Hail in Gaithersburg · Jul 18, 2026
The estimated-size surface reached 0.75" aloft; NEXRAD logged no point detections over Gaithersburg 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 4th most severe storm Gaithersburg 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
- 76 /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 Gaithersburg 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.
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.
Only the radar-estimated size surface resolved for Jul 18, 2026 — this storm produced no NEXRAD point detections over Gaithersburg, so there is one map to show, not two.
The storm in context
Where Jul 18, 2026 sits in Gaithersburg's hail record.
This was Gaithersburg's 3rd recorded hail day, arriving 13 days after the Jul 5, 2026 storm. By severity it ranks 4th of the 4 storms we have logged here. Radar put the day's largest stone over Gaithersburg at 0.75" — radar-estimated size aloft.
The Jul 18, 2026 convective day was bigger than Gaithersburg: the same system put hail over 377 other tracked cities, 24 of them in Maryland. Nearest: Brinklow (8 miles east, up to 0.5"); Clarksville (8 miles east, up to 0.5"); Columbia (13 miles east, up to 0.75").
These maps are stills. In the app this date is one of 4 Gaithersburg 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.
The National Weather Service logged no spotter reports for this storm over Gaithersburg. That absence is ordinary — filing a report takes a person on the spot who saw the hail and phoned it in. What stands as the record for this date is the radar above, which caught the storm regardless.
Near the severe threshold
What 0.75" hail means for Gaithersburg 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
$75M
Potential roof exposure — 6,251 homes × the ~$12,000 industry-average hail roof claim. Exposure, not confirmed damage.
- Illustrative jobs
- 31 jobs
- Illustrative work
- ~$465K
Close just 0.5% of the 6,251 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 $1,313 on top of the $150 plan.
Gaithersburg hail history
Other storms in Gaithersburg.
Estimated-size surface Jul 28, 2026
1"
Estimated-size surface Jul 5, 2026
2"
Estimated-size surface Jul 4, 2026
1.75"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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