000
AXPZ20 KNHC 200924
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC FRI MAY 20 2011

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...
AXIS ALONG 12N87W TO 13N91W TO 07N104W TO 05N140W WITH SCATTERED 
MODERATE TO STRONG CONVECTION NOTED WITHIN 120 NM OF AXIS 
BETWEEN 100W AND 120W. 

...DISCUSSION...
HIGH PRESSURE 1025 MB IS CENTERED JUST N OF THE AREA NEAR 
34N133W WITH RIDGE EXTENDING SE TO NEAR 14N109W. THE PRESSURE 
GRADIENT BETWEEN THE RIDGE AND LOW PRESSURE OVER THE SW UNITED 
STATES AND MEXICO IS SUPPORTING 20 KT WINDS WITHIN 120 NM OF 
THE WEST COAST OF BAJA CALIFORNIA. ALSO...THE PRESSURE GRADIENT 
BETWEEN THE RIDGE AND LOWER PRESSURE NEAR THE ITCZ IS SUPPORTING 
FRESH 20 KT TRADES FROM 07N TO 14N W OF 133W AS DEPICTED BY THE 
LATEST ASCAT PASS. WITH THE SURFACE RIDGE EXPECTED TO REMAIN 
OVER THE SAME GENERAL AREA OVER THE NEXT FEW DAYS...THE FRESH 20 
KT WINDS ARE EXPECTED TO REMAIN OVER THESE AREAS OVER THE NEXT 
COUPLE OF DAYS. 

SUBSIDING CROSS-EQUATORIAL S TO SW SWELLS WILL CONTINUE TO MOVE 
THROUGH MOST OF EPAC BASIN THROUGH THIS EVENING BEFORE BEING 
REINFORCED BY ANOTHER PULSE OF MODERATE SW SWELL SAT AND SUN. 

$$
AL