Hail size 1"
2 N New Windsor Henry County
“Nickel to quarter sized hail occurring right now. Increasing in intensity. (DVN)”
— NOAA / SPC storm report
Hail in Alpha Mar 10, 2026
The radar-estimated size surface caught this storm, reaching 1.5" aloft. NEXRAD logged no point detections over Alpha this day.
Largest hailstone
1.5"
≈ ping-pong ball · radar-estimated size aloft Homes in the hail footprint
2,271
Ground reports
2
2 hailThe most severe storm Alpha has seen in the last 12 months
Storm severity score
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
4.4 /10
- Hail size
- 38 /100
- Homes exposed
- 67 /100
- Ground truth
- 33 /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 Alpha 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-estimated hail size
Maximum hail size as estimated from radar aloft. Treat it as the storm's ceiling — the largest supportable stone — rather than a ground measurement.
Max size
1.5"
Only the radar-estimated size surface resolved for Mar 10, 2026 — this storm produced no NEXRAD point detections over Alpha, so there is one map to show, not two.
Where Mar 10, 2026 sits in Alpha's hail record
This was Alpha's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 2 storms we have logged here. Radar put the day's largest stone over Alpha at 1.5" — radar-estimated size aloft.
The Mar 10, 2026 convective day was bigger than Alpha: the same system put hail over 470 other tracked cities, 100 of them in Illinois. Nearest: New Windsor (5 miles west, up to 1"); Rio (7 miles south, up to 1.5"); Oneida (9 miles southeast, up to 1.75").
These maps are stills from Alpha's Mar 10, 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.
Hail reports
2 reports Hail size 1"
2 N New Windsor Henry County
“nickel to quarters. (DVN)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports,
not a radar-measured storm track.
How the storm moved
Hail was reported over 129 minutes, from to .
Reports came from New Windsor — beyond Alpha itself.
What 1.5" hail means for Alpha 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.
What this storm is worth to a roofer
$27M
Potential roof exposure — 2,271 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Illustrative jobs
11 jobs
Illustrative work
~$165K
Claims from this storm can typically be filed until around March 2028 — the window to reach these homeowners while it's still open. Deadlines vary by policy and state.
Track hail over Alpha on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Alpha storm history — this Mar 10, 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
Alpha hail history
← All hail in Alpha 2 recorded storm days in Alpha, IL
Other storms in Alpha
A storm day here is a convective day — it runs from noon to noon
UTC, so late-night hail is grouped with the afternoon storm that
spawned it rather than split across two calendar dates. Ground
reports are public-domain observations from the NOAA Storm
Prediction Center. Radar surfaces are detections and estimates,
not confirmed damage. Last updated Aug 3, 2026.