Hail in Knox · Jul 18, 2026
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Knox that day. Open it on the live map to see the swath over the streets.
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Convective day · Jul 18, 2026 · noon–noon UTC
Severity
The 3rd most severe storm Knox has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Peak hail signal
- 19 /100
- Homes exposed
- 60 /100
- Ground truth
- 0 /100
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
How Knox saw the hail — from two instruments
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 Jul 18, 2026 — this storm produced no NEXRAD point detections over Knox, so there is one map to show, not two.
The storm in context
Where Jul 18, 2026 sits in Knox's hail record.
This was Knox's 5th recorded hail day, arriving 14 days after the Jul 4, 2026 storm. By severity it ranks 3rd of the 6 storms we have logged here. Radar put the day's largest stone over Knox at 0.75" — radar-estimated size aloft.
The Jul 18, 2026 convective day was bigger than Knox: the same system put hail over 377 other tracked cities, 27 of them in Pennsylvania. Nearest: Cranberry (7 miles north, up to 0.5"); Shippenville (7 miles north, up to 0.5"); Clarion (8 miles east, up to 0.75").
These maps are stills. In the app this date is one of 6 Knox 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
What people on the ground reported
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.
Nobody on the ground filed a report over Knox for this date, which says more about who was watching than about the storm: spotter reports only exist where there is an observer. The radar surfaces above carry the evidence for this one.
Near the severe threshold
What 0.75" hail means for Knox roofs.
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
What this storm is worth to a roofer.
Potential roof exposure
$13M
Potential roof exposure — 1,043 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 5 jobs
- Illustrative work
- ~$75K
Close just 0.5% of the 1,043 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
July 2028
Claims from this storm can typically be filed until around July 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 $219 on top of the $150 plan.
Estimated-size surface Sep 2, 2026
0.5"
Estimated-size surface Jul 4, 2026
1.25"
Estimated-size surface Jul 3, 2026
1"
Estimated-size surface Jun 11, 2026
0.5"
NEXRAD surface Mar 22, 2026
1.5"The next storm won’t wait for you.
Set your territory and alerts today. When hail hits, use Overview to choose your streets and get moving.
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