000
AXPZ20 KNHC 210906
TWDEP 

TROPICAL WEATHER DISCUSSION                                    
NWS NATIONAL HURRICANE CENTER MIAMI FL                         
1005 UTC SAT MAR 21 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...
            
MONSOON TROUGH FROM 8N88W TO 1013 MB LOW PRES NEAR 3N94W TO 
4N118W. ITCZ FROM 4N118W TO 5N140W. NO SIGNIFICANT CONVECTION.

...DISCUSSION... 

VERY TRANQUIL MARINE AND WEATHER CONDITIONS PERSIST ACROSS THE 
AREA. A COLD FRONT HAS MOVED INTO THE FAR NW PORTION OF THE AREA 
FROM 31N131W TO 26N140W. OTHERWISE RIDGE N OF 14N W OF 110W.. 
THE PRES GRADIENT BETWEEN THE AREA OF HIGHER PRESSURE AND LOWER 
PRES IN THE VICINITY OF THE ITCZ IS SUPPORTING NE TRADEWINDS OF 
15 TO 20 KT GENERALLY S OF 20N AND W OF 130W. A SET OF NW SWELLS 
WILL MOVE INTO THE FAR NW WATERS EARLY SUN WITH SEAS BUILDING TO 
NEAR 10 FT OVER THE AREA BY SUN AFTERNOON. THE COLD FRONT WILL 
MAKE EASTWARD PROGRESS ALONG 29-30N OVER THE WEEKEND AS IT 
WEAKENS...EXTENDING FROM 30N130W TO 27N132W BY SUNDAY 
EVENING...WHERE IT WILL DISSIPATE. 

OVER THE WATERS E OF 100W...THERE ARE NO ONGOING GAP WIND EVENTS 
THAT EXCEED 20 KT WINDS...WHILE SEAS ARE GENERALLY 6 FT OR LESS. 
GLOBAL MODELS INDICATE THAT NO SIGNIFICANT GAP WIND EVENTS ARE 
EXPECTED TO DEVELOP THROUGH THE WEEKEND. AS HAS BEEN MENTIONED 
THE PAST SEVERAL DISCUSSIONS...THIS IS THE FIRST TIME IN SEVERAL 
WEEKS THAT THERE IS NO GAP WIND ACTIVITY.
 
$$
DGS