000 AXPZ20 KNHC 200312 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0311 UTC Mon Feb 20 2017 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. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The ITCZ extends from 06N90W to 05N104W. ITCZ resumes from 08N113W to beyond 02N140W. No significant convection is noted at this time. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... High pressure centered near 25N124W. Gentle to moderate winds prevail over the offshore waters along the coast of Baja California. The high will begin to weaken in response to an approaching cold front NW of the discussion area. Large NW swells continue arriving in the coastal and offshore waters of the entire Baja California peninsula. Seas as high as 16 ft continue to lurk in the waters west of Baja California Norte. These swell are maintaining dangerous conditions across these waters. Please see statements from your local meteorological agency on this high impact swell event. Winds and seas will continue decreasing through the next 24-48 hours. High pressure will build SE over eastern Mexico behind a surface trough moving east across the western Gulf of Mexico on Tuesday, helping produce the next Gulf of Tehuantepec gap wind event. This event will be brief as winds peak near gale force late Tuesday night through Wednesday morning. Winds will diminish on Wednesday evening as high pressure over Mexico weakens. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gulf of Papagayo: Winds will pulse to moderate to locally fresh during the overnight hours through Tuesday night. Winds will then diminish by midweek. Gulf of Panama: North winds will pulse to moderate to fresh during the overnight hours through Monday night. Otherwise, winds will be in light to gentle range. REMAINDER OF THE AREA... A 1020 mb high is centered over the northern waters near 26N124W. The main threat across the area continues to be the large NW swell that was generated to the N of the cold front that dissipated over the waters near southern Baja. Sea heights remain in excess of 12 ft over much of the area north of 16N between 110W and 122W. The swell will continue to propagate SE while subsiding during the next few days. Seas greater than 8 ft will spread as far south as 04N and east as 100W by Tuesday afternoon. Another cold front has entered the far NW waters this evening. Fresh to strong southwest winds prevail ahead of the front mainly N of 28N through the next 24 hours. Strong to near gale winds will persist west of the front through Monday afternoon before tapering off. This front will reintroduce a fresh set of large NW swell into the forecast waters. Seas will peak near 18 ft over the far NW waters on Monday morning. Seas will slowly subside as the swell propagate southeastward. Seas 8 ft or greater will cover much of the forecast waters north of 06N and west of 115W by midday Tuesday. Areal coverage of 8 ft seas will decrease Tuesday night through Friday and leave only a residual area of 8 ft seas over the far NW waters N of 15N and W of 135W. $$ ERA