NEXRAD logged 7 hail signatures up to 2.75"; the estimated-size surface reached 2" aloft. At 2.75" — baseball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
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Convective day · Jun 29, 2026 · noon–noon UTC
Severity
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
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
Each storm gets two readings: the radar signatures NEXRAD recorded as the cells passed overhead, and a modeled estimate of hail size in the air. They are independent surfaces, so a mismatch between them is expected — and worth reading.
Radar signature field The point detections NEXRAD recorded overhead. Each signature marks where the radar saw hail aloft — it is a detection, not a stone measured on the ground.
Estimated size field Radar-estimated hail size over the swath. The model reports the biggest stone the storm could sustain in the air; what actually fell may have been smaller.
The storm in context
This was Mandan's 6th recorded hail day, arriving 1 day after the Jun 28, 2026 storm. By severity it ranks 1st of the 14 storms we have logged here. Radar put the day's largest stone over Mandan at 2.75" — the largest NEXRAD radar signature.
The Jun 29, 2026 convective day was bigger than Mandan: the same system put hail over 702 other tracked cities, 96 of them in North Dakota. Nearest: Bismarck (16 miles northeast, up to 3.25"); Flasher (18 miles southwest, up to 2.5"); Baldwin (32 miles northeast, up to 4").
These maps are stills. In the app this date is one of 14 Mandan 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
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.
“Trained weather spotter reports hail up to 2 inches in Mandan. Hail ranged from 1.5 to 2.0 inches in size... and lasted for around 5 minutes. Also report numerous 1 inc (BIS)”
— NOAA / SPC storm report
“63 MPH wind gust at 10M measured from Mandan 4S NDAWN. (BIS)”
— NOAA / SPC storm report
Severe hail signal
Two-inch-plus hail is capable of puncturing shingles, breaking skylights or windows, and heavily denting soft materials. The strongest radar bands warrant prompt inspection, but neither the signal nor the footprint confirms damage at a specific address.
Radar reading · not confirmed damage
Roofing exposure
Potential roof exposure
$804K
Potential roof exposure — 67 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Claim window
June 2028
Claims from this storm can typically be filed until around June 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 $14 on top of the $150 plan.
Mandan hail history
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Estimated-size surface Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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