


Tropical Weather Discussion
Issued by NWS
Issued by NWS
414 AXPZ20 KNHC 130344 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sun Jul 13 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 0330 UTC. ...TROPICAL WAVES... The axis of a tropical wave is near 85W from 06N northward into the Caribbean Sea, moving westward around 10 kt. Nearby convection is described in the ITCZ/monsoon trough section below. The axis of a tropical wave is near 95W from 04N to 15N, moving westward around 10 kt. Nearby convection is described in the ITCZ/monsoon trough section below. The axis of a tropical wave is near 114W from 07N to 19N, moving westward around 10 kt. Nearby convection is described in the ITCZ/monsoon trough section below. The axis of a tropical wave is near 126W from 05N to 16N, moving westward around 15 to 20 kt. Nearby convection is described in the ITCZ/monsoon trough section below. The axis of a tropical wave has repositioned to near 135W from 05N to 16N. Nearby convection is described in the ITCZ/monsoon trough section below. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 1009 mb low over northern Colombia near 10.5N74W to 11N86W to 10N118W. The ITCZ extends from 10N118W to 10N125W, then resumes west of a tropical wave from 09N127W to 09N135W, and again resumes west of a tropical wave from 08N136W to beyond 08N140W. Scattered moderate convection is occurring from 06N to 09N between 108W and 113W, and from 08N to 12N between 117W and 123W. Widely scattered moderate convection is noted from 05N to 14N between 84W and 105W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Moderate SE winds and seas of 2 to 4 ft are occurring through the Gulf of California as troughing prevails over the northern Gulf and along the Baja California peninsula. Elsewhere, moderate to locally fresh E winds and seas of 5 to 7 ft are occurring offshore of southern Mexico, generated by fresh E gap winds in the Gulf of Papagayo offshore of Nicaragua. Otherwise, ridging extends over the remainder of the waters, supporting mainly gentle winds. Seas of 5 to 6 ft in mixed NW and S and are noted offshore of Baja, and seas of 5 to 6 ft in S swell are occurring offshore of southern Mexico. For the forecast, moderate to occasionally fresh N gap winds will occur in the Gulf of Tehuantepec through the middle of next week as high pressure builds over central Mexico. Farther south, moderate E winds, generated by gap winds in the Gulf of Papagayo, will occur well offshore of southern Mexico through the middle of next week. Elsewhere, localized moderate SE to SW gap winds are expected in the Gulf of California into Mon. Fresh to strong S to SE winds will then develop over the northern Gulf by midweek as low pressure deepens over the Desert Southwest. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to fresh E gap winds are occurring in the Gulf of Papagayo as low pressure prevails over northern Colombia. Moderate E winds and seas of 5 to 7 ft also extend through the waters offshore of El Salvador and Guatemala. South of the monsoon trough, moderate S to SW winds are noted. Seas of 5 to 7 ft in S to SW swell prevail over the Central and South American waters. For the forecast, fresh E winds are expected in the Gulf of Papagayo through Sun, with pulsing strong winds and occasionally rough seas then expected early next week as high pressure builds over Mexico and the Gulf of America. Moderate to locally fresh E winds will extend through the waters offshore of Guatemala and El Salvador. Elsewhere, moderate to locally fresh N winds may pulse in the Gulf of Panama into the middle of next week. A new S to SW swell will propagate through the South American waters starting on Sun, promoting rough seas offshore of Ecuador and Colombia through the middle of next week. ...REMAINDER OF THE AREA... Moderate N to NE winds are occurring north of the ITCZ and west of 120W along the periphery of high pressure, centered north of the area near 40N142W. Locally fresh NE winds are noted in the northwestern waters, generally north of 25N and west of 130W, where seas of 5 to 7 ft in NE swell prevail. South of the monsoon trough and ITCZ, moderate to fresh S to SE winds and seas of 6 to 8 ft are occurring. For the forecast, moderate to locally fresh N to NE winds and moderate seas will occur north of the monsoon trough and ITCZ through next week as ridging prevails over the eastern Pacific. Occasionally fresh trade winds may generate short-period rough seas, from 10N to 15N west of 130W, through the middle of next week. Elsewhere, a new S to SW swell will propagate through the southern waters over the next several days, promoting rough seas south of 05N. Looking ahead, a new N swell may lead to rough seas north of 25N by midweek. $$ ADAMS