000
AXPZ20 KNHC 301614
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE OCT 30 2007

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY
THROUGH 1515 UTC.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE...9N85W 7N90W 7N110W 11N128W 
8N140W.  SCATTERED MODERATE ISOLATED STRONG FROM 10N TO 12N 
BETWEEN 85W AND 87W.  SCATTERED MODERATE WITHIN 30 NM RADIUS OF 
8N113W...AND OF 8N118W.

...CONVECTION VALID 1515 UTC TUE OCT 30...
SCATTERED MODERATE FROM 12N TO 14N BETWEEN 123W AND 129W. 

...DISCUSSION...
IN THE TROPICS THE ITCZ IS NOT VERY ACTIVE WITH CONVECTION.  SEE 
ABOVE.  A SURFACE TROUGH IS ALONG 129W FROM 8N TO 16N PRODUCING  
SCATTERED MODERATE FROM 12N TO 14N BETWEEN 123W AND 129W.  

A 1028 MB HIGH IS N OF THE AREA NEAR 34N140W.  A SURFACE RIDGE 
AXIS EXTENDS SW TO NEAR BAJA CALIFORNIA AT 23N115W.  

GAP WINDS ARE PRODUCING GALE WINDS OVER THE GULF OF TEHUANTEPEC 
AND S OF THE GULF TO 13N.  THE AREA IS FORECAST TO CONTINUE FOR 
THE NEXT 36 HOURS...WITH WINDS BELOW GALE CONDITIONS AFTER 36 
HOURS.  

IN THE UPPER LEVELS...AN UPPER LEVEL LOW IS CENTERED NEAR 
22N138W.  CYCLONIC WINDS ARE N OF 12N AND W OF 132W WITH STRONG 
SUBSIDENCE.  AN UPPER LEVEL HIGH IS CENTERED NEAR 25N120W.  
ANTICYCLONIC FLOW IS FROM 15N TO 35N BETWEEN 110W AND 130W. 
FURTHER E...A VERY LARGE UPPER LEVEL HIGH IS CENTERED OVER THE 
NW CARIBBEAN SEA PRODUCING SELY UPPER LEVEL FLOW N OF THE 
EQUATOR TO CENTRAL AMERICA...E OF 110W...WITH VERY STRONG 
SUBSIDENCE.      

$$
FORMOSA