000
AXPZ20 KNHC 090920
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC MON FEB 09 2009

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

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...ITCZ...
THE INTERTROPICAL CONVERGENCE ZONE IS ALONG THE LINE FROM 
02N77W TO 01N95W TO 04N110W TO 07N140W. SCATTERED MODERATE 
CONVECTION IS WITHIN THE AREA FROM 04N TO 06N BETWEEN 116W AND 
118W. SCATTERED MODERATE CONVECTION IS WITHIN THE AREA FROM 
05.5N TO 07.5N BETWEEN 126W AND 133W. SCATTERED MODERATE 
CONVECTION IS WITHIN THE AREA FROM 05N TO 08N W OF 138W.

...DISCUSSION...
LONGWAVE TROUGH WILL BE OVER THE AREA NORTH OF 20N THROUGH 48 
HOURS. A STRONG SHORTWAVE IS MOVING THROUGH THE TROUGH AND IS 
OVER NORTHERN MEXICO. THE SHORTWAVE WILL BE ABSORBED IN THE 
TROUGH WITHIN 24 HOURS. ANOTHER SHORTWAVE WILL MOVE SOUTHEAST TO 
OVER NORTHERN MEXICO IN 48 HOURS. LITTLE WEATHER IS NOTED WITH 
THE LONGWAVE TROUGH OR THE SHORTWAVE TROUGH SOUTH OF 32N.

BROAD RIDGE IS SOUTH OF 20N.

THE AREA SOUTH OF 12N E OF 115W IS MOSTLY DRY AND CLOUD FREE IN 
THE MIDDLE AND UPPER LEVELS.  ELSEWHERE THE MIDDLE AND UPPER 
LEVELS ARE MOIST WITH SOME BROKEN HIGH CLOUDS WEST OF 135W AND 
FROM 20N TO 27N W OF 120W.

MODERATE SURFACE RIDGE IS NORTH OF 12N WEST OF 103W. ELSEWHERE 
AT THE SURFACE A BROAD TROUGH IS ANALYZED.

GAP WINDS HAVE ENDED IN THE GULF OF TEHUANTEPEC REGION. GAP 
WINDS OF 20 TO 30 KT WILL PERSIST IN THE GULF OF PAPAGAYO REGION 
THROUGH 36 HOURS THEN SLOWLY DIMINISH. GAP WINDS IN THE GULF OF 
PANAMA OF 20 KNOTS WILL PERSIST THROUGH 24 HOURS THEN DIMINISH 
TO LESS THAN 20 KT IN ABOUT 42 HOURS.

$$
LL