The estimated-size surface reached 2" aloft; NEXRAD logged no point detections over Layton that day. 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 · Sep 18, 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.
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.
Only the radar-estimated size surface resolved for Sep 18, 2026 — this storm produced no NEXRAD point detections over Layton, so there is one map to show, not two.
The storm in context
This was Layton's 2nd recorded hail day, arriving 18 days after the Aug 31, 2026 storm. By severity it ranks 1st of the 2 storms we have logged here. Radar put the day's largest stone over Layton at 2" — radar-estimated size aloft.
The Sep 18, 2026 convective day was bigger than Layton: the same system put hail over 157 other tracked cities, 23 of them in Utah. Nearest: Clearfield (5 miles west, up to 1.5"); Farmington (7 miles south, up to 1.75"); Kaysville (9 miles southwest, up to 1.5").
These maps are stills. In the app this date is one of 2 Layton 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.
“Tornado seen in video shared on social media... showing rotation reaching the ground and debris being lofted into the air. The point that it touched down was near a sum (SLC)”
— NOAA / SPC storm report
“Public report of measured half-dollar sized hail. (SLC)”
— NOAA / SPC storm report
“From a picture shared with our office via social media... reported as Kaysville just west of I-15. (SLC)”
— NOAA / SPC storm report
Storm forensics
Read from the arrival times and locations of the NOAA ground reports, not a radar-measured storm track.
The storm tracked north at roughly 5 mph, based on the timing of ground reports.
Hail was reported over 30 minutes, from to .
Reports came from Kaysville and Fruit Heights — beyond Layton itself.
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
$198M
Potential roof exposure — 16,506 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Close just 0.5% of the 16,506 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
September 2028
Claims from this storm can typically be filed until around September 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 $3,466 on top of the $150 plan.
Layton hail history
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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