000
AXPZ20 KNHC 270313
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC THU APR 27 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0300 UTC.

...ITCZ...
ITCZ AXIS ALONG 9N84W  10N91W  5N110W  7N118W  4N140W.  
SCATTERED MODERATE ISOLATED STRONG CONVECTION WITHIN 120 NM OF 
AXIS W OF 115.  ISOLATED MODERATE ISOLATED STRONG CONVECTION 
WITHIN 90 NM N OF AXIS E OF 105W.

...DISCUSSION...
MID/UPPER CYCLONIC VORTEX CENTERED OFF COAST OF SOUTHERN 
CALIFORNIA NEAR 32N119W MOVING SSE 20 KT WITH UPPER LEVEL TROUGH 
AXIS EXTENDING SW TO 6N140W.  UPPER LEVEL CONFLUENT FLOW 
PATTERN CAUSING MODERATE STRONG SUBSIDENCE WITHIN 5 DEGREES 
EITHER SIDE OF AXIS.  SUBTROPICAL JET UP TO 130 KT PARALLELS 
AXIS ON SE SIDE ADVECTING LARGE AMOUNT OF MOISTURE ACROSS BAJA 
CALIFORNIA AND NRN MEXICO REACHING AS FAR AS NW GULF OF MEXICO. 

MID/UPPER LEVEL ANTICYCLONE AT 12N108W DRIFT NE.  MODERATE TO 
STRONG DIFFLUENCE ON ITS SW QUADRANT SUPPORTING DEEP CONVECTION 
ALONG ITCZ FROM 115W TO 120W.

SHARP MID/UPPER LEVEL TROUGH DOWNSTREAM FROM ANTICYCLONE DENTS 
ITS EXTENSION OF YUCATAN PENINSULA TO EQUATOR AND 97W BUT STRONG 
CONFLUENT FLOW ALOFT KEEPS GOOD SUBSIDENCE OVER S HALF OF GULF 
OF MEXICO AND NW CARIBBEAN.  TROPICAL MOISTURE ADVECTED NE 
ACROSS REST OF CARIBBEAN BASIN E OF TROUGH.

ON THE SURFACE...HIGH PRES RIDGE COVERS PACIFIC N OF 10N W OF 
110W.  BRISK TRADES REMAIN W OF 120N FROM 5N TO 20N.

$$
WALLY BARNES