Panic. Now.
Just make sure you are prepared to ride it out. All the usual advice and recommendations apply. It could be nothing or it could be epic...nothing lost by being ready, just in case. In particular, be sure your car(s) have full tanks, that you have water and non-perishables, battery-powered lighting and radios or TVs (and lots of extra, fresh batteries). If you're in an area prone to flooding or extended power outages, do what you can to prepare/protect your property and seriously consider relocating to safer accommodations before the storm arrives. And, for goodness sake, don't stock your fridge and freezer...especially if the power is notorious for going out and you don't have a generator that can keep it running for a week or 2. Nothing stupider than people without power whining to reporters about how the hundreds of dollars of refrigerated/frozen goods they bought before the storm had to all be thrown out because there's no power.
