000
AXPZ20 KNHC 220905
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1005 UTC SAT MAR 22 2014

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.                           

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THE ITCZ EXTENDS FROM 08N123W TO 06N140W. NO SIGNIFICANT 
CONVECTION WAS NOTED.
     
...DISCUSSION...  

HIGH PRESSURE OF 1029 MB IS CENTERED WELL N OF THE AREA NEAR 
40N134W WITH RIDGE EXTENDING SE TO NEAR 18N108W. THE DISTANCE OF 
THE HIGH PRESSURE CENTER FROM THE ITCZ IS KEEPING A LOOSE 
PRESSURE GRADIENT OVER THE FORECAST AREA...SUPPORTING MODERATE 
TO FRESH TRADES BETWEEN THE AREA OF HIGH PRESSURE AND THE ITCZ. 
WITH LITTLE CHANGE IN THE SYNOPTIC PATTERN EXPECTED OVER THE 
NEXT 48 HOURS...MODERATE TO FRESH TRADES ARE EXPECTED TO 
PREVAIL. 

NW SWELL IS PROPAGATING THROUGH THE FORECAST AREA WITH COMBINED 
SEAS REACHING 8 FT N OF 28N BETWEEN 118W AND 122W...AND ALSO IN 
THE REGION OF FRESH TRADEWINDS FROM WHERE THE NW SWELL IS MIXING 
WITH SHORTER PERIOD TRADEWIND SWELL FROM 07N TO 18N W OF 123W. 
THE NW SWELL OVER THE N PART OF THE FORECAST AREA WILL SUBSIDE 
BELOW 8 FT BY THIS AFTERNOON. THE TRADEWIND SWELL WILL CONTINUE 
TO MIX WITH NW SWELL TO PRODUCE COMBINED SEAS TO 8 FT OVER THE 
AREA FROM 07N TO 13N W OF 123W LATE TONIGHT AND FROM 12N TO 20N 
W OF 133W LATE SUN NIGHT.
 
GAP WINDS...

FRESH TO STRONG TRADES OVER THE CARIBBEAN WILL FUNNEL THROUGH 
THE GAP IN TOPOGRAPHY OF CENTRAL AMERICA. WITH THE ADDED 
COMPONENT OF NOCTURNAL DRAINAGE FLOW...WINDS WILL PULSE TO 25 KT 
DURING THE LATE NIGHT AND EARLY MORNING HOURS OVER THE GULF OF 
PAPAGAYO OVER THE NEXT COUPLE OF NIGHTS.
 
$$
AL