000
AXPZ20 KNHC 060916
TWDEP 

TROPICAL WEATHER DISCUSSION
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC TUE MAY 06 2008

TROPICAL WEATHER DISCUSSION FOR THE EASTERN PACIFIC OCEAN FROM 
THE EQUATOR TO 32N...EAST OF 140W. 

BASED ON 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0830 UTC.

...ITCZ...

INTERTROPICAL CONVERGENCE ZONE IS ALONG THE LINE...6N77W TO 
5N84W TO 8N114W TO 5N124W TO 5N140W. CLUSTERS OF SCATTERED 
MODERATE TO ISOLATED STRONG CONVECTION ARE WITHIN 200 NM OF THE 
ITCZ AXIS FROM 112W TO 130W. SMALL CLUSTERS OF SCATTERED 
MODERATE CONVECTION ARE WITHIN 150/180 NM OF THE ITCZ AXIS FROM 
97W TO 114W. 

...DISCUSSION...
W OF 110W...
AN UPPER LOW IS ALONG THE COAST OF N BAJA PENINSULA NEAR 32N116W 
DRIFTING S. A SECOND UPPER LOW IS E OF THE HAWAII ISLANDS NEAR 
21N139W DRIFTING SW. THESE LOWS ARE BECOMING CUT OFF FROM THE 
UPPER TROUGH THAT COVERS THE NW PORTION OF THE REGION. STRONG 
UPPER SW FLOW IS S OF THE UPPER TROUGH. AN UPPER RIDGE SW OF THE 
REGION COVERS THE AREA S OF 15N W OF 125W AND IS OVERRUNNING THE 
ITCZ CONVECTION. THE BLOW OFF FROM THIS CONVECTION IS THEN 
SHEAR BY THE UPPER SW FLOW AND COUPLED WITH THE NE LOW LEVEL 
FLOW IS GENERATING A BROAD AREA OF DENSE CLOUDS WITH EMBEDDED 
SHOWERS FROM THE ITCZ TO 20N BETWEEN 115W TO 135W. A SURFACE 
RIDGE COVERS THIS AREA WITH THE AXIS EXTENDING THROUGH 32N135W 
TO 20N115W. 

E 0F 110W...
AN UPPER LEVEL LOW IS EMBEDDED OVER THE ITCZ NEAR 8N103W 
ENHANCING CONVECTION DESCRIBED IN THE ITCZ SECTION. AN UPPER 
RIDGE EXTENDS FROM THE W COAST OF COLOMBIA ALONG THE COAST OF 
CENTRAL AMERICA TO THE GULF OF TEHUANTEPEC WITH SOMEWHAT DRY AIR 
KEEPING THE ITCZ E OF 95W CONVECTION FREE. 

$$
WALLACE