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National UFO Reporting Center
Sighting Report
Occurred : 12/19/2001 10:00 (Entered as : 12/19/01 10:00)
Reported: 1/4/2002 12:02:58 PM 12:02
Posted: 3/21/2003
Location: Glen Dale, MD
Shape: Unknown
Duration:30 minutes
Strange Cloud Formation

On the date of 19 December, 2001 i witnessed a large convection trail approx 20miles accross in a large ,and almost complete circle; but this cloud formation was well below the normal cieling for that type of convection trail, or cloud type.

also saw about 5 to 10 area's where there were small down drafts.

((NUFORC Note: We wonder whether the source, in citing "convection trails," might be describing a typical condensation trail ("contrail") that appears behind high-altitude aircraft. That is a guess. PD))