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HURRICANE MATTHEW ADVISORY NUMBER 41
NWS NATIONAL HURRICANE CENTER MIAMI FL AL142016
500 AM EDT SAT OCT 08 2016
...NORTHERN EYEWALL OF MATTHEW LASHING HILTON HEAD ISLAND AND
PRITCHARDS ISLAND SOUTH CAROLINA WITH HURRICANE-FORCE WINDS...
...STORM SURGE FLOODING OCCURRING IN GEORGIA AND SOUTH CAROLINA...
SUMMARY OF 500 AM EDT...0900 UTC...INFORMATION
ABOUT 20 MI...30 KM SE OF HILTON HEAD ISLAND SOUTH CAROLINA
ABOUT 60 MI...100 KM SSW OF CHARLESTON SOUTH CAROLINA
MAXIMUM SUSTAINED WINDS...105 MPH...165 KM/H
PRESENT MOVEMENT...NNE OR 15 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...955 MB...28.20 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
All tropical cyclone warnings have been discontinued south of
Altamaha Sound, Georgia.
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Warning is in effect for...
* North of Altamaha Sound to Surf City
A Hurricane Watch is in effect for...
* North of Surf City to Cape Lookout
A Tropical Storm Warning is in effect for...
* North of Surf City to Duck
* Pamlico and Albemarle Sounds
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 48-HOUR OUTLOOK
At 500 AM EDT (0900 UTC), the center of Hurricane Matthew was
located by NOAA Doppler weather radars, and Air Force Reserve and
NOAA Hurricane Hunter aircraft, near latitude 32.0 North, longitude
80.5 West. Matthew is moving toward the north-northeast near 12 mph
(19 km/h), and this general motion is expected to continue this
morning. A turn toward the northeast is expected by this afternoon.
On the forecast track, the center of Matthew will move near or over
the coast of South Carolina this morning, and be near the coast of
southern North Carolina by tonight.
Reports from the reconnaissance aircraft indicate that maximum
sustained winds remain near 105 mph (165 km/h) with higher gusts.
Although weakening is forecast during the next 48 hours, Matthew is
expected to remain a hurricane while the center is near the coasts
of South Carolina and North Carolina.
Hurricane-force winds extend outward up to 45 miles (75 km) from the
center, and tropical-storm-force winds extend outward up to 185
miles (295 km). Hurricane-force wind gusts are now occurring along
the coasts of Georgia and South Carolina from Tybee Island, Georgia,
to Pritchards Island, South Carolina.
The minimum central pressure recently reported by Air Force Reserve
and NOAA reconnaissance aircraft was 955 mb (28.20 inches).
HAZARDS AFFECTING LAND
WIND: Hurricane and tropical storm conditions are expected to
continue over the warning area in Georgia and South Carolina
this morning, and spread northward elsewhere within the warning area
Residents in high-rise buildings should be aware that the winds at
the top of a 30-story building will be, on average, about one
Saffir-Simpson category higher than the winds near the surface.
Hurricane conditions are possible within the Hurricane Watch and
Tropical Storm Warning area in North Carolina by tonight or Sunday
morning, with tropical storm conditions expected later this morning.
STORM SURGE: The combination of a dangerous storm surge, the tide,
and large and destructive waves will cause normally dry areas near
the coast to be flooded by rising waters moving inland from the
shoreline. The water could reach the following heights above ground
if the peak surge occurs at the time of high tide...
Altamaha Sound, GA, to Edisto Beach, SC...6 to 9 ft
Edisto Beach, SC to Cape Fear, NC...5 to 7 ft
Cape Fear to Duck, NC, including portions of the Pamlico and
Albemarle Sounds...2 to 4 ft
The deepest water will occur along the immediate coast in areas of
onshore winds. Surge-related flooding depends on the relative
timing of the surge and the tidal cycle, and can vary greatly over
short distances. Large waves generated by Matthew will cause water
rises to occur well in advance of and well away from the track of
the center. For information specific to your area, please see
products issued by your local National Weather Service forecast
There is a danger of life-threatening inundation during the next 36
hours along the coast from Altamaha Sound, Georgia, to Cape
Fear, North Carolina. There is the possibility of life-threatening
inundation during the next 48 hours from north of Cape Fear to Duck,
North Carolina, including portions of Pamlico and Albemarle Sounds.
For a depiction of areas at risk, please see the Prototype National
Weather Service Storm Surge Watch/Warning Graphic. For information
specific to your area, please see products issued by your local
National Weather Service forecast office.
The Prototype Storm Surge Watch/Warning Graphic is a depiction of
areas that would qualify for inclusion under a storm surge watch or
warning currently under development by the National Weather Service
and planned for operational use in 2017. The Prototype Graphic is
available at hurricanes.gov.
RAINFALL: Matthew is expected to produce total rain accumulations of
8 to 12 inches near and east of Interstate 95 in South Carolina and
North Carolina, with possible isolated maximum amounts of 15 inches.
Matthew is expected to produce 2 to 6 inches of rain over central
South Carolina, western North Carolina, and southeastern Virginia.
Additional rain accumulations of 1 to 2 inches are expected over
eastern Georgia. In all of these areas rainfall may result in
life-threatening flooding and flash flooding.
TORNADOES: An isolated tornado or two will be possible today along
the coast of North Carolina and northern South Carolina.
SURF: Swells generated by Matthew will continue to affect portions
of the east coast of Florida during the next few days, and will
spread northward along the southeast U.S. coast through the weekend.
These swells will likely cause life-threatening surf and rip current
conditions. Please consult products from your local weather office.
Next intermediate advisory at 800 AM EDT.
Next complete advisory at 1100 AM EDT.