000
AXPZ20 KNHC 070901
TWDEP 

TROPICAL WEATHER DISCUSSION    
NWS NATIONAL HURRICANE CENTER MIAMI FL
1005 UTC SAT APR 07 2012

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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

ITCZ FROM 05N104W TO S OF 00N130W. NO SIGNIFICANT CONVECTION.

DISCUSSION...

WEAK 1024 MB HIGH IS JUST N OF THE AREA NEAR 32N128W WITH RIDGE 
EXTENDING SE TO NEAR 16N110W. THE PRESSURE GRADIENT BETWEEN THE 
AREA OF HIGH PRESSURE AND A TROUGH OF LOW PRESSURE OVER MEXICO 
IS MAINTAINING FRESH NORTHERLY WINDS N OF 28N BETWEEN 115W AND 
120W. THE AREA OF HIGH PRESSURE WILL CONTINUE TO WEAKEN AND 
WINDS OVER THIS AREA WILL DIMINISH BELOW 20 KT BY THIS EVENING. 

LINGERING NW SWELL WITH COMBINED SEAS GREATER THAN 8 FT 
CONTINUES TO COVER MUCH OF THE AREA N OF 17N W OF 110W. THIS 
SWELL WILL SUBSIDE BELOW 8 FT BY SUN NIGHT. CROSS EQUATORIAL SW 
SWELL PREVAILS OVER THE SOUTHERN PART OF THE AREA S OF 10N W OF 
100W AND WILL CONTINUE TO AFFECT THIS AREA THROUGH THE NEXT 48 
HOURS. 

A COLD FRONT JUST NW OF THE AREA WILL MOVE INTO THE AREA THIS 
MORNING. THE FRONT WILL BRIEFLY BE ACCOMPANIED WITH 20 KT SW 
WINDS AHEAD OF THE FRONT. THESE WINDS WILL DIMINISH BELOW 20 KT 
BY THIS EVENING. THE FRONT WILL BE ACCOMPANIED BY ANOTHER SET OF 
NW SWELL...PEAKING AT 14 FT THIS AFTERNOON AND EVENING W OF THE 
FRONT. THE SWELL WILL SPREAD SE INTO THE AREA WHILE SLOWLY 
SUBSIDING. 

$$
AL