000
AXPZ20 KNHC 122130
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC SAT MAY 12 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE AXIS 7N77W 9N98W 8N110W 10N118W 
6N140W. SCATTERED MODERATE CONVECTION WITHIN 90 NM OF AXIS BETWEEN 
105W AND 126W. NUMEROUS MODERATE ISOLATED STRONG CONVECTION WITHIN 
60 NM OF 6N80W.

...DISCUSSION...
THE SOUTHERN EXTENT OF A DEEP LONGWAVE TROUGH EXTENDS INTO THE AREA 
NORTH OF A LINE FROM 32N116W 24N140W. THERE IS LITTLE SURFACE WEATHER
ASSOCIATED WITH THIS TROUGH EXCEPT FOR BROKEN/OVERCAST STRATOCUMULUS.

REMAINDER OF THE AREA IS COVERED BY WEAK ANTICYCLONIC FLOW ALOFT. THE
ITCZ CONVECTION IS CONFINED PRIMARILY BETWEEN 90W AND 127W. AN ACTIVE
AREA OF DEEP CONVECTION HAS DEVELOPED OVER THE PAST 6 HOURS E OF 80W 
SOUTH OF PANAMA. 

A WEAK SURFACE RIDGE IS NORTH OF THE ITCZ WEST OF 110W. REMAINDER OF 
AREA IS ANALYZED AS A WEAK TROUGH. THE TROUGH IN THE ITCZ NEAR 119W 
CONTINUES TO CHANGE LITTLE AND DRIFT SLOWLY WEST.

$$
MUNDELL