Maryland, 2000

Flash Flooding and Hail in Maryland, July 14 to 15, 2000

July 14 to 15, 2000 · NWS LWX · 23 events in 11 counties and zones

A cold front moved across the region during the evening of the 14th. Thunderstorms that developed ahead and along this front produced very heavy rainfall, frequent lightning, large hail, and winds in excess of 55 MPH.

Where it happened

Every event with a place to put it; 16 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

Open the live radar over this ground

The toll

Deaths
1
Injuries
0
Property damage
$159,000
Crop damage
$500,000
Events
23

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 cold front moved across the region during the evening of the 14th. Thunderstorms that developed ahead and along this front produced very heavy rainfall, frequent lightning, large hail, and winds in excess of 55 MPH. Across Baltimore County, heavy rain flooded several roads. In Baltimore, flooding was concentrated between Back River and Middle River where some stranded motorists had to be rescued. A total of 3.00 inches of rain fell in Towson and 1.78 inches fell in Perry Hall. Golfball sized hail fell in Rosedale and Baltimore and pea sized hail fell in Overlea. Several roads were also flooded in Anne Arundel County after up to 6 inches of rain fell. Rainfall totals included 5.98 inches in Edgewater, 2.81 inches in Crofton, 2.40 inches in Annapolis, 2.14 inches in Hillsmere, 1.86 inches in Davidsonville, and 1.67 inches in Owings Beach. In Prince George's County, roads in College Park and Cheverly were closed by high water. Rainfall totals included 2.76 inches at Harry Truman Drive, 2.53 inches at Lake Arbor, 2.29 inches in Landover, and 1.60 inches in Oxon Hill. Marble sized hail fell in Oxon Hill and pea sized hail fell in Suitland. In Montgomery County, a 41 MPH wind gust was recorded at Montgomery College and 10 feet high corn was downed near Germantown. Over an inch of rain fell in 25 minutes in Damascus. In Frederick County, 1.65 inches fell in Frederick. In Washington County, winds in excess of 55 MPH downed trees and power lines in Williamsport. Half dollar sized hail fell in Clear Spring and 3.07 inches of rain was reported in Sharpsburg. In Harford County, a 46 year old man who was walking down a sidewalk in Joppatowne with his cell phone was struck and killed by lightning near a tree. In Darlington, 15 cows taking shelter from the storm under a tree were killed by lightning. Two other cows were killed by a felled tree. A tree was also downed in Havre de Grace. In Fallston, lightning struck a garbage truck and sparked a fire which destroyed the vehicle. Across the northeast portion of the county, hail estimated at the size of a dime damaged $500,000 worth of crops. In Charles County, dime sized hail fell near Bryan's Road. Flooding was reported in Pomfret. Rainfall totals included 2.95 inches in Indian Head, 2.65 inches in La Plata, 2.55 inches in Pomfret, and 1.67 inches in Waldorf. In Calvert County, 1.6 inches fell in Dunkirk, Sunderland, and Huntingtown. In St. Mary's County, a dog tied to a tree in Avenue was killed when lightning struck the tree. Lightning damaged a home in Morganza and a sawmill in Charlotte Hall. Heavy rain flooded several roads across the county and downed a tree. A total of 3.40 inches of rain fell in Tall Timbers.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

6 lightning, 5 flash flood, 5 heavy rain, 4 hail, 3 thunderstorm wind. Local standard time, as filed.

Flash Flood, St. Mary'S

When
July 14, 10:35 AM EST to July 15, 2:30 AM EST
Where
St. Mary'S County, Countywide
Reported by
EMERGENCY MANAGER
Coordinates
38.216, -76.529 (the zone’s center; the record gives no point)

Several roads were flooded and a tree was downed.

Lightning, Harford

When
July 14, 2:45 PM EST
Where
Harford County, Fallston
Property damage
$50,000
Reported by
NEWSPAPER
Coordinates
39.536, -76.299 (the zone’s center; the record gives no point)

A truck was destroyed by a fire started by lightning.

Thunderstorm Wind, Washington

When
July 14, 3:40 PM EST
Where
Washington County, Williamsport
Property damage
$1,000
Reported by
TRAINED SPOTTER
Coordinates
39.600, -77.817

Trees and power lines were downed.

Flash Flood, Baltimore

When
July 14, 5:00 PM EST to 6:30 PM EST
Where
Baltimore County, Countywide
Reported by
NEWSPAPER
Coordinates
39.443, -76.616 (the zone’s center; the record gives no point)

Several roads were flooded.

Flash Flood, Baltimore City (C)

When
July 14, 5:00 PM EST to 6:30 PM EST
Where
Baltimore City (C) County, Countywide
Reported by
NEWSPAPER
Coordinates
39.290, -76.612 (the zone’s center; the record gives no point)

Several roads were flooded.

Hail, Baltimore

When
July 14, 5:15 PM EST
Where
Baltimore County, Rosedale
Measured
1.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
39.333, -76.517

Golfball sized hail fell.

