Maryland, 1998

Flash Flooding in Maryland, March 9, 1998

March 9, 1998 · NWS LWX · 4 events in 4 counties and zones

A thin band of showers and thunderstorms with torrential rains moved across the eastern and southern suburbs of Washington, weakening as it moved north into the western suburbs of Baltimore. Six roads were closed in Charles Co; an additional 5 roads had high standing water covering them.

Where it happened

Every event with a place to put it; 4 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

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The toll

Deaths
0
Injuries
0
Property damage
$2,000
Crop damage
None recorded
Events
4

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 thin band of showers and thunderstorms with torrential rains moved across the eastern and southern suburbs of Washington, weakening as it moved north into the western suburbs of Baltimore. Observed rainfall of 1 1/2 to 2 inches in two hours, with radar estimates of over 2 1/2 inches, produced flash flooding that brought the Monday morning commute to a standstill over the eastern suburbs.Six roads were closed in Charles Co; an additional 5 roads had high standing water covering them. Along the Prince George's/Anne Arundel Co line, a bus overturned on Brock Bridge Road where the Little Patuxent River overspilled its banks. There were no injuries; all passengers, including 23 children, were evacuated. Other incidents included a temporary road closure at the intersection of federal highway 50 and Kenilworth Avenue (Prince George's Co) due to high standing water; in Landover, early morning commuter and AMTRAK service was delayed due to water rushing across the tracks. Other closures included Tuxedo Road in Cheverly and the intersection of Edmonston and Sunnyside Roads. In southeastern Carroll Co, the upper Patapsco River overspilled its banks at several rural locations.

The radar

The Sterling radar (KLWX), 69 km away, was scanning. The volume nearest the first event began at 09:01 UTC.

Open the radar archive at this moment

Event by event

4 flash flood. Local standard time, as filed.

Flash Flood, Charles

When
March 9, 4:00 AM EST to 9:00 AM EST
Where
Charles County, West Portion
Coordinates
38.474, -77.013 (the zone’s center; the record gives no point)

Flash Flood, Prince George'S

When
March 9, 5:00 AM EST to 10:00 AM EST
Where
Prince George'S County, Northwest Portion
Property damage
$2,000
Coordinates
38.830, -76.847 (the zone’s center; the record gives no point)

Flash Flood, Anne Arundel

When
March 9, 5:00 AM EST to 10:00 AM EST
Where
Anne Arundel County, West Portion
Coordinates
38.994, -76.568 (the zone’s center; the record gives no point)

Flash Flood, Carroll

When
March 9, 5:00 AM EST to 10:00 AM EST
Where
Carroll County, Southeast Portion
Coordinates
39.563, -77.022 (the zone’s center; the record gives no point)

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

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

The same day elsewhere

More

Every storm in Maryland in 1998Every state in 1998This day in weather historyWarnings in Maryland, March 1998

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: 5633235, 5633236, 5633237, 5633238.