000 AXPZ20 KNHC 031518 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Wed Apr 3 2024 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 1430 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from the coast of E Panama near 09N79W to 06N90W. The ITCZ extends from 06N90W to 04N110W to 02S140W. Scattered moderate is observed from 07N-11N between 110W-135W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A NW to SE ridge extends from 30N127W to 20N123W to 12N100W. Fresh to strong NW winds spread from the central through S Gulf of California to near and south of Cabo Corrientes due to a tight pressure gradient between the ridge and a trough along the NW coast of mainland Mexico. Seas near Cabo Corrientes are 7-9 ft, 4-6 ft in the central and S Gulf of California, and 1-3 ft in the N Gulf of California. Elsewhere, winds are moderate or weaker and seas are 4-7 ft. For the forecast, the ridge will continue to support fresh to strong NW winds funneling across the central Gulf of California and off Cabo Corrientes through tonight. Farther south, strong to near-gale force winds will pulse across the Gulf of Tehuantepec this evening through Thu afternoon, and late Thu night through Fri afternoon. Looking ahead, expect fresh to strong W gap winds across the N Gulf of California Thu night into Fri associated with a cold front moving into S California and Baja California Norte. W to NW winds may be near gale-force north of 29N Fri night. Fresh to strong NW winds will filter in behind the front in the central and S Gulf of California for the start of the weekend. Large NW swell should accompany the front off Baja California Thu night through Sun, with fresh to strong NW-N winds near shore from Cabo San Lazaro northward. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR Mainly gentle winds prevail across the offshore waters with 3-5 ft. Patchy smoke and haze may be limiting visibility slightly near the coast, mainly off El Salvador and Guatemala. For the forecast, winds and seas should remain tranquil for the next several days over the Central America and equatorial Pacific waters. ...REMAINDER OF THE AREA... A NW to SE ridge extends from 30N127W to 20N123W to 12N100W. The ridging combined with lower pressures near the ITCZ is supporting a belt of fresh to strong trades from around 07N-20N and west of 110W. Combined seas in this area are 8 to 11 ft aided by old N swell. Mainly gentle to moderate trades prevail elsewhere over the open waters, except freshening winds in the NW waters. Seas are 6 to 7 ft elsewhere. For the forecast, a cold front will push across our NW corner later today and reach from N Baja California to 20N140W by Fri morning. NE winds behind the front will occur tonight and tomorrow before diminishing Fri. As the front pushes southeastward into our waters, this will reduce the N-S pressure gradient and diminish the extent of the fresh to strong trades, which will continue through the weekend. A very large NW swell will cross our N border Thu night and continue advecting southeastward while gradually decaying through the weekend. $$ Landsea