Tropical Storm Isaac is expected to reach hurricane status as early as tonight. The areas in red can expect hurricane conditions within the next 36 hours.
The areas affected include portions of the Florida panhandle, Alabama and Mississippi coastal areas, and portions of Louisiana (including New Orleans).
As the system continues into the Gulf of Mexico, strengthening is expected.
Remember, even without a direct hit, the rain bands and associated thunderstorms can (and often do) cause significant flooding, high winds, and the threat of tornadoes. As always, refer to your local authorities for information to protect your life and property. I can not stress enough that the time to act is now.