000 AXPZ20 KNHC 062124 TWDEP TROPICAL WEATHER DISCUSSION NWS NATIONAL HURRICANE CENTER MIAMI FL 2205 UTC THU MAR 06 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 1800 UTC SURFACE ANALYSIS AND SATELLITE IMAGERY THROUGH 2100 UTC. ...SPECIAL FEATURES... GULF OF TEHUANTEPEC GALE WARNING...A COLD FRONT HAS MOVED THROUGH THE BAY OF CAMPECHE N OF THE AREA. HIGH PRESSURE IS BUILDING DOWN EASTERN MEXICO. FRESH TO STRONG NORTHERLY WINDS WILL BE INDUCED IN THE GULF OF TEHUANTEPEC AROUND SUNSET TONIGHT. WINDS ARE FORECAST TO RAPIDLY INCREASE TO MINIMAL GALE FORCE AROUND MIDNIGHT TONIGHT...THEN WILL RAPIDLY DIMINISH BELOW GALE FORCE AROUND SUNRISE FRI...THEN TO 20 KT OR LESS BY FRI EVENING. ASSOCIATED SEAS WILL BUILD TO UP TO 11-12 FT DURING THE GALE FORCE WINDS...THEN WILL SUBSIDE TO LESS THAN 8 FT BY FRI EVENING. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... THE MONSOON TROUGH EXTENDS FROM 06N86W TO 03N104W. THE ITCZ EXTENDS FROM 03N104W TO 07N115W TO BEYOND 04N140W. NO SIGNIFICANT CONVECTION IS NOTED. ...DISCUSSION... A COLD FRONT EXTENDS FROM NEAR THE CALIFORNIA CHANNEL ISLANDS SW TO 30N128W. THE SW PORTION THAT EXTENDS THROUGH THE AREA TO 140W HAS DISSIPATED. 1024 MB HIGH PRESSURE NEAR 31N131W EXTENDS A RIDGE TO THE SE TO NEAR 19N108W...AND TO THE SW TO NEAR 26N140W. THE PRESSURE GRADIENT BETWEEN THE RIDGING AND LOWER PRESSURES ALONG THE ITCZ ARE SUPPORTING FRESH TO STRONG NE-E TRADES FROM 10N TO 18N W OF 130W. MEANWHILE NW SWELL OF 8-13 FT COVERS THE WATERS W OF A LINE FROM 30N125W TO 20N130W TO 15N124W TO 04N134W WITH ANOTHER DECAYING POCKET OF 8-9 FT NW SWELL IS FROM 19N TO 26N BETWEEN 114W AND 121W. THE TRADES ACROSS THE W CENTRAL WATERS WILL DIMINISH TO MODERATE TO FRESH LEVELS ON FRI AS THE HIGH SHIFTS EASTWARD WEAKENING THE PRESSURE GRADIENT SLIGHTLY. MEANWHILE THE SET OF NW SWELL WILL CONTINUE TO DECAY WHILE PROPAGATING TO THE SE...WITH RESIDUAL 8-10 FT SEAS CONFINED TO THE WATERS N OF 18N BETWEEN 112W AND 125W BY SAT AFTERNOON. 1009 MB LOW PRESSURE WILL MOVE FROM SOUTHERN CALIFORNIA AND SW ARIZONA TOWARD THE NORTHERN GULF OF CALIFORNIA TONIGHT... EXTENDING AN INVERTED TROUGH TO THE NW ACROSS THE SOUTHERN CALIFORNIA COASTAL WATERS BY FRI MORNING. THE LOW/TROUGHING COMBINED WITH THE HIGH/RIDGING TO THE W WILL SUPPORT FRESH TO STRONG NW-N WINDS FROM POINT CONCEPTION SOUTHWARD INTO THE AREA N OF 28N E OF 121W TO THE NORTHERN BAJA CALIFORNIA PENINSULA. THESE WINDS WILL REINFORCE THE NW SWELL BUILDING HEIGHTS TO 10- 14 FT FROM POINT CONCEPTION TO 28N. THESE WINDS WILL DIMINISH SAT AS THE LOW DISSIPATES WEAKENING THE PRESSURE GRADIENT. THE PRESSURE GRADIENT WILL THEN TIGHTEN IN THE NORTHERN GULF OF CALIFORNIA WITH FRESH TO STRONG NW WINDS EXPECTED N OF 30N SAT. ANOTHER COLD FRONT WILL APPROACH 30N140W SAT. FRESH TO STRONG SW WINDS AND A NEW SET OF NW SWELL WITH SEAS GREATER THAN 8 FT WILL BREACH THE NW CORNER OF THE DISCUSSION WATERS SAT MORNING... PROPAGATING SOUTHEASTWARD DURING THE DAY SAT. MEANWHILE...GENTLE TO MODERATE WINDS AND SEAS WILL PREVAIL IN THE GULFS OF FONSECA...PAPAGAYO...AND PANAMA THROUGH SAT. $$ LEWITSKY