Hail in Downers Grove · Aug 9, 2026
The estimated-size surface reached 0.5" aloft; NEXRAD logged no point detections over Downers Grove that day. 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 · Aug 9, 2026 · noon–noon UTC
Severity
The 5th most severe storm Downers Grove 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
- 13 /100
- Homes exposed
- 82 /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 Downers Grove 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.
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.
Only the radar-estimated size surface resolved for Aug 9, 2026 — this storm produced no NEXRAD point detections over Downers Grove, so there is one map to show, not two.
The storm in context
Where Aug 9, 2026 sits in Downers Grove's hail record.
This was Downers Grove's 7th recorded hail day, arriving 13 days after the Jul 27, 2026 storm. By severity it ranks 5th of the 7 storms we have logged here. Radar put the day's largest stone over Downers Grove at 0.5" — radar-estimated size aloft.
The Aug 9, 2026 convective day was bigger than Downers Grove: the same system put hail over 453 other tracked cities, 69 of them in Illinois. Nearest: Carol Stream (9 miles northwest, up to 1"); Bolingbrook (9 miles southwest, up to 0.75"); Melrose Park (9 miles northeast, up to 0.5").
These maps are stills. In the app this date is one of 7 Downers Grove 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.
The National Weather Service logged no spotter reports for this storm over Downers Grove. 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.
Below the severe threshold
What 0.5" hail means for Downers Grove roofs.
Radar signals under three-quarters of an inch stay below the National Weather Service severe threshold and generally indicate lower roof risk. Older or already-worn materials can still show effects, but radar alone cannot determine whether a specific roof was damaged.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$155M
Potential roof exposure — 12,954 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 65 jobs
- Illustrative work
- ~$975K
Close just 0.5% of the 12,954 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
August 2028
Claims from this storm can typically be filed until around August 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 $2,720 on top of the $150 plan.
Downers Grove hail history
Other storms in Downers Grove.
Estimated-size surface Jul 27, 2026
2.75"
Estimated-size surface Jun 13, 2026
0.5"
Estimated-size surface Jun 11, 2026
0.5"
Estimated-size surface Jun 10, 2026
0.75"
Estimated-size surface Mar 30, 2026
1.75"
NEXRAD surface Mar 26, 2026
1.25"Take your next area into the field.
See the hail, review your recommendations, and canvass with Overview on iPhone.
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.