000
AXPZ20 KNHC 160225
TWDEP 

TROPICAL WEATHER DISCUSSION                                     
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
0405 UTC MON MAR 16 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0225 UTC. 
 
...SPECIAL FEATURES...

GULF OF TEHUANTEPEC GALE WARNING...HIGH PRESSURE OVER THE 
COASTAL PLAIN OF MEXICO COMBINED WITH SURFACE TROUGH OVER SW 
MEXICO IS MAINTAINING A TIGHT PRESSURE GRADIENT OVER THE SW GULF 
WATERS INTO THE GULF OF TEHUANTEPEC. WINDS FUNNELING THROUGH THE 
CHIVELA PASS INTO THE GULF OF TEHUANTEPEC HAVE INCREASED TO 
MINIMAL GALE FORCE. THE GALE FORCE WINDS WILL CONTINUE THROUGH 
TUE MORNING AND SEAS WILL REACH AS HIGH AS 13 FT BY MON MORNING 
WITH THIS GALE WIND EVENT. WINDS AND SEAS WILL RAPIDLY DECREASE 
ON TUE AND WILL FALL BELOW ADVISORY CRITERIA BY TUE EVENING.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
            
THE MONSOON TROUGH EXTENDS FROM 08N84W TO 06N92W TO 07N107W TO 
05N123W TO 07N133W TO 06N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION WAS NOTED WITHIN 60 NM S OF THE MONSOON TROUGH 
BETWEEN 86W AND 90W. SCATTERED MODERATE CONVECTION WAS NOTED 
WITHIN 60 NM OF THE MONSOON TROUGH BETWEEN 120W AND 125W.

...DISCUSSION... 

A SHARP UPPER LEVEL TROUGH EXTENDS FROM AN UPPER LOW CENTERED 
NEAR 23N110W. THIS TROUGH HAS HELPED INDUCE A SURFACE TROUGH 
EXTENDING FROM NEAR 18N105W TO 10N105W. A LARGE AREA OF NUMEROUS 
MODERATE TO SCATTERED STRONG CONVECTION IS NOTED E OF THE 
TROUGH. 

NW SWELLS CONTINUE TO PROPAGATE OVER THE FAR WESTERN WATERS. 
SEAS TO 9 FT ARE FOUND FROM 06N TO 18N W OF 135W. THE SWELL OVER 
THE WESTERN WATERS WILL SUBSIDE OVER THE NEXT DAY AND FALL BELOW 
ADVISORY CRITERIA BY MON NIGHT. A NEW SET OF NW SWELLS WILL 
REACH THE FAR NW WATERS WITH SEAS REACHING 8 FT OVER THIS AREA 
BY TUE AFTERNOON. THIS WILL BE A BRIEF INCREASE IN SEAS AS 
THEY ARE EXPECTED TO SUBSIDE BELOW 8 FT BY LATE TUE NIGHT. 

GAP WINDS...                                                     
GULF OF PAPAGAYO...WINDS WILL CONTINUE TO PULSE OVER THE GULF OF 
PAPAGAYO OVER THE NEXT COUPLE OF DAYS. WINDS WILL PEAK DURING THE 
LATE NIGHT AND EARLY MORNING HOURS WITH THE ASSISTANCE OF 
NOCTURNAL DRAINAGE FLOW...AND WILL WEAKEN DURING THE AFTERNOON 
AND EARLY EVENING HOURS. 

$$
AL