[Tropical] Tropical Weather Discussion

[EMWIN Server]

AXNT20 KNHC 241804
TWDAT

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 PM EDT FRI SEP 24 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1715 UTC.

...SPECIAL FEATURES...

THE CENTER OF TROPICAL STORM LISA AT 24/1500 UTC IS NEAR
18.9N 27.8W...OR ABOUT 190 NM TO THE NORTHWEST OF THE CAPE
VERDE ISLANDS. LISA IS MOVING NORTHWARD 06 KT. THE ESTIMATED
MINIMUM CENTRAL PRESSURE IS 1002 MB. THE MAXIMUM SUSTAINED
WIND SPEEDS ARE 40 KT WITH GUSTS TO 50 KT. PLEASE READ THE
LATEST NHC INTERMEDIATE PUBLIC ADVISORY UNDER AWIPS/WMO HEADERS
MIATCPAT4/WTNT34 AND THE FULL FORECAST ADVISORY UNDER AWIPS/
WMO HEADERS MIATCMAT4/WTNT24 KNHC FOR MORE DETAILS. STRONG
RAINSHOWERS AND THUNDERSTORMS ARE FROM 19N TO 20N BETWEEN
27W AND 28W. OVERCAST MULTILAYERED CLOUDS AND OTHER POSSIBLE
RAINSHOWERS ARE WITHIN 150 NM ON EITHER SIDE OF 26N22W 23N26W
20N28W.

THE CENTER OF TROPICAL STORM MATTHEW AT 24/1800 UTC IS NEAR
14.6N 83.0W. THIS POSITION IS ABOUT 45 KM TO THE SOUTH-SOUTHEAST
OF CABO GRACIAS A DIOS ALONG THE NICARAGUA/HONDURAS BORDER.
MATTHEW IS MOVING WESTWARD 17 KT. THE ESTIMATED MINIMUM CENTRAL
PRESSURE IS 998 MB. THE MAXIMUM SUSTAINED WIND SPEEDS ARE 45 KT
WITH GUSTS TO 55 KT. PLEASE READ THE LATEST NHC INTERMEDIATE
PUBLIC ADVISORY UNDER AWIPS/WMO HEADERS MIATCPAT5/WTNT35 KNHC
AND THE FULL FORECAST ADVISORY UNDER AWIPS/WMO HEADERS
MIATCMAT5/WTNT25 KNHC FOR MORE DETAILS. STRONG RAINSHOWERS AND
THUNDERSTORMS ARE FROM 13N TO 19N BETWEEN 81W AND 85W. THIS
PRECIPITATION COVERS THE WATERS OF THE NORTHWESTERN AND WESTERN
CARIBBEAN SEA...EASTERN NICARAGUA AND EASTERN HONDURAS.

...TROPICAL WAVES...

NO TROPICAL WAVES ARE ON THE MAP AT THIS TIME.

...THE ITCZ...

9N43W 10N54W 11N63W. ISOLATED MODERATE RAINSHOWERS ARE
TO THE SOUTH OF 10N...MOSTLY CONCENTRATED FROM 3N TO 10N
BETWEEN 16W AND 50W.

...DISCUSSION...

THE GULF OF MEXICO...
AN UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR 29N91W
JUST OFF THE LOUISIANA COAST. ONE TROUGH EXTENDS FROM 29N91W
TO 28N93W TO THE DEEP SOUTH OF TEXAS. A REMNANT TROUGH EXTENDS
EASTWARD FROM THE 29N91W CYCLONIC CENTER TO 28N87W 24N90W...
TO THE MEXICO COAST ALONG 20N. A SURFACE TROUGH GOES FROM WEST
CENTRAL GUATEMALA INTO THE SOUTHWESTERN CORNER OF THE GULF OF
MEXICO NEAR 22N95W. BROAD SOUTHEASTERLY SURFACE WIND FLOW COVERS
THE AREA. ISOLATED MODERATE RAINSHOWERS AND POSSIBLE
THUNDERSTORMS ARE WITHIN 100 NM ON EITHER SIDE OF 28N86W 24N93W
19N96W AT THE MEXICO COAST. ISOLATED MODERATE SHOWERS ARE
OCCURRING AROUND THE FLORIDA PENINSULA FROM NORTH TO SOUTH...
WITH AFTERNOON HEATING.

UPPER LEVEL CYCLONIC FLOW FROM THE ATLANTIC OCEAN
INTO THE CARIBBEAN SEA...AND THE REST OF THE CARIBBEAN SEA...
LARGE-SCALE UPPER LEVEL CYCLONIC FLOW...AND BROKEN TO OVERCAST
MULTILAYERED CLOUDS AND ISOLATED MODERATE RAINSHOWERS COVER THE
ATLANTIC OCEAN AND THE CARIBBEAN SEA FROM 14N TO 25N BETWEEN 65W
AND 78W. THE CENTER OF THE CYCLONIC FLOW IS NEAR 19N72W CLOSE
TO THE HAITI/DOMINICAN REPUBLIC BORDER. STRONG RAINSHOWERS AND
THUNDERSTORMS ARE FROM 12N TO 16N BETWEEN 70W AND 78W IN THE
CARIBBEAN SEA. CLOUDINESS AND ISOLATED MODERATE RAINSHOWERS ARE
FROM 12N TO 14N BETWEEN 56W AND 58W...WITH AN ACCOMPANYING
MIDDLE LEVEL TO UPPER LEVEL TROUGH. THIS FEATURE IS ABOUT 140 NM
TO THE EAST OF BARBADOS.

THE REST OF THE ATLANTIC OCEAN...
AN UPPER LEVEL TROUGH EXTENDS FROM A 33N33W CYCLONIC CIRCULATION
CENTER...TO A SECOND CYCLONIC CENTER THAT IS NEAR 28N34W...TO
22N39W. THE REMNANT LOW PRESSURE CENTER OF JULIA IS A 1013 MB
LOW THAT IS NEAR 31N44W. A SURFACE TROUGH EXTENDS FROM THE LOW
PRESSURE CENTER TO 30N40W AND 27N40W 21N43W. LOW CLOUDS AND
POSSIBLE RAINSHOWERS ARE WITHIN 45 NM ON EITHER SIDE OF THE
TROUGH. AN UPPER LEVEL CYCLONIC CIRCULATION CENTER IS NEAR
16N45W...SURROUNDED BY DRY AIR IN SUBSIDENCE. AN UPPER LEVEL
TROUGH PASSES THROUGH 31N20W TO 25N24W. THIS TROUGH SUPPORTS
A SURFACE 1016 MB LOW PRESSURE CENTER THAT IS NEAR 34N21W.
BROAD SURFACE ANTICYCLONIC WIND FLOW COVERS THE ATLANTIC OCEAN
TO THE NORTH OF 20N TO THE WEST OF 50W. IT IS MOVING AROUND
A 1025 MB HIGH PRESSURE CENTER THAT IS NEAR 34N65W.

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

$$
MT





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