Thunderstorm Wind, Montgomery
- When
- August 13, 11:10 PM EST
- Where
- Montgomery County, West Portion
- Property damage
- $500
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 39.130, -77.380
Tree downed onto power line
Damaging Wind and Lightning Strike in Maryland, August 13 to 14, 1999
A thunderstorm moved across the Potomac River around 11:45 PM on the 13th and crossed Montgomery County through 12:30 AM EDT on the 14th. The storm produced winds in excess of 55 MPH and frequent lightning, especially across the western portion of the county.
Where it happened
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $500
- Crop damage
- None recorded
- Events
- 2
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 thunderstorm moved across the Potomac River around 11:45 PM on the 13th and crossed Montgomery County through 12:30 AM EDT on the 14th. The storm produced winds in excess of 55 MPH and frequent lightning, especially across the western portion of the county. At 12:10 AM, county officials reported high winds pushed a tree onto a power line. Another storm producing frequent lightning passed through southern Calvert County around 2:30 AM on the 14th. Two homes in Dunkirk were hit by lightning, but no damage was reported. In addition, 460 residents of Lusby and Solomons experienced power outages when electrical equipment was hit by lightning.
The radar
The national radar mosaic for the moment the first event began.
Event by event
1 thunderstorm wind, 1 lightning. Local standard time, as filed.
Lightning, Calvert
- When
- August 14, 1:30 AM EST
- Where
- Calvert County, Dunkirk
- Reported by
- NEWSPAPER
- Coordinates
- 38.535, -76.531 (the zone’s center; the record gives no point)
Two homes struck by lightning
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.
- Lightning
- A lightning strike that killed, injured or caused damage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Damaging Wind in Pennsylvania, August 13, 1999
- Hail and Damaging Winds in Georgia, August 13, 1999
- Hail and Damaging Winds in New York, August 13, 1999
- Tornadoes in New Hampshire, August 13, 1999
- Lightning Strike in Florida, August 13 to 14, 1999
- Hail and Damaging Winds in Ohio, August 13 to 14, 1999
- Hail and Damaging Winds in West Virginia, August 13, 1999
- Hail and Damaging Winds in Pennsylvania, August 13 to 24, 1999
- Damaging Wind and Lightning Strike in Ohio, August 13, 1999
- Flood and Damaging Winds in Pennsylvania, August 13, 1999
- Damaging Wind in Alabama, August 13, 1999
- Damaging Wind in Vermont, August 13, 1999
More
Every storm in Maryland in 1999Every state in 1999This day in weather historyWarnings in Maryland, August 1999
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 2026-09-24. Each event’s entry at NCEI: 5718883, 5718884.