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Tropical Storm Hanna makes landfall on the Carolina coast
09-06-2008, 03:55 PM
Post: #571
Tropical Storm Hanna makes landfall on the Carolina coast
500 PM EDT SAT SEP 06 2008

AT 5 PM EDT...2100 UTC...THE TROPICAL STORM WARNING IS DISCONTINUED
SOUTH OF THE NORTH CAROLINA/VIRGINIA BORDER. A TROPICAL STORM
WARNING IS NOW IN EFFECT FROM NORTH OF THE NORTH CAROLINA/VIRGINIA
BORDER TO MERRIMACK RIVER MASSACHUSETTS...INCLUDING PAMLICO AND
ALBEMARLE SOUNDS...ALL OF CHESAPEAKE BAY...THE TIDAL POTOMAC...
WASHINGTON D.C...DELAWARE BAY...NEW YORK HARBOR...LONG ISLAND
SOUND...BLOCK ISLAND...MARTHA'S VINEYARD AND NANTUCKET. A TROPICAL
STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE EXPECTED
WITHIN THE WARNING AREA WITHIN THE NEXT 24 HOURS.

FOR STORM INFORMATION SPECIFIC TO YOUR AREA...INCLUDING POSSIBLE
INLAND WATCHES AND WARNINGS...PLEASE MONITOR PRODUCTS ISSUED
BY YOUR LOCAL WEATHER OFFICE.

AT 500 PM EDT...2100Z...THE CENTER OF TROPICAL STORM HANNA WAS
LOCATED NEAR LATITUDE 38.5 NORTH...LONGITUDE 75.8 WEST OR JUST EAST
OF CAMBRIDGE MARYLAND. THIS POSITION IS ALSO ABOUT 40 MILES...
65 KM...WEST-NORTHWEST OF OCEAN CITY MARYLAND AND ABOUT 100 MILES...
155 KM...SOUTHWEST OF ATLANTIC CITY NEW JERSEY.

HANNA IS MOVING TOWARD THE NORTHEAST NEAR 28 MPH...44 KM/HR. THIS
GENERAL MOTION IS EXPECTED TO CONTINUE WITH AN INCREASE IN FORWARD
SPEED DURING THE NEXT COUPLE OF DAYS. ON THE FORECAST TRACK...THE
CENTER OF HANNA WILL CROSS THE EASTERN MID-ATLANTIC STATES THIS
EVENING...AND MOVE NEAR OR OVER SOUTHERN NEW ENGLAND SUNDAY
MORNING. THE CENTER IS FORECAST TO PASS NEAR OR OVER THE CANADIAN
MARITIMES SUNDAY AFTERNOON.

MAXIMUM SUSTAINED WINDS ARE NEAR 50 MPH...85 KM/HR...WITH HIGHER
GUSTS. LITTLE CHANGE IN STRENGTH IS FORECAST DURING THE NEXT COUPLE
OF DAYS. HOWEVER...HANNA IS FORECAST TO LOSE TROPICAL
CHARACTERISTICS ON SUNDAY.

TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 200 MILES...325 KM
FROM THE CENTER. WALLOPS ISLAND VIRGINIA RECENTLY REPORTED A WIND
GUST OF 54 MPH...87 KM/HR.

ESTIMATED MINIMUM CENTRAL PRESSURE IS 994 MB...29.35 INCHES.

STORM SURGE FLOODING OF 1 TO 3 FEET ABOVE NORMAL TIDE LEVELS...WITH
LOCALLY HIGHER LEVELS IN BAYS AND ACCOMPANIED BY LARGE AND DANGEROUS
BATTERING WAVES...IS EXPECTED IN THE WARNING AREA. COASTAL STORM
SURGE FLOODING ALONG THE ATLANTIC COASTS OF SOUTH CAROLINA AND
NORTH CAROLINA...INCLUDING THE PAMLICO AND ABLEMARLE SOUNDS...
SHOULD GRADUALLY SUBSIDE TODAY.

