--------------------------------------------------------------------------- TROPICAL WEATHER DISCUSSION (EASTERN PACIFIC AREA) MESSAGES T1T2: AX A1A2: PZ Date: 2025-11-27 --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC270246_C_KWBC_20251127024646_16515500-518-TWDEP.txt ****0000004963**** AXPZ20 KNHC 270246 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Thu Nov 27 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 0000 UTC surface analysis and satellite imagery through 0200 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: A cold front will move across the Gulf of America through late Thu. The pressure gradient between strong high pressure building in the wake of the front and the eastern north Pacific monsoon trough will support strong to near- gale force gap winds and rough seas tonight. These winds will increase to gale force by early Thu. A plume of fresh to strong N to NE gap winds and seas of 8 to 10 ft will reach into Pacific waters up to 480 nm downstream of the Gulf of Tehuantepec by late Thu. Winds and seas will diminish Fri and Sat as the high pressure north of the area shifts eastward and the pressure gradient loosens. Please refer to the latest NHC High Seas Forecast at website https://www.hurricanes.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N84W to 07N95W to 09N119W to 06N128W. The ITCZ extends from 06N128W to 05N140W. Scattered moderate and isolated strong convection is observed from 05N to 14N between 108W and 128W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please refer to the Special Features section for details on an upcoming Gale Warning in the Gulf of Tehuantepec. Aside from conditions on the Gulf of Tehuantepec discussed above, moderate to fresh NW winds prevail over the Gulf of California. Gentle to moderate winds extend from the entrance of the Gulf to near Cabo Corrientes. Light to gentle winds are noted elsewhere. Seas are in the 4-6 ft range over the open waters off Mexico. Seas of 3-6 ft prevail in the Gulf of California. For the forecast, strong to near- gale force gap winds in the Gulf of Tehuantepec will increase to gale force by early Thu morning, and continue through Fri morning leading to rough seas. Fresh to strong winds will then persist in the Gulf of Tehuantepec into early Sat before diminishing. Farther north, moderate to fresh winds, in the central and northern Gulf of California will diminish by Thu evening. A weak cold front or trough will move into the waters off northern Baja California, possibly supporting moderate to fresh winds near the entrance to the Gulf of California to Cabo San Lucas to the Revillagigedo Islands Sun and Sun night. No significant swell events are forecast through the upcoming weekend. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong NE winds are over the Papagayo region, with moderate to fresh winds extending downstream to near 90W. Light to gentle winds are elsewhere north of the monsoon trough. Gentle to locally moderate winds are found south of the monsoon trough. Seas are in the 3-6 ft range in mixed SW and NW swells. For the forecast, moderate to fresh NE winds will pulse over and downstream of the Papagayo region the remainder of the week and into the weekend, locally strong at times through Sat. Moderate or lighter winds are forecast elsewhere through the remainder of the week and into the weekend. No significant swells are forecast through Sun. Seas will build slightly in the Papagayo region due to the fresh to strong winds, and offshore Guatemala to locally rough through Fri due to an upcoming Gulf of Tehuantepec gale force gap wind event. ...REMAINDER OF THE AREA... The pressure gradient between ridging north of 20N and lower pressure in the vicinity of the ITCZ and lower pressure within the monsoon trough is supporting moderate to fresh winds north of the ITCZ to near 18N and west of 130W, with moderate winds N of the ITCZ between 110W and 130W. The trade winds are contributing to 7-9 ft combined seas over these waters, assisted by a component of longer- period NW swell. Gentle to moderate breezes and moderate seas in a mix of swell are noted elsewhere. Fresh trade winds and 7-9 ft seas in the trade wind belt will gradually decrease through the end of the week as the high pressure north of the area weakens. A new set of NW swell with rough seas may arrive by the end of the week and into next weekend north of 25N. Moderate winds and seas will persist elsewhere. A large set of NW swell may arrive to the NW waters by the end of the weekend and into early next week. $$ AL ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC270849_C_KWBC_20251127085003_29294990-962-TWDEP.txt ****0000004856**** AXPZ20 KNHC 270849 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Thu Nov 27 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 0600 UTC surface analysis and satellite imagery through 0800 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: A cold front will move across the Gulf of America through late today. The pressure gradient between strong high pressure building in the wake of the front and the eastern north Pacific monsoon trough is supporting strong to near- gale force gap winds and rough seas. These winds will increase to gale force by early today. A plume of fresh to strong N to NE gap winds and seas of 8 to 10 ft will reach into Pacific waters up to 480 nm downstream of the Gulf of Tehuantepec by late today. Winds and seas will diminish Fri and Sat as the high pressure north of the area shifts eastward and the pressure gradient loosens. Please refer to the latest NHC High Seas Forecast at website https://www.hurricanes.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N84W to 07.5N94.5W to 10N115W to 09N121W. The ITCZ extends from 09N121W to 07N140W. Scattered moderate and isolated strong convection is observed from 07N to 14N between 108W and 128W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please refer to the Special Features section for details on an upcoming Gale Warning in the Gulf of Tehuantepec. Aside from conditions in the Gulf of Tehuantepec discussed above, moderate to fresh NW winds prevail over the Gulf of California. Gentle to moderate winds extend from the entrance of the Gulf to near Cabo Corrientes. Light to gentle winds are noted elsewhere. Seas are in the 4-6 ft range over the open waters off Mexico. Seas of 3-6 ft prevail in the Gulf of California. For the forecast, gale force gap winds in the Gulf of Tehuantepec will continue through Fri morning leading to rough seas. Fresh to strong winds will then persist in the Gulf of Tehuantepec into early Sat before diminishing. Farther north, moderate to fresh winds, in the central and northern Gulf of California will diminish by this evening. A weak cold front or trough will move into the waters off northern Baja California, possibly supporting moderate to fresh winds near the entrance to the Gulf of California to Cabo San Lucas to the Revillagigedo Islands Sun and Sun night. No significant swell events are forecast through the upcoming weekend. