over 1,885 other tracked cities, 182 of them in Iowa. Nearest: Lost Nation (6 miles northwest, up to 1.75"); Calamus (6 miles southwest, up to 1"); De Witt (8 miles east, up to 1.75").
These maps are stills from Grand Mound's Jul 3, 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.
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.
The National Weather Service logged no spotter reports for this storm over Grand Mound. That absence is ordinary — filing a report takes a person on the spot who saw the hail and phoned it in. What stands as the record for this date is the radar above, which caught the storm regardless.
What 1.75" hail means for Grand Mound roofs
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.
$4.2M
Potential roof exposure — 353 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Grand Mound on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Grand Mound storm history — this Jul 3, 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
3 recorded storm days in Grand Mound, IA
