000
AXNT20 KNHC 071055
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
805 AM EDT SUN JUN 07 2009

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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1015 UTC.

...TROPICAL WAVES...

A WEAK TROPICAL WAVE IS ALONG 51W/52W TO THE SOUTH OF 5N AT 
07/0600 UTC. THE WAVE IS MOVING WESTWARD 15 KT. NO SIGNIFICANT 
DEEP CONVECTIVE PRECIPITATION IS ASSOCIATED WITH IT. UPPER LEVEL 
SOUTHWESTERLY WIND FLOW IS ON TOP OF THE AREA THROUGH WHICH THIS 
WAVE IS MOVING. BROKEN TO OVERCAST MULTILAYERED CLOUDS COVER THE
AREA TO THE SOUTH OF 15N TO THE WEST OF 35W.

A TROPICAL WAVE IS ALONG 18N60W 13N62W INTO EASTERN VENEZUELA
NEAR 6N63W AT 07/6000 UTC...MOVING WESTWARD 10 TO 15 KT. SHOWERS 
AND THUNDERSTORMS ARE FROM 17N TO 18N BETWEEN 59W AND 61W...JUST
TO THE EAST OF ANTIGUA AND BARBUDA. THE NORTHERN PART OF THE 
WAVE BECAME SEPARATED FROM THE ORIGINAL SYSTEM ABOUT 24 HOURS 
AGO. THIS TROUGH IS ALONG 23N53W 19N60W.

...THE ITCZ...

FROM AFRICA NEAR 11N12W TO 8N20W 5N30W 3N40W TO 3N49W. WIDELY
SCATTERED TO SCATTERED STRONG SHOWERS AND THUNDERSTORMS ARE
FROM 1N TO 3N BETWEEN 45W AND 52W. SCATTERED MODERATE SHOWERS
ARE ELSEWHERE TO THE SOUTH OF 5N BETWEEN 30W AND 50W/51W ALONG
THE COAST OF BRAZIL...AND FROM 8N TO 9N WITHIN 30 NM ON EITHER 
SIDE OF 20W. ISOLATED MODERATE SHOWERS ARE ELSEWHERE FROM
5N TO 10N TO THE EAST OF 30W.

...DISCUSSION...

THE GULF OF MEXICO...THE NORTHWESTERN CARIBBEAN SEA...
THE ATLANTIC OCEAN TO THE WEST OF 70W...
A DEEP LAYER TROUGH EXTENDS FROM THE CAROLINAS INTO THE
EASTERN GULF OF MEXICO ALONG THE FLORIDA WEST COAST...THROUGH 
THE YUCATAN CHANNEL...INTO THE GULF OF HONDURAS. CYCLONIC FLOW
ON WATER VAPOR IMAGERY COVERS THE AREA TO THE EAST OF 92W.
A SURFACE TROUGH IS ALONG THE LINE FROM A 1013 MB SOUTHEASTERN 
GEORGIA LOW PRESSURE CENTER TO 26N85W IN THE SOUTHEASTERN GULF 
OF MEXICO. SHOWERS AND ISOLATED THUNDERSTORMS CONTINUE FROM 
WESTERN CUBA AND THE WATERS JUST OFF WESTERN CUBA...ACROSS
SOUTH FLORIDA AND THE FLORIDA KEYS...FROM THE BAHAMAS
WESTWARD...AND TO THE NORTH OF 26N TO THE WEST OF 70W.

THE REST OF THE CARIBBEAN SEA...
CYCLONIC FLOW IS REACHING THE GULF OF HONDURAS THANKS TO THE 
EASTERN GULF OF MEXICO TROUGH THAT IS SUPPORTING THE SURFACE 
TROUGH. SHOWERS AND THUNDERSTORMS HAVE BEEN OCCURRING IN THE 
WATERS OF THE CARIBBEAN SEA...FROM 9N80W 18N72W TO THE SOUTHERN
SIDE OF THE DEEP LAYER TROUGH THAT STARTS IN THE EASTERN GULF
OF MEXICO AND LEADS TO THE GULF OF HONDURAS. UPPER LEVEL 
ANTICYCLONIC FLOW COVERS THE REST OF THE AREA. A SURFACE TROUGH  
IS ALONG 74W FROM 18N IN THE WINDWARD PASSAGE TO THE BAHAMAS
NEAR 24N. BROKEN TO OVERCAST MULTILAYERED CLOUDS ARE EVERYWHERE 
IN THE AREA AROUND THE TROUGH. SHOWERS ALSO ARE POSSIBLE AROUND 
THE TROUGH. 
 
THE REST OF THE ATLANTIC OCEAN...
THE PRECIPITATION IN THE ATLANTIC OCEAN TO THE NORTH OF 20N
TO THE WEST OF 70W IS ASSOCIATED WITH THE DEEP LAYER TROUGH
AND THE SURFACE TROUGH. A MIDDLE LEVEL TO UPPER LEVEL CYCLONIC
CIRCULATION CENTER IS NEAR 25N56W. BROAD CYCLONIC FLOW ON WATER 
VAPOR IMAGERY COVERS THE AREA TO THE NORTH OF 18N BETWEEN 50W 
AND 70W. SHOWERS AND THUNDERSTORMS ARE FROM 20N TO 25N BETWEEN 
50W AND 60W.

$$
MT