Eastern Pacific Tropical Weather Discussion

000
AXPZ20 KNHC 071537
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                      
1605 UTC FRI MAR 07 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.                           

...SPECIAL FEATURES...                                        

GULF OF TEHUANTEPEC GALE WARNING...HIGH PRES BUILDING OVER THE 
WESTERN GULF OF MEXICO BEHIND A COLD FRONT THAT MOVED THROUGH 
THE AREA YESTERDAY IS ALLOWING A BRIEF PULSE OF WINDS TO GALE 
FORCE INTO THE GULF OF TEHUANTEPEC THIS MORNING. WINDS WILL 
DIMINISH BELOW GALE FORCE LATER THIS MORNING...THEN TO 20 KT OR 
LESS BY THIS EVENING. ASSOCIATED SEAS WILL BUILD TO UP TO 10-11 
FT DURING THE GALE FORCE WINDS...THEN WILL SUBSIDE TO LESS THAN 
8 FT BY THIS EVENING.

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

MONSOON TROUGH EXTENDS FROM 06N77W TO 07N84W TO 03N91W TO 
03N98W. ITCZ EXTENDS FROM 03N98W TO 07N115W TO 04N140W. 
SCATTERED MODERATE CONVECTION IS FROM 06N TO 08N BETWEEN 81W AND 
83W...AND FROM 04N TO 09N BETWEEN 107W AND 113W. 

...DISCUSSION...

IN THE UPPER LEVELS... 

AN UPPER LEVEL RIDGE IS N OF 20N W OF 133W. A NARROW UPPER LEVEL 
TROUGH EXTENDS FROM N BAJA CALIFORNIA TO 20N130W. ANOTHER RIDGE 
IS S OF 18N BETWEEN 115W AND 130W. A CUT-OFF LOW IS CENTERED 
NEAR 11N105W ENHANCING CONVECTION. ANOTHER RIDGE IS E OF 92W. 

ON THE SURFACE...

A 1022 MB HIGH IS CENTERED N OF THE AREA NEAR 33N128W. AN 8 TO 
12 FT SWELL IS ALONG THE COAST OF S CALIFORNIA AND THE NW BAJA 
CALIFORNIA COAST MOVING S. AN OLD AREA OF 8 TO 10 FT SWELL IS 
ALSO NW OF A LINE FROM N BAJA CALIFORNIA TO 04N140W. A SURFACE 
TROUGH IS S OF ACAPULCO MEXICO FROM 15N99W TO 11N108W. SCATTERED 
MODERATE CONVECTION IS WITHIN 60 NM OF THE TROUGH AXIS. EXPECT A 
COLD FRONT TO ENTER THE NW CORNER WITH A NEW SWELL TRAIN OF 8 TO 
14 FT ON SAT EVENING. EXPECT FRESH TO STRONG NORTHERLY WINDS IN 
THE FAR NORTHERN GULF OF CALIFORNIA FROM LATE SATURDAY THROUGH 
SUNDAY DUE TO HIGH PRESSURE BUILDING BRIEFLY OVER THE AREA IN 
THE WAKE OF AN UPPER SHORT WAVE TROUGH. MOREOVER EXPECT GENTLE 
TO MODERATE WIND AND SEA CONDITIONS WILL PREVAIL IN THE GULFS OF 
CALIFORNIA...PAPAGAYO AND PANAMA THROUGH SUN.

$$
FORMOSA