Scattered thunderstorms developed during the hot and humid afternoon of the 1st. These thunderstorms produced very heavy rainfall, gusty winds, and frequent lightning.
Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
The episode as NWS LWX wrote it up.
Scattered thunderstorms developed during the hot and humid afternoon of the 1st. These thunderstorms produced very heavy rainfall, gusty winds, and frequent lightning. In Frederick County, the chimney of a two-story home in Jefferson was struck by lightning. A fire resulted which heavily damaged the structure. A heavy downpour sent Martin's Creek out of its banks in Brunswick. Rushing water from the creek inundated nearby buildings. A city building made of cinder blocks had the rear and part of a side wall washed away. Cars, trucks, and other equipment stored inside were also damaged. Some culvert pipes were washed out and a foot bridge and a fence were washed away. A home across the street from the creek also reported flood damaged to appliances. In Montgomery County, 2.00 inches of rain flooded streets in Damascus. The Potomac Water Treatment Plant reported 1.60 inches of rain. In Carroll County, a wind gust of 41 MPH was recorded in Manchester.
The Sterling radar (KLWX), 56 km away, was scanning. The volume nearest the first event began at 18:49 UTC.
1 lightning, 1 heavy rain, 1 flash flood. Local standard time, as filed.
A home was heavily damaged by a lightning fire.
Several structures were damaged after Martin's Creek overflowed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2000Every state in 2000This day in weather historyWarnings in Maryland, August 2000
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: 5173445, 5173443, 5173444.