HANNA IS EXPECTED TO PRODUCE RAINFALL ACCUMULATIONS OF 3 TO 6 INCHES
FROM THE NORTHERN MID-ATLANTIC STATES NORTHEASTWARD THROUGH NEW
ENGLAND...WITH ISOLATED MAXIMUM AMOUNTS OF 8 INCHES POSSIBLE.
THESE RAINFALL AMOUNTS COULD PRODUCE FLASH FLOODING ACROSS THESE
REGIONS.

ISOLATED TORNADOES ARE POSSIBLE TONIGHT OVER THE COASTAL AREAS OF
SOUTHERN NEW ENGLAND.

REPEATING THE 500 PM EDT POSITION...38.5 N...75.8 W. MOVEMENT
TOWARD...NORTHEAST NEAR 28 MPH. MAXIMUM SUSTAINED WINDS...50 MPH.
MINIMUM CENTRAL PRESSURE...994 MB.

AN INTERMEDIATE ADVISORY WILL BE ISSUED BY THE NATIONAL HURRICANE
CENTER AT 800 PM EDT FOLLOWED BY THE NEXT COMPLETE ADVISORY AT 1100
PM EDT.

$$
FORECASTER BEVEN

[Image: 194734W_sm.gif]
500 PM EDT SAT SEP 06 2008

THE CENTER OF HANNA IS MOVING OVER THE DELMARVA PENINSULA...
WITH RADAR DATA CONTINUING TO SHOW WIDESPREAD RAINBANDS OVER THE
NORTHERN SEMICIRCLE. HOWEVER...THE CENTRAL CONVECTION IS
DECREASING...AND THE CENTRAL PRESSURE HAS RISEN TO 994 MB.
RECENT SURFACE OBSERVATIONS HAVE SHOWN 35-40 KT SUSTAINED WINDS.
SO...THE MAXIMUM INTENSITY IS MAINTAINED AT 45 KT ON THE PREMISE
THAT THE MAXIMUM WINDS WERE NOT SAMPLED. AS BEFORE...WHILE LITTLE
CHANGE IN STRENGTH IS LIKELY THROUGH THE FORECAST PERIOD...HANNA IS
EXPECTED TO LOSE TROPICAL CHARACTERISTICS IN 12-24 HOURS.

THE INITIAL MOTION IS NOW 040/23. HANNA IS ENTERING THE WESTERLIES
AND SHOULD ACCELERATE NORTHEASTWARD FOR THE NEXT 24-36 HR..FOLLOWED
BY A RAPID EASTWARD MOTION. A TURN TOWARD THE NORTHEAST WITH SOME
DECELERATION IS POSSIBLE AFTER 96 HR. THE MODEL GUIDANCE IS FAIRLY
WELL CLUSTERED AROUND THIS SCENARIO...AND THE NEW FORECAST TRACK IS
ESSENTIALLY AN UPDATE OF THE PREVIOUS TRACK.

FORECAST POSITIONS AND MAX WINDS

INITIAL 06/2100Z 38.5N 75.8W 45 KT...INLAND
12HR VT 07/0600Z 41.7N 71.8W 45 KT...INLAND
24HR VT 07/1800Z 45.3N 64.6W 45 KT...EXTRATROPICAL
36HR VT 08/0600Z 48.3N 56.0W 45 KT...INLAND EXTRATROPICAL
48HR VT 08/1800Z 49.6N 47.2W 45 KT...EXTRATROPICAL
72HR VT 09/1800Z 51.5N 31.0W 45 KT...EXTRATROPICAL
96HR VT 10/1800Z 56.0N 17.5W 45 KT...EXTRATROPICAL
120HR VT 11/1800Z 60.0N 10.0W 45 KT...EXTRATROPICAL

$$
FORECASTER BEVEN

PA Weather Watcher:omgwtf

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09-06-2008, 07:03 PM
Post: #572
Tropical Storm Hanna makes landfall on the Carolina coast
800 pm edt sat sep 06 2008

corrected for spelling of atlantic city new jersey in location block

...hanna a little stronger as it races toward new england...

