000
AXPZ20 KNHC 270414
TWDEP 

TROPICAL WEATHER DISCUSSION     
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC TUE FEB 27 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0345 UTC.

...ITCZ...
ITCZ AXIS ALONG  3N78W  5N85W  4N100W  6N110W  5N135W  4N140W.  
SCATTERED MODERATE ISOLATED STRONG WITHIN 90 NM EITHER SIDE OF 
AXIS FROM 123W TO 135W.

...DISCUSSION...
WELL-DEFINED MID/UPPER LEVEL LONGWAVE TROUGH EXTEND FROM 32N140W 
TO 6N154W...JUST W OF FORECAST WATERS...BUT WITH INTENTIONS OF 
ENTERING E PAC BRINGING PLENTY OF MOISTURE UNDER 130 KT JET CORE.
FLOW BECOMES QUASI-ZONAL N OF 20N AS ANTICYCLONE CENTERED AT 
7N115W FLATTENS CREST UNDER PRES FROM TROUGH.  

MOISTURE KEPT MAINLY N OF 17N AS MODERATE SUBSIDENCE UNDER 
ANTICYCLONIC CENTER KEEPS SOUTHEASTERNMOST CORNER OF E PAC DRY.
WEAK UPPER TROUGH E OF RIDGE CENTER...FROM EL SALVADOR TO NW 
ECUADOR...WITH DIFFLUENT FLOW ALOFT ENHANCES MINOR CONVECTION 
ALONG ITCZ.  

...AT THE SURFACE...
HIGH PRES CENTER WELL NW OF E PAC MAINTAINS STEADY STRONG TRADE 
WIND FLOW AND BRISK N WIND ALONG COASTAL SECTIONS OF CALIFORNIA 
ALL THE WAY DOWN INTO SRN BAJA.  

...GAP WINDS...
NE-E GULF OF PAPAGAYO WINDS EXPECTED TO INCREASE WITHIN NEXT 36 
HRS AS LOW PRES OVER COLOMBIA DEEPENS AND TIGHTENS GRADIENT OVER 
SW CARIBBEAN. 

$$
WALLY BARNES