UPDATE: (KYTX) - Rain is soaking Louisiana, huge waves are crashing into Alabama's beaches and flood waters are rising in Mississippi.
Isaac has come ashore and is expected to stick around a while.
Isaac is slowly churning over the gulf coast and could drop up to a foot and a half of rain. The storm surge may reach 12 feet.
Flooding is the biggest concern.
Tomorrow is the seventh anniversary of Hurricane Katrina, when flood waters in New Orleans broke through the levees. A new $14 billion system of levees and walls now surrounds the city. Tonight that system is being put to the test.
Engineers say the new levees can handle a storm much stronger than Isaac. So for now there is not a mandatory evacuation in New Orleans.
Most people are staying and are safely indoors.
But this is still the big easy and some plan to party through the storm.
Thousands of people in low lying areas outside new Orleans were told to evacuate.
Isaac plowed through the Caribbean - causing destruction from Haiti to Florida.
It's now a more powerful storm - and is expected to slowly grind through the Gulf states for the next couple of days.
LOUISIANA (CNN) - As of 7:05 p.m., Isaac has made landfall in southeastern Louisiana, the National Hurricane Center said.