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong NE winds are over the Papagayo region, with moderate to fresh winds extending downstream to near 90W. Light to gentle winds are elsewhere north of the monsoon trough. Gentle to locally moderate winds are found south of the monsoon trough. Seas are in the 3-6 ft range in mixed SW and NW swells, reaching 7 ft in the Gulf of Papagayo. For the forecast, fresh to strong NE winds will prevail over the Papagayo region through Sat. Moderate or lighter winds are forecast elsewhere through the remainder of the week and into the weekend. While no significant swells are forecast, seas will build slightly in the Papagayo region due to the fresh to strong winds, and offshore Guatemala to locally rough through Fri due to a Gulf of Tehuantepec gale force gap wind event. ...REMAINDER OF THE AREA... The pressure gradient between ridging north of 20N and lower pressure in the vicinity of the ITCZ and lower pressure within the monsoon trough is supporting moderate to fresh winds north of the ITCZ to near 18N and west of 120W, with moderate winds N of the monsoon trough to 15N between 110W and 120W. The trade winds are contributing to 7-9 ft combined seas over these waters, assisted by a component of longer- period NW swell. Gentle to moderate breezes and moderate seas in a mix of swell are noted elsewhere. Fresh trade winds and 7-9 ft seas in the trade wind belt will gradually decrease through the end of the week as the high pressure north of the area weakens. A new set of NW swell with rough seas may arrive by the end of the week and into next weekend north of 25N. Moderate winds and seas will persist elsewhere. A large set of NW swell may arrive to the NW waters by the end of the weekend and into early next week. $$ AL ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC271525_C_KWBC_20251127152605_29294990-988-TWDEP.txt ****0000004996**** AXPZ20 KNHC 271525 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Thu Nov 27 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 1200 UTC surface analysis and satellite imagery through 1505 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: A cold front is moving across the Gulf of America and will depart the basin tonight. The pressure gradient between strong high pressure building in the wake of the front and the eastern north Pacific monsoon trough is supporting strong to gale force gap winds and rough to very rough seas in the Gulf of Tehuantepec. A plume of fresh to strong N to NE gap winds and seas of 8 to 10 ft will reach into Pacific waters up to 480 nm downstream of the Gulf of Tehuantepec by late today. Winds and seas will diminish Sat as the high pressure north of the area shifts eastward and the pressure gradient loosens. Please refer to the latest NHC High Seas Forecast at website https://www.hurricanes.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from the coast of Costa Rica near 09N84W to 06N100W to 09N120W. The ITCZ stretches from 09N120W to beyond 07N140W. Scattered moderate and isolated strong convection is observed from 04N to 08N and east of 85W and from 07N to 16N and between 108W and 127W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please refer to the Special Features section for details on an upcoming Gale Warning in the Gulf of Tehuantepec. Aside from conditions in the Gulf of Tehuantepec discussed above, moderate to locally fresh NW winds and slight to moderate seas prevail in the Gulf of California. Gentle to moderate NW-N winds and moderate seas extend from the entrance of the Gulf to near Cabo Corrientes. Elsewhere in the Mexican offshore waters, gentle to moderate winds and moderate seas are prevalent. For the forecast, gale force gap winds in the Gulf of Tehuantepec will continue through Fri night, resulting in rough to very seas. Fresh to strong winds will then persist in the Gulf of Tehuantepec into Sat night before diminishing. Farther north, moderate to locally fresh winds, in the central and northern Gulf of California will diminish by this evening. A weak cold front or trough will move into the waters off northern Baja California, possibly supporting moderate to fresh winds near the entrance to the Gulf of California to Cabo San Lucas to the Revillagigedo Islands Sun and Sun night. No significant swell events are forecast through the upcoming weekend. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Strong high pressure north of the Caribbean basin continues to support fresh to strong NE winds across the Gulf of Papagayo region, extending downstream to 90W. Seas in these waters are 6-8 ft. Farther south, moderate to locally fresh southerly winds and moderate seas are occurring south of 04N. Elsewhere, gentle to locally moderate winds and slight to moderate seas prevail. For the forecast, high pressure north of the area will support fresh to strong NE winds in the Papagayo region through Sun. N winds will pulse to fresh speeds at night in the Gulf of Panama through Fri night. Moderate or lighter winds are forecast elsewhere through the remainder of the week and into the weekend. While no significant swells are forecast, seas will build slightly in the Papagayo region due to the fresh to strong winds, and offshore Guatemala to locally rough through Fri due to a Gulf of Tehuantepec gale force gap wind event. ...REMAINDER OF THE AREA... A 1023 mb high pressure system centered north of the remainder of the tropical eastern Pacific and lower pressure in the deep tropics support moderate to fresh easterly trade winds north of the monsoon trough and ITCZ to 20N. Seas in these waters are 6-9 ft. South of the monsoon trough and ITCZ, moderate to locally fresh southerly winds and seas of 6-8 ft are prevalent. Elsewhere, moderate or weaker winds and moderate seas prevail. For the forecast, fresh trade winds and 7-9 ft seas in the trade wind belt will gradually decrease through the end of the week as the high pressure north of the area weakens. A new set of NW swell with rough seas may arrive by the end of the week and into next weekend north of 25N. Moderate winds and seas will persist elsewhere. A large set of NW swell may arrive to the NW waters by the end of the weekend and into early next week. $$ Delgado ########################### END OF MESSAGE SET ############################