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Evolution
and Impacts –
On August 28, while to the east-northeast of the northern Leeward
Islands, a tropical low formed into Tropical Depression Eight. Later that day,
it attained tropical storm status, and was named Hanna. At the time, the
low-level center of circulation was partially exposed on the western edge
of the convection, indicating westerly wind shear. Tracking westward primarily under the steering
current of a large ridge to the north, the convective pattern began to
redevelop late on August 28. On September 1, as Hanna drifted to the
south-southwest, convection increased and the storm began to intensify.
Later that day around 1:30 pm EDT, an Air Force Reconnaissance Aircraft
found winds within Hanna supportive of hurricane strength, and the National
Hurricane Center upgraded Hanna to a hurricane. Early on September 2,
strong wind shear in association with Hurricane Gustav began to affect
Hanna and the storm was downgraded to a tropical storm on September 3.
Early on September 6, 2008, Hanna made landfall near the South
Carolina-North Carolina border. The system became an extratropical
cyclone as it moved into Canada early on September 7 and raced across the
North Atlantic.
In Eastern North Carolina, storm surge was estimated at 2 to 3 feet with
minor beach erosion in Onslow and Carteret counties and along the Outer
Banks. A surge of 4.5 feet along the Pamlico River at Washington resulted
in some flooding of low lying areas in Washington and Belhaven. Storm surge
estimated at 2 to 4 feet occurred along the Neuse River in Craven County.
The inland counties of Pitt, Jones, Washington, Craven, Duplin and
Beaufort all reported minor wind damage with trees and power lines down,
some shingles blown off homes, and $10,000 worth of damage was reported to
two accessory buildings in Washington County. There were sporadic power
outages throughout eastern North Carolina.
Heavy rainfall (Figure 3) during the morning of September 6 across the
southwestern portion of Hyde County produced flooding in the Sladesville area resulting in Sladesville
Credle Road becoming impassible.
While no deaths or injuries were reported in North Carolina, 7 deaths
were reported along the east coast of the United States, mainly rip current
related drownings, due to Hanna.
Figure 3. Rainfall totals along the
track of Hanna (September 4-7, 2008).
POST
TROPICAL CYCLONE REPORT...HURRICANE HANNA
NATIONAL
WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
410 PM
EDT THU SEP 11 2008
NOTE: THE
DATA SHOWN HERE ARE PRELIMINARY....AND SUBJECT TO UPDATES
AND
CORRECTIONS AS APPROPRIATE.
THIS
REPORT INCLUDES EVENTS OCCURRING WHEN WATCHES AND/OR WARNINGS
WERE IN
EFFECT FOR HANNA.
COUNTIES
INCLUDED...CARTERET...ONSLOW...DARE...CRAVEN...DUPLIN...
JONES...MARTIN...GREENE...LENOIR...PAMLICO...HYDE...BEAUFORT...
PITT...WASHINGTON...TYRRELL
A.
LOWEST SEA LEVEL PRESSURE/MAXIMUM SUSTAINED WINDS AND PEAK GUSTS
---------------------------------------------------------------------
METAR
OBSERVATIONS...
NOTE:
ANEMOMETER HEIGHT IS 10 METERS AND WIND AVERAGING IS 2 MINUTES
---------------------------------------------------------------------
LOCATION ID MIN DATE/ MAX DATE/ PEAK DATE/
LAT LON
PRES TIME SUST TIME GUST TIME
DEG
DECIMAL
(MB) (UTC) (KT) (UTC) (KT) (UTC)
---------------------------------------------------------------------
KMRH-BEAUFORT
AIRPORT NC
34.72
76.65 998.9
06/1027 220/036 06/1406 220/048 06/1348
KEWN-NEW
BERN NC
35.09
77.05 995.5
06/1111 180/031 06/1122 180/049 06/1118
KHSE-FRISCO
AIRPORT NC
35.22
75.62 1001.9 06/1204 170/037 06/1144 160/047 06/1056
KPGV-GREENEVILLE
AIRPORT NC
35.63
77.40
I 130/018 06/1043 I
130/027 06/1043 I
KOAJ-
JACKSONVILLE AIRPORT NC
34.83
77.62 993.5
06/1043 170/037 06/1002
I
REMARKS:
NON-METAR
OBSERVATIONS...
NOTE:
ANEMOMETER HEIGHT IN METERS AND WIND AVERAGING PERIOD IN
MINUTES
INDICATED UNDER MAXIMUM SUSTAINED WIND IF KNOWN
---------------------------------------------------------------------
LOCATION ID MIN DATE/ MAX DATE/ PEAK DATE/
LAT LON
PRES TIME SUST TIME GUST TIME
DEG
DECIMAL
(MB) (UTC) (KT) (UTC) (KT) (UTC)
---------------------------------------------------------------------
B.
MARINE OBSERVATIONS...
NOTE:
ANEMOMETER HEIGHT IN METERS AND WIND AVERAGING PERIOD IN
MINUTES
INDICATED UNDER MAXIMUM SUSTAINED WIND IF KNOWN
---------------------------------------------------------------------
LOCATION ID MIN DATE/ MAX DATE/ PEAK DATE/
LAT LON
PRES TIME SUST TIME GUST TIME
DEG
DECIMAL
(MB) (UTC) (KT) (UTC) (KT) (UTC)
---------------------------------------------------------------------
41035 -
ONSLOW BAY, NC
34.47 77.28 996.8 06/0920 140/035 06/0720 190/056 06/1020
41036 -
ONSLOW BAY , NC
34.21 76.95 999.5 06/0850 140/037 06/0750 140/047 06/0750
CLKN7 -
CAPE LOOKOUT , NC
34.62 76.53 1002.0 06/0900 MMM/039 06/0900 MMM/046 06/1250
41025 -
DIAMOND SHOALS , NC
35.00 75.40 1004.8 06/1050 150/035 06/1050 190/049 06/1250
DUCN7 -
DUCK PIER , NC
36.18 75.75 1001.6 06/1212 140/038
REMARKS:
C.
