000
AXPZ20 KNHC 080324
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SAT NOV 08 2008

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.

...ITCZ...

THE INTERTROPICAL CONVERGENCE ZONE AXIS IS ALONG THE LINE... 
07N77W TO 06N100W TO 09N130W TO 07N140W. SCATTERED MODERATE TO 
STRONG CONVECTION IS WITHIN 75 NM OF THE POINT 07.5N138.5W.
 
SCATTERED MODERATE WITHIN 45 NM EITHER SIDE OF LINE FROM 14N113W 
TO 13N131W.

...DISCUSSION...

MIDDLE AND UPPER LEVEL TROUGH WILL BE OVER THE AREA NORTH OF 25N 
THROUGH THE NEXT 48 HOURS. A SHORTWAVE TROUGH EXTENDS ALONG A 
LINE FROM 25N127W TO 20N129W TO 13N140W AND BEYOND. THE 
SHORTWAVE IS MOVING EAST 25 KNOTS. AN ILL DEFINED CYCLONIC 
CIRCULATION CENTER TRAILS THE TROUGH AND LOCATED NEAR 20N135W. 
AHEAD OF THE TROUGH A PLUME OF UPPER LEVEL MOISTURE AND MULTI 
LEVEL BROKEN TO OVERCAST CLOUDS EXTENDS ABOUT 300 NM EAST OF THE 
AXIS. OUTSIDE THE CYCLONIC CIRCULATION CENTER THE ATMOSPHERE IS 
DRY AND CLOUD FREE IN THE MIDDLE AND UPPER LEVELS WEST OF THE 
SHORTWAVE.

REMAINDER OF THE AREA IS A BROAD RIDGE IN THE MIDDLE AND UPPER 
LEVELS. THE AREA SOUTH AND EAST OF A LINE FROM 18N100W TO 
12N115W TO 07N115W TO 05N140W IS DRY AND CLOUD FREE IN THE 
MIDDLE AND UPPER LEVELS EXCEPT FOR SOME UPPER MOISTURE AND 
CLOUDS NORTH OF THE ITCZ EAST OF 95W. OVERCAST STRATOCUMULUS 
CLOUDS ARE SOUTH OF THE ITCZ EAST OF 120W TO 85W.

MODERATE SURFACE RIDGE IS NORTH OF 14N WEST OF 108W. ELSEWHERE A 
BROAD TROUGH IS ANALYZED AT THE SURFACE.

$$
LL