1230PM ET Hurricane Helene Update
From the GeoCollaborate StormCenter Communications SISE Support Center this is the 1230pm ET update on Hurricane Helene. This video is provided to support the movement of fleet utility vehicles and sharing of trusted information across public and private sectors to speed situational awareness, response and recovery.
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 this evening. Preparations to protect life and
property should be rushed to completion. Damaging and
life-threatening hurricane-force winds, especially in gusts, will
penetrate well inland over portions of northern Florida and southern
Georgia later today and tonight 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 numerous significant 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 significant river flooding and isolated major river
flooding are likely.
FORECAST POSITIONS AND MAX WINDS
INIT 26/1500Z 25.5N 85.5W 90 KT 105 MPH
12H 27/0000Z 28.8N 84.3W 105 KT 120 MPH
24H 27/1200Z 33.9N 84.5W 55 KT 65 MPH...INLAND
36H 28/0000Z 36.4N 86.6W 30 KT 35 MPH...POST-TROP/EXTRATROP
48H 28/1200Z 36.5N 87.5W 25 KT 30 MPH...POST-TROP/EXTRATROP
60H 29/0000Z 36.3N 87.6W 20 KT 25 MPH...POST-TROP/EXTRATROP
72H 29/1200Z 36.2N 87.2W 20 KT 25 MPH...POST-TROP/EXTRATROP
96H 30/1200Z...DISSIPATED
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