Hail in Downers Grove Mar 26, 2026
NEXRAD caught this storm: 5 hail signatures up to 1.25". The radar-estimated size surface had no signal to model this day.
1.25"
≈ half-dollar · the largest NEXRAD radar signature8,975
0
none filedThe 3rd 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.
- Hail size
- 31 /100
- Homes exposed
- 79 /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 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.
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.
Only the NEXRAD radar-signature surface resolved for Mar 26, 2026 — the estimated-size swath had no hail signal to model for this storm, so there is one map to show, not two.
Where Mar 26, 2026 sits in Downers Grove's hail record
This was Downers Grove's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 3rd of the 6 storms we have logged here. Radar put the day's largest stone over Downers Grove at 1.25" — the largest NEXRAD radar signature.
The Mar 26, 2026 convective day was bigger than Downers Grove: the same system put hail over 316 other tracked cities, 103 of them in Illinois. Nearest: Lisle (5 miles west, up to 1.25"); Western Springs (5 miles east, up to 1"); Lemont (7 miles south, up to 1.75").
These maps are stills from Downers Grove's Mar 26, 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 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.
What 1.25" hail means for Downers Grove roofs
Quarter-size and larger hail is where asphalt shingle damage starts in earnest: bruised mats and granule loss that homeowners can't see from the ground. Most people inside the footprint won't know their roof was hit until someone inspects it.
$108M
Potential roof exposure — 8,975 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Downers Grove on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Downers Grove storm history — this Mar 26, 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
6 recorded storm days in Downers Grove, IL
Other storms in Downers Grove
Jul 27, 2026
2.75"
Jun 13, 2026
0.5"
Jun 11, 2026
0.5"
Jun 10, 2026
0.75"
Mar 30, 2026
1.75"