000 AXPZ20 KNHC 050942 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Thu Dec 5 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 0600 UTC surface analysis and satellite imagery through 0935 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: Strong high pressure north of the area will continue to support strong to gale-force N winds through at least Sat morning. Winds may diminish below gale-force in the afternoon and evening hours. Thereafter, strong N-NE gap winds will occur into early Sun. Rough seas will persist into the weekend. Please read the latest High Seas Forecast issued by the National Hurricane Center at the website- https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from the coast of Costa Rica near 08N82W to 06N100W and to 07N118W. The ITCZ stretches from 07N118W and to beyond 08N140W. Scattered moderate convection is present within 120 nm on both sides of the monsoon trough and ITCZ. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please read the Special Features section above for information on an ongoing gale-force gap wind event in the Gulf of Tehuantepec region. A 1026 mb high pressure system centered near 33N130W continues to maintain moderate to locally fresh NW winds across the offshore waters of Baja California. This was confirmed by a recent scatterometer satellite pass. Seas in these waters are 5-7 ft. Gentle to moderate NW-N winds are found in the central and southern Gulf of California, along with seas of 2-4 ft. Light to gentle winds and slight seas prevail in the northern Gulf waters. Elsewhere in the Mexican offshore waters, excluding the Gulf of Tehuantepec, moderate or weaker winds moderate seas are prevalent. For the forecast, aside from the ongoing gale-force winds in the Gulf of Tehuantepec region, high pressure over the eastern Pacific will continue to support mainly moderate NW-N winds and moderate seas across the remainder of the Mexico offshore waters for the rest of the week. Winds will diminish this weekend. Meanwhile, winds may increase to strong along the entire length of the Gulf of California Mon night into Tue, possibly reaching gale-force in the northern Gulf waters. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR...Updated A 1025 mb high pressure system situated over northern Florida supports fresh to strong NE winds across the Gulf of Papagayo region and downstream waters to 90W. Seas in these waters are 6-8 ft. Farther south, moderate S-SW winds and seas of 4-6 ft are occurring south of the monsoon trough. Elsewhere, light to gentle winds and slight to moderate seas are evident. For the forecast, strong high pressure north of the area will support fresh NE winds in the Papagayo region, pulsing to strong speeds at night, through the weekend. Locally rough seas in NE swell associated with these winds may occur today. Farther west, rough seas induced by gale-force winds in the Gulf of Tehuantepec will continue through early Fri. Moderate to locally fresh NE winds will pulse across the remainder of the Central American waters through Thu. Otherwise, light to gentle southwest to west winds along with moderate seas are expected south of the monsoon trough going into the weekend, with the exception of moderate southwest winds and moderate seas offshore Colombia south of 05N through Sat. ...REMAINDER OF THE AREA... A 1026 mb high pressure system positioned north of the area continues to support moderate to fresh easterly trade winds south of 27N to the ITCZ. Seas in these waters are 6-10 ft, with the highest seas occurring in the westernmost trade waters. Elsewhere, moderate or weaker winds and moderate seas prevail. For the forecast, little change is expected in the western part of the area through the end of the week. In the eastern waters, fresh to locally strong N-NE winds and rough seas will continue to spread downstream from the Gulf of Tehuantepec and Gulf of Papagayo. A new set of long-period NW swell is forecast to enter the NW part of the area this weekend. Otherwise, high pressure will dominate the eastern Pacific, supporting moderate to locally fresh trades and moderate seas through the rest of the week. $$ Delgado
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