000
AXPZ20 KNHC 130245
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC THU MAR 13 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 FEATURES...

GULF OF TEHUANTEPEC GALE WARNING...A COLD FRONT MOVING ACROSS 
THE NW GULF OF MEXICO WILL SWEEP SOUTHWARD ACROSS THE WESTERN 
GULF OF MEXICO THROUGH TONIGHT. THE DENSER AIRMASS BEHIND THE 
FRONT WILL FUNNEL ACROSS THE ISTHMUS OF TEHUANTEPEC AND INTO THE 
GULF OF TEHUANTEPEC EARLY THIS MORNING. THIS AIRMASS WILL MIX 
DOWN TO THE SURFACE RESULTING IN NLY WINDS REACHING TO GALE 
FORCE STRENGTH WITH SEAS BUILDING TO 14 FT TODAY. THE WINDS AND 
SEAS WILL GRADUALLY DIMINISH INTO FRI AS THE HIGH PRES BEHIND 
THE FRONT SHIFTS EASTWARD ACROSS THE NORTHERN GULF OF MEXICO. 

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

MONSOON TROUGH EXTENDS FROM 07N85W TO 04N94W TO 02N100W TO 
02N107W. ITCZ EXTENDS FROM 02N107W TO 03N119W. CLUSTERS OF 
SCATTERED MODERATE CONVECTION ARE S OF 6N E OF 80W. ISOLATED 
MODERATE CONVECTION IS FROM 02N TO 07N BETWEEN 86W AND 92W.  

...DISCUSSION... 

IN THE UPPER LEVELS...AN UPPER LEVEL TROUGH IS OVER THE NW 
CORNER N OF 10N AND W OF 130W SUPPORTING A SURFACE TROUGH E OF 
THE HAWAIIAN ISLANDS ALONG 145W. UPPER LEVEL DIFFLUENCE E OF THE 
UPPER LEVEL TROUGH IS PRODUCING OVERCAST HIGH CLOUDS FROM 10N-
22N W OF 130W. ELSEWHERE...A SMALL UPPER LEVEL LOW IS CENTERED 
NEAR 30N128W WITH SOME DIFFLUENCE E OF THE CENTER TO N BAJA 
CALIFORNIA. ANOTHER UPPER LEVEL TROUGH IS ALONG 110W FROM 02N TO 
20N. UPPER LEVEL DIFFLUENCE IS ALSO E OF THIS UPPER LEVEL TROUGH 
AXIS. UPPER LEVEL RIDGING IS E OF 105W. STRONG SUBSIDENCE IS 
OVER MEXICO AND CENTRAL AMERICA.  

ON THE SURFACE...SURFACE RIDGING IS OVER THE NW AREA N OF 15N 
AND W OF 115W. A NEW NW SWELL TRAIN HAS ENTERED THE NW CORNER 
WITH SEAS TO 9 FT. THIS SWELL WILL MOVE E OVER THE NEXT 48 HOURS 
AND REMAIN N OF 25N. ELSEWHERE AN AREA OF 20 KT OR LESS 
TRADEWINDS IS FORECAST FOR FRI AFTERNOON FROM 08N TO 12N BETWEEN 
130W AND 140W WITH SEAS TO 8 FT. 
 
OTHER GAP WINDS...                                               
THE HIGH PRES THAT WILL BUILD BEHIND THE FRONT CURRENTLY PASSING 
ACROSS THE WESTERN GULF OF MEXICO WILL INITIATE FRESH TO STRONG 
GAP WINDS THROUGH THE GULF OF PAPAGAYO FRI MORNING...WITH 
ANOTHER PULSE FRI NIGHT INTO SAT MORNING. SIMILARLY...STRONG 
TRADE WINDS OVER THE SW CARIBBEAN SEA WILL PUSH THROUGH PANAMA 
FRI INTO SAT.

$$
FORMOSA