000
AXPZ20 KNHC 200916
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC FRI MAR 20 2015

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...
            
THE MONSOON TROUGH EXTENDS FROM 1013 MB LOW PRES NEAR 09N88W TO 
05N95W TO 05N110W. THE ITCZ EXTENDS FROM 06N126W TO BEYOND 
05N140W. NO SIGNIFICANT CONVECTION WAS NOTED.

...DISCUSSION... 

MOSTLY TRANQUIL MARINE AND WEATHER CONDITIONS PERSIST ACROSS THE 
AREA. HIGH PRESSURE OF 1024 MB CENTERED NEAR 30N132W WITH RIDGE 
EXTENDING FROM THE HIGH  SE TO NEAR 20N110W. THE AREA OF HIGH 
PRESSURE WILL SHIFT SOUTHWARD OVER THE NEXT COUPLE OF DAYS. THIS 
WILL TIGHTEN THE PRESSURE GRADIENT AND STRENGTHEN THE TRADES 
OVER THE WESTERN WATERS N OF THE ITCZ BY SAT MORNING. NORTHERLY 
SWELL WITH SEAS GREATER THAN 8 FT CONTINUE TO AFFECT THE FAR 
NORTHERN WATERS N OF LINE 25N BETWEEN 118W AND 122W. SEAS WILL 
SUBSIDE TO LESS THAN 8 FT BY FRI MORNING. 

OVER THE EASTERN WATERS THERE ARE NO ONGOING GAP WIND EVENTS 
THAT EXCEED 20 KT WINDS OR SEAS TO 8 FT...AND GLOBAL MODELS 
INDICATE THAT NO EVENTS ARE EXPECTED TO DEVELOP DURING THE NEXT 
3-4 DAYS. AS MENTIONED YESTERDAY...THIS IS THE FIRST TIME IN 
SEVERAL WEEKS THAT THERE IS NO GAP WIND ACTIVITY. OBSERVING THE 
SST'S THE PREDOMINANCE OF GAP WINDS FROM THE PAST SEVERAL WEEKS 
IS VERY EVIDENT BY A COLD PLUME EXTENDING DOWNWIND OF THE GULFS 
OF TEHUANTEPEC...PAPAGAYO...AND PANAMA. 

$$
DGS