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Slow-moving Isaac soaks Louisiana, Mississippi

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Parts of the Mississippi coast, like Long Beach, experienced severe flooding. (Source: WDAM/viewer photo) Parts of the Mississippi coast, like Long Beach, experienced severe flooding. (Source: WDAM/viewer photo)
Communities in the western Florida panhandle, Alabama, Mississippi and Louisiana weathered the storm Monday night into Tuesday morning. (Source: WVUE/CNN) Communities in the western Florida panhandle, Alabama, Mississippi and Louisiana weathered the storm Monday night into Tuesday morning. (Source: WVUE/CNN)
The National Hurricane Center is tracking Isaac as it moves through Mississippi and Louisiana; image shows path as of 2 p.m. CT. (Source:NHC) The National Hurricane Center is tracking Isaac as it moves through Mississippi and Louisiana; image shows path as of 2 p.m. CT. (Source:NHC)
Pumps have played a crucial role in preventing floods. (Source: CNN) Pumps have played a crucial role in preventing floods. (Source: CNN)
A wind gust topped 70 mph in Gulfport, MS, according to WLOX. (Source: WLOX) A wind gust topped 70 mph in Gulfport, MS, according to WLOX. (Source: WLOX)

(RNN) -As Hurricane Isaac moves inland dumping inches of rain, the possibility for flooding increases, as well as the concern of tornadoes.

According to the Associated Press, late Wednesday President Barack Obama declared federal emergencies in the areas of Mississippi and Louisiana that were hit hard by Isaac.

Isaac was downgraded to a tropical storm earlier Wednesday, but remains a threat to life and property along the Gulf Coast, according to the National Hurricane Center.

Rainfall amounts may range from 7 to 14 inches, with the possibility of 25 inches, over much of Louisiana and southern and central Mississippi.

Hazards from storm surge and inland flooding are still taking place, as the storm's maximum sustained winds are near 60 mph, a slight weakening from earlier in the day. 

Gulfport, MS, which has received more than 12 inches of rain, experienced flooding from the storm surge especially along low-lying costal areas, along with a possible tornado, according to WLOX.

Mississippi Gov. Phil Bryant said Wednesday that 58 people were rescued by boat in Hancock County.

Louisiana state officials said they will intentionally breach a levee at some point to alleviate flooding in Plaquemines Parish, according to the Associated Press.

There is no estimate when the breach will occur, but it most likely not happen Wednesday due to hazardous weather conditions.

The slow-moving storm caused water to start pouring over the top of the parish levee before daybreak. Louisiana Gov. Bobby Jindal said there was an unconfirmed report of a fatality in a fire in Gretna, LA.

There have been around 150 calls for rescue Wednesday from rising flood waters in Plaquemines Parish, according to CNN. A total of 75 people have been rescued in Braithwaite, while at least 25 more wait on rooftops and in attics.

The parish is part of the New Orleans statistical area and shares a border with Orleans Parish. The overtopped levee stretches for about 18 miles, from Braithwaite to White Ditch. 

New Orleans avoided a direct hit, and the city's flood protection system has been holding up, according to the Army Corps of Engineers.

New Orleans Mayor Mitch Landrieu issued a dusk-to-dawn curfew for the city.

CNN reported more than 8,000 National Guard personnel were at the ready for relief operations, and at least 4,100 people were in shelters. CNN reported more than 673,000 total had lost power across five states.

Additional mandatory evacuations have been ordered. The National Weather Service predicts dangerous storm surges and flood threats in southeastern Louisiana to last through Wednesday night.

The overtopped levee was left out of the federal rebuilding of the levee system, although the parish was in the process of fortifying it before Isaac hit.

A statement from emergency management officials said this will result in significant flooding in that area.

In its 2 p.m. advisory, the National Hurricane Center tracked Isaac creeping northwest at 6 mph, and located 50 miles west-southwest of New Orleans, and 55 miles south-southeast of Baton Rouge, LA. It is expected to continue moving in the same direction through the night.

The hurricane had been hesitant to move ashore but made its second landfall at 2:15 a.m. CT in the southeastern port of Port Fourchon, LA on Wednesday.

The NHC is predicting rainfall totals between 7 to 14 inches for much of Louisiana, southern Mississippi, southern Alabama and the extreme western Florida panhandle. However, totals could reach a maximum of 20 inches in harder hit areas.

The NHC forecasted hurricane wind conditions are expected to spread across southeastern Louisiana into Wednesday morning. The high winds may also cause isolated tornadoes along the central Gulf Coast and lower Mississippi River Valley into Wednesday.

Many of those outages may not be fixed until the storm has completely passed, which may take awhile given Isaac's slow movement.

Isaac's plodding path is a major flooding concern for communities across the Gulf region.  

The NHC predicted water levels could reach 6 to 12 feet above ground in Mississippi and southeastern Louisiana; 3 to 6 feet in Alabama south-central Louisiana; 2 to 4 feet in the Florida panhandle and Apalachee Bay; and up to 3 feet on in the remainder of the Florida west coast.

Storm surges of 11 feet have been recorded in southeastern Louisiana.

In New Orleans, all levees, pumping stations and flood gates are holding as expected. No major flooding has occurred in the areas within the levee systems. The flood-prevention system received an $11 billion upgrade after Hurricane Katrina tore through it in 2005.

CNN reported a barge broke loose in the city due to winds reaching over 60 mph. The barge continued to hit three unoccupied passenger ships in the area. A 47-foot boat sunk in the accident.

The hurricane warning and watch have been discontinued.

A tropical storm warning remains from Cameron, LA to the Mississippi-Alabama border.

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