000
AXPZ20 KNHC 290338
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS NATIONAL HURRICANE CENTER MIAMI FL 
0405 UTC SUN DEC 29 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.
 
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...           
MONSOON TROUGH EXTENDS FROM 07N77W TO 08N86W TO 06N90W. ITCZ 
EXTENDS FROM 06N90W TO 10N120W TO 10N125W TO 07N140W. SCATTERED 
MODERATE CONVECTION WITHIN 45 NM OF ITCZ AXIS BETWEEN 102W AND 
124W.

...DISCUSSION...                                               
BROAD SFC RIDGE EXTENDS FROM 35N135W TO 28N132W TO 23N113W. HIGH 
PRESSURE OVER MEXICO IS WEAKENING...RELAXING THE PRES GRADIENT 
OVER SOUTHERN MEXICO SUPPORTING SMALL AREA OF 20-25 KT WINDS N 
OF 15N IN GULF OF TEHUANTEPEC. WINDS WILL CONTINUE TO DIMINISH 
TONIGHT AND SUN WHILE AN AREA OF 8-9 FT SEAS DOWNSTREAM FROM THE 
SOURCE REGION WILL ALSO SHRINK NEXT 12 HOURS AS FORCING WEAKENS. 

WINDS IN THE GULFS OF PAPAGAYO AND PANAMA WILL CONTINUE TO PULSE 
TO AROUND 20 KT LATE NIGHT/EARLY MORNING HOURS THROUGH MON FROM 
FRESH TRADES IN THE SW CARIBBEAN AND DIURNAL EFFECTS. MODEL ALSO 
SHOWS NW WINDS REACHING 20-25 KT IN THE GULF OF CALIFORNIA N OF 
30N SUN AFTERNOON AND EVENING.

LONG PERIOD NW SWELL TO 10 FT WILL REACH THE NW PORTION SUN AND 
SPREAD SOUTHEASTWARD THROUGH TUE WITH SEAS SUBSIDING TO 7-8 FT.

$$
MUNDELL