000
AXPZ20 KNHC 270303
TWDEP 

TROPICAL WEATHER DISCUSSION                                                                                                            
NWS NATIONAL HURRICANE CENTER MIAMI FL                           
0405 UTC THU FEB 27 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.                           

...SPECIAL FEATURE...

A STRONG COLD FRONT WILL MOVE INTO THE FORECAST AREA BY THU 
MORNING EXTENDING FROM 30N137W TO 25N140W WITH WINDS TO GALE 
FORCE WITHIN 90 NM E OF THE FRONT. THE FRONT WILL RAPIDLY SHIFT 
EASTWARD WITH MINIMAL GALE FORCE WINDS E OF THE FRONT AND GALE 
FORCE WINDS TO 40 KT EXPECTED N OF 27N BEHIND THE FRONT THU AND 
THU NIGHT. SEAS WILL BUILD AS HIGH AS 22 FT IN NW SWELL BY FRI. 
WINDS WILL DIMINISH BELOW GALE FORCE E OF THE FRONT BY LATE THU 
NIGHT...BUT WILL CONTINUE TO COVER A PORTION OF THE AREA W OF 
THE FRONT THROUGH AT LEAST FRI EVENING.

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

THE MONSOON TROUGH EXTENDS FROM 07N85W TO 4N93W TO 05N102W. THE 
ITCZ EXTENDS FROM 05N102W TO 05N115W. IT THEN RESUMES FROM 
04N122W TO BEYOND 05N140W. NO SIGNIFICANT CONVECTION WAS NOTED.

...DISCUSSION...

WEAK HIGH PRESSURE OF 1018 MB IS CENTERED OVER THE FORECAST AREA 
NEAR 28N118W. A DISSIPATING STATIONARY FRONT EXTENDS FROM 
30N128W TO 22N140W. AN UPPER LEVEL LOW HAS INDUCED A SURFACE 
TROUGH FROM 09N116W TO 03N119W. THE PRESSURE GRADIENT BETWEEN 
THE WEAK HIGH PRESSURE AND THE ITCZ IS ONLY ABLE TO SUPPORT 
GENTLE TO MODERATE TRADES OVER MUCH OF THE FORECAST AREA. THE 
SURFACE TROUGH WILL DISSIPATE BY THU MORNING. NW SWELLS THAT 
WERE USHERED IN BY THE FRONTAL BOUNDARY ARE MOVING ACROSS THE NW 
PART OF THE AREA WITH SEAS IN THE 8 TO 14 FT RANGE FOUND NW OF 
LINE FROM 30N121W TO 12N140W. THE SWELLS WILL CONTINUE TO 
PROPAGATE SE OVER THE NEXT COUPLE OF DAYS WITH SEAS 8 FT OR 
GREATER COVERING MUCH OF THE FORECAST AREA N OF 08N W OF 115W BY 
FRI AFTERNOON. THE STATIONARY FRONT WILL DISSIPATE BY THU 
MORNING BEFORE A STRONGER COLD FRONT ENTERS THE AREA...DISCUSSED 
IN THE SPECIAL FEATURES SECTION. 

$$
AL