A strong cold front moved across the region around midday on the 17th.  Ahead of the front, heavy rain fell from showers and thunderstorms.   In St. Mary's County, 2.28 inches fell in Morganza and 2.22 inches fell in Oraville.  In Charles County, 2.50 inches fell in Waldorf and 2.26 inches was recorded in Bryan's Road.  In Calvert County, between 2.5 and 3.5 inches was recorded across the northwest portion of the county.  In Prince George's County 2.55 inches fell at Andrews AFB, 1.71 inches fell in South Bowie, and 1.55 inches fell in Oxon Hill. In Anne Arundel County, 2.50 inches fell in Annapolis, 3.30 inches fell at Park West, 2.20 inches fell in Jessup, 1.87 inches fell in Rivera Beach, and 1.69 inches fell at Jug Bay Wetlands.  In Howard County, 3.81 inches fell in Ora, 2.34 inches fell in Columbia, and 2.26 inches fell in Laurel.  Flooding was reported along Hammond's Branch.In Baltimore County, 2.32 inches fell at Parkton, 2.20 inches fell at Baptist Home, 2.15 inches fell in Owings Mills, and 1.60 inches fell in Freeland.  Spotters reported that both Gwynns Falls and Jones Falls overflowed their banks temporarily.  Sections of Route 140 (Reisterstown Road) and Owings Mills Boulevard were closed by high water.  In Carroll County, 1.81 inches fell in Westminster.  In Frederick County, 1.60 inches fell in Thurmont.  Because of the heavy downpours, the Monocacy River near Frederick rose above its flood stage of 15 feet between 6 PM on the 17th and 6 AM on the 18th.  The river crested at 15.89 feet at 1:30 AM on the 18th.  Water began to inundate Lillypond Fish Hatchery and the sewage treatment plant.  Backwater flooding occurred along Carroll Creek which sent water onto Gashouse Pike.  Israel Creek also overflowed onto Stauffer Road.   Behind the front, northwest winds increased to 30 to 45 MPH.  Measured wind gusts included 51 MPH at Andrews AFB, 48 MPH at Martin State Airport just east of Baltimore, 46 MPH at Hagerstown, 45 MPH at Damascus in Montgomery County, 44 MPH at Oraville in St. Mary's County, 43 MPH at Bryan's Road and St. Indigoes in Charles County and at Baltimore/Washington International Airport, 41 MPH at Hollywood and Ridge in St. Mary's County, 40 MPH at Frederick and Cumberland, and 39 MPH at Westminster.

Strong Wind in ALLEGANY, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in WASHINGTON, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in FREDERICK, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in CARROLL, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in NORTHERN BALTIMORE, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in SOUTHERN BALTIMORE, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Heavy Rain in BALTIMORE CITY (C), MARYLAND
From 16-DEC-00 21:00:00 to 17-DEC-00 03:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Heavy Rain in HOWARD, MARYLAND
From 16-DEC-00 21:00:00 to 17-DEC-00 03:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Heavy Rain in BALTIMORE, MARYLAND
From 16-DEC-00 21:00:00 to 17-DEC-00 03:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Flood in FREDERICK, MARYLAND
From 17-DEC-00 06:15:00 to 18-DEC-00 06:00:00 (EST)
Reported by: OFFICIAL NWS OBS.

The Monocacy River near Frederick crested at 15.89 feet.

Heavy Rain in FREDERICK, MARYLAND
From 16-DEC-00 21:00:00 to 17-DEC-00 03:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Heavy Rain in CARROLL, MARYLAND
From 16-DEC-00 21:00:00 to 17-DEC-00 03:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Heavy Rain in ANNE ARUNDEL, MARYLAND
From 16-DEC-00 21:00:00 to 17-DEC-00 03:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Heavy Rain in PRINCE GEORGE'S, MARYLAND
From 16-DEC-00 21:00:00 to 17-DEC-00 03:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Heavy Rain in CHARLES, MARYLAND
From 16-DEC-00 21:00:00 to 17-DEC-00 03:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Heavy Rain in ST. MARY'S, MARYLAND
From 16-DEC-00 21:00:00 to 17-DEC-00 03:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Heavy Rain in CARROLL, MARYLAND
From 16-DEC-00 21:00:00 to 17-DEC-00 03:00:00 (EST)
Location: COUNTYWIDE
Reported by: TRAINED SPOTTER

Strong Wind in MONTGOMERY, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in HOWARD, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in HARFORD, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in ANNE ARUNDEL, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in PRINCE GEORGES, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in CALVERT, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in CHARLES, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC

Strong Wind in ST. MARY'S, MARYLAND
From 17-DEC-00 10:00:00 to 17-DEC-00 19:00:00 (EST)
Reported by: AWOS,ASOS,MESONET,ETC