Hail in Jamestown Jul 21, 2026
Hit 13 days agoNEXRAD caught this storm: 2 hail signatures up to 0.5". The radar-estimated size surface had no signal to model this day.
0.5"
≈ pea to penny · the largest NEXRAD radar signature247
0
none filedJamestown's only recorded storm in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Hail size
- 13 /100
- Homes exposed
- 48 /100
- Ground truth
- 0 /100
Largest hailstone — the top predictor of roof damage.
How many homes sit inside the storm's footprint.
Independent storm reports filed with the NWS.
How Jamestown saw the hail — from two instruments
Two instruments, one storm: NEXRAD logs the point signatures it detected overhead, while the estimated-size surface models how large the hail aloft could have grown. Agreement between them is not guaranteed — the gaps are where the model ran ahead of, or behind, the detections.
NEXRAD's hail signatures for this storm: the spots the radar detected from above. A detection overhead is not the same thing as a confirmed stone below.
Only the NEXRAD radar-signature surface resolved for Jul 21, 2026 — the estimated-size swath had no hail signal to model for this storm, so there is one map to show, not two.
Where Jul 21, 2026 sits in Jamestown's hail record
This was Jamestown's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 1 storms we have logged here. Radar put the day's largest stone over Jamestown at 0.5" — the largest NEXRAD radar signature.
The Jul 21, 2026 convective day was bigger than Jamestown: the same system put hail over 703 other tracked cities, 28 of them in New York. Nearest: Lakewood (0 miles north, up to 0.5"); Russell (21 miles southeast, up to 0.5"); Ripley (22 miles west, up to 1").
These maps are stills from Jamestown's Jul 21, 2026 storm. In the Overview app the same surfaces are live — radar updating in real time, radar-estimated hail size as it forms, and NWS spotter reports pinned where they're filed — with a radar replay you can scrub back over any past day.
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 Jamestown. 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.
What 0.5" hail means for Jamestown roofs
Hail under three-quarters of an inch stays below the National Weather Service severe threshold and rarely breaks shingles outright. But repeated small-hail events accelerate granule loss and shorten roof life — on older roofs, it's still worth a conversation.
$3M
Potential roof exposure — 247 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Jamestown on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Jamestown storm history — this Jul 21, 2026 storm included — sits underneath. When you're ready, draw this storm's footprint and pull highly accurate homeowner contact information for every address inside it.
Highly accurate contact information starting at $0.23 per address — every contact included. Digital leads cost $15–$40. Start with a 7-day free trial — no credit card required. See pricing
1 recorded storm day in Jamestown, NY