000
AXPZ20 KNHC 300335
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC MON MAY 30 2011

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 
0245 UTC.
 
...ITCZ...
AXIS IS ANALYZED FROM 10N85W TO 10N92W TO 12N99W TO LOW PRES 
1006 MB NEAR 10.5N102W TO 09N106W TO 07N138W WITH SCATTERED 
MODERATE CONVECTION NOTED WITHIN 60 NM N AND 120 NM S OF AXIS 
BETWEEN 116W AND 120W.  

...DISCUSSION...
HIGH PRES CENTER 1036 MB CENTERED WELL NW OF BASIN NEAR 37N151W 
HAS RIDGE EXTENDING SE TO NEAR 20N111W. THE PRESSURE GRADIENT 
BETWEEN THE RIDGE AND TROUGH OF LOW PRESSURE OVER THE BAJA 
PENINSULA AND LOWER PRESSURE NEAR THE ITCZ IS MAINTAINING FRESH 
TO STRONG NW TO N WINDS N OF 20N BETWEEN 110W AND 121W AND FRESH 
N TO NE WINDS N OF 18N W OF 121W AS INDICATED BY THE MOST RECENT 
ASCAT PASS. 

SURFACE LOW PRESSURE 1006 MB IS CENTERED NEAR 10.5N102W. THERE 
IS SCATTERED MODERATE TO ISOLATED STRONG CONVECTION WITHIN 180 
NM OF THE CENTER. FURTHER DEVELOPMENT OF THIS FEATURE...IF 
ANY...WILL BE SLOW TO OCCUR.

OTHERWISE...LARGE LONG PERIOD SOUTHERLY SWELLS WITH SEAS OF 8 TO 
12 FT ARE PROPAGATING ACROSS THE ENTIRE AREA EXCEPT FOR THE GULF 
OF CALIFORNIA. UNUSUALLY HIGH BREAKERS AND HEAVY SURF IS 
EXPECTED ACROSS THE ENTIRE CENTRAL AMERICAN PACIFIC COAST.

$$
AL