NEXRAD logged 6 hail signatures up to 2"; the estimated-size surface reached 1.5" aloft. At 2" — tennis ball — this is a severe hail signal associated with roof damage. Open it on the live map to see the swath over the streets.
A tornado was also reported to the National Weather Service during this storm. The ground reports below show where it was filed.
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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
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
This was Andover's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 4 storms we have logged here. Radar put the day's largest stone over Andover at 2" — the largest NEXRAD radar signature.
The Jun 29, 2026 convective day was bigger than Andover: the same system put hail over 702 other tracked cities, 51 of them in South Dakota. Nearest: Pierpont (7 miles east, up to 2"); Langford (10 miles northeast, up to 1.75"); Bristol (12 miles southeast, up to 1.5").
These maps are stills. In the app this date is one of 4 Andover 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.
“Update to the previous two tornado reports near Andover. Photo and video of the tornado indicated that the tornado near this location. NWS Storm Survey with the Day Cou (ABR)”
— NOAA / SPC storm report
“Picture and video of the tornado shared via Facebook. (ABR)”
— NOAA / SPC storm report
“Tornado observed and quickly became rain wrapped. (ABR)”
— NOAA / SPC storm report
“Mesonet station 45 Andover (SDDOT). (ABR)”
— 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
$648K
Potential roof exposure — 54 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 $11 on top of the $150 plan.
Andover hail history
Estimated-size surface 
Estimated-size surface 
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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