[meteorite-list] Fireball question / sonic boom

[wahlperry at aol.com]

Hi List,

It seems like there have been many fireball sightings in the past few 
months but no material being found on the ground, as in the recent 
Oklahoma event. I was wondering if the absence of a sonic boom has 
anything to do with it.
Does a sonic boom or explosion have to be present for a major meteorite 
producing event? Could there still be a few meteorites on the ground 
with no sonic boom? With Buzzard Coulee, Mifflin, Ash Creek these 
events all produced meteorites and sonic booms were heard by the 
locals. Does anyone know if there were sonic booms associated with the 
Park Forest and Whetstone events?

Thanks,
Sonny