000
AXNT20 KNHC 261800
TWDAT 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
205 AM EDT WED APR 26 2006

TROPICAL WEATHER DISCUSSION FOR NORTH AMERICA...CENTRAL 
AMERICA...THE GULF OF MEXICO...THE CARIBBEAN SEA...NORTHEASTERN 
SECTIONS OF SOUTH AMERICA...AND THE 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1715 UTC.

...THE ITCZ...
ITCZ IS CENTERED ALONG 5N10W 3N20W 1N50W. SCATTERED 
MODERATED/ISOLATED STRONG CONVECTION IS LOCATED FROM 2N-9N 
BETWEEN 8W-15W...FROM 1N-4N BETWEEN 22N-33N AND FROM 1N-4N 
BETWEEN 43W-54W.  ISOLATED MODERATE CONVECTION IS LOCATED FROM 
1N-6N BETWEEN 16W-20W AND FROM 1S-5N BETWEEN 33W-43W.

...DISCUSSION...
THE GULF OF MEXICO...
MIDDLE TO UPPER LEVEL TROPICAL AIR RIDGE CONTINUES TO STREAM 
FROM THE EASTERN PACIFIC WATERS ACROSS INTERIOR MEXICO INTO 
EASTERN TEXAS TO NEAR 21N94W.  A SURFACE COLD FRONT EXTENDING 
FROM A 1011 MB SURFACE LOW LOCATED NEAR 35N89W CONTINUING SW TO 
THE MEXICO/TEXAS BORDER...THEN WEST TO NEAR 32N107W....SCATTERED 
MODERATE CONVECTION IS PUSHING AHEAD OF THE COLD FRONT AND IS 
LOCATED FROM 28N-34N BETWEEN 84W-89W. ELSEWHERE...A BROAD 
SURFACE LOW PRESSURE HAS DEVELOPED IN CENTRAL MEXICO LOCATED 
NEAR 21N102W...ISOLATED CONVECTION IS POSSIBLE LATER TODAY.  
ELSEWHERE... MIDDLE TO UPPER LEVEL DRY AIR EXTENDS FROM 81W-92W 
S OF 26N.

THE CARIBBEAN SEA...
MIDDLE TO UPPER LEVEL RIDGE CONTINUES TO TO DOMINATE MUCH OF THE 
CARIBBEAN SEA E OF 87W.  SCATTERED MODERATE CONVECTION IS FOUND  
S OF 18N BETWEEN 70W-87W...MAINLY OVER PANAMA...COLUMBIA AND 
VENEZUELA MOVING NORTH INTO THE CARIBBEAN SEA.  ELSEWHERE... 
MIDDLE TO UPPER LEVEL AIR FROM THE PACIFIC OCEAN CONTINUES TO 
STREAM INTO THE AREA W OF 87W.  A NARROW UPPER LEVER TROUGH HAS 
SQUEEZED ITSELF INTO THE PICTURE...EXTENDING FROM THE WESTERN 
TIP OF CUBA SOUTH INTO THE YUCATAN PENINSULA TO NEAR 6N93W.   

THE ATLANTIC OCEAN...
A 1022 MB HIGH PRESSURE CENTER LOCATED NEAR 33N50W WITH A RIDGE 
THAT EXTENDS SW INTO THE CARIBBEAN SEA AND GULF OF MEXICO 
DOMINATES THE WESTERN ATLANTIC IN THE LOWER LEVELS. IN THE UPPER 
LEVELS A SHORTWAVE RIDGE CONTINUES TO PUSH NORTHEASTWARD AND IS 
NOW LOCATED JUST NORTH OF THE AREA.  WESTERLY FLOW IS DOMINATING 
THE WESTERN ATLANTIC. ELSEWHERE..THE DEEP LAYER LOW PRESSURE 
LOCATED WELL NORTH OF THE AREA WITH A SURFACE  STATIONARY 
FRONT...ENTERS THE AREA NEAR 30N33W CONTINUING SW TO NEAR 
19N65W...ISOLATED MODERATE CONVECTION IS NOTED FROM 23N-28N 
BETWEEN 45W-54W.  ELSEWHERE...MIDDLE TO UPPER LEVEL ANTICYCLONIC 
FLOW IS SOUTHEAST OF THE CENTRAL ATLANTIC TROUGH...COVERING THE 
ATLANTIC WATERS SOUTH OF 26N BETWEEN A MIDDLE TO UPPER LEVEL 
TROUGH OVER MOROCCO AND 60W.

$$
JP/DS