000
AXPZ20 KNHC 251517
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE APR 25 2006

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. THE FOLLOWING INFORMATION IS 
BASED ON SATELLITE IMAGERY...WEATHER OBSERVATIONS...RADAR...AND 
METEOROLOGICAL ANALYSIS.

BASED ON 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.

...ITCZ...
ITCZ AXIS IS CENTERED ALONG 8N78W 7N95W 8N115W 2N140W. SCATTERED 
MODERATE TO STRONG CONVECTION FROM 4N TO 8N BETWEEN 85W AND 88W 
AND WITHIN 150 NM S OF THE AXIS FROM 89W TO 96W. SCATTERED 
MODERATE CONVECTION WITHIN 180 NM N OF AXIS BETWEEN 117W AND 
123W.

...DISCUSSION...
SHARP MID/UPPER LEVEL TROUGH IS POSITIVELY TILTED OVER THE AREA 
FROM 32N126W TO 20N140W. A 90-100 KT SUBTROPICAL JET EXTEND FROM 
14N140W TO THE CNTRL BAJA PENINSULA AND NW MEXICO. UPPER 
CONFLUENCE INTO THE BASE OF THE TROUGH IS PRODUCING STRONG 
SUBSIDENCE FROM 14N-23N W OF 130W. WEAK COLD FRONT EXTENDS FROM 
FROM 32N128W TO 25N140W. AN OVERCAST STRATUS DECK IS W OF THE 
FRONT AND ALSO E OF THE FRONT N OF 22N BETWEEN 116W AND 130W.
AN UPPER RIDGE WITH AXIS FROM ANTICYCLONIC CIRCULATION NEAR 
12N112W THEN NE ACROSS MEXICO TO THE TEXAS BIG BEND.

UPPER LEVEL TROUGH EXTENDS FROM THE EASTERN BAY OF CAMPECHE SWD 
ACROSS GUATEMALA INTO THE PACIFIC NEAR 8N94W. THIS FEATURE IS 
PRODUCING AN AREA OF UPPER DIFFLUENCE WITH A STRONG CLUSTER 
OF TSTMS NEAR THE ITCZ BETWEEN 89W-96W. AN AREA OF MODERATE 
SUBSIDENCE ON THE BACK SIDE OF THE TROUGH IS KEEPING SKIES 
GENERALLY CLEAR N OF THE ITCZ BETWEEN 94W-105W.

$$
DGS