Message posted by Nimrod on November 14, 2004 at 15:58:54 PST:

What I think you saw - was a condensation cloud associated with the beginings of a shockwave caused by the plane approaching the speed of sound.

This effect is more pronounced on cooler / humid conditons.

Depending on the angle of the sun relative to your point of view - it may appear to "flash"

In Reply to: B1 question posted by buzz on November 14, 2004 at 10:44:15 PST:

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