A line of thunderstorms which produced winds in excess of 55 MPH, large hail, heavy rain, and frequent lighting moved across the area during the afternoon and evening of the 15th.  In Washington County, several trees were downed on the north end of Hagerstown.  Rainfall totals included 2.62 inches in Sharpsburg and 2.05 inches in Williamsport.  In Frederick County, high winds downed several trees and power lines and destroyed several structures.  A wind gust of 60 MPH destroyed a barn near Brunswick and a wind gust of 81 MPH was recorded south of Frederick which blew out windows on a home.  Trees and power lines were downed in Ijamsville, Buckeystown, Lime Kiln, Burkittsville, Mt. Airy, Adamstown, Point of Rocks, Green Valley, Monrovia, Carroll Manor, and south Frederick. Trees blocked Routes 15, 464, 340, 180, and 85.  An 85 square foot bank barn and a 125 year old summer kitchen were flattened near Jefferson.  A trailer was overturned near Urbana Park.  A home was damaged by a felled tree near New Market and a barn roof was removed near Monrovia.  Two homes were damaged by lightning strikes in Thurmont.  Rainfall amounts included 2.25 inches in Frederick and 1.81 inches in Brunswick.  In Montgomery County, quarter sized hail fell in Germantown and dime sized hail fell in Silver Spring.  In Prince George's County, rainfall totals included 1.93 inches in Landover, 1.90 inches on Lottsford Road, and 1.59 inches on Harry Truman Drive. South of Charles County on the Potomac River, high winds and waves capsized a pleasure boat with 5 people aboard.  Four people were rescued by other boaters after swimming to shore.  The 5th boater, a 28 year old man, was never found and presumed dead.  In Anne Arundel County, a wind gust of 59 MPH downed power lines in Glen Burnie.  Nearly 15,000 customers across the county lost power.  In St. Mary's County, 1.74 inches of rain fell in Tall Timbers.

Thunderstorm Wind in FREDERICK, MARYLAND
From 15-JUN-00 19:04:00 to 15-JUN-00 19:04:00 (EST)
Location: IJAMSVILLE
Property damage: .5K
Reported by: NEWSPAPER

Tree branches were downed onto power lines.

Thunderstorm Wind in FREDERICK, MARYLAND
From 15-JUN-00 15:24:00 to 15-JUN-00 15:24:00 (EST)
Location: BRUNSWICK
Magnitude: 52 M
Reported by: TRAINED SPOTTER

A wind gust of 60 MPH was recorded.

Heavy Rain in FREDERICK, MARYLAND
From 15-JUN-00 15:00:00 to 15-JUN-00 16:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Hail in MONTGOMERY, MARYLAND
From 15-JUN-00 18:40:00 to 15-JUN-00 18:40:00 (EST)
Location: GERMANTOWN
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Quarter sized hail fell.

Heavy Rain in WASHINGTON, MARYLAND
From 15-JUN-00 14:00:00 to 15-JUN-00 16:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Thunderstorm Wind in FREDERICK, MARYLAND
From 15-JUN-00 15:35:00 to 15-JUN-00 15:35:00 (EST)
Location: FREDERICK
Magnitude: 72 M
Reported by: TRAINED SPOTTER

A wind gust of 81 MPH was recorded.

Thunderstorm Wind in WASHINGTON, MARYLAND
From 15-JUN-00 14:15:00 to 15-JUN-00 14:30:00 (EST)
Location: HAGERSTOWN
Property damage: 15K
Reported by: TRAINED SPOTTER

Several trees were downed.

Heavy Rain in PRINCE GEORGE'S, MARYLAND
From 15-JUN-00 18:30:00 to 15-JUN-00 20:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Hail in MONTGOMERY, MARYLAND
From 15-JUN-00 18:50:00 to 15-JUN-00 18:50:00 (EST)
Location: SILVER SPG
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Dime sized hail fell.

Thunderstorm Wind in ANNE ARUNDEL, MARYLAND
From 15-JUN-00 19:28:00 to 15-JUN-00 19:28:00 (EST)
Location: GLEN BURNIE
Magnitude: 52 M
Property damage: 2K
Reported by: TRAINED SPOTTER

Winds gusting to 59 MPH downed power lines.

Lightning in FREDERICK, MARYLAND
From 15-JUN-00 18:45:00 to 15-JUN-00 18:55:00 (EST)
Location: THURMONT
Property damage: 4.3K
Reported by: EMERGENCY MANAGER

Two homes were damaged by lightning.

Heavy Rain in ST. MARY'S, MARYLAND
From 15-JUN-00 18:30:00 to 15-JUN-00 20:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Thunderstorm Wind in CHARLES, MARYLAND
From 15-JUN-00 19:15:00 to 15-JUN-00 19:15:00 (EST)
Location: LA PLATA
Property damage: 5K
Reported by: EMERGENCY MANAGER

A boater drowned on the Potomac River after his craft was overturned by high winds and waves.

Thunderstorm Wind in FREDERICK, MARYLAND
From 15-JUN-00 15:20:00 to 15-JUN-00 16:15:00 (EST)
Location: COUNTYWIDE
Property damage: 75K
Reported by: NEWSPAPER

Numerous trees and power lines were downed, a trailer was overturned, a barn roof was removed, and a summer kitchen and a barn were destroyed.