UPDATE: 11am ET warning from National Hurricane Center (FLORENCE)

BY TEAM DML / SEPTEMBER 12, 2018 /

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FROM THE NATIONAL HURRICANE CENTER, 11am ET update, 9/12/18:

BULLETIN
Hurricane Florence Advisory Number 53…Corrected
NWS National Hurricane Center Miami FL AL062018
1100 AM EDT Wed Sep 12 2018

Corrected second headline

…AIR FORCE HURRICANE HUNTER AIRCRAFT FINDS FLORENCE HAS CHANGED
LITTLE WHILE MOVING TOWARD THE U.S. SOUTHEAST COAST…
…LIFE-THREATENING STORM SURGE AND RAINFALL EXPECTED ACROSS
PORTIONS OF THE CAROLINAS…

SUMMARY OF 1100 AM EDT…1500 UTC…INFORMATION
———————————————–
LOCATION…29.8N 71.3W
ABOUT 485 MI…785 KM SE OF WILMINGTON NORTH CAROLINA
ABOUT 520 MI…840 KM ESE OF MYRTLE BEACH SOUTH CAROLINA
MAXIMUM SUSTAINED WINDS…130 MPH…215 KM/H
PRESENT MOVEMENT…NW OR 305 DEGREES AT 15 MPH…24 KM/H
MINIMUM CENTRAL PRESSURE…943 MB…27.85 INCHES

WATCHES AND WARNINGS
——————–
CHANGES WITH THIS ADVISORY:

None.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT:

A Storm Surge Warning is in effect for…
* South Santee River South Carolina to Duck North Carolina
* Albemarle and Pamlico Sounds, including the Neuse and Pamlico
Rivers

A Storm Surge Watch is in effect for…
* Edisto Beach South Carolina to South Santee River South Carolina
* North of Duck North Carolina to the North Carolina/Virginia border

A Hurricane Warning is in effect for…
* South Santee River South Carolina to Duck North Carolina
* Albemarle and Pamlico Sounds

A Hurricane Watch is in effect for…
* Edisto Beach South Carolina to South Santee River South Carolina

A Tropical Storm Warning is in effect for…
* North of Duck North Carolina to the North Carolina/Virginia border

A Tropical Storm Watch is in effect for…
* North of the North Carolina/Virginia border to Cape Charles Light
Virginia
* Chesapeake Bay south of New Point Comfort

Interests elsewhere in the southeastern and mid-Atlantic states
should monitor the progress of Florence.

A Storm Surge Warning means there is a danger of life-threatening
inundation, from rising water moving inland from the coastline,
during the next 36 hours in the indicated locations. For a
depiction of areas at risk, please see the National Weather
Service Storm Surge Watch/Warning Graphic, available at
hurricanes.gov. This is a life-threatening situation. Persons
located within these areas should take all necessary actions to
protect life and property from rising water and the potential for
other dangerous conditions. Promptly follow evacuation and other
instructions from local officials.

A Storm Surge Watch means there is a possibility of life-
threatening inundation, from rising water moving inland from the
coastline, in the indicated locations during the next 48 hours.

A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area. A warning is typically issued
36 hours before the anticipated first occurrence of tropical-storm-
force winds, conditions that make outside preparations difficult or
dangerous. Preparations to protect life and property should be
rushed to completion.

A Hurricane Watch means that hurricane conditions are possible
within the watch area. A watch is typically issued 48 hours
before the anticipated first occurrence of tropical-storm-force
winds, conditions that make outside preparations difficult or
dangerous.

A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.

A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, generally within 48 hours.

For storm information specific to your area, including possible
inland watches and warnings, please monitor products issued by your
local National Weather Service forecast office.

DISCUSSION AND OUTLOOK
———————-
At 1100 AM EDT (1500 UTC), reports from An Air Force Reserve
reconnaissance aircraft indicate that the center of the eye of
Hurricane Florence was located near latitude 29.8 North, longitude
71.3 West. Florence is now moving toward the northwest near 15 mph
(24 km/h) and this general motion, accompanied by a gradual
decrease in forward speed, is expected to through Saturday. On the
forecast track, the center of Florence will move over the
southwestern Atlantic Ocean between Bermuda and the Bahamas today,
and approach the coast of North Carolina or South Carolina in the
hurricane warning area on Thursday and Friday and move slowly near
the coastline through Saturday.

The reconnaissance aircraft found that maximum sustained winds
remain near 130 mph (215 km/h) with higher gusts. Florence is a
category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale.
Some strengthening is forecast through tonight. While some
weakening is expected to begin by late Thursday, Florence is still
forecast to be an extremely dangerous major hurricane when it nears
the U.S. coast on Friday.

Hurricane-force winds extend outward up to 70 miles (110 km) from
the center and tropical-storm-force winds extend outward up to 175
miles (280 km).

The estimated minimum central pressure is 943 mb (27.85 inches).

HAZARDS AFFECTING LAND
———————-
STORM SURGE: The combination of a dangerous storm surge and the
tide will cause normally dry areas near the coast to be flooded by
rising waters moving inland from the shoreline. The water has the
potential to reach the following heights above ground if peak surge
occurs at the time of high tide…

Cape Fear NC to Cape Lookout NC, including the Neuse, Pamlico,
Pungo, and Bay Rivers…9-13 ft
North Myrtle Beach SC to Cape Fear NC…6-9 ft
Cape Lookout NC to Ocracoke Inlet NC…6-9 ft
South Santee River SC to North Myrtle Beach SC…4-6 ft
Ocracoke Inlet NC to Salvo NC…4-6 ft
Salvo NC to North Carolina/Virginia Border…2-4 ft
Edisto Beach SC to South Santee River SC…2-4 ft

The deepest water will occur along the immediate coast in areas of
onshore winds, where the surge will be accompanied by large and
destructive waves. Surge-related flooding depends on the relative
timing of the surge and the tidal cycle, and can vary greatly over
short distances. For information specific to your area, please see
products issued by your local National Weather Service forecast
office.

RAINFALL: Florence is expected to produce heavy and excessive
rainfall in the following areas…

Coastal North Carolina…20 to 30 inches, isolated 40 inches. This
rainfall would produce catastrophic flash flooding and significant
river flooding.

South Carolina, western and northern North Carolina…5 to 10
inches, isolated 20 inches.
Elsewhere in the Appalachians and Mid-Atlantic states…3 to 6
inches, isolated 12 inches.

WIND: Hurricane conditions are expected to reach the coast within
the hurricane warning area late Thursday or Friday. Winds are
expected to first reach tropical storm strength on Thursday, making
outside preparations difficult or dangerous. Preparations to
protect life and property should be rushed to completion.

TORNADOES: A few tornadoes are possible in eastern North Carolina
beginning late Thursday morning.

SURF: Swells generated by Florence are affecting Bermuda and
portions of the U.S. East Coast. These swells are likely to cause
life-threatening surf and rip current conditions. Please consult
products from your local weather office.

NEXT ADVISORY
————-
Next intermediate advisory at 200 PM EDT.
Next complete advisory at 500 PM EDT.

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