STORM TOTAL RAINFALL FROM 1200 UTC SEP 05 UNTIL 1800 UTC SEP 07
---------------------------------------------------------------------
CITY/TOWN
COUNTY
ID
RAINFALL
LAT
LON
(IN)
DEG
DECIMAL
---------------------------------------------------------------------
BEAUFORT
CARTERET
MRH
1.08
34.72 -76.65
FRISCO
OUTER BANKS DARE
HSE
1.04
35.23 -75.61
CHERRY
POINT MCAS
CRAVEN
NKT
1.30
34.92 -76.88
JACKSONVILLE
ONSLOW
OAJ
1.32
34.76 -77.40
NEW
BERN
CRAVEN
EWN
0.81
35.11 -77.08
NEWPORT
CARTERET
MHX
1.11
34.78 -76.86
KINSTON
LENOIR
KNNN7
1.60
35.27 -77.59
WILLIAMSTON
MARTIN
WLLN7
2.00
35.85 -77.06
REMARKS:
D.
INLAND FLOODING...
---------------------------------------------------------------------
HYDE...HEAVY
RAINFALL DURING THE MORNING OF SEPTEMBER 6TH ACROSS THE
SOUTHWEST
PART OF HYDE COUNTY PRODUCED FLOODING IN THE SLADESVILLE
AREA
RESULTING IN THE SLADESVILLE CREDLE ROAD BECOMING IMPASSABLE.
---------------------------------------------------------------------
E.
MAXIMUM STORM SURGE AND STORM TIDE...
OFFICIAL
TIDE GAUGES NOTED WITH LEADING G
---------------------------------------------------------------------
COUNTY
CITY/TOWN
SURGE TIDE DATE/ BEACH
OR LOCATION (FT) (FT) TIME EROSION
---------------------------------------------------------------------
CARTERET G
BEAUFORT
2.00 3.20 06/0800 MINOR
DARE G
OREGON INLET
2.40 3.40 06/1900 MINOR
BEAUFORT
WASHINGTON
4.50 4.50 06/1200 UNKNOWN
REMARKS:
F.
TORNADOES...
---------------------------------------------------------------------
(DIST)CITY/TOWN
COUNTY
DATE/
EF SCALE
LAT LON
(DEG DECIMAL
TIME(UTC)
(IF KNOWN)
DESCRIPTION
---------------------------------------------------------------------
G.
STORM IMPACTS BY COUNTY...
---------------------------------------------------------------------
COUNTY
DEATHS
INJURIES
EVACUATIONS
DESCRIPTION
---------------------------------------------------------------------
CARTERET
STORM
ESTIMATED AT 2 TO 3 FEET WITH MINOR BEACH EROSION. MINIMAL
DAMAGE
ESTIMATED WITH SPORADIC POWER OUTAGES. SOME TREES AND POWER
LINES
DOWN.
ONSLOW
STORM
SURGE ESTIMATED AT 2 TO 3 FEET WITH MINOR BEACH EROSION.
SPORADIC
POWER OUTAGES WITH A FEW TREES AND POWER LINES DOWN.
DAMAGES
ESTIMATED AT $20,000.
DUPLIN
A FEW
TREES WERE DOWN ACROSS THE COUNTY.
HYDE
SPORADIC
POWER OUTAGES REPORTED ACROSS THE COUNTY. STORM SURGE WAS
ESTIMATED
AT 1 TO 2 FEET WITH MINOR BEACH EROSION.
DARE
SOUND
SIDE SURGE OF 2 FEET RESULTED IN OVERWASH OF HIGHWAY 12 NEAR
RODANTHE.
DAMAGES WERE MINIMAL.
BEAUFORT
STORM
SURGE OF 4.5 FEET ALONG THE PAMLICO RIVER AT WASHINGTON
RESULTED
IN SOME FLOODING OF LOW LYING AREAS IN WASHINGTON AND
BELHAVEN.
SPORADIC POWER OUTAGES WERE REPORTED WITH SOME TREES AND
POWERLINES
DOWN. DAMAGES WERE MINIMAL.
WASHINGTON
MINOR DAMAGE
TO TWO ACCESSORY BUILDINGS WITH DAMAGES ESTIMATED AT
$10,000.
A FEW TREES AND POWERLINES WERE DOWN WITH SPORADIC POWER
OUTAGES.
JONES
A FEW
TREES AND POWERLINES DOWN WITH SPORADIC POWER OUTAGES AND
SHINGLES
BLOWN OFF SOME HOMES. DAMAGES WERE MINMAL.
PITT
A FEW
TREES AND POWERLINES DOWN WITH SPORADIC POWER OUTAGES. ONE
TREE FELL
ON A PICKUP TRUCK WITH DAMAGES ESTIMATED AT $5,000.
CRAVEN
STORM
SURGE ESTIMATED AT 2 TO 4 FEET ALONG THE NEUSE RIVER. A FEW
TREES
AND POWERLINES WERE DOWN WITH SPORADIC POWER OUTAGES.
$$
Sources –
National
Hurricane Center
NASA
Wikipedia
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