000
AXPZ20 KNHC 270342
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SUN MAY 27 2007

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.

...SPECIAL FEATURES...
TROPICAL DEPRESSION ONE-E HAS FORMED NEAR 12.6N 110.8W WITH AN 
ESTIMATED PRES OF 1006 MB. CONVECTION HAS CONTINUED TO PULSE 
AROUND THIS SYSTEM...AND IT LOOKS BETTER ORGANIZED ON VISIBLE 
AND MICROWAVE SATELLITE IMAGERY. UPPER LEVEL DIVERGENCE ALOFT 
CONTINUES ALONG WITH LITTLE TO NO DEEP LAYER...PROVIDING 
FAVORABLE CONDITIONS FOR FURTHER DEVELOPMENT OVER THE NEXT 
SEVERAL DAYS AS THE SYSTEM MAKES SLOW WESTWARD MOVEMENT.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE AXIS...13N88W 11N100W 13N111W 
6N125W 7N140W. SCATTERED MODERATE TO ISOLATED STRONG WITHIN 180 
NM OF AXIS BETWEEN 90W AND 110W...AND WITHIN 60 NM OF AXIS 
BETWEEN 115W AND 120W.  

...DISCUSSION...
THE UPPER TROUGH EXTENDS FROM UPPER LOW CENTERED OVER W TEXAS 
THROUGH SRN BAJA PENINSULA TO NEAR 19N110W. MID TO UPPER LEVEL 
DRY AIR IS ADVECTING DOWN THE W SIDE OF THE TROUGH. S OF THE 
TROUGH...UPPER LEVEL ANTICYCLONE EXTENDING ROUGHLY ALONG 15N IS 
PROVIDING DECENT DIVERGENCE ALOFT AND IS ENHANCING 
AFOREMENTIONED CONVECTION ALONG THE ITCZ. AT THE SURFACE...SHIP 
AND QUIKSCAT DATA SHOW MODERATE TO FRESH CROSS-EQUATORIAL SLY 
FLOW S OF THE ITCZ. 

FURTHER W...UPPER LEVEL RIDGE AXIS EXTENDS NE TO NRN BAJA FROM 
ANTICYCLONE CENTERED NEAR 15N129W. UPPER TROUGH EXTENDS FROM 
30N125W TO STATIONARY UPPER LOW NEAR 21N145W. AT THE 
SURFACE...1028 MB HIGH PRES IS CENTERED NEAR 31N145W. SHIP 
OBSERVATIONS INDICATED SOME TRADE WIND FLOW UP TO 20 KT N OF 20N 
W OF 130W...BUT WITH GENERALLY MODERATE TRADES ELSEWHERE N OF 
THE ITCZ. 

$$
CHRISTENSEN