000 AXPZ20 KNHC 290328 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 0405 UTC FRI JAN 29 2016 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 0000 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 0300 UTC. ...SPECIAL FEATURES... A VERY TIGHT PRESSURE GRADIENT IS ANALYZED ACROSS SOUTHERN MEXICO AND THE ISTHMUS OF TEHUANTEPEC IN ASSOCIATION WITH A 1024 MB HIGH CENTERED NEAR 23N98W. THIS SYNOPTIC SETUP IS SUPPORTING A GALE FORCE WIND EVENT OF N-NE 30-40 KT WINDS THROUGH THE GULF. SEAS OF 10-14 FT WILL MAINTAIN THEMSELVES INTO FRIDAY. BY FRIDAY LATE AFTERNOON INTO EVENING...THE PRESSURE GRADIENT WILL BEGIN TO RELAX ALLOWING FOR THE WIND FIELD TO DIMINISH TO 30-35 KT... AND TO BELOW GALE FORCE BY LATE EVENING. THIS GAP WIND EVENT WILL PERSIST THROUGH SATURDAY MORNING AND TERMINATE BY SATURDAY AFTERNOON. SEAS ARE FORECAST TO SUBSIDE INTO A RANGE OF 8-10 FT BY EARLY FRIDAY EVENING. NE SWELL RESULTING FROM THIS EVENT WILL SPREAD SOUTHWESTWARD AWAY FROM THE GULF REGION...AND MIX WITH LONG PERIOD NW SWELL ACROSS AN AREA FROM 07N TO 15N BETWEEN 94W AND 104W FRIDAY EVENING...AND FROM 05N TO 13N BETWEEN 100W AND 107W BY SATURDAY EVENING. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE INTERTROPICAL CONVERGENCE ZONE AXIS EXTENDS FROM 05N84W TO 05N104W TO 03N123W TO 02N140W. ISOLATED MODERATE CONVECTION IS FROM 03N TO 05N BETWEEN 89W AND 91W. ...DISCUSSION... A 1026 MB HIGH CENTERED NEAR 31N128W EXTENDS AN AXIS SE TO NEAR 16N110W...AND ANOTHER RIDGE EXTENDING SW TO BEYOND 26N140W. THIS HIGH IS FORECAST TO DRIFT SW AND WEAKEN SLIGHTLY DURING THE NEXT 24 HOURS. THE ASSOCIATED PRESSURE GRADIENT BETWEEN THE RIDGE AND LOWER PRESSURE IN THE VICINITY OF THE ITCZ REGION IS GENERATING MAINLY FRESH TRADES. SEAS WITHIN THIS AREA ARE IN THE 8 TO 12 FT RANGE. HIGHER SEAS ASSOCIATED WITH LONG PERIOD SWELL ARE NOTED NW OF A LINE FROM 30N126W TO 12N140W. LONGER PERIOD NW SWELL WITH WAVE PERIODS OF 17-20 SECONDS WILL CONTINUE TO PROPAGATE SE ACROSS THE WATERS W OF 100W THROUGH THE REMAINDER OF THE WEEK. AN ADDITIONAL PULSE OF NW SWELL MENTIONED ABOVE IS CURRENTLY REACHING ACROSS THE NW CORNER OF THE AREA BUILDING SEAS TO 17 FT. THE LEADING EDGE OF THIS SWELL EVENT PRESENTLY EXTENDS FROM A LINE NEAR 16N98W INTO THE SOUTHERN HEMISPHERE NEAR 03S111W. ROUGH WAVE ACTION PRODUCING HAZARDOUS SURF CONDITIONS CAN BE EXPECTED ALONG THE PACIFIC COAST OF BAJA CALIFORNIA FRIDAY THROUGH SUNDAY AS THE SECOND SET OF NW SWELL ARRIVES. THESE CONDITIONS WILL REACH THE REVILLAGIGEDO AND LAS MARIAS ISLANDS ON SAT. GAP WINDS... GULF OF PAPAGAYO...STRONG NE WINDS ARE FORECAST TO MATERIALIZE FRIDAY MORNING BETWEEN HIGH PRESSURE ANALYZED ACROSS SOUTHERN MEXICO AND THE NORTHERN PORTION OF CENTRAL AMERICA AND THE REMAINDER OF CENTRAL AMERICA...THE EAST PACIFIC WATERS...AND NORTHWESTERN SOUTH AMERICA. THESE WINDS WILL INCREASE TO 25-30 KT FRIDAY NIGHT INTO SATURDAY AND SPREAD SW TO NEAR 08N94W. SEAS WITHIN THE AREA OF MAXIMUM WINDS ARE FORECAST TO BUILD TO 10 FT SATURDAY MORNING. IN ADDITION...FRESH TO OCCASIONAL STRONG NE-E WINDS ARE EXPECTED TO EXTEND DOWNWIND OF THE GULF TO COVER ROUGHLY THE WATERS WITHIN 60 NM EITHER SIDE OF A LINE FROM 10.5N88W TO 09N91W TO 08N97W. GULF OF PANAMA...FRESH TO STRONG NORTHERLY WINDS ARE EXPECTED TO FUNNEL INTO THE GULF OF PANAMA FROM THE CARIBBEAN SEA LATE FRIDAY NIGHT INTO EARLY SATURDAY MORNING. SEAS ARE FORECAST TO BUILD TO 8 FT WITH CONDITIONS MODERATING BY LATE SATURDAY. $$ HUFFMAN