000
AXPZ20 KNHC 111516
TWDEP 

TROPICAL WEATHER DISCUSSION                                     
NWS NATIONAL HURRICANE CENTER MIAMI FL                          
1605 UTC FRI JUL 11 2014

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 1200 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 
1500 UTC.
     
...TROPICAL WAVES...                           

TROPICAL WAVE AXIS EXTENDS NEAR 17N110W TO 07N111W MOVING W AT 
15 KT. THE TROPICAL WAVE HAS HELPED FOR A NORTHWARD PERTURBATION 
TO THE ITCZ. NUMEROUS MODERATE TO SCATTERED STRONG CONVECTION 
ASSOCIATED TO THIS WAVE IS NOTED IN THE VICINITY OF THE ITCZ.  
 
...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...  
 
THE MONSOON TROUGH EXTENDS FROM 09N83W TO 07.5N90W WHERE LOW 
LEVEL WINDS SUGGEST A TRANSITION TO ITCZ WHICH EXTENDS TO 
11N115W TO 06N131W TO 08N140W. SCATTERED MODERATE ISOLATED 
STRONG CONVECTION WAS NOTED WITHIN 60 NM OF THE MONSOON TROUGH 
BETWEEN 87W AND 90W. SCATTERED MODERATE CONVECTION WAS NOTED 
WITHIN 150 NM OF THE ITCZ BETWEEN 90W AND 105W. SCATTERED 
MODERATE ISOLATED STRONG CONVECTION WAS NOTED WITHIN 150 NM N OF 
THE ITCZ BETWEEN 105W AND 111W. NUMEROUS MODERATE SCATTERED 
STRONG CONVECTION WAS NOTED WITHIN 150 NM OF THE ITCZ BETWEEN 
111W AND 118W. 
        
...DISCUSSION...                                                
WEAK HIGH PRESSURE OF 1022 MB IS CENTERED N OF THE AREA NEAR 
40N138W WITH RIDGE EXTENDING SE TO NEAR 21N113W. THE PRESSURE 
GRADIENT BETWEEN THE AREA OF HIGH PRESSURE AND LOWER PRESSURE IN 
THE VICINITY OF THE ITCZ IS MAINTAINING GENTLE TO MODERATE 
TRADES OVER THE WESTERN WATERS. SURFACE TROUGH THAT HAS MOVED 
THROUGH THE WESTERN WATERS HAS SHIFTED W OF THE AREA WITH 
LINGERING WINDS TO NEAR 20 KT. THESE WINDS SHOULD DIMINISH BELOW 
20 KT TODAY. SEAS TO 8 FT ASSOCIATED TO THIS TROUGH CONTINUE 
OVER THE FAR WESTERN WATERS FROM 13N TO 18N W OF 137W. THESE 
SEAS SHOULD SUBSIDE BELOW 8 FT TODAY. LOW PRESSURE THAT WAS 
CENTERED NEAR 19N121W LATE LAST NIGHT HAS WEAKENED TO A TROUGH 
AS DEPICTED BY THE LATEST ASCAT PASS. WINDS AND SEAS ASSOCIATED 
TO THIS TROUGH ARE BELOW ADVISORY CRITERIA. 

GAP WINDS

THE EXTENSION OF THE CARIBBEAN JET IS HELPING PRODUCE GAP WIND 
FLOW THROUGH THE GULF OF TEHUANTEPEC AND PAPAGAYO. WITH TWO 
TROPICAL WAVES SHIFTING ACROSS THE CARIBBEAN WATERS...THESE GAP 
WINDS WILL BE MAINTAINED OVER THE NEXT COUPLE OF DAYS. WINDS 
WILL PEAK NEAR GALE FORCE OVER THE GULFS OF PAPAGAYO AND 
TEHUANTEPEC...ESPECIALLY DURING THE OVERNIGHT HOURS. SEAS WILL 
BUILD TO NEAR 10 FT OVER THESE AREAS.  
                               
$$ 
AL