000
AXPZ20 KNHC 121550
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC FRI APR 12 2013

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.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...             
A MONSOON TROUGH EXTENDS FROM 09N83W TO 05N95W...AND AN ITCZ 
AXIS EXTENDS FROM 08N109W TO 05N122W. ISOLATED AREAS OF MODERATE 
DEEP CONVECTION ARE WITHIN 60 NM OF 04N90W...05N96W...10N111W 
AND 09N115W. 

...DISCUSSION...                                               
GULF OF CALIFORNIA...MODERATE S WINDS EXPECTED IN THE GULF OF 
CALIFORNIA WATERS THROUGH SUN MORNING. SOUTHERLY FLOW SHOULD 
INCREASE TO 15-20 KT N OF 30N SUN THROUGH EARLY TUE. WINDS WILL 
VEER N-NW N OF 28N TUE NIGHT THEN INCREASE TO 20-25 KT WED.

GULF OF TEHUANTEPEC...LIGHT AND VARIABLE SOUTHERLY WINDS ARE 
EXPECTED THROUGH WED.

GULF OF PAPAGAYO...MODERATE TO FRESH ENE WINDS ARE EXPECTED LATE 
NIGHTS AND MORNINGS THROUGH MON NIGHT. AN INCREASING GRADIENT IN 
THE CARIBBEAN WILL RESULT IN ENE 20-30 KT WINDS AROUND SUNRISE 
TUE AND WED...WITH SEAS BUILDING TO 7 FT.  

GULF OF PANAMA...LIGHT N WINDS INCREASING BRIEFLY TO 10-15 KT 
LATE AT NIGHT ARE EXPECTED TO CONTINUE THROUGH WED. 

STRONG HIGH PRES NW OF THE AREA WITH A RIDGE AXIS EXTENDING SE 
INTO THE DISCUSSION AREA FROM 32N136W TO 12N107W. THE GRADIENT 
NE OF THE RIDGE AXIS SUPPORTING FRESH N WINDS N OF 27N BETWEEN 
119W AND 130W...WITH COMBINED SEAS OF 8-11 FT. FRESH E-NE WINDS 
ARE OBSERVED SW OF THE RIDGE FROM 22N TO 27N W OF 130W...WITH 
SEAS TO 9 FT. THIS AREA OF ENHANCED WINDS WILL SHIFT W TONIGHT 
THEN DIMINISH SAT THROUGH SUN.  

LONG PERIOD SWELL WILL CROSS THE EQUATOR BETWEEN 92W AND 105W 
TONIGHT...AND CONTINUE TO PROPAGATE N REACHING ALONG 08N BETWEEN 
81W AND 113W ON SAT...EXCEPT FOR WATERS IMMEDIATELY DOWNSTREAM 
FROM THE GALAPAGOS ISLANDS. SEAS ASSOCIATED WITH AREA OF SWELL 
WILL GRADUALLY SUBSIDE AS IT SPREADS POLEWARD SAT WITH COMBINED 
SEAS AROUND 7 FT REACHING THE COAST OF CENTRAL AMERICA BY SUN. 

$$
MUNDELL