At 800 pm edt...0000z...the tropical storm warning is discontinued
south of cape henlopen delaware. A tropical storm warning is now in
effect from cape henlopen northward to merrimack river
massachusetts...including delaware bay...new york harbor...long
island sound...block island...martha's vineyard and nantucket. A
tropical storm warning means that tropical storm conditions are
expected within the warning area within the next 24 hours.

For storm information specific to your area...including possible
inland watches and warnings...please monitor products issued
by your local weather office.

At 800 pm edt...0000z...the center of tropical storm hanna was
located near latitude 39.5 north...longitude 74.6 west or near
atlantic new jersey. This position is also about 110 miles...180
km... South-southwest of new york city and 120 miles...195 km
southwest of islip new york.

Hanna is moving toward the northeast near 28 mph...44 km/hr. This
general motion is expected to continue with an increase in forward
speed during the next couple of days. On the forecast track...the
center of hanna will cross the eastern mid-atlantic states
tonight...and move near or over southern new england sunday
morning. The center is forecast to pass near or over the canadian
maritimes sunday afternoon.

Information from ships...buoys...and noaa doppler weather radars
indicate maximum sustained winds have increased to near 55 mph...93
km/hr...with higher gusts. Little change in strength is forecast
during the next couple of days. However...hanna is forecast to
lose tropical characteristics on sunday.

Tropical storm force winds extend outward up to 200 miles...325 km
...mainly over water to the east and southeast of the center. During
the past couple of hours...two ships near the mouth of delaware bay
reported sustained winds of 49 mph...80 km/hr and 46 mph...74
km/hr.

The estimated minimum central pressure based on a recent report from
a noaa buoy in delaware bay is 992 mb...29.29 inches.

Storm surge flooding of 1 to 3 feet above normal tide levels...with
locally higher levels in bays and accompanied by large and dangerous
battering waves...is expected in the warning area. Coastal storm
surge flooding along the atlantic coasts of south carolina and
north carolina...including the pamlico and ablemarle sounds...
Should gradually subside tonight.

Hanna is expected to produce rainfall accumulations of 3 to 6 inches
from the northern mid-atlantic states northeastward through new
england...with isolated maximum amounts of 8 inches possible.
These rainfall amounts could produce flash flooding across these
regions.

Isolated tornadoes are possible tonight over the coastal areas of
southern new england.

Repeating the 800 pm edt position...39.5 n...74.6 w. Movement
toward...northeast near 28 mph. Maximum sustained winds...55 mph.
Minimum central pressure...992 mb.

The next advisory will be issued by the national
hurricane center at 1100 pm edt.

$$
forecaster stewart

PA Weather Watcher:omgwtf

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09-06-2008, 09:40 PM (This post was last modified: 09-06-2008 09:51 PM by mmru4real.)
Post: #573
Tropical Storm Hanna makes landfall on the Carolina coast
1100 pm edt sat sep 06 2008

...hanna producing heavy rainfall across most of new england...

At 11 pm edt...0300 utc...the tropical storm warning is discontinued
from sandy hook new jersey southward. A tropical storm warning is
now in effect from north of sandy hook northward to merrimack river
massachusetts...including new york harbor...long island sound...
Block island...martha's vineyard and nantucket. A tropical
storm warning means that tropical storm conditions are expected
within the warning area within the next 24 hours.

For storm information specific to your area...including possible
inland watches and warnings...please monitor products issued
by your local weather office.

At 1100 pm edt...0300z...the center of tropical storm hanna was
located near latitude 40.5 north...longitude 73.4 west or about 90
miles...145 km...west-southwest of the eastern tip of long island
and about 135 miles...220 km...southwest of providence rhode island.

Hanna is moving toward the northeast near 30 mph...48 km/hr. This
general motion is expected to continue with an increase in forward
speed during the next couple of days. On the forecast track...the
center of hanna will move near or over southern new england tonight
and sunday morning... And move over the canadian maritimes by
sunday afternoon.

