Hail in Karval · Aug 13, 2026
NEXRAD logged 0 hail signatures up to 0"; the estimated-size surface reached 0.75" aloft. Open it on the live map to see the swath over the streets.
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Convective day · Aug 13, 2026 · noon–noon UTC
Severity
The 6th most severe storm Karval 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
- 40 /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 Karval saw the hail — from two instruments
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.
Radar signature field Where NEXRAD flagged hail as the storm passed — point signatures from the radar, which indicate hail overhead rather than confirm what landed.
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.
The storm in context
Where Aug 13, 2026 sits in Karval's hail record.
This was Karval's 6th recorded hail day, arriving 16 days after the Jul 28, 2026 storm. By severity it ranks 6th of the 8 storms we have logged here. Radar put the day's largest stone over Karval at 0.75" — radar-estimated size aloft.
The Aug 13, 2026 convective day was bigger than Karval: the same system put hail over 437 other tracked cities, 22 of them in Colorado. Nearest: Hugo (21 miles north, up to 1.75"); Sugar City (29 miles southwest, up to 0.75"); Ramah (36 miles northwest, up to 0.5").
These maps are stills. In the app this date is one of 8 Karval 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.
No ground reports were filed with the National Weather Service for this storm over Karval. That is common: a report depends on someone being there to see it and take the time to call it in. The radar surfaces above are the record here — the storm was detected from above even though no one on the ground logged it.
Near the severe threshold
What 0.75" hail means for Karval 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
$1.2M
Potential roof exposure — 97 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
Claim window
August 2028
Claims from this storm can typically be filed until around August 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 $20 on top of the $150 plan.
Karval hail history
Other storms in Karval.
Estimated-size surface Sep 9, 2026
1.75"
Estimated-size surface Aug 15, 2026
0.75"
Estimated-size surface Jul 28, 2026
3.5"
Estimated-size surface Jul 10, 2026
1.75"
Estimated-size surface Jul 8, 2026
1"
Estimated-size surface Jul 7, 2026
1"
Estimated-size surface Apr 11, 2026
1"Take your next area into the field.
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