Hail in Mountainburg · May 9, 2026
NEXRAD logged 0 hail signatures up to 1"; the estimated-size surface reached 0" aloft. Open it on the live map to see the swath over the streets.
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Convective day · May 9, 2026 · noon–noon UTC
Severity
The 4th most severe storm Mountainburg 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
- 0 /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 Mountainburg 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 May 9, 2026 sits in Mountainburg's hail record.
This was Mountainburg's 2nd recorded hail day, arriving 11 days after the Apr 28, 2026 storm. By severity it ranks 4th of the 6 storms we have logged here. Radar put the day's largest stone over Mountainburg at 1" — the largest NEXRAD radar signature.
The May 9, 2026 convective day was bigger than Mountainburg: the same system put hail over 268 other tracked cities, 12 of them in Arkansas. Nearest: Van Buren (9 miles southwest, up to 2.75"); Muldrow (17 miles west, up to 3.25"); Fort Smith (21 miles southwest, up to 0").
These maps are stills. In the app this date is one of 6 Mountainburg 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 Mountainburg. 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.
Damage-capable hail signal
What 1" hail means for Mountainburg 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
Mountainburg hail history
Other storms in Mountainburg.
Estimated-size surface Aug 17, 2026
1.25"
Estimated-size surface Jul 11, 2026
0.5"
Estimated-size surface Jun 2, 2026
1.25"
Estimated-size surface May 19, 2026
0.5"
Estimated-size surface Apr 28, 2026
1.75"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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For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.