000
AXPZ20 KNHC 081533
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1605 UTC TUE MAY 08 2007

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 
1445 UTC.

...ITCZ...
INTERTROPICAL CONVERGENCE ZONE...6N78W  6N90W  12N118W  7N140W.  
SCATTERED MODERATE TO STRONG WITHIN 120 NM OF 7N101W. 
SCATTERED MODERATE WITHIN 90 NM OF AXIS W OF 130W.

...DISCUSSION...
DEEP LAYERED TROUGH OVER SW CONUS EXTENDS SWD THROUGH WELL 
DEFINED CYCLONIC CIRCULATION AT 33N110W 25N120W 16N140W. JET 
CORE 90 KT ADVECTING TROPICAL MOISTURE ALONG SE FRINGES OF 
TROUGH AXIS INTO SRN TIP OF BAJA CALIFORNIA AND CENTRAL MEXICO.
MID TO UPPER LEVEL ANTICYCLONE CENTER AT 11N97W HAS RIDGE EXTEND 
W TO 132W.  RIDGE FLOW PRODUCING UPPER LEVEL DIFFLUENCE IN ITS 
SRN PERIPHERY ENHANCING EMERGING CONVECTION NEAR 7N101W.

AT SURFACE...WEAK COLD FRONT WELL NW OF BASIN HAS EFFECTIVELY 
ERODED HIGH PRES CENTER RIDGE LITERALLY ABATING TRADES TO LESS 
THAN 20 KT.  CROSS EQUATORIAL S SWELL TRAIN COVER S OF 6N FROM 
100W TO 130W.  ELSEWHERE...WEAK TROUGH WAS INDICATED ALONG ITCZ 
FROM 6N125W NEWD TO 15N121W.  NO SIGNIFICANT CONVECTION 
ASSOCIATED WITH THIS FEATURE.

$$
WALLY BARNES