The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Mercer 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.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.
Convective day · Jun 10, 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
The maps here read the same storm from two angles — point detections from NEXRAD, and modeled hail size aloft. Where the two disagree is informative: it marks where estimated size outran the signatures, or trailed them.
Estimated size field The modeled maximum hail size across the swath, derived from radar aloft — the largest stone the storm could have supported, which is not necessarily what reached the ground.
Only the radar-estimated size surface resolved for Jun 10, 2026 — this storm produced no NEXRAD point detections over Mercer, so there is one map to show, not two.
The storm in context
This was Mercer's 6th recorded hail day, arriving 25 days after the May 16, 2026 storm. By severity it ranks 2nd of the 9 storms we have logged here. Radar put the day's largest stone over Mercer at 0.75" — radar-estimated size aloft.
The Jun 10, 2026 convective day was bigger than Mercer: the same system put hail over 777 other tracked cities, 105 of them in Missouri. Nearest: Lineville (10 miles northwest, up to 0.75"); Powersville (11 miles east, up to 0.75"); Allerton (11 miles north, up to 0.5").
These maps are stills. In the app this date is one of 9 Mercer 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.
“A second supercell in Mercer County produced a brief EF-0 tornado near U.S. Highway 65 north of Princeton on 10 June... continuing to the northeast across Finch Avenue (EAX)”
— NOAA / SPC storm report
“A rapidly developing supercell thunderstorm produced a tornado north of Ravanna... MO... on the afternoon of 10 June. The storm caused extensive damage to a garage and (EAX)”
— NOAA / SPC storm report
“Public recorded video of tornado on the ground. Approximate location estimated by radar. (EAX)”
— NOAA / SPC storm report
“Social media report. Time and location estimated. (EAX)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
Hail was reported over 14 minutes, from to .
Reports came from Princeton — beyond Mercer itself.
Near the severe threshold
A signal this size sits near the National Weather Service severe threshold. Aging shingles and soft metals such as vents, flashing, and gutters may be more vulnerable; roof age, wind, and material condition all matter, and only an inspection can confirm damage.
Radar reading · not confirmed damage
Roofing exposure
Potential roof exposure
$5.4M
Potential roof exposure — 449 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Close just 0.5% of the 449 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
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 $94 on top of the $150 plan.
Mercer hail history
Estimated-size surface 
Estimated-size surface 
Estimated-size surface 
Estimated-size surface 
Estimated-size surface 
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.
7-day free trial in the iPhone app. No card required to start.
For iPhone. Android coming soon.
Web trial: 7 days free. Card required. $150/month after the trial unless cancelled.