http://gom.rigzone.com/rita.asp Most of the rigs in Rita's path experienced cat 4 winds. The majority of rigs in the GOM experienced hurricane force winds. The storm was originally headed for south of Houston where many large refineries are located. I guess traders believed this would decrease demand and crude fell significantly. However, it looks like the refineries where spared but the rigs may have had more damage than expected. I think the price of crude will rise significantly on Monday as Friday's close might have been over sold and wrong assumptions about the track of Rita were made.