[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 270513
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT MON SEP 27 2010

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL
AMERICA...GULF OF MEXICO...CARIBBEAN SEA...NORTHERN SECTIONS
OF SOUTH AMERICA...AND ATLANTIC OCEAN TO THE AFRICAN COAST
FROM THE EQUATOR TO 32N. THE FOLLOWING INFORMATION IS BASED
ON SATELLITE IMAGERY...METEOROLOGICAL ANALYSIS...WEATHER
OBSERVATIONS...AND RADAR.

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 0445 UTC.

...THE ITCZ...

10N17W 7N22W 9N29W...AND FROM 10N36W TO 7N42W AND 7N49W.
A 1011 MB LOW PRESSURE CENTER IS NEAR 12N35W. STRONG RAINSHOWERS
AND THUNDERSTORMS ARE FROM 12N TO 14N BETWEEN 32W AND 36W.
STRONG RAINSHOWERS AND THUNDERSTORMS ARE FROM 4N TO 7N BETWEEN
34W AND 40W. ISOLATED MODERATE RAINSHOWERS AND POSSIBLE
THUNDERSTORMS ARE ELSEWHERE FROM 3N TO 14N BETWEEN AFRICA AND
50W.

...DISCUSSION...

THE GULF OF MEXICO...
THE REMNANT 1002 MB LOW PRESSURE CENTER OF MATTHEW IS IN THE
ISTHMUS OF TEHUANTEPEC OF SOUTHERN MEXICO. STRONG RAINSHOWERS
AND THUNDERSTORMS COVER THE AREA FROM CENTRAL GUATEMALA INTO
SOUTHEASTERN MEXICO...THE ISTHMUS OF TEHUANTEPEC...AND INTO THE
SOUTHWESTERN CORNER OF THE GULF OF MEXICO...FROM 16N TO 20N
BETWEEN 90W AND 96W. A DEEP LAYER TROUGH IS DIGGING INTO THE
NORTH CENTRAL GULF OF MEXICO. COMPARATIVELY DRIER AIR IN
SUBSIDENCE ON WATER VAPOR IMAGERY HAS CLEARED LOUISIANA...
EAST TEXAS AND PARTS OF SOUTH CENTRAL TEXAS...TO THE NORTH OF
29N TO THE WEST OF 90W. THE COLD FRONT THAT IS BEING SUPPORTED
BY THE TROUGH EXTENDS FROM A 1007 MB FLORIDA PANHANDLE LOW
PRESSURE CENTER...ACROSS SOUTHEASTERN LOUISIANA...INTO EAST
TEXAS AND SOUTH CENTRAL TEXAS. RAINSHOWERS AND POSSIBLE
THUNDERSTORMS ARE IN FLORIDA TO THE NORTH OF 28N...AND IN THE
FLORIDA PANHANDLE. AN UPPER LEVEL CYCLONIC CIRCULATION CENTER IS
IN MEXICO NEAR 28N109W. CYCLONIC FLOW THAT IS AROUND THE CENTER
COVERS THE AREA FROM 21N TO 31N BETWEEN 104W AND 120W. STRONG
RAINSHOWERS AND THUNDERSTORMS ARE WITHIN A 30 NM TO 60 NM RADIUS
OF 22N104W...IN AN AREA OF UPPER LEVEL DIFFLUENT WIND FLOW.

THE CARIBBEAN SEA...
A LOW LEVEL TO MIDDLE LEVEL TROUGH EXTENDS FROM THE ISTHMUS OF
TEHUANTEPEC OF MEXICO...ACROSS THE YUCATAN PENINSULA INTO THE
NORTHWESTERN CORNER OF THE CARIBBEAN SEA...CURVING INTO THE
CENTRAL CARIBBEAN SEA. STRONG RAINSHOWERS AND THUNDERSTORMS
ARE FROM 15N TO 18N BETWEEN 77W AND 83W. STRONG RAINSHOWERS AND
THUNDERSTORMS ARE IN THE WATERS OFF THE COAST OF COLOMBIA
BETWEEN 75W AND 77W TO THE SOUTH OF 12N...AND FROM NORTHWESTERN
VENEZUELA INTO COLOMBIA FROM 6N TO 10N BETWEEN 70W AND 75W.
THIS PRECIPITATION IS TAKING PLACE IN THE AREA OF A MIDDLE LEVEL
INVERTED TROUGH THAT IS ON TOP OF THAT PART OF SOUTH AMERICA.
UPPER LEVEL MOISTURE COVERS THE CARIBBEAN SEA TO THE WEST OF 66W.
AN UPPER LEVEL TROUGH PASSES THROUGH THE ATLANTIC OCEAN NEAR
32N70W TO 25N71W TO 18N72W. SCATTERED MODERATE RAINSHOWERS AND
POSSIBLE THUNDERSTORMS ARE FROM 13N TO THE SOUTHERN COAST OF
HISPANIOLA BETWEEN 66W AND 72W. BROAD UPPER LEVEL ANTICYCLONIC
FLOW COVERS THE AREA TO THE WEST OF 67W. AN UPPER LEVEL CUT-OFF
CYCLONIC CIRCULATION CENTER IS IN THE EASTERN CARIBBEAN SEA NEAR
14N63W. CYCLONIC FLOW COVERS THE ATLANTIC OCEAN AND THE
CARIBBEAN SEA FROM 11N TO 16N BETWEEN 58W AND 65W. ISOLATED
MODERATE RAINSHOWERS ARE FROM 10N TO 18N BETWEEN 56W AND 64W.

THE ATLANTIC OCEAN...
AN UPPER LEVEL TROUGH PASSES THROUGH THE ATLANTIC OCEAN NEAR
32N70W TO 25N71W TO 18N72W. ISOLATED MODERATE RAINSHOWERS ARE
FROM 20N TO 28N BETWEEN 68W AND 72W. THE 1014 MB REMNANT LOW
PRESSURE CENTER OF JULIA IS NEAR 29N55W. MULTILAYERED CONVECTIVE
DEBRIS CLOUDS AND POSSIBLE SHOWERS COVER THE AREA FROM 28N TO
30N BETWEEN 54W AND 56W.  THE 1008 MB REMNANT LOW PRESSURE
CENTER OF LISA IS NEAR 26N29W. LOW CLOUDS ARE SWIRLING FROM 24N
TO 30N BETWEEN 27W AND 34W. RAINSHOWERS ARE POSSIBLE FROM 27N
TO 30N BETWEEN 25W AND 30W. AN UPPER LEVEL TROUGH PASSES THROUGH
32N27W TO A 28N36W CYCLONIC CIRCULATION CENTER TO 22N46W TO
20N53W TO 14N56W. CYCLONIC FLOW THAT IS MOVING AROUND THIS
TROUGH COVERS THE CARIBBEAN SEA TO THE NORTH OF 15N TO THE
EAST OF 64W.

FOR ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

$$
MT





This weather bulletin was brought to you by:
www.nashvilleweather.net