000
AXPZ20 KNHC 270916
TWDEP 

TROPICAL WEATHER DISCUSSION 
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SUN APR 27 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 
0900 UTC.

...ITCZ...
ITCZ AXIS ALONG 3N77W 7N105W 2N140W. SCATTERED TO STRONG 
MODERATE FROM 04N-07N BETWEEN 125W-129W.

...DISCUSSION...
MID TO UPPER LEVEL RIDGE AXIS EXTENDS FROM A CYCLONIC 
CIRCULATION NEAR 20N135W TO 32N126W. DIFFLUENT SOUTHERLY FLOW 
OVER THE WESTERN HALF OF THE RIDGE AXIS IS SUPPORTING A BROAD 
AREA OF UPPER LEVEL MOISTURE N OF 14N W OF 127W. E OF THE RIDGE 
A MID/UPPER LEVEL TROUGH EXTENDS SSW FROM EASTERN NEW MEXICO 
ACROSS NORTHERN MEXICO TO SOUTHERN BAJA CALIFORNIA TO 10N 120W. 
SUBSIDENCE AND ASSOCIATED DRY CONDITIONS AT THE MID/UPPER LEVELS 
OF THE ATMOSPHERE DOMINATE THE AREA N OF 20N BETWEEN 110W-125W. 
S OF 5N...UPPER DIFFLUENCE IS AIDING THE PRODUCTION OF STRONG 
CONVECTIVE ACTIVITY ALONG THE ITCZ W OF 130W. 

UPPER RIDGE EXTENDS FROM NRN COLOMBIA...OVER COSTA RICA TO 
WESTERN MEXICO NEAR 18N100W. .MID TO UPPER MOISTURE IS BEGINNING 
TO SPILL OVER THE AXIS AND SPREAD OVER HONDURAS/GUATEMALA.  

A 1027 MB HIGH PRES N OF THE AREA NEAR 34N131W WITH RIDGE FROM 
HIGH TO 32N130W TO 18N110W.

$$
DGS