000
AXPZ20 KNHC 250334
TWDEP 

TROPICAL WEATHER DISCUSSION      
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC WED MAR 25 2009

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...

ITCZ AXIS IS CENTERED ALONG 07N78W TO 05N88W TO 02N103W TO 
01N118W TO 05N130W TO 05N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION IS LOCATED WITHIN 90 NM S AND 300 NM N OF THE 
AXIS W OF 130W. 

...DISCUSSION...

W OF 110W...
AN ELONGATED MIDDLE/UPPER LEVEL TROUGH HAS ITS AXIS STRETCHING 
ALONG A LINE THROUGH 32N128W TO BEYOND 28N140W. 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 24N145W. 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 20N133W TO 26N120W AND ACROSS CENTRAL BAJA 
CALIFORNIA. WINDS ARE STRONGEST W OF 125W AND MEASURE UP TO 80 
KNOTS ACCORDING TO SATELLITE CLOUD DRIFT WINDS. OVERCAST 
MIDDLE/UPPER LEVEL CLOUDS ARE LOCATED WITHIN 200 NM EITHER SIDE 
OF A LINE FROM 19N128W TO 06N130W. MODERATE WESTERLY FLOW ALOFT 
COVERS THE DEEP TROPICS S OF 05N TO THE EQUATOR. AT THE SURFACE 
A RIDGE EXTENDS FROM A 1039 MB HIGH CENTERED NEAR 37N141W 
THROUGH 30N135W TO 25N123W TO 20N110W. OVER THE AREA N OF 08N W 
OF 120W N TO NE WINDS ARE 20 TO 25 KT AND SEAS TO 14 FT IN MIXED 
NW AND NE SWELL. OVER THE AREA N OF 22N E OF 120W NW TO N WINDS 
ARE 20 KT AND SEAS TO 11 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 09N 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 TO E 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