000
AXPZ20 KNHC 070351
TWDEP 

TROPICAL WEATHER DISCUSSION   
NWS NATIONAL HURRICANE CENTER MIAMI FL
0405 UTC SAT MAY 07 2011

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

BASED ON 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0245 UTC.

...ITCZ...

THE INTERTROPICAL CONVERGENCE ZONE AXIS IS ALONG 06.5N77W TO 
05.5N80W TO 08N89W TO 07N98W TO 08N108W TO 06N125W TO 07N133W TO 
03.5N140W. SCATTERED MODERATE TO STRONG CONVECTION WAS NOTED 
WITHIN 120 NM N OF AXIS BETWEEN 81W AND 83W. SCATTERED MODERATE 
ISOLATED STRONG CONVECTION WAS NOTED WITHIN 45 NM EITHER SIDE OF 
AXIS BETWEEN 94W AND 99W. 

...DISCUSSION...

HIGH PRESSURE 1030 MB IS CENTERED NEAR 35N152W HAS RIDGE 
EXTENDING SE TO NEAR 14N102W. THE PRESSURE GRADIENT BETWEEN THE 
RIDGE AND LOWER PRESSURE NEAR THE ITCZ IS MAINTAINING FRESH 20 
KT TRADES FROM 07N TO 12N W OF 127W. THE RIDGE WILL REMAIN OVER 
THE SAME GENERAL AREA AND WILL MAINTAIN THIS SMALL AREA OF FRESH 
TRADES THROUGH THE FORECAST PERIOD.  

GAP WINDS...
WINDS OVER THE GULF OF MEXICO HAVE VEERED, AND WINDS FUNNELING 
INTO THE GULF OF TEHUANTEPEC CONTINUE TO DIMINISH. THE FRESH TO 
STRONG 20 TO 25 KT WINDS ARE FORECAST TO DIMINISH BELOW 20 KT BY 
MIDDAY SAT.

FURTHER SOUTH...WINDS CONTINUE TO PULSE TO NEAR 20 KT OVER THE 
GULF OF PAPAGAYO DURING THE LATE NIGHT/EARLY MORNING HOURS DUE 
TO NOCTURNAL DRAINAGE FLOW.

$$
AL