The estimated-size surface reached 1.5" aloft; NEXRAD logged no point detections over Gridley 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 · Jun 11, 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 11, 2026 — this storm produced no NEXRAD point detections over Gridley, so there is one map to show, not two.
The storm in context
This was Gridley's 4th recorded hail day, arriving 38 days after the May 4, 2026 storm. By severity it ranks 1st of the 6 storms we have logged here. Radar put the day's largest stone over Gridley at 1.5" — radar-estimated size aloft.
The Jun 11, 2026 convective day was bigger than Gridley: the same system put hail over 648 other tracked cities, 157 of them in Illinois. Nearest: Long Point (15 miles north, up to 0.5"); Pontiac (17 miles northeast, up to 1.5"); Rutland (17 miles northwest, up to 1.25").
These maps are stills. In the app this date is one of 6 Gridley 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.
“NWS Survey confirms a preliminary EF-1 tornado. Most significant damage found consistent with winds of 105 mph. Peak width of 900 yards... length of 33.6 miles. (LOT)”
— 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 Flanagan — beyond Gridley itself.
High damage potential
Hail around an inch and a half is capable of cracking shingles, stripping granules, and denting gutters, vents, and siding. Risk is usually greatest near the strongest radar signal, but property-level damage still requires an on-site inspection.
Radar reading · not confirmed damage
Roofing exposure
Potential roof exposure
$1.2M
Potential roof exposure — 100 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Close just 0.5% of the 100 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 $21 on top of the $150 plan.
Gridley hail history
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.
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