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Tropical Weather Discussion
Issued by NWS
Issued by NWS
577 AXPZ20 KNHC 222044 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Sat Feb 22 2025 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 1800 UTC surface analysis and satellite imagery through 2030 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N79W to 04N128W. The ITCZ stretches from 04N128W to beyond 05N140W. Scattered moderate convection is present S of 08N and E of 88W, and N of 02N between 107W and 140W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Surface ridging prevails across the Mexican offshore waters, anchored by a 1029 mb high centered near 32N130W. Gentle to moderate northerly winds and seas of 5-8 ft are found the offshore waters of Baja California, with the highest seas occurring northwest of Guadalupe island. A recent scatterometer satellite pass captured light to moderate NW winds in the Gulf of California. Seas in these waters are 1-3 ft. Strong to near-gale NE winds prevail across the Tehuantepec region, with seas to 9 ft. Moderate or weaker winds and slight to moderate seas are prevalent in the remainder of the Mexican offshore waters. For the forecast, near-gale force NE winds will prevail across the Tehuantepec region through the weekend. Moderate to fresh NW winds will develop tonight and continue into Mon night in the central and southern Gulf of California and offshore of southwestern Mexico due to a tightening pressure gradient. Seas to 5 ft will accompany these winds. Looking ahead, moderate to fresh NW winds and NW swell will affect the offshore waters of Baja California Norte Mon night into Wed, with seas peaking near 10 ft. The decaying swell will spread into the Baja California Sur waters late in the week. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... A subtropical ridge over the southern United States forces fresh to strong NE trade winds in the Gulf of Papagayo and downstream to 94W. Seas in these waters are 6-8 ft. Latest observations captured fresh northerly winds in the Gulf of Panama. Seas in the area described are 3-6 ft. Elsewhere, moderate or weaker winds and slight to moderate seas prevail. For the forecast, pulsing strong to near-gale-force NE to E winds will prevail in the Gulf of Papagayo through Sun night due to a strong ridge north of the Caribbean waters. The strongest winds are expected each night and morning, and rough seas will occur near and downstream of these winds. The gale-force gap winds in the Gulf of Tehuantepec will result in rough seas in the far offshore waters of Guatemala through Sun. Elsewhere, winds will pulse to fresh to occasionally strong speeds in the Gulf of Panama each night and morning tonight through the weekend. Otherwise, gentle to moderate winds and slight to moderate seas will prevail across the remainder of the offshore waters of Central and South America through the forecast period. ...REMAINDER OF THE AREA... A 1029 mb high pressure system located near 32N130W extends southward into the tropical eastern Pacific waters. A deep upper level trough over the western waters is producing a large area of cloudiness and showers west of 105W and south of 25N. A recent scatterometer satellite pass showed moderate to fresh anticyclonic winds north of the monsoon trough and ITCZ and west of 105W. Seas in these waters are 6-8 ft. Farther east, moderate to fresh NE-E winds and 6-8 ft seas are found north of 05N and east of 105W in association with downstream winds from the now weakening gap wind event in the Gulf of Tehuantepec. Elsewhere, moderate or weaker winds and moderate seas are prevalent. For the forecast, fresh to strong easterly winds will prevail in the western trade waters through early next week, with seas building to 10 ft. Rough seas generated by weakening gap winds in the Gulf of Tehuantepec and Gulf of Papagayo will continue from 05N to 15N and as far west as 110W through the weekend. The next NW swell event will reach the NW waters on Monday and gradually spread eastward. By midweek, a cold front will enter the NW waters, producing fresh to strong winds and rough to very rough seas into late in the week. $$ ERA