


Tropical Weather Discussion
Issued by NWS
Issued by NWS
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705 AXPZ20 KNHC 221533 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Tue Apr 22 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... The monsoon trough extends from the coast of Panama near 09N79W and continues to 06N101W. The ITCZ extends from there to beyond 03N140W. Scattered moderate convection is noted from 03N-07N east of 102W and from 04N-09N between 122W-132W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A weak ridge of high pressure is present from 25N125W southeastward to 12N95W. Winds are moderate or weaker across the waters. Seas are 4-6 ft in mixed NW and SW swell over the Pacific waters, and 1-2 ft over the Gulf of California. For the forecast, the weak ridge of high pressure will dominate the Mexican offshore waters for the next few days, leading to quiescent wind and wave conditions. Looking ahead, a stronger pressure gradient will increase NW winds along the Baja California peninsula to fresh beginning on Fri night. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Scattered showers and isolated thunderstorms continue to affect the offshore waters of Panama, Costa Rica and Colombia. A strong ridge over the W Atlantic and Caribbean continues to force fresh to strong NE to E winds over the Gulf of Papagayo region, reaching downwind to 90W. Elsewhere, winds are moderate or weaker. Seas are 4-7 ft in SW swell. For the forecast, NE to E gap winds are expected to continue pulsing to fresh with locally strong over the Gulf of Papagayo region through Thu morning. Otherwise, moderate or weaker winds will prevail over the Central American and equatorial Pacific offshore zones through the end of the week. Looking ahead, moderate S swell should reach the equatorial zones beginning Fri night. ...REMAINDER OF THE AREA.... A 1034 mb high pressure is located at 43N142W with a ridge extending southeastward from 25N125W to 12N95W. A modest pressure gradient between the ridge and lower pressure over the ITCZ is forcing moderate to fresh NE trades from 06N-15N west of 115W with seas to 8 ft. Elsewhere, winds are gentle or weaker with 5-7 ft in mixed N and SW swell. For the forecast, little change in winds is expected through the end of the week. Looking ahead, a weak cold front should reach our N border on Fri night and Sat, but only accompanied by moderate winds. A moderate S swell is anticipated to reach our S border east of 120W beginning on Fri and continuing until Sat. $$ Landsea