Thunderstorms with heavy rainfall moved across the region from midday through early evening on the 3rd. In Montgomery County, heavy downpours saturated soil and allowed a large tree to fall onto a house in Silver Spring.
Every event with a place to put it; 6 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.
Thunderstorms with heavy rainfall moved across the region from midday through early evening on the 3rd. In Montgomery County, heavy downpours saturated soil and allowed a large tree to fall onto a house in Silver Spring. One man was seriously injured and was trapped in the home after the tree fell onto the structure. A woman and her children escaped without injury. A total of 2.41 inches of rain fell southeast of Damascus and 1.85 inches was reported in Columbia. In Anne Arundel County, 2.72 inches was recorded in Annapolis. In Carroll County, 2.7 inches fell in one hour in Mt. Airy. A local stream left its banks and ran down streets between homes in a subdivision just east of Main Street. In Howard County, 1.99 inches was reported in Laurel. In Prince George's County, rainfall amounts included 2.80 inches in Brandywine, 2.55 inches near Upper Marlboro, and 2.14 inches in Leeland. In Charles County, up to 3.16 inches was reported in Waldorf and 1.74 inches fell in La Plata.
The Sterling radar (KLWX), 30 km away, was scanning. The volume nearest the first event began at 16:59 UTC.
5 heavy rain, 1 flash flood. Local standard time, as filed.
Saturated soil allowed a tree to fall onto a house and injure one resident.
Flooding was reported in Mt. Airy.
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, September 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: 5156316, 5156317, 5156318, 5156319, 5156320, 5156315.