000
WTNT34 KNHC 081456
TCPAT4
BULLETIN
HURRICANE MATTHEW ADVISORY NUMBER 42
NWS NATIONAL HURRICANE CENTER MIAMI FL AL142016
1100 AM EDT SAT OCT 08 2016
...MATTHEW MAKES LANDFALL SOUTHEAST OF MCCLELLANVILLE SOUTH
CAROLINA...
...SERIOUS INLAND FLOODING EVENT UNFOLDING...
SUMMARY OF 1100 AM EDT...1500 UTC...INFORMATION
-----------------------------------------------
LOCATION...33.0N 79.4W
ABOUT 55 MI...90 KM SSW OF MYRTLE BEACH SOUTH CAROLINA
ABOUT 100 MI...165 KM SW OF CAPE FEAR NORTH CAROLINA
MAXIMUM SUSTAINED WINDS...75 MPH...120 KM/H
PRESENT MOVEMENT...NE OR 55 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...967 MB...28.56 INCHES
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
None.
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 1100 AM EDT (1500 UTC), the center of Hurricane Matthew was
located near latitude 33.0 North, longitude 79.4 West. Matthew is
moving toward the northeast near 12 mph (19 km/h), and this motion
is expected to continue today. On the forecast track, the center of
Matthew will continue to move near or over the coast of South
Carolina today, and be near the coast of southern North Carolina by
tonight.
Maximum sustained winds are near 75 mph (120 km/h) with higher
gusts. Although weakening is forecast during the next 48 hours,
Matthew is expected to remain near hurricane strength while the
center is near the coasts of South Carolina and North Carolina.
Hurricane-force winds extend outward up to 25 miles (35 km) from the
center and tropical-storm-force winds extend outward up to 185 miles
(295 km). Sustained winds of 53 mph (85 km/h) with a gust to 69 mph
(111 km/h) has been observed at a private weather station near
Winyah Bay, South Carolina, within the past hour. A wind gust to 58
mph (93 km/h) was recently reported at Charleston, South Carolina.
Strong wind gusts are also occurring well inland in North and South
Carolina. Laurinberg, North Carolina, recently reported a wind gust
of 55 mph (89 km/h).
The minimum central pressure reported by an Air Force plane was 967
mb (28.56 inches).
HAZARDS AFFECTING LAND
----------------------
WIND: Hurricane and tropical storm conditions are expected to
continue over the warning area in Georgia and South Carolina
this afternoon, and spread northward elsewhere within the warning
area through tonight.
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 today.
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...
Charleston, 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
Along the Georgia and South Carolina coasts southwest of Matthew's
center, inundation caused by Matthew's storm surge will slowly
recede today.
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
office.
There is a danger of life-threatening inundation during the next 36
hours along the coast from Altamaha Sound, Georgia, to Bogue Inlet,
North Carolina as well as from Cape Lookout to Salvo, North Carolina
including portions of the Pamlico Sound. There is the possibility
of life-threatening inundation during the next 48 hours from Bogue
Inlet to Cape Lookout, North Carolina and from Salvo to Duck, North
Carolina including portions of the Albemarle Sound. 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.
In all of these areas rainfall may result in life-threatening
flooding and flash flooding.
TORNADOES: A couple of tornadoes are possible through early
tonight along the coast of North 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 ADVISORY
-------------
Next intermediate advisory at 200 PM EDT.
Next complete advisory at 500 PM EDT.
$$
Forecaster Avila
http://www.nhc.noaa.gov/text/refresh/MIATCPAT4+shtml/081456.shtml
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000
WTNT44 KNHC 081500
TCDAT4
HURRICANE MATTHEW DISCUSSION NUMBER 42
NWS NATIONAL HURRICANE CENTER MIAMI FL AL142016
1100 AM EDT SAT OCT 08 2016
Aircraft reconnaissance and land-based radar data indicate that the
center of circulation has crossed the coast of South Carolina near
the Cape Romain National Wildlife Refuge.
The cloud pattern associated with Matthew is beginning to acquire
some extratropical characteristics. The wind field is expanding, and
the area of heavy rains is now northwest of the center. Data from
NOAA and Air Force reconnaissance aircraft around 1200 UTC indicated
that the surface winds have decreased to around 65 kt. (Very recent
SFMR winds of 78 kt were taken over shallow water where the
instrument is affected by shoaling and provides unreliable output).
Most of the global models, primarily the GFS and the UKMET, forecast
that Matthew will become entangled with a cold front, and the new
NHC forecast calls for Matthew to become absorbed within this
frontal system within the next couple of days. During the next 12
to 24 hours, while the Matthew is hugging the US coast and taking on
a more extratropical structure, the tropical-storm-force winds are
expected to expand and strengthen in the western semicircle and
continue to affect portions of the coast within the warning area.
Matthew is already embedded in the mid-latitude westerly flow and is
moving toward the northeast or 050 degrees at 10 kt. The steering
pattern is forecast to persist for the next day or two, and on this
basis the NHC forecast moves the cyclone eastward until it becomes
absorbed. Previous NHC official forecasts followed the EMCWF in
keeping the cyclone a distinct entity longer and looping it
southward, but even if this the case the system will likely be only
a broad area of low pressure.
Due to the degradation of Matthew's radar signature, the hourly
Tropical Cyclone Updates will not longer be issued.
KEY MESSAGES:
1. As Matthew's structure changes, the system's strongest winds
will shift to the back side of the circulation. These winds will
persist over land even after the center begins to move away from the
coastline, and has also increased the threat of storm surge in
portions of the North Carolina Outer Banks. Please see the
Prototype Storm Surge Watch/Warning Graphic for a depiction of the
areas at risk.
FORECAST POSITIONS AND MAX WINDS
INIT 08/1500Z 33.0N 79.4W 65 KT 75 MPH
12H 09/0000Z 33.6N 78.0W 60 KT 70 MPH
24H 09/1200Z 34.0N 75.5W 60 KT 70 MPH
36H 10/0000Z 34.0N 73.0W 50 KT 60 MPH...POST-TROP/EXTRATROP
48H 10/1200Z 33.0N 72.0W 40 KT 45 MPH...POST-TROP/EXTRATROP
72H 11/1200Z...DISSIPATED
$$
Forecaster Avila
http://www.nhc.noaa.gov/text/refresh/MIATCDAT4+shtml/081500.shtml?