Information from ships...buoys...and noaa doppler weather radars
indicate maximum sustained winds remain near 55 mph...93 km/hr...
With higher gusts. Little change in strength is forecast during the
next couple of days. However...hanna is expected to lose tropical
characteristics by sunday afternoon.

Tropical storm force winds extend outward up to 200 miles...325 km
...mainly over water to the east and southeast of the center. During
the past couple of hours...reports from several ships and buoys
south of long island indicate sustained winds of 45 mph...72 km/hr
to 55 mph...86 km/hr...with higher gusts.

The estimated minimum central pressure is 992 mb...29.29 inches.

Storm surge flooding of 1 to 3 feet above normal tide levels...with
locally higher levels in bays and accompanied by large and dangerous
battering waves...is expected in the warning area.

Hanna is expected to produce rainfall accumulations of 2 to 4 inches
across new england...with isolated maximum amounts of 6 inches
possible. These rainfall amounts could produce flash floods across
the region.

Isolated tornadoes are possible tonight over the coastal areas of
southern new england.

Repeating the 1100 pm edt position...40.5 n...73.4 w. Movement
toward...northeast near 30 mph. Maximum sustained winds...60 mph.
Minimum central pressure...992 mb.

An intermediate advisory will be issued by the national hurricane
center at 200 am edt followed by the next complete advisory at 500
am edt.

$$
forecaster stewart

1100 PM EDT SAT SEP 06 2008

THE CENTER OF HANNA IS MOVING OVER THE WEST-CENTRAL PORTION OF LONG
ISLAND. THE INITIAL MOTION ESTIMATE IS 050/26...AND HANNA IS RIGHT
ON TRACK. GRADUAL ACCELERATION IS FORECAST DURING THE NEXT 48 HOURS
AS HANNA GETS CAUGHT UP IN THE FAST UPPER-LEVEL WESTERLIE...AND THE
NEW NHC MODEL GUIDANCE IS TIGHTLY CLUSTERED ABOUT THE PREVIOUS
FORECAST TRACK. THEREFORE...NO SIGNIFICANT CHANGES HAVE BEEN MADE
AND HANNA IS EXPECTED TO CLEAR THE U.S. COASTLINE AROUND CAPE COD
MASSACHUSETTS BY 07/0900Z.

HANNA'S FAST FORWARD MOTION HAS LIKELY CONTRIBUTED TO SOME OF
INCREASE IN OBSERVED SURFACE WINDS OBTAINED FROM SHIPS AND BUOYS
SOUTH OF LONG ISLAND. TWO UNCONFIRMED SHIP REPORTS OF 64 KT AND 60
KT HAVE BEEN RECEIVED DURING THE PAST COUPLE OF HOURS...ONE OF
WHICH OCCURRED IN A RAIN BAND. HOWEVER...THESE COULD HAVE BEEN
ISOLATED GUSTS AND THE RAIN BANDS HAVE SINCE DISSIPATED.
THEREFORE...THE INITIAL INTENSITY WILL BE 50 KT FOR THIS ADVISORY
BASED ON EARLIER DOPPLER VELOCITY VALUES OF 70 KT AT 5000 TO 7000
FT THAT COVERED A SIGNIFICANT PORTION OF THE SOUTHEASTERN QUADRANT
OF HANNA IN SEVERAL RAIN BANDS. LITTLE CHANGE IN STRENGTH IS
EXPECTED THROUGHOUT THE FORECAST PERIOD...AND HANNA COULD EASILY BE
AN EXTRATROPICAL STORM WITH 50-KT SUSTAINED WINDS AT ANY OF THE
FORECAST TIMES.

