Hail in Keymar Jul 4, 2026
Hit 30 days agoBoth radar surfaces caught this storm: NEXRAD logged 17 hail signatures up to 1.75", and the radar-estimated size reached 1" aloft.
1.75"
≈ golf ball · the largest NEXRAD radar signature3,444
0
none filedThe most severe storm Keymar has seen in the last 12 months
Overview's storm severity score weighs hailstone size, homes in the footprint, and ground-truth reports.
- Hail size
- 44 /100
- Homes exposed
- 71 /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 Keymar 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.
The point detections NEXRAD recorded overhead. Each signature marks where the radar saw hail aloft — it is a detection, not a stone measured on the ground.
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.
Where Jul 4, 2026 sits in Keymar's hail record
This was Keymar's 1st recorded hail day — the first hail day in our records for the city. By severity it ranks 1st of the 2 storms we have logged here. Radar put the day's largest stone over Keymar at 1.75" — the largest NEXRAD radar signature.
The Jul 4, 2026 convective day was bigger than Keymar: the same system put hail over 2,035 other tracked cities, 61 of them in Maryland. Nearest: Frederick (9 miles southwest, up to 3.25"); Woodsboro (9 miles southwest, up to 3.25"); Taneytown (13 miles northeast, up to 1").
These maps are stills from Keymar's Jul 4, 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 Keymar. 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 1.75" hail means for Keymar roofs
At an inch and a half, hail cracks shingles, strips granules down to the mat, and dents gutters, vents, and siding. A footprint like this typically produces a wave of insurance claims — and the contractor who reaches the homeowner first usually gets the inspection.
$41M
Potential roof exposure — 3,444 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.Track hail over Keymar on the live map
Radar updates in real time, spotter reports appear on the map as they're filed, and the full Keymar storm history — this Jul 4, 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
2 recorded storm days in Keymar, MD