Hail, Baltimore City (C)

When
July 14, 5:15 PM EST
Where
Baltimore City (C) County, Baltimore
Measured
1.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
39.300, -76.617

Golfball sized hail fell.

Hail, Charles

When
July 14, 6:22 PM EST
Where
Charles County, 1 mi S of Bryans Road
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
38.600, -77.067

Dime sized hail fell.

Lightning, Harford

When
July 14, 6:30 PM EST
Where
Harford County, Joppa
Deaths
1 direct, 0 indirect
Reported by
NEWSPAPER
Coordinates
39.536, -76.299 (the zone’s center; the record gives no point)

A man with a cell phone was hit by lightning near a tree while walking down a sidewalk.

Lightning, Harford

When
July 14, 6:30 PM EST
Where
Harford County, Darlington
Property damage
$75,000
Reported by
OTHER FEDERAL AGENCY
Coordinates
39.536, -76.299 (the zone’s center; the record gives no point)

Fifteen cows in a field were killed by lightning.

Thunderstorm Wind, Harford

When
July 14, 6:30 PM EST
Where
Harford County, Darlington
Property damage
$10,000
Reported by
OTHER FEDERAL AGENCY
Coordinates
39.633, -76.200

A downed tree killed two cows.

Hail, Harford

When
July 14, 6:30 PM EST
Where
Harford County, Northeast Portion
Measured
0.75 in hail
Crop damage
$500,000
Reported by
OTHER FEDERAL AGENCY
Coordinates
39.667, -76.267

Hail estimated at the sized of a dime damaged crops.

Thunderstorm Wind, Harford

When
July 14, 6:30 PM EST
Where
Harford County, Havre de Grace
Property damage
$500
Reported by
NEWSPAPER
Coordinates
39.550, -76.100

A tree was downed.

Heavy Rain, Washington

When
July 14, 7:00 PM EST to 9:30 PM EST
Where
Washington County, Countywide
Reported by
TRAINED SPOTTER
Coordinates
39.604, -77.814 (the zone’s center; the record gives no point)

Heavy Rain, Frederick

When
July 14, 8:00 PM EST to 10:30 PM EST
Where
Frederick County, Countywide
Reported by
TRAINED SPOTTER
Coordinates
39.472, -77.398 (the zone’s center; the record gives no point)

Heavy Rain, Montgomery

When
July 14, 9:00 PM EST to 11:30 PM EST
Where
Montgomery County, Countywide
Reported by
TRAINED SPOTTER
Coordinates
39.136, -77.204 (the zone’s center; the record gives no point)

Flash Flood, Prince George'S

When
July 14, 9:00 PM EST to 11:59 PM EST
Where
Prince George'S County, Countywide
Reported by
NEWSPAPER
Coordinates
38.830, -76.847 (the zone’s center; the record gives no point)

Roads in College Park and Route 202 were closed by high water.

Heavy Rain, Charles

When
July 14, 9:30 PM EST to 11:59 PM EST
Where
Charles County, Countywide
Reported by
TRAINED SPOTTER
Coordinates
38.474, -77.013 (the zone’s center; the record gives no point)

Heavy Rain, Calvert

When
July 14, 10:00 PM EST to 11:59 PM EST
Where
Calvert County, Countywide
Reported by
TRAINED SPOTTER
Coordinates
38.535, -76.531 (the zone’s center; the record gives no point)

Flash Flood, Anne Arundel

When
July 14, 10:00 PM EST to July 15, 1:00 AM EST
Where
Anne Arundel County, Countywide
Reported by
NEWSPAPER
Coordinates
38.994, -76.568 (the zone’s center; the record gives no point)

Several roads were flooded by up to 6 inches of rain.

Lightning, St. Mary'S

When
July 15, 12:00 AM EST
Where
St. Mary'S County, Morganza
Property damage
$2,000
Reported by
EMERGENCY MANAGER
Coordinates
38.216, -76.529 (the zone’s center; the record gives no point)

Lightning damaged a home.

Lightning, St. Mary'S

When
July 15, 12:00 AM EST
Where
St. Mary'S County, Avenue
Reported by
EMERGENCY MANAGER
Coordinates
38.216, -76.529 (the zone’s center; the record gives no point)

A dog tied to a tree was killed when lightning struck the tree.

Lightning, St. Mary'S

When
July 15, 12:00 AM EST
Where
St. Mary'S County, Charlotte Hall
Property damage
$20,000
Reported by
EMERGENCY MANAGER
Coordinates
38.216, -76.529 (the zone’s center; the record gives no point)

A sawmill was damaged by a lightning strike.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Lightning, Harford2000-07-1446MaleUnder TreeDirect

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.
Lightning
A lightning strike that killed, injured or caused damage.
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.
Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.

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

The same day elsewhere

More

Every storm in Maryland in 2000Every state in 2000This day in weather historyWarnings in Maryland, July 2000

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: 5163917, 5163918, 5163919, 5163913, 5163914, 5163920, 5163921, 5163922, 5163923, 5163924, 5163972, 5163973, 5163974, 5163908, 5163909, 5163910, 5163916, 5163911, 5163912, 5163915, 5164273, 5164274, 5164275.