000
AXPZ20 KNHC 020451
TWDEP 

TROPICAL WEATHER DISCUSSION  
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC WED MAR 01 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0315 UTC.

...ITCZ...
ITCZ AXIS ALONG  5N77W  3N90W 1N103W  3N123W  1N140W. 
NO SIGNIFICANT DEEP CONVECTION.
 
...DISCUSSION...
VERY BROAD LONGWAVE TROUGH COVERS E PAC N OF 20N ALONG 128W WITH 
EMBEDDED SHORTWAVE TROUGH APPROACHING S CALIFORNIA.  VERY DRY 
AIR MASS AT BASE OF SHORTWAVE N OF 30N BUT MARKED DIFFLUENT FLOW 
OVER BAJA CALIFORNIA AND NWRN MEXICO BRINGS ABUNDANT UPPER 
MOISTURE INTO LAND AREAS.  DOWNSTREAM...WEAK SHARP RIDGE ALONG 
104W DRIES OUT AIR ALOFT S OF 22N E OF ITS AXIS AND STRONG UPPER 
LEVEL CYCLONIC VORTEX OVER SWRN GULF OF MEXICO EXTEND DRY AIR 
MASS OVER REMAINDER ALTHOUGH NOT AS DRY AS YESTERDAY.  FEW 
POCKETS OF LOCAL MOISTURE OBSERVED OVER CENTRAL AMERICA MOVING 
IN FROM CARIBBEAN BASIN.  OVER TROPICAL AREA...MODERATE ZONAL 
MID/UPPER LEVEL FLOW S OF 20N W OF 110W.  AT THE SURFACE...HIGH 
PRES COVERS ENTIRE NW PORTION OF AREA N OF 10N W OF 115W.  
TRADES HAVE BEEN INCREASING IN STRENGTH AND LARGE SWELL FROM 
LAST STRONG LOW PRES CENTER STILL LINGER N OF 10N W OF 120W.  

GAP WINDS...GULFS OF PAPAGAYO AND FONSECA WINDS HAVE ABATED BUT 
LIKELY CONTINUED AT A TONED DOWN STRENGTH WITH SWELL PROPAGATING 
W ALONG A 5 DEG SWATH AXIS AT 10N.

$$
WALLY BARNES