000
AXPZ20 KNHC 240830
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE APR 24 2007

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 
0815 UTC.

...ITCZ...
ITCZ AXIS ALONG 6N77W 8N95W 6N122W 2N138W. SCATTERED MODERATE 
ISOLATED STRONG WITHIN 120 NM N OF AXIS W OF 78W. SCATTERED 
MODERATE ISOLATED STRONG WITHIN 120 NM N OF AXIS BETWEEN 123W 
AND 126W.

...DISCUSSION...
W OF 100W...TROUGH EXTENDS FROM CLOSED UPPER LOW PRES OVER FOUR 
CORNERS AREA IN SW U.S. TO BROAD UPPER LOW NEAR 18N140W. 
HOWEVER...THESE FEATURES APPEAR TO BE DECOUPLING IN RESPONSE TO 
BUILDING UPPER RIDGE ALONG 127W. ASSOCIATED 1026 MB SURFACE HIGH 
IS CENTERED NEAR 25N130W. EVENING QUIKSCAT DATA SHOWED MODERATE 
TO FRESH NE FLOW GENERALLY S OF 20N AND W OF 115W. DIVERGENCE 
ALOFT ASSOCIATED WITH THE UPPER LOW NEAR 18N140W IS ENHANCING 
CONVECTION ALONG THE ITCZ W OF 113W. THE PATTERN GRADUALLY 
BECOMES MORE DEAMPLIFIED OVER NEXT COUPLE OF DAYS AS THE UPPER 
RIDGE PUSHES E OVER BAJA CALIFORNIA AND DAMPENS OUT. MEANWHILE 
THE UPPER LOW NEAR 18N140W OPENS UP AND LIFTS OUT BEHIND THE 
RIDGE THROUGH WED. EARLIER SHIP OBSERVATIONS CONFIRMED MODERATE 
TO LARGE SWELL FROM MAINLY THE NW IS PUSHING INTO THE AREA.

E OF 100W...BROAD UPPER RIDGE IS ORIENTED E-W OVER THE ITCZ 
ALONG 8N E OF 120W. DIVERGENCE ON SW SIDE OF BROAD UPPER TROUGH 
OVER CARIBBEAN IS ENHANCING CONVECTION ALONG THE ITCZ OVER 
COLOMBIA AND GULF OF PANAMA. MEANWHILE...MODERATE FLOW ACROSS 
THE SRN CARIBBEAN IS PUSHING INTO GULF OF PAPAGAYO. THE 
RELATIVELY LIGHT FLOW AND SOMEWHAT NLY TRAJECTORY ACROSS THE 
CARIBBEAN WILL KEEP PAPAGAYO WINDS GENERALLY LESS THAN 20 KT.

$$
CHRISTENSEN