Hail in Saint Charles · Jul 20, 2026
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 1" aloft. 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 · Jul 20, 2026 · noon–noon UTC
Severity
The 2nd most severe storm Saint Charles 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
- 25 /100
- Homes exposed
- 67 /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 Saint Charles saw the hail — from two instruments
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 signature field NEXRAD radar signatures — the point detections the storm produced overhead. A signature is where the radar saw hail, not a confirmed stone on the ground.
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.
The storm in context
Where Jul 20, 2026 sits in Saint Charles's hail record.
This was Saint Charles's 4th recorded hail day, arriving 39 days after the Jun 11, 2026 storm. By severity it ranks 2nd of the 6 storms we have logged here. Radar put the day's largest stone over Saint Charles at 1" — radar-estimated size aloft.
The Jul 20, 2026 convective day was bigger than Saint Charles: the same system put hail over 553 other tracked cities, 178 of them in Iowa. Nearest: Peru (9 miles southwest, up to 0.75"); Cumming (14 miles north, up to 1.5"); Van Meter (15 miles north, up to 1.75").
These maps are stills. In the app this date is one of 6 Saint Charles 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.
Nobody on the ground filed a report over Saint Charles for this date, which says more about who was watching than about the storm: spotter reports only exist where there is an observer. The radar surfaces above carry the evidence for this one.
Damage-capable hail signal
What 1" hail means for Saint Charles 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.
Potential roof exposure
$28M
Potential roof exposure — 2,315 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 2,315 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
July 2028
Claims from this storm can typically be filed until around July 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 $486 on top of the $150 plan.
Saint Charles hail history
Other storms in Saint Charles.
Estimated-size surface Aug 13, 2026
0.75"
Estimated-size surface Jul 27, 2026
0.75"
Estimated-size surface Jun 11, 2026
1.5"
Estimated-size surface May 18, 2026
0.5"
Estimated-size surface May 15, 2026
1"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.
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.