000
AXPZ20 KNHC 121519
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE AXIS IS ALONG THE LINE...6N77W 
8N95W 10N115W 6N140W.  SCATTERED MODERATE TO STRONG CONVECTION 
IS WITHIN 75 NM OF THE POINTS 5.7N77.9W AND 2.5N79.1W. SCATTERED 
MODERATE WITH ISOLATED STRONG CONVECTION IS WITHIN 60 NM OF THE 
POINTS 7.8N94.8W AND 8.1N108.5W.  SCATTERED MODERATE CONVECTION 
IS WITHIN 120 NM OF THE POINT 8.7N121.8W.

...DISCUSSION...
THE SOUTHERN EXTENT OF A LARGE LONGWAVE TROUGH EXTENDS INTO THE 
AREA NORTH OF A LINE FROM 32N116W 22N140W. THERE IS NO WEATHER 
AND ONLY SOME HIGH THIN SCATTERED CLOUDS ASSOCIATED WITH THE 
SYSTEM. BROKEN TO OVERCAST STRATOCUMULUS IS IN THE LOWER LEVELS. 
THIS IS EXPECTED TO CHANGE LITTLE IN THE NEXT 48 HOURS.

REMAINDER OF THE AREA IS COVERED BY WEAK ANTICYCLONIC FLOW. 

WEAK SURFACE RIDGE IS NORTH OF THE ITCZ WEST OF 110W.  REMAINDER 
OF AREA IS ANALYZED AS WEAK TROUGH.

TROUGH IN THE ITCZ NEAR 118W CONTINUES TO CHANGE LITTLE AND 
DRIFT WEST

$$
LL