000
AXNT20 KNHC 091142
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL  
805 AM EDT THU JUN 09 2011

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...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1015 UTC.

...TROPICAL WAVES...

AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG 15N24W 10N26W 6N27W. 
SCATTERED MODERATE TO STRONG RAINSHOWERS AND THUNDERSTORMS
ARE FROM 3N TO 7N BETWEEN 23W AND 28W.

...THE ITCZ/THE MONSOON TROUGH...

THE MONSOON TROUGH PASSES THROUGH THE PRIME MERIDIAN ALONG 16N 
TO 14N14W TO 6N24W. THE ITCZ CONTINUES ALONG 8N28W 3N40W...
CROSSING THE EQUATOR ALONG 45W INTO NORTHEASTERN BRAZIL NEAR
1S46W. DISORGANIZED ISOLATED MODERATE RAINSHOWERS AND POSSIBLE 
THUNDERSTORMS ARE ELSEWHERE FROM THE EQUATOR TO 10N BETWEEN 
AFRICA AND SOUTH AMERICA.

...DISCUSSION...

THE GULF OF MEXICO...
BROAD UPPER LEVEL CYCLONIC FLOW COVERS THE ENTIRE GULF OF 
MEXICO...THANKS TO A CYCLONIC CIRCULATION CENTER THAT IS NEAR 
26N88W IN THE CENTER OF THE AREA. BROAD SURFACE ANTICYCLONIC 
WIND FLOW COVERS THE AREA...ALONG A WEAK RIDGE THAT RUNS FROM 
THE NORTHEASTERN CORNER TO THE SOUTHWESTERN CORNER OF THE AREA. 
AREAS OF BROKEN TO OVERCAST MULTILAYERED CLOUDS AND POSSIBLE 
PRECIPITATION ARE IN THE COASTAL WATERS OF SOUTHEASTERN 
LOUISIANA...AND TO THE SOUTH OF 29N TO THE EAST OF 90W ALONG
THE FLORIDA COAST AND IN THE STRAITS OF FLORIDA...AND 
INCLUDING ACROSS FLORIDA TO THE SOUTH OF 28N.

THE CARIBBEAN SEA...
A 1009 MB LOW PRESSURE CENTER IS NEAR 18.5N 82.5W...ABOUT 80 NM 
TO THE SOUTHWEST OF GRAND CAYMAN AND 240 NM TO THE WEST OF 
JAMAICA. UPPER LEVEL SOUTHWESTERLY WINDS ARE MOVING ACROSS THE 
AREA OF THIS LOW CENTER. HEAVY RAINS MAY CONTINUE ACROSS THE 
NORTHERNMOST PART OF THE CARIBBEAN SEA. IT IS POSSIBLE THAT THIS 
PRECIPITATION MAY CAUSE CONTINUAL PROBLEMS WITH FLASH FLOODS AND 
MUD SLIDES IN SECTIONS OF HAITI...THE DOMINICAN REPUBLIC... 
JAMAICA...AND CUBA AS THE SYSTEM DRIFTS GENERALLY NORTHWARD 
DURING THE NEXT FEW DAYS. BROAD CYCLONIC FLOW ENVELOPES THE 
AREA. CLOUDS AND POSSIBLE RAINSHOWERS ARE TO THE NORTH OF 13N60W
16N70W 15N80W 13N83W AT THE COAST OF NICARAGUA. WHATEVER WAS
COMPARATIVELY HEAVIER IN TERMS OF RAINSHOWERS AND THUNDERSTORMS 
EIGHT HOURS AGO HAS WEAKENED NOW...WITH WARMING CLOUD TOP 
TEMPERATURES AND DISSIPATING CONVECTIVE PRECIPITATION...FOR THE
MOMENT...IN THE CARIBBEAN SEA. SCATTERED MODERATE RAINSHOWERS
TO ISOLATED STRONG THUNDERSTORMS ARE IN THE ATLANTIC OCEAN TO 
THE NORTH OF HISPANIOLA AND ACROSS THE BAHAMAS FROM 20N TO 24N
BETWEEN 69W AND 78W. IT HAS BEEN RAINING NEARLY EVERYWHERE
AROUND THE NORTHERN CARIBBEAN SEA BASIN FOR MOST OF THE LAST 
WEEK IN THE WATERS AND LAND AREAS.
 
THE ATLANTIC OCEAN...
AN UPPER LEVEL TROUGH PASSES THROUGH 33N53W TO 21N62W. A SURFACE 
TROUGH IS ALONG 20N64W TO A 1011 MB LOW PRESSURE CENTER THAT IS 
NEAR 22N62W...TO 24N60W 29N50W BEYOND 32N46W. STRONG RAINSHOWERS 
AND THUNDERSTORMS ARE WITHIN A 60 NM RADIUS OF 21N60W AND WITHIN
A 30 NM RADIUS OF 22N54W. BROKEN TO OVERCAST MULTILAYERED CLOUDS
AND POSSIBLE PRECIPITATION ARE ELSEWHERE WITHIN 200 NM ON EITHER 
SIDE OF 18N63W 24N51W BEYOND 32N44W. SURFACE ANTICYCLONIC FLOW 
COVERS THE ATLANTIC OCEAN TO THE NORTH OF 26N TO THE WEST OF 
60W...MOVING AROUND A 1019 MB HIGH PRESSURE CENTER THAT IS NEAR
32N68W. A SURFACE RIDGE EXTENDS FROM A 1026 MB HIGH PRESSURE 
CENTER THAT IS NEAR 32N26W TO 25N38W AND 18N50W. BROAD UPPER 
LEVEL CYCLONIC WIND FLOW COVERS THE ATLANTIC OCEAN TO THE NORTH 
OF 28N TO THE EAST OF 30W.

F0R ADDITIONAL INFORMATION PLEASE VISIT
HTTP://WWW.HURRICANES.GOV/MARINE

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MT