The Category 1 Hurricane Isaac hit New Orleans exactly seven years after New Orleans was hit by Hurricane Katrina on August 29, 2005.
So far the new barriers built to protect the city after the 2005 Katrina disaster has not been breached.
Anyway a levee on the outskirts of New Orleans has been breached on Wednesday.
Emergency management officials in low-lying Plaquemines Parish reported the over topping of an 8-foot (2.4-meter) high levee between the Braithwaite and White Ditch districts southeast of New Orleans.
There are reports of people on their roofs and attics and 12 to 14 foot of water in their homes.
The greatest concern is an expected storm surge of between 6 and 12 feet off the Louisiana and Mississippi coasts, 4 to 8 feet along the Alabama coast and 2 to 4 feet on the Florida Panhandle.
Storm surge is when hurricane winds raise sea levels off the coast, causing flooding on land.
Farther south, water was pushed over a rural levee and flooded some homes.
Beach front roads were under water, and more than a half-million people had lost power in Louisiana.
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After hitting Florida Keys with strong winds and rain on Sunday, Tropical Storm Isaac is now moving towards New Orleans.
It was reported that Tropical Storm Isaac had killed eight people in Haiti including three children and three people were missing in the Dominican Republic.
Isaac is forecast to become a hurricane by either late Monday or Tuesday and then strengthen to a Category 2 Hurricane.
A hurricane warning was issued for the Gulf Coast from Louisiana to the Florida Panhandle, including New Orleans.
The U.S. National Hurricane Center (NHC) said in an advisory that it might reach New Orleans and the the Gulf Coast on or near the seventh anniversary of Hurricane Katrina.
I was in Chicago when Hurricane Katrina lashed New Orleans on August 29, 2005 but I cannot really remember the details because I was only 2 years old at that time.
Hurricane Katrina killed more than 1,800 people and causing billions of dollars of damage to the Gulf Coast.
Tropical Storm Isaac hit the Caribbean and it strengthened on Friday as its lashing rains took aim at Haiti.
It is not expected to become a hurricane until it reach the Gulf of Mexico early next week.
Forecasters said Isaac would hit Cuba and the southern tip of Florida before making landfall anywhere from the Florida Panhandle in the northwestern part of the state to Alabama and as far west as New Orleans.