000
AXPZ20 KNHC 050929
TWDEP 

TROPICAL WEATHER DISCUSSION                                   
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC THU APR 04 2013

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 0600 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
0900 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...              
MONSOON TROUGH FROM 10N85W 5N92W TO 6N100W. ITCZ AXIS
FROM 6N100W TO 2N135W. NO SIGNIFICANT CONVECTION. 

...DISCUSSION...                                                
UPPER LEVEL TROUGH OVER THE NW PORTION OF THE DISCUSSION
AREA WITH AXIS FROM 30N134W TO 23N120W. MODERATE TO STRONG
SUBSIDENCE WITH DRY STABLE AIR AT THE MIDDLE AND UPPER
LEVELS FROM 15N-30N W OF 130W AND FROM 25N-30N W OF 120W.
HIGH CLOUDS ARE WITHIN 500 NM S OF LINE FROM 12N135W TO 
SOUTHERN BAJA CALIFORNIA. AN UPPER LEVEL RIDGE EXTENDS FROM
THE SOUTHERN ROCKIES ACROSS WESTERN MEXICO TO 10N110W.

HIGH PRES BUILDING BEHIND A COLD FRONT MOVING THROUGH THE
GULF OF MEXICO WILL TIGHTEN THE PRES GRADIENT ACROSS
SOUTHERN MEXICO RESULTING IN GALE FORCE WINDS THROUGH THE
GULF OF TEHUANTEPEC LATER TODAY. THE GALE FORCE WINDS ARE
FORECAST TO CONTINUE THROUGH SAT THEN DECREASE TO BELOW
GALE FORCE BY SUN.

AN AREA OF MIXED SW AND NW SWELL TO 10 FT IS S OF 15N W OF 
120W. OTHERWISE NLY WINDS ARE FORECAST TO INCREASE TO 20-25
KT N OF 28N WITH 120 NM W OF THE BAJA CALIFORNIA PENINSULA.
THESE WINDS ARE FORECAST TO CONTINUE THROUGH SUN.

$$
DGS