Couple See Cylindrical Shaped "Blue Lighting" Assume Shape of Ball & Explode

Witness Selected This Shape From a UFO Shape Chart

Drawing & Motion of Object as Provided by Witness

Location of Sighting Between St. Petersburg & Sarasota, FL

 Date of Sighting: December 19, 2005
Time of Sighting: 6:45 PM EST
Duration of Sighting: 20 to 25 Seconds
Date Reported: December 20, 2005
Location of Sighting: Between St. Petersburg, Florida & Sarasota, Florida on I-75 Skyway Bridge
Latitude: 27.567 Degrees N
Longitude: 82.5 Degrees W
Number of Witnesses: Two
Number of Witnesses Interviewed: One
Weather: Overcast Skies. Cloud base 4,900 feet. Visibility 9 Miles. Wind from the Southwest at 15 knots.

Description (In Witness's Own Words): My husband and I were driving just past the Skyway Bridge that connects St. Petersburg and Sarasota, Florida on the I-75 South when in the distant sky, perhaps a mile or two ahead, we saw what appeared to be cylindrical shaped blue lightning which fell into a ball shape and seemed to explode on the horizon as if a bomb. The bluish-green light was intense in the center like a flashbulb and it was surrounded by a lighter shade of this color in a half circle formation perhaps a mile or more in diameter.

Investigator's Notes: This sighting is most unusual in that it does not fit any conventional phenomena.  It was cloudy at the time of the sighting, but no thunderstorms were in the area.  Given current information this sighting cannot be identified.