000
AXPZ20 KNHC 060327
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SAT MAY 06 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 
0315 UTC.

...ITCZ...

ITCZ AXIS IS CENTERED ALONG 8N77W 6N86W 11N115W 6N140W. 
SCATTERED MODERATE/STRONG WITHIN 120 NM OF THE AXIS BETWEEN 
84W-94W. SCATTERED MODERATE FROM 9N-14N BETWEEN 106W-124W. 
SCATTERED MODERATE WITHIN 60 NM OF LINE 6N120W 4N127W. 

...DISCUSSION...

W OF 110W...
MID/UPPER LEVEL SHEAR AXIS OVER THE EXTREME NW PART OF THE AREA 
IS ALONG 30N131W 27N140W AS A CUT-OFF LOW DEVELOPS W OF THE AREA 
NEAR THE HAWAIIAN ISLANDS AND DETACHES FROM A MID-LATITUDE 
TROUGH OFF THE W COAST OF THE US. THE UPPER FLOW S OF HAWAII IS 
ZONAL BUT THEN SPLITS NEAR 137W WITH THE FLOW S OF 10N TURNING 
SE TOWARDS THE EQUATOR...AND THE REMAINDER CURVING NE TOWARDS 
THE BAJA PENINSULA AND CNTRL MEXICO. THE DIFFLUENCE RESULTING 
FROM THE SPLITTING FLOW...AS WELL AS AN UPPER RIDGE ALONG 
15N...IS ENHANCING ITCZ CONVECTION BETWEEN 106W-130W WITH THE 
CIRRUS DEBRIS HEADING TOWARDS THE W MEXICAN COAST. THE ITCZ IS 
ALSO BECOMING INCREASINGLY PERTURBED IN THIS REGION WITH A LOW/ 
MID-LEVEL TROUGH LOCATED ALONG 8N118W 13N113W. THE CONVECTION 
AROUND THIS FEATURE REMAINS DISORGANIZED AND HAS DISSOLVED OVER 
THE PAST FEW HOURS...BUT THERE IS MORE MID-LEVEL ROTATION IN THE 
CLOUD SYSTEM AS COMPARED TO YESTERDAY. A SECOND TROUGH IS 
LOCATED WITHIN THE ITCZ ALONG 128W BUT IT HAS VERY LITTLE 
STRUCTURE.

E OF 110W...
MID/UPPER LEVEL HIGH IS CENTERED JUST S OF ACAPULCO MEXICO NEAR 
15N100W WITH A RELATIVELY SMALL AREA OF WEAK/MODERATE SUBSIDENCE 
EXTENDING FROM 13N-20N E OF 107W...STRONGEST OVER THE GULF OF 
TEHUANTEPEC. UPPER LEVEL ELY FLOW AND DEEPER TROPICAL MOISTURE 
LIE S OF THE HIGH TO THE EQUATOR...WITH THE EXCEPTION OF STRONG 
SUBSIDENCE/LESS MOISTURE S OF 4N. AN UPPER RIDGE AXIS EXTENDING 
FROM NRN VENEZUELA WWD TO COSTA RICA AND ITS ASSOCIATED 
DIFFLUENCE IS PROMOTING CONVECTION ALONG THE ITCZ E OF 94W...AND 
HAS ALSO SHIFTED WIDELY SCATTERED SHOWERS/TSTMS NWD OVER PANAMA. 
A LARGE CLUSTER OF NUMEROUS STRONG CONVECTION HAS ALSO BLOSSOMED 
OVER NW COLOMBIA WITH A FEW RENEGADE TSTMS SPILLING OVER INTO 
THE E PACIFIC WATERS N OF 5N E OF 79W.

$$
BERG