Maryland, 2024

Hail and Damaging Winds in Maryland, July 15, 2024

July 15, 2024 · NWS LWX · 12 events in 3 counties and zones

A stalled front amid an unstable airmass spawned clusters of strong to severe thunderstorms, one of which produced considerable wind damage over far northern Virginia.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
$71,000
Crop damage
None recorded
Events
12

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LWX wrote it up.

A stalled front amid an unstable airmass spawned clusters of strong to severe thunderstorms, one of which produced considerable wind damage over far northern Virginia.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before the first event at Jul 15, 1:40 PM EST, 2 hours 7 minutes earlier.

Area forecast discussion, Jul 15, 1:40 PM EST, 2 hours 7 minutes before
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Hazardous weather outlook, Jul 15, 3:27 PM EST, 20 minutes before
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The radar

The Sterling radar (KLWX), 15 km away, was scanning. The volume nearest the first event began at 20:47 UTC.

Open the radar archive at this moment

Event by event

10 thunderstorm wind, 2 hail. Local standard time, as filed.

Thunderstorm Wind, Montgomery

When
July 15, 3:47 PM EST
Where
Montgomery County, 3.61 mi SW of Poolesville
Measured
52 kt (60 mph) estimated gust
Property damage
$2,000
Reported by
Emergency Manager
Coordinates
39.111, -77.465

Trees and wires blew down in the 15600 block of Edwards Ferry Road.

Thunderstorm Wind, Montgomery

When
July 15, 4:17 PM EST
Where
Montgomery County, 1.35 mi E of Travilah
Measured
52 kt (60 mph) estimated gust
Property damage
$2,000
Reported by
Emergency Manager
Coordinates
39.067, -77.245

There were two reports of trees blown down in North Potomac.

Thunderstorm Wind, Montgomery

When
July 15, 4:24 PM EST
Where
Montgomery County, 1.61 mi ENE of Westmore
Measured
52 kt (60 mph) estimated gust
Property damage
$2,000
Reported by
Emergency Manager
Coordinates
39.106, -77.121

Trees blew down at the intersection of Southlawn Lane and Avery Road.

Hail, Carroll

When
July 15, 4:25 PM EST
Where
Carroll County, 1.33 mi SE of Brummel
Measured
1 in hail
Reported by
Trained Spotter
Coordinates
39.586, -76.913

Quarter size hail was reported along Coon Club Road.

Thunderstorm Wind, Allegany

When
July 15, 4:30 PM EST
Where
Allegany County, 76.96 mi E of Belle Grove
Measured
56 kt (64 mph) estimated gust
Property damage
$15,000
Reported by
Trained Spotter
Coordinates
39.608, -76.888

Trained weather spotters reported significant tree damage along MD-482 Hampstead-Mexico Road with multiple wires down near the intersection of Brilhart Mill Road.

Thunderstorm Wind, Carroll

When
July 15, 4:31 PM EST
Where
Carroll County, 1.63 mi E of Greenmount
Measured
56 kt (64 mph) estimated gust
Property damage
$10,000
Reported by
Emergency Manager
Coordinates
39.628, -76.840

Numerous trees blew down along Dave Rill Road between Gross Mill Road and Upper Beckleysville Road.

Thunderstorm Wind, Carroll

When
July 15, 4:31 PM EST
Where
Carroll County, 1.36 mi E of Greenmount
Measured
56 kt (64 mph) estimated gust
Property damage
$10,000
Reported by
Trained Spotter
Coordinates
39.627, -76.845

Numerous trees blew down in the 1900 block of Fairmount Road.

Thunderstorm Wind, Carroll

When
July 15, 4:31 PM EST
Where
Carroll County, 2.51 mi E of Greenmount
Measured
52 kt (60 mph) estimated gust
Property damage
$3,000
Reported by
Trained Spotter
Coordinates
39.630, -76.823

Several large tree limbs blew down on Dave Rill Road and on a property along the roadway.

Thunderstorm Wind, Carroll

When
July 15, 4:33 PM EST
Where
Carroll County, 1.1 mi SE of Greenmount
Measured
54 kt (62 mph) measured gust
Reported by
Mesonet
Coordinates
39.618, -76.856

The Hampstead Volunteer Fire Department Ambient Weather Station measured a wind gust of 54 knots (62 MPH).

Hail, Carroll

When
July 15, 4:35 PM EST
Where
Carroll County, 0.41 mi NW of Hampstead
Measured
1 in hail
Reported by
Public
Coordinates
39.604, -76.856

Quarter size hail was reported on Highfield Drive in Hampstead.

Thunderstorm Wind, Montgomery

When
July 15, 4:43 PM EST
Where
Montgomery County, 0.88 mi SE of Woodhaven
Measured
56 kt (64 mph) estimated gust
Property damage
$25,000
Reported by
Emergency Manager
Coordinates
38.990, -77.120

There were nearly two dozen reports of trees blown down in and around Bethesda.

Thunderstorm Wind, Montgomery

When
July 15, 4:47 PM EST
Where
Montgomery County, 1.26 mi N of Takoma Park
Measured
52 kt (60 mph) estimated gust
Property damage
$2,000
Reported by
Emergency Manager
Coordinates
38.988, -76.999

Tree limbs blew down at the intersection of Garland Avenue and Prospect Street.

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Maryland in 2024Every state in 2024This day in weather historyWarnings in Maryland, July 2024

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1187201, 1187202, 1187203, 1187204, 1187205, 1187206, 1187207, 1187208, 1187210, 1187211, 1187212, 1187213.