Update 2011-07-22: Due to strong vertical shear Dora has reduced to category 2, continues on its predicted path.
Hurricane Dora in the Eastern Pacific gains strength to Saffir-Simpson Category 4 and is expected to begin to swipe coastal Baja California today. It remains far enough offshore to mostly be a threat at surf levels. Dora is expected to begin to decline on Friday as it enters over cooler water in its northwesterly journey.
See Atlantic and Eastern Pacific Hurricane Activity for more details.
[ What is the Saffir-Simpson Scale of hurricane categories?]