The National Hurricane Center (NHC) issued a stark warning in its 4:00 AM CDT Friday advisory, urging residents along the northern U.S. Gulf Coast to rush emergency preparations to completion as Hurricane Isaias continues to intensify.
Data from Air Force and NOAA Hurricane Hunter aircraft reveal that Isaias's maximum sustained winds have climbed to near 110 mph (175 km/h) with even higher gusts. The storm is currently tracking north-northeast at 15 mph (24 km/h). Forecasters state it is likely to become a major hurricane later this morning as it charts a path toward a late-tonight or early-Saturday landfall.
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A robust network of coastal watches and warnings is currently in effect across several states:
- Hurricane Warning: Active from Ocean Springs, Mississippi, to the Bay/Gulf County Line, Florida, where hurricane-force conditions are expected within 24 hours.
- Storm Surge Warning: Covers the coast from the mouth of the Mississippi River to the Suwannee River, Florida.
- Tropical Storm Warning: Stretches from the Jefferson/Plaquemines Parish Line, Louisiana, to west of Ocean Springs, and extends east of the Bay/Gulf line down to the Aucilla River, Florida.
Life-Threatening Coastal Inundation
The NHC has warned that a dangerous combination of storm surge and rising tides will inundate normally dry coastal boundaries. If peak surge occurs during high tide, water levels could reach the following heights above ground:
- Dauphin Island, AL to Indian Pass, FL: 5 to 7 feet
- Indian Pass, FL to Steinhatchee River, FL: 4 to 6 feet
- Mobile Bay & Mississippi River Mouth: 3 to 5 feet
Large, destructive waves will accompany this surge, primarily to the immediate coast near and to the right of the hurricane's eye.
Deluges and Tornado Risks Ahead
Inland communities are not safe from Isaias's reach. The storm is projected to dump widespread rainfall of 4 to 8 inches across southern Alabama, the Florida Panhandle, and southwest Georgia. Isolated, banded totals could peak at 15 inches, threatening considerable flash, urban, and river flooding.
Furthermore, a tornado risk will develop late Friday afternoon and linger overnight for coastal areas of Alabama, southwest Georgia, and the Florida Panhandle, before shifting further into the Carolinas on Saturday.
Officials strongly advise all individuals within the warning areas to strictly follow emergency instructions and local evacuation orders as weather conditions deteriorate rapidly today.