000
AXNT20 KNHC 270548
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL  
205 AM EDT THU MAY 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 0515 UTC...

...TROPICAL WAVES...

AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG 21W TO THE SOUTH OF 9N 
MOVING WESTWARD 10 KT. THIS WAVE IS NOT EASY TO DISCERN IN THE 
SATELLITE IMAGERY. ANY NEARBY PRECIPITATION IS PART OF THE ITCZ 
PRECIPITATION.

AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG 33W/34W. THIS WAVE MAY
END UP BEING RE-LOCATED BASED ON THE LAST VISIBLE IMAGES OF THE 
DAY YESTERDAY. ANY NEARBY PRECIPITATION IS PART OF THE ITCZ 
PRECIPITATION.

AN ATLANTIC OCEAN TROPICAL WAVE IS ALONG 47W/48W 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 67W/68W TO THE 
SOUTH OF 13N INTO VENEZUELA AND THE VENEZUELA/COLOMBIA BORDER...
MOVING WESTWARD 10 KT. SHOWERS AND THUNDERSTORMS ARE WITHIN
A 30 NM RADIUS OF 8N66.5W AND FROM 6N TO 7N BETWEEN 68W AND 69W.
 
...THE ITCZ...

FROM THE SIERRA LEONE COAST NEAR 8N13W TO 4N27W TO 4N40W...
TO THE BRAZIL/FRENCH GUIANA BORDER NEAR 4N52W...TO 5N60W NEAR
THE BORDERS OF VENEZUELA...GUYANA...AND BRAZIL. ISOLATED TO 
MODERATE SHOWERS TO LOCALLY STRONG THUNDERSTORMS ARE TO THE
SOUTH OF 10N BETWEEN AFRICA AND SOUTH AMERICA.

...DISCUSSION...

THE GULF OF MEXICO...
MIDDLE LEVEL TO UPPER LEVEL NORTHWESTERLY WIND FLOW MOVES
ACROSS THE GULF OF MEXICO. SURFACE ANTICYCLONIC FLOW MOVES
AROUND A 1015 MB HIGH PRESSURE CENTER THAT IS NEAR 28N94W.

THE CARIBBEAN SEA...
UPPER LEVEL ANTICYCLONIC FLOW MOVES FROM THE PART OF THE EASTERN 
PACIFIC OCEAN THAT IS TO THE SOUTH OF MEXICO AND CENTRAL AMERICA 
BETWEEN 80W AND 105W...INTO THE GULF OF MEXICO TO THE SOUTH OF 
23N...THROUGH THE YUCATAN CHANNEL...TOWARD THE BASE OF THE 
32N75W 13N74W MIDDLE LEVEL TO UPPER LEVEL TROUGH. ISOLATED 
MODERATE SHOWERS ARE BETWEEN 70W AND 83W. A SURFACE TROUGH
GOES FROM CENTRAL CUBA TO 18N83W TO HONDURAS NEAR 16N86W.
A CARIBBEAN SEA TROPICAL WAVE IS ALONG ALONG 67W/68W TO
THE SOUTH OF 13N INTO VENEZUELA AND THE VENEZUELA/COLOMBIA 
BORDER...MOVING WESTWARD 10 KT.

THE ATLANTIC OCEAN...
DEEP LAYER CYCLONIC FLOW COVERS THE AREAS FROM THE WESTERN 
ATLANTIC OCEAN...OVER THE BAHAMAS...INTO THE SOUTHERN CARIBBEAN 
SEA. A MIDDLE LEVEL TO UPPER LEVEL TROUGH EXTENDS FROM
A CYCLONIC CIRCULATION CENTER THAT IS NEAR 32N75W...ACROSS THE 
SOUTHERN BAHAMAS AND THE WINDWARD PASSAGE...INTO THE CARIBBEAN 
SEA TO 13N74W. ISOLATED MODERATE SHOWERS ARE TO THE NORTH OF 28N 
BETWEEN 73W AND 80W. A SURFACE TROUGH GOES FROM A 1007 MB LOW 
PRESSURE CENTER THAT IS NEAR 31N76W...TO THE NORTHERN BAHAMAS 
NEAR 27N78W...TO SOUTH FLORIDA NEAR 26N81W. AN UPPER LEVEL 
TROUGH GOES FROM A CYCLONIC CIRCULATION CENTER THAT IS JUST TO 
THE WEST OF THE MADEIRA ARCHIPELAGO TO 26N25W. NO PRECIPITATION 
IS DISCERNIBLE WITH THIS TROUGH. BROAD SURFACE ANTICYCLONIC FLOW 
COVERS THE AREA TO THE NORTH OF 10N BETWEEN AFRICA AND 60W. THIS 
FLOW MOVES AROUND A 1024 MB HIGH PRESSURE CENTER THAT IS NEAR 
28N28W.

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

$$
MT