000 AXPZ20 KNHC 091547 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Mon Mar 9 2026 Tropical Weather Discussion for the eastern Pacific Ocean from 03.4S to 30N, east of 120W including the Gulf of California, and from the Equator to 30N, between 120W and 140W. The following information is based on satellite imagery, weather observations, radar, and meteorological analysis. Based on 1200 UTC surface analysis and satellite imagery through 1500 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 09.5N84W to 00.5N106W. The ITCZ is analyzed from 00.5N106W to 02N117W to 02.5S126W to 00N140W. Scattered moderate convection is noted from 03.4S to 07N between 80W and 95W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A 1008 mb low is over the outer offshore waters of Baja California Norte near 27N117W, and drifting toward the E-NE this morning. To the west and northwest of the low, a broad surface ridge prevails, which is producing a tight pressure gradient between to low and 130W, and supporting fresh to strong W to NW winds over the S and W semicircles of the low, extending to approximately 22N from the low center. Rough seas to 9 ft are within these winds. Scattered showers and isolated thunderstorms are occurring across the eastern semicircle of the low and extend to coastal zones from Punta Eugenia and across much of Bahia de Sebastian Vizcaino. Fresh to locally strong NW winds are occurring W and NW of the low between 120W and 130W. In the Gulf of California, winds are light to gentle and seas slight. Moderate or weaker winds and slight to moderate seas prevail elsewhere, where a broad a very weak ridge prevails. Fresh to locally strong N gap winds have developed this morning across the Gulf of Tehuantepec to near 14N, where seas are 5 to 6 ft.. For the forecast, the aforementioned low will slowly move east and reach Punta Eugenia this evening before dissipating over the Gulf of California Mon night into Tue. Fresh to strong winds and rough seas associated with this low will continue to affect the offshore waters between Cabo San Lazaro and Sebastian Vizcaino Bay through tonight. The remnants of the low will produce moderate to fresh SW winds in the Gulf of California late today through Tue. On Tue, a ridge will build toward Baja California as new NW swell crosses the waters just west of the Baja California Norte offshores. The pressure gradient between the ridge and lower pressure over Mexico will support fresh to strong NW winds between Los Cabos and Cabo Corrientes, including Las Tres Marias late Tue into Wed. Otherwise, fresh to strong N-NE winds in Tehuantepec will diminish to moderate or weaker speeds by this evening, however a stronger gap wind event is forecast to begin on Thu morning, with winds likely reaching gale-force Thu evening. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to locally strong NE to E gap winds and moderate seas to 7 ft are across the Papagayo region and downwind near 90W, while moderate N winds and slight to moderate seas prevail across the Gulf of Panama and downstream to 05N. Light to gentle winds and slight to moderate seas are elsewhere. The leading edge of strong cross-equatorial S-SW swell has begun to cross the equator and reach the Galapagos Islands and coastal Ecuador this morning, and will build during the next 24 hours. For the forecast, fresh to strong gap winds will continue to pulse in the Papagayo region through Fri night as high pressure remains N of the area. Moderate to fresh N winds will also pulse in the Gulf of Panama through the weekend. Mainly light to gentle winds will prevail elsewhere through the forecast period. Otherwise, cross-equatorial S-SW swell will build across the regional waters today, and bring rough seas to the offshore waters SW of the Galapagos Islands this afternoon, then continue to spread N and NE across the area offshore waters and coasts, before subsiding starting Tue evening. ...REMAINDER OF THE AREA... High pressure of 1029 mb remains well to the NW of the region near 37N145W. Associated broad ridging covers the waters N of about 15N and W of 120W. The related pressure gradient is sustaining fresh to locally strong NE winds from 04N to 18N between 123W and 140W. Rough seas to 8 ft in mixed swell prevail with these winds. A 1008 mb low pressure is over the outer Baja California Norte offshores with fresh to locally strong W to NW winds extending westward to 129W and southward to 22N. Elsewhere, winds are of moderate or weaker and seas moderate in mixed swell. For the forecast, the low pressure will move eastward and dissipate over the Baja California Peninsula tonight into Tue. New high pressure will develop NW of Baja California, extending a ridge across the E Pacific subtropical waters. As a result, new NW swell will move into the waters W of the Baja California offshores to about 130W and subside Thu night. Otherwise, large S-SW cross- equatorial swell will reach the waters W of the Galapagos by this evening and then will spread N and NE, producing rough seas through Wed, before subsiding from east to west Thu through Sat morning. $$ Stripling
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