The estimated-size surface reached 1.25" aloft; NEXRAD logged no point detections over Three Rivers that day. 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 · Mar 6, 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
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.
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.
Only the radar-estimated size surface resolved for Mar 6, 2026 — this storm produced no NEXRAD point detections over Three Rivers, so there is one map to show, not two.
The storm in context
This was Three Rivers's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 6 storms we have logged here. Radar put the day's largest stone over Three Rivers at 1.25" — radar-estimated size aloft.
The Mar 6, 2026 convective day was bigger than Three Rivers: the same system put hail over 486 other tracked cities, 21 of them in Michigan. Nearest: Mendon (8 miles east, up to 1.25"); Colon (15 miles east, up to 0.75"); Cassopolis (22 miles west, up to 0.5").
These maps are stills. In the app this date is one of 6 Three Rivers 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.
“Numerous videos from storm chasers... trained spotters... broadcast media... and the public confirm a tornado in Three Rivers Michigan. Time estimated via radar. (IWX)”
— NOAA / SPC storm report
“Numerous reports of significant damage on the southwest side of Three Rivers. Storm chasers and Emergency Management confirmed multiple tornado touchdowns prior to the (IWX)”
— NOAA / SPC storm report
“Video sent in showing a tornado hitting the Menards store and lifted at least a portion of the roof off on main building. Their storage unit nearby was also damaged by (IWX)”
— NOAA / SPC storm report
“Photo of hail up to a quarter in diameter in a photo taken on Marcellus Rd in Three Rivers. Time estimated via radar. (IWX)”
— NOAA / SPC storm report
“Photo on Facebook shows a hailstone measured to be 1.75 inches. Public reports it fell between Mendon and Three Rivers. Time estimated via radar. (IWX)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Reports came from Fishers Lake — beyond Three Rivers itself.
Damage-capable hail signal
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
Roofing exposure
Potential roof exposure
$47M
Potential roof exposure — 3,900 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Close just 0.5% of the 3,900 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 $819 on top of the $150 plan.
Three Rivers hail history
Estimated-size surface 
Estimated-size surface 
NEXRAD surface 
Estimated-size surface 
NEXRAD surface Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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