000
AXPZ20 KNHC 250929
TWDEP 

TROPICAL WEATHER DISCUSSION      
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC WED MAR 25 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...

ITCZ AXIS IS CENTERED ALONG 05N77W TO 03N84W TO 04N90W TO 
01N110W TO 03N125W TO 05N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION IS LOCATED WITHIN 60 NM EITHER SIDE OF A LINE 
FROM 07N135W TO 06N140W.

...DISCUSSION...

W OF 110W...
AN ELONGATED MIDDLE/UPPER LEVEL TROUGH HAS ITS AXIS STRETCHING 
ALONG A LINE THROUGH 32N128W TO BEYOND 27N140W. THIS FEATURE IS 
FORECAST TO SHIFT E OVER THE NEXT 24 TO 48 HOURS AS A MIDDLE/ 
UPPER LEVEL CYCLONIC CIRCULATION FORMS W OF THE DISCUSSION AREA 
BOUNDARY IN THE VICINITY OF 23N145W. A LARGE AREA OF 
SOUTHWESTERLY TO WESTERLY WINDS ALOFT ARE LOCATED S OF THE 
TROUGH TO ABOUT 05N. A JET STREAM HAS ITS AXIS EXTENDING THROUGH 
13N140W TO 22N130W TO 25N120W AND ACROSS CENTRAL BAJA 
CALIFORNIA. WINDS ARE STRONGEST W OF 125W AND MEASURE UP TO 90 
KNOTS ACCORDING TO SATELLITE CLOUD DRIFT WINDS. OVERCAST 
MIDDLE/UPPER LEVEL CLOUDS ARE LOCATED FROM 08N TO 16N BETWEEN 
126W AND 132W. MODERATE WESTERLY FLOW ALOFT COVERS THE DEEP 
TROPICS S OF 05N TO THE EQUATOR. AT THE SURFACE A RIDGE EXTENDS 
FROM A STATIONARY 1039 MB HIGH CENTERED NEAR 37N142W THROUGH 
30N132W TO 21N116W. OVER THE AREA N OF 08N W OF 123W N TO NE 
WINDS ARE 20 TO 25 KT AND SEAS 9 TO 14 FT IN N AND NE SWELL. 
OVER THE AREA N OF 23N BETWEEN 114W AND 123W NW TO N WINDS ARE 
20 TO 25 KT AND SEAS 9 TO 14 FT IN NW SWELL.  

E OF 110W...
WATER VAPOR IMAGERY INDICATES STRONG SUBSIDENCE COVERS THE AREA 
E OF 110W AND IS MOST PRONOUNCED N OF 08N E OF 102W INTO CENTRAL 
AMERICA. MODERATE WESTERLY WINDS ALOFT ARE LOCATED S OF 09N TO 
NEAR THE EQUATOR E OF 90W. AT THE SURFACE NE WINDS TO 20 KT ARE 
LOCATED OVER THE GULF OF PAPAGAYO. ALSO N WINDS TO 20 KT ARE 
LOCATED OVER THE GULF OF PANAMA. 

$$
CAB