000
AXPZ20 KNHC 211030
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE NOV 21 2006

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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...ITCZ...
AXIS 6N77W  14N108W  6W140W.  SCATTERED MODERATE ISOLATED STRONG 
WITHIN 45 NM OF AXIS E OF 104W.  NUMEROUS MODERATE ISOLATED STRONG 
WITHIN 90 NM OF 11N116W AND 60 NM OF 8N129W. 

...DISCUSSION...
MID/UPPER LEVEL CYCLONIC VORTEX AT 27N122W WITH TROUGH EXTENDING SW 
TO 12N131W TO 10N140W.  TROUGH AXIS BOUND BY DRY STABLE AIR MASS 
WITHIN 180 NM.  SW SHEAR EVIDENT FROM CLOUD TOPS WITHIN ITCZ AND 
ADVERSE EFFECTS ON VARIOUS LOW PRES CENTERS NEAR 7N93W 15N110W AND 
12N117W.  BROAD UPPER RIDGE OVER CENTRAL AMERICA MAINTAINS 
ANTICYCLONIC UPPER LEVEL FLOW E OF 120W...ADVECTING ABUNDANT 
TROPICAL MOISTURE ACROSS SE MEXICO INTO SRN BAY OF CAMPECHE. 

WEAK STATIONARY FRONT FROM 30N130W TO 27N140W WILL SPREAD LARGE NW 
SWELLS THROUGH NW PART OF E PAC BASIN NEXT 48 HRS.  STORM WARNING 
REMAINS IN EFFECT FOR GULF OF TEHUANTEPEC AND AREA TO ITS SW.  IT IS 
EXPECTED TO REMAIN FOR 24-36 HRS BEFORE ABATING TO GALE FORCE FOR 
ANOTHER 24-36 HRS.  SEAS BUILD UP TO 23 FT. 

$$
WALLY BARNES