A potent storm is currently slamming into California, but residents andvisitors across Southern California and Arizona should especially be concernedabout the storm that looms for Thursday. That storm should be the caboose ofthe recent Pacific storm train and could have disastrous consequences forSouthern California and Arizona.There are two main factors to the Thursday storm that will make it more potentthan its predecessors. The storm will quickly follow on the heels of a storm onWednesday, so Southern California and Arizona may not even notice a breakbetween the two systems.

Thursday's storm will also bring a greater danger of widespread and seriousflooding. Not only will the storm itself unleash substantial rain, but theground will not be able to absorb much of the rain. Previous storms will leavethe ground extremely oversaturated.

A dangerous situation is definitely taking shape across the Southwest. Be sureto follow any evacuation orders issued by officials, as well as keep away fromraging waterways or flooded roads.

Story By AccuWeather.com Senior Meteorologist Kristina Pydynowski