000
AXNT20 KNHC 260526
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
205 AM EDT WED MAY 26 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...

...SPECIAL FEATURE...

DEEP LAYER CYCLONIC FLOW COVERS THE ATLANTIC OCEAN AROUND
A WATER VAPOR IMAGERY TROUGH THAT EXTENDS FROM A CYCLONIC 
CIRCULATION CENTER THAT IS NEAR 32N74W TO ANDROS ISLAND IN
THE BAHAMAS...ACROSS EASTERN CUBA...INTO THE SOUTHWESTERN
CARIBBEAN SEA TO 12N79W. A SURFACE 1007 MB LOW PRESSURE CENTER 
IS NEAR 31N74W. UPPER LEVEL ANTICYCLONIC FLOW HAS INVADED THE 
THE SPACE THAT WAS BEING COVERED BY CYCLONIC FLOW DURING THE 
LAST FEW DAYS...NOW TO THE RIGHT OF THE LINE FROM EXTREME 
EASTERN CUBA TO 26N72W 30N64W 27N53W. A SURFACE TROUGH IS ALSO 
ALONG 77W ON TOP OF JAMAICA. SHOWERS ARE AROUND THE SOUTHERN 
HALF OF JAMAICA...NEAR 32N73W AND 32N78W.

...TROPICAL WAVES...

AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG 26W/27W TO THE SOUTH OF 
10N MOVING WESTWARD 10 KT. ANY NEARBY PRECIPITATION IS PART OF 
THE ITCZ PRECIPITATION.

AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG 41W/42W TO THE SOUTH OF 
10N MOVING WESTWARD 10 KT. ANY NEARBY PRECIPITATION IS PART OF 
THE ITCZ PRECIPITATION. 

A CARIBBEAN SEA TROPICAL WAVE IS ALONG ALONG 61W/62W TO THE  
SOUTH OF 12N INTO VENEZUELA MOVING WESTWARD 10 KT. STRONG 
SHOWERS AND THUNDERSTORMS ARE FROM 10N TO 11N COVERING PARTS OF 
TRINIDAD AND MAYBE TOBAGO. SIMILAR PRECIPITATION IS IN VENEZUELA
WITHIN 30 NM ON EITHER SIDE OF 7N63W 9N66W 10N69W.

A CARIBBEAN SEA TROPICAL WAVE IS ALONG 72W TO THE SOUTH OF 12N
MOVING WESTWARD 10 KT. STRONG SHOWERS AND THUNDERSTORMS ARE FROM
12N TO 13N BETWEEN 72W AND 73W...IN THE PENINSULA DE LA GUAJIRA 
OF EXTREME NORTHEASTERN COLOMBIA...AND ALONG THE 
COLOMBIA/VENEZUELA FROM 8N TO 9N BETWEEN 72W AND 73W.

...THE ITCZ...

FROM THE SIERRA LEONE COAST NEAR 11N15W TO 5N34W 5N43W...
TO THE BRAZIL/FRENCH GUIANA BORDER NEAR 4N51W...TO 4N59W
IN GUYANA. ISOLATED TO MODERATE SHOWERS TO LOCALLY STRONG 
THUNDERSTORMS ARE FROM 2N TO 9N BETWEEN AFRICA AND 56W.

...DISCUSSION...

THE GULF OF MEXICO...
UPPER LEVEL SOUTHWESTERLY WIND FLOW MOVES FROM THE EASTERN 
PACIFIC OCEAN ACROSS MEXICO TO THE NORTH OF 24N. LARGE-SCALE
UPPER LEVEL ANTICYCLONIC FLOW MOVES AROUND A 95W RIDGE. THE 
TROUGH ON WATER VAPOR IMAGERY FROM THE WESTERN ATLANTIC OCEAN 
AND THE SPECIAL FEATURE 1007 MB LOW PRESSURE CENTER THAT IS NEAR 
31N74W EXTENDS FROM 32N74W TO ANDROS ISLAND IN THE BAHAMAS... 
ACROSS EASTERN CUBA...INTO THE SOUTHWESTERN CARIBBEAN SEA NEAR 
12N79W. THE SURFACE PRESSURE PATTERN ACROSS THE AREA IS FLAT AND 
WEAK.

THE CARIBBEAN SEA...
THE TROUGH ON WATER VAPOR IMAGERY FROM THE WESTERN ATLANTIC 
OCEAN AND THE SPECIAL FEATURE 1007 MB LOW PRESSURE CENTER THAT 
IS NEAR 31N74W EXTENDS FROM 32N74W TO ANDROS ISLAND IN THE 
BAHAMAS...ACROSS EASTERN CUBA...INTO THE SOUTHWESTERN CARIBBEAN 
SEA NEAR 12N79W. A SURFACE TROUGH IS ALSO ALONG 77W ON TOP OF 
JAMAICA. SHOWERS AND THUNDERSTORMS ARE IN THE SOUTH CENTRAL 
CARIBBEAN SEA ACCOMPANYING THE 72W TROPICAL WAVE. SHOWERS AND 
THUNDERSTORMS ARE AROUND TRINIDAD AND TOBAGO WITH THE 61W/62W
TROPICAL WAVE.

THE ATLANTIC OCEAN...
AN UPPER LEVEL TROUGH GOES FROM A CYCLONIC CIRCULATION
CENTER THAT IS NEAR 35N24W TO 32N25W TO 23N29W TO 18N29W.
NO PRECIPITATION IS DISCERNIBLE WITH THIS TROUGH.
BROAD SURFACE ANTICYCLONIC FLOW COVERS THE AREA TO THE 
NORTH OF 10N BETWEEN AFRICA AND 56W. THIS FLOW MOVES AROUND
A 1022 MB HIGH PRESSURE CENTER THAT IS NEAR 30N30W.

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

$$
MT