000
AXPZ20 KNHC 140925
TWDEP 

TROPICAL WEATHER DISCUSSION                                     
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC SAT MAR 14 2015

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. 
 
...SPECIAL FEATURES...

GULF OF TEHUANTEPEC GALE WARNING...HIGH PRESSURE CENTERED OVER 
THE WESTERN GULF OF MEXICO IS SUPPORTING A SMALL AREA OF FRESH 
TO STRONG WINDS FUNNELING THROUGH THE CHIVELA PASS INTO THE GULF 
OF TEHUANTEPEC...WHICH WILL PERSIST THROUGH SUN. A COLD FRONT IN 
THE GULF OF MEXICO WILL REACH WESTERN BAY OF CAMPECHE SUN...WITH 
WINDS INCREASING TO GALE FORCE SUN NIGHT. 

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
            
THE MONSOON TROUGH EXTENDS FROM 09N85W TO 04N90W TO 05N99W. ITCZ 
EXTENDS FROM 05N99W TO 07N114W TO 05N131W TO 06N140W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION IS WITHIN 90 NM EITHER SIDE 
OF THE CONVERGENCE ZONE AXIS BETWEEN 87W AND 116W.

...DISCUSSION... 

HIGH PRESSURE CENTERED N OF THE AREA NEAR 33N127W EXTENDS RIDGE 
SOUTHWARD TO NEAR 15N W OF 115W. PRESSURE GRADIENT BETWEEN THE 
RIDGE AND LOWER PRESSURE NEAR THE ITCZ IS MAINTAINING MODERATE 
TO FRESH TRADES N OF THE ITCZ...WITH A SMALL AREA OF SEAS TO 8 
FT FROM FROM 11N TO 13N W OF 132W. THE AREA OF HIGH PRESSURE 
WILL WEAKEN THIS MORNING AND RELAX THE PRES GRADIENT TO DIMINISH 
THE TRADES...WITH SEAS EXPECTED TO SUBSIDE BELOW 8 FT TODAY. 

NW SWELLS MOVING INTO NW WATERS WILL GRADUALLY SUBSIDE TODAY. A 
COLD FRONT WILL MOVE INTO NW WATERS TONIGHT AND BUMP SEAS UP TO 
8-10 FT N OF 11N W OF 135W BY EARLY SUN...THEN SUBSIDE SUN NIGHT.

GULF OF PAPAGAYO...HIGH PRES N OF THE AREA COMBINED WITH LOWER 
PRESSURES IN THE MONSOON TROUGH SUPPORTING FRESH TO OCCASIONALLY 
STRONG WINDS INTO GULF OF PAPAGAYO...WITH CONDITIONS CONTINUING 
THROUGH MON MORNING. WINDS WILL BE STRONGEST DURING LATE NIGHT 
AND EARLY MORNING HOURS.

$$
MUNDELL