Isaac: Hurricane Warnings for Gulf Coast

(Weather.com) Hurricane warnings have been issued for portions of the northern Gulf Coast as Tropical Storm Isaac continues its west-northwestward march into the Gulf of Mexico.

Isaac will continue to affect southern Florida with heavy rain, gusty winds and a tornado threat as it moves through the Florida Keys and into the Gulf Sunday evening. Isaac poses a potential serious threat to portions of the northern Gulf Coast Tuesday into Wednesday. All interests from Louisiana to Mississippi, Alabama and the Florida Panhandle should watch the progress of Isaac closely and begin to make preparations. Even areas as far west as extreme southeast Texas should continue to monitor Isaac’s progress in case a farther west track materializes.

You can find a detailed look at the potential U.S. threats by clicking on this link and you can ensure you know which friends may be in harms way through our My Friends Weather tool.

Hurricane warnings have been issued from just east of Morgan City, La. to Destin, Fla. This includes New Orleans, Biloxi, Gulf Shores, Pensacola Beach, and the Destin/Ft. Walton Beach area. Hurricane watches are now posted from east of Destin to Indian Pass, Fla.

In addition, a number of tropical storm warnings are in effect. For detailed maps of current watches and warnings, scroll down on this page.

(MORE: Live updates and analysis on Isaac)
Background
Projected Path Tropical Storm Isaac
Projected Path

Interactive Projected Path

According to the National Hurricane Center, if peak storm surge occurs at high tide, peak water levels above ground could reach the following depths as Isaac moves by:

- Northern Gulf Coast within the hurricane warning area: 6-12 feet

- Remainder of Florida Panhandle and Apalachee Bay: 4-7 feet

- Fla. west coast, south of Apalachee Bay (incl. Tampa Bay): 2-4 feet

- Southeast Fla. coast, Fla. Keys: 1-3 feet

- Central, western Cuba: 1-3 feet

- Northwestern Bahamas: 1-3 feet

Even as Isaac’s center of circulation moves by, locally heavy rainbands can be expected. Total rainfall of up to 10 inches is possible across the Florida Keys and Central and South Florida. Later, as Isaac approaches the northern Gulf Coast, 5 to 10 inches of rain will eventually fall in some areas with the potential for a foot or more.

Hurricane threat index, current information, satellite imagery, watches/warnings and computer model track graphics are below.

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