FORECAST POSITIONS AND MAX WINDS

INITIAL 07/0300Z 40.5N 73.4W 50 KT...BECOMING EXTRATROPICAL
12HR VT 07/1200Z 43.0N 68.8W 50 KT...EXTRATROPICAL
24HR VT 08/0000Z 46.4N 61.1W 45 KT...EXTRATROPICAL
36HR VT 08/1200Z 48.8N 53.2W 45 KT...EXTRATROPICAL
48HR VT 09/0000Z 50.0N 45.0W 45 KT...EXTRATROPICAL
72HR VT 10/0000Z 52.5N 28.3W 45 KT...EXTRATROPICAL
96HR VT 11/0000Z 56.5N 15.5W 45 KT...EXTRATROPICAL
120HR VT 12/0000Z 61.5N 11.5W 45 KT...EXTRATROPICAL

$$
FORECASTER STEWART

PA Weather Watcher:omgwtf

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09-07-2008, 04:22 AM
Post: #574
Tropical Storm Hanna makes landfall on the Carolina coast
Wtnt33 knhc 070856
bulletin
tropical storm hanna advisory number 42
nws tpc/national hurricane center miami fl al082008
500 am edt sun sep 07 2008

...hanna loses tropical characteristics as it moves through new
england...
At 5 am edt...0900 utc...all coastal tropical storm warnings are
discontinued.

For storm information specific to your area...including possible
inland watches and warnings...please monitor products issued
by your local weather office.

At 500 am edt...0900z...the center of tropical storm hanna was
located near latitude 42.6 north...longitude 70.0 west or about 60
miles...100 km...north of chatham massachusetts and about 350 miles
...560 km...west-southwest of halifax nova scotia.

Hanna is moving toward the northeast near 36 mph...57 km/hr...and
this motion is expected to continue for the next 24 hours.

Maximum sustained winds are near 50 mph...85 km/hr...with higher
gusts. Little change in strength is forecast during the next 24
hours.

Tropical storm force winds extend outward up to 200 miles...325 km
...mainly over water to the east and south of the center.

Estimated minimum central pressure is 995 mb...29.38 inches.

Hanna is expected to produce additional rainfall accumulations of 1
to 2 inches across central to southern maine early sunday
morning...with the rainfall ending across maine by around sunrise.
Repeating the 500 am edt position...42.6 n...70.0 w. Movement
toward...northeast near 36 mph. Maximum sustained winds...50 mph.
Minimum central pressure...995 mb.

This is the last public advisory issued by the national hurricane
center on this system. Future information on this system can be
found in high seas forecasts issued by the national weather
service ocean prediction center...under awips header nfdhsfat1 and
wmo header fznt01 kwbc.

$$
forecaster franklin


wtnt43 knhc 070857
tropical storm hanna discussion number 42
nws tpc/national hurricane center miami fl al082008
500 am edt sun sep 07 2008

the cloud pattern associated with hanna is spreading out well ahead
of the surface center...with the closest deep convection now
displaced about 125 nmi to the north and northeast. The
circulation is also close to...but not quite entangled with...a
frontal boundary. Based on the loss of convection near the
core...hanna is no longer considered to be a tropical cyclone and
this will be the last advisory.
Maximum winds are estimated to be 45 kt based on ship reports...and
hanna is expected to remain a vigorous extratropical cyclone during
its passage over the north atlantic. The official forecast is in
good agreement with the gfs.

Future information on this system can be found in high seas
forecasts issued by the national weather service ocean prediction
center...under awips header nfdhsfat1 and wmo header fznt01 kwbc.

Forecast positions and max winds

initial 07/0900z 42.6n 70.0w 45 kt...extratropical
12hr vt 07/1800z 45.4n 64.5w 45 kt...extratropical
24hr vt 08/0600z 48.4n 57.1w 45 kt...extratropical
36hr vt 08/1800z 50.0n 50.0w 45 kt...extratropical
48hr vt 09/0600z 51.0n 43.0w 45 kt...extratropical
72hr vt 10/0600z 53.5n 27.0w 45 kt...extratropical
96hr vt 11/0600z 58.0n 16.0w 40 kt...extratropical
120hr vt 12/0600z...absorbed within extratropical low

$$
forecaster franklin



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