000
AXPZ20 KNHC 050330
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SUN DEC 5 2010

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

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.

...ITCZ...

INTERTROPICAL CONVERGENCE ZONE AXIS EXTENDS W FROM 08N84W TO 
06N92W TO LOW PRES NEAR 07N101W TO 10N125W TO 08N140W. NO 
SIGNIFICANT CONVECTION.

...DISCUSSION...
WEAKENING COLD FRONT FROM 30N124W TO 27N126W. SAT IMAGERY SHOWS A
1007 MB LOW WITH GALE FORCE WINDS NEAR 33N136W ROTATING THROUGH 
LARGE MID-LEVEL TROUGH CENTERED W OF CALIFORNIA NEAR 36N134W. THE
LOW IS EXPECTED TO BRING 20-30 KT WINDS TO NW PORTION OF THE AREA
N OF 26N. BY SUN NIGHT THE LOW WITH ASSOCIATED WIND AND HIGH SEAS
LIFTS N TOWARD THE CENTRAL CALIFORNIA COAST. ANOTHER COLD FRONT 
WILL APPROACH THE FAR NW PART OF THE AREA MON NIGHT WITH SW WINDS
APPROACHING 30 KT AHEAD OF THE FRONT IN WARM SECTOR. 

FURTHER SOUTH...A 1010 MB LOW PRES CENTERED ALONG THE ITCZ NEAR 
07N101W DRIFTING W LACKS DEEP CONVECTION. SURFACE TROUGH REMAINS 
EMBEDDED WITHIN THE ITCZ ANALYZED FROM 15N122W TO 08N126W. MODELS
SHOW THIS FEATURE PERSISTING WITHIN THE ITCZ DRIFTING W AND WINDS
INCREASING TO 20 KT NW OF THE TROUGH AXIS SUN NIGHT AND MON.

GAP WINDS...
WINDS ARE WELL BELOW GALE FORCE IN THE GULF OF TEHUANTEPEC AREA. 
HOWEVER...HIGH PRESSURE RIDGE OVER SW GULF OF MEXICO AND PORTIONS
OF INTERIOR SOUTHERN MEXICO PERSISTING THROUGH LATE SUN. SURFACE 
PRESSURES BUILD MON FROM A SURGE OF ARCTIC AIR...ALLOWING WINDS 
TO ONCE AGAIN REACH GALE FORCE EARLY MON THROUGH TUE OVER THE 
GULF OF TEHUANTEPEC. WINDS REACH GALE FORCE AROUND 06 UTC MON.  

GAP WINDS FUNNELING THROUGH THE GULF OF PAPAGAYO ARE EXPECTED TO 
CONTINUE OVER THE NEXT 48 HOURS WITH NE WINDS PULSING TO 20 TO 
25 KT AS HIGH PRES BUILDS OVER THE WESTERN CARIBBEAN. WINDS ARE 
NORMALLY GREATEST DURING THE OVERNIGHT AND EARLY MORNING HOURS 
WITH THE ASSISTANCE OF THE NOCTURNAL DRAINAGE FLOW.

$$
MUNDELL