During Hurricane Season (June 1st-November 30th) unplanned trips can happen in a matter of days. Here are a couple good resources for the people along the coast.
1) Prepare - the government has a nice website, ready.gov with lots of good preparation tips
2) Monitor - a great website for being informed or historical, a future servere weather condition include, National Hurricane Center, Flhurricane, and my personal favorite Stormpulse
Stormpulse's interactive website
3) Act - If you decide to "Hunker Down" or Leave, the earlier you act the better. You will avoid traffic, shortages of supplies, and more importantly the STORM!!