000 AXPZ20 KNHC 171605 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Thu Jul 17 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 1550 UTC. ...TROPICAL WAVES... A tropical wave extends from 06N to 17N, with axis near 113W, moving westward at 10-15 kt. Scattered moderate convection is from 06N to 16N between 110W and 120W. A tropical wave extends from 06N to 17N, with axis near 122W, moving westward at 5-10 kt. Scattered moderate convection is from 07N to 17N between 120W and 130W. A tropical wave extends from 06N to 16N, with axis near 137W, moving westward around 5-10 kt. Scattered moderate convection is from 