Max storm surge 15 to 20 feet!!
KEY MESSAGES:
1. A catastrophic and deadly storm surge is likely along portions
of the Florida Big Bend coast, where inundation could reach as high
as 20 feet above ground level, along with destructive waves. There
is also a danger of life-threatening storm surge along the remainder
of the west coast of the Florida Peninsula. Residents in those
areas should follow advice given by local officials and evacuate if
told to do so.
2. Potentially catastrophic hurricane-force winds are expected
within the eyewall of Helene when it makes landfall in the Florida
Big Bend region late Thursday. Preparations to protect life and
property should be completed by early Thursday before tropical
storm conditions arrive. Damaging and life-threatening
hurricane-force winds, especially in gusts, will penetrate well
inland over portions of northern Florida and southern Georgia late
Thursday and Thursday night where Hurricane Warnings are in effect.
Strong wind gusts are also likely farther north across portions of
northern Georgia and the Carolinas, particularly over the higher
terrain of the southern Appalachians.
3. Catastrophic and life-threatening flash and urban flooding,
including landslides, is expected across portions of the southern
Appalachians through Friday. Considerable to locally catastrophic
flash and urban flooding is likely for northwestern and northern
Florida and the Southeast through Friday. Widespread minor to
moderate river flooding is likely, and isolated major river flooding
is possible.
4. Hurricane and tropical storm conditions are expected over
northeastern portions of the Yucatan Peninsula of Mexico this
evening where Tropical Storm and Hurricane Warnings are in effect.
Tropical storm conditions are occurring over portions of western
Cuba within the Tropical Storm Warning area, and hurricane
conditions are possible this evening within the Hurricane Watch
area. Helene will bring heavy rain to portions of the western
Caribbean with potentially significant flooding across western Cuba
and the northeastern Yucatan Peninsula into early Thursday.
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