000
AXPZ20 KNHC 242122
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
2205 UTC TUE MAY 24 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
2100 UTC.
 
...ITCZ...
AXIS EXTENDS FROM 05.5N77W TO LOW PRES 1010 MB NEAR 11N97W TO 
LOW PRES 1012 MB NEAR 11N111W TO 05N120W TO 07N130W TO 06N140W. 
SCATTERED MODERATE TO STRING WITHIN 120 NM EITHER SIDE OF AXIS 
BETWEEN 79W AND 82W. SCATTERED MODERATE TO STRONG WITHIN 150 NM 
N AND 30 NM S OF AXIS BETWEEN 104W AND 109W. SCATTERED MODERATE 
WITHIN 90 NM N AND 120 NM S OF AXIS BETWEEN 125W AND 132W. 

...DISCUSSION...
WEAK HIGH PRESSURE 1020 MB IS CENTERED NEAR 30N132W WITH RIDGE 
EXTENDING SE TO 21N115W. THE PRESSURE GRADIENT BETWEEN THE RIDGE 
AND TROUGHING OVER THE GULF OF CALIFORNIA IS PRODUCING FRESH 20 
KT WINDS N OF 24N E OF 116W TO THE BAJA PENINSULA AS INDICATED 
BY AN EARLIER ASCAT PASS. THE PRESSURE GRADIENT BETWEEN THE HIGH 
AND LOWER PRESSURE IN THE VICINITY OF THE ITCZ IS MAINTAINING 
FRESH 20 KT TRADE WINDS FROM 11N TO 22N W OF 130W AS DEPICTED ON 
THE LATEST ASCAT PASS. THIS HIGH WILL DISSIPATE TONIGHT WITH A 
BRIEF DECREASE IN COVERAGE OF FRESH WINDS OFF THE COAST OF THE 
BAJA PENINSULA. STRONGER HIGH PRESSURE WILL BUILD RIGHT BACK IN 
AND REINFORCE THE RIDGE...ONCE AGAIN INCREASING THE COVERAGE OF 
FRESH WINDS OFF THE COAST OF THE BAJA PENINSULA. 

LONG PERIOD S SWELL CURRENTLY AFFECTS THE AREA S OF 05N BETWEEN 
100W AND 120W. THESE SWELLS WILL CONTINUE TO SPREAD FURTHER N 
AND WILL COVER THE AREA S OF 10N W OF 95W BY THURSDAY. 

$$
AL