Tropical Weather Discussion
Issued by NWS
Issued by NWS
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673 AXPZ20 KNHC 142118 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Fri Nov 14 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 2100 UTC. ...SPECIAL FEATURES... Large NW swell following frontal boundary: A cold front extends from 30N119W to 20N125W, and scattered showers and isolated thunderstorms are noted ahead of the boundary. The front will continue to move eastward across the waters of the discussion area north of 20N into Sat. Recent data from altimeter satellite passes and Sofar drifting buoys indicate rough to very rough combined seas up to 15 ft follow the front, and across the area west of a line from roughly Guadalupe Island to 18N140W. Recent scatterometer satellite passes also confirmed moderate to fresh winds as well behind the front. The rough seas will reach south to 10N and the offshore waters of Baja California late today into Sat. Winds and seas will diminish Sun. Please read the latest HIGH SEAS FORECAST issued by the National Hurricane Center at website - https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N85W to 05N105W. The ITCZ stretches from 05N105W to 09N140W. Scattered moderate convection is observed from 05N to 08N between 92W and 97W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Moderately strong 1020 mb high pressure over central Mexico is supporting strong to near-gale N to NE gap winds across the Gulf of Tehuantepec. Fresh NE winds and rough seas reach up to 300 nm from the coast of the Gulf of Tehuantepec. Farther north, the cold front mentioned in the Special Features section is approaching Guadalupe Island, followed by long-period NW swell to 8 ft. Gentle to moderate winds prevail elsewhere, with 4 to 6 ft seas off Mexican offshore waters and 1 to 3 ft in the Gulf of California. For the forecast, fresh to strong northerly winds and rough seas will persist in the Gulf of Tehuantepec and downstream until Sat while high pressure to the north weakens and shifts eastward. Farther north, a cold front will move across Baja California and the Gulf of California today through Sat, bringing fresh to locally strong winds and seas to 13 ft in NW swell to the waters off Baja California Norte today and Sat. Expect fresh to strong SW gap winds across the northern Gulf of California ahead of the front Sat into early Sun. Looking ahead, another frontal boundary will bring fresh NW winds and rough seas to the Baja California offshore waters early next week. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... High pressure remains located north of the NW Caribbean and continues to support fresh to locally strong easterly trade winds across the Gulf of Papagayo region. Seas in these waters are 6-9 ft. Meanwhile, moderate to locally fresh southerly winds and moderate seas are found south of the monsoon trough. In the rest of the basin, moderate or weaker winds and moderate seas are prevalent. A few showers and isolated thunderstorms are noted affecting the nearshore and offshore waters of Costa Rica, Panama and Colombia. For the forecast, high pressure north of the area will weaken and shift eastward into the weaken, allowing the winds and seas in the Papagayo region to diminish. Elsewhere, moderate or lighter winds and moderate seas will persist into early next week. ...REMAINDER OF THE AREA... Please see the Special Features section regarding large NW swell following a cold front in the region. Outside of the impacts discussed in the Special Features section above, the main issue is fresh SW winds in the deep tropics east of 100W, north of the Galapagos Islands, flowing into the monsoon trough. Seas to 8 ft are possible with components of NW and SW swell. Gentle to moderate winds and 5 to 7 ft seas dominate the basin elsewhere, primarily with NW swell. For the forecast, outside of the area in the Special Features section, fresh SW winds will persist into the monsoon trough into early next week, between 90W and 100W, supporting seas to 8 ft. Looking ahead, the large NW swell following the front will gradually subside as it moves into the tropical Pacific and mixes with shorter- period wind waves generated by moderate to fresh trade winds. Another front may move into the waters west of Baja California Norte early next week, followed by large NW swell north of 28N and east of 130W. $$ Christensen