


Tropical Weather Discussion
Issued by NWS
Issued by NWS
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941 AXPZ20 KNHC 031542 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Thu Apr 3 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 1500 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends westward from a 1010 mb low over northern Colombia to 07N95W to 04N113W. The ITCZ continues from 04N113W to 02S130W to beyond 02S140W. Scattered moderate to isolated strong convection is seen from 00N to 03N east of 87W, and from 02N to 06N E of 80W to the coast of Colombia, from 00N to 02N between 80W and 84W, from 02N to 05N between 92W and 95W, and from 02n to 05n between 100W and 105W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A broad surface ridge extends southeastward from 1028 mb high pressure centered near 33N137W to near the Revillagigedo Islands. This pattern is supporting fresh to locally strong NW to N winds west of Baja California. Seas of 8 to 10 ft in NW swell dominate the waters N of Cabo San Lazaro. Moderate to locally fresh NW to N winds and seas of 5 to 7 ft in moderate NW swell are present from Cabo San Lucas to near the Revillagigedo Islands. In the Gulf of California, gentle to moderate winds and seas of 2 to 4 ft are noted. Light and variable winds and moderate seas primarily in SW swell prevail across the remainder of the Mexican offshore waters. For the forecast, moderate to fresh NW winds will persist off Baja California through Sun, although strong winds may briefly pulse off Cabo San Lucas during overnight hours. In the central Gulf of California, moderate to fresh with locally strong winds are anticipated tonight. A similar scenario is also forecast for the central and southern Gulf of California Sat night and Sun night. Large NW swell will maintain rough seas west of Baja California until early Fri, then subside to mainly moderate, with another set arriving by early next week. Looking ahead, a surge of near-gale force northerly gap winds may develop in the Gulf of Tehuantepec late Sun night, which could increase further to minimal gale-force early next week. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to locally strong easterly winds and 5 to 7 ft seas are present in the Gulf of Papagayo and downwind to about 88W, while moderate northerly winds and seas at 3 to 5 ft are evident elsewhere off Central America. Farther south, light to gentle winds along with 4 to 6 ft seas in a mixed of SW and NW swells prevail off Colombia and Ecuador. For the forecast, fresh to locally strong winds will pulse at times in the Gulf of Papagayo through Fri night, mainly during nighttime and early morning hours. A mix of SW and NW swells will keep moderate seas between Ecuador and the Galapagos Islands through Fri. ...REMAINDER OF THE AREA.... A broad surface ridge extends southeastward from 1028 mb high pressure centered near 33N137W to near the Revillagigedo Islands. This pattern is supporting fresh trade winds and 6 to 8 ft seas in a mix of swell south of 20N and west of 125W. Moderate NE winds persist elsewhere west of 110W, with 5 to 7 ft seas, except for 8 to 10 ft seas in NW swell north of 20N and east of 120W. Gentle NE to E breezes and 5 to 7 ft seas in mixed NW and SW swell are noted east of 110W. For the forecast, the ridge will be nearly stationary while weakening some through this weekend. This should allow winds to diminish slightly across the trade wind belt. The NW swell will also steadily decay which allow seas to subside slightly. A new set of large NW swell will reach 30N140W by Sat afternoon, with seas up to around 14 ft near 30N140W by early Sun. Seas of 8 ft or greater will cover the waters west of a line from Punta Eugenia to 05N127W by Mon evening. Little change is expected elsewhere through Sun over the open Pacific waters. $$ GR