Hail in Louisville · Mar 4, 2026
NEXRAD logged 4 hail signatures up to 1.75"; the estimated-size surface reached 0.75" aloft. Open it on the live map to see the swath over the streets.
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Convective day · Mar 4, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Louisville 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
- 44 /100
- Homes exposed
- 41 /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 Louisville 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.
Radar signature field 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.
Estimated size field 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.
The storm in context
Where Mar 4, 2026 sits in Louisville's hail record.
This was Louisville's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 3rd of the 9 storms we have logged here. Radar put the day's largest stone over Louisville at 1.75" — the largest NEXRAD radar signature.
The Mar 4, 2026 convective day was bigger than Louisville: the same system put hail over 303 other tracked cities, 34 of them in Illinois. Nearest: Edgewood (9 miles northwest, up to 2.25"); Mason (14 miles north, up to 2.25"); Newton (20 miles east, up to 1").
These maps are stills. In the app this date is one of 9 Louisville 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 Louisville. 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.
High damage potential
What 1.75" hail means for Louisville roofs.
Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.
Radar reading · not confirmed damage
Roofing exposure
What this storm is worth to a roofer.
Potential roof exposure
$1.3M
Potential roof exposure — 109 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 1 job
- Illustrative work
- ~$15K
Close just 0.5% of the 109 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
March 2028
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.
Names and phones for every home in the footprint: at most $23 on top of the $150 plan.
Louisville hail history
Other storms in Louisville.
Estimated-size surface Jul 26, 2026
0.75"
Estimated-size surface Jul 3, 2026
1.5"
Estimated-size surface Jun 25, 2026
0.75"
Estimated-size surface Jun 11, 2026
0.5"
Estimated-size surface May 16, 2026
2"
NEXRAD surface May 15, 2026
0.75"
Estimated-size surface May 4, 2026
1.75"
Estimated-size surface Apr 27, 2026
1.25"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.
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