000
AXPZ20 KNHC 200930
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT NOV 20 2010

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W.

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...ITCZ...
THE INTERTROPICAL CONVERGENCE ZONE AXIS EXTENDS FROM 12N87W TO 
13N115W TO 10N122W TO 09N140W. SCATTERED MODERATE CONVECTION 
WITHIN 60 NM OF AXIS BETWEEN 115W AND 120W. SCATTERED MODERATE 
CONVECTION WITHIN 45 NM OF 12N91W.

...DISCUSSION...
A WEAK 1020 MB SURFACE HIGH NEAR 25N127W WILL DISSIPATE OVER THE 
NEXT 12 HOURS AS A COLD FRONT ENTERS THE AREA. 20 TO 25 KT N TO 
NE WINDS ARE EXPECTED BEHIND THE FRONT THROUGH THIS AFTERNOON 
ALONG WITH NW SWELL WITH SEAS UP TO 11 FT. A NEW SURGE OF SWELL 
WILL ENTER THE FORECAST AREA SUN MORNING WITH SEAS TO 14 FT. HIGH
PRES BUILDING N OF THE AREA WILL INCREASE WINDS AND SEAS N OF 20N
AND W OF 130W SUN AND MON.

GAP WINDS...
GALE WARNING WILL REMAIN IN EFFECT FOR THE GULF OF TEHUANTEPEC 
ANOTHER 6 HOURS OR SO. DIURNAL DRAINAGE FLOW IS EXPECTED TO KEEP 
WINDS 25 TO 35 KT THIS MORNING THEN WEAKEN BELOW GALE FORCE BY 
THIS AFTERNOON.

FRESH TO STRONG WINDS OVER THE WESTERN CARIBBEAN WILL FUNNEL 
THROUGH THE CENTRAL AMERICA PASSES...BRINGING FRESH WINDS INTO 
THE GULF OF PAPAGAYO. WINDS WILL PULSE WITH THE STRONGEST WINDS 
DURING THE OVERNIGHT AND EARLY MORNING HOURS WITH THE AID OF 
NOCTURNAL DRAINAGE FLOW OFF THE MOUNTAINOUS TERRAIN. 

$$
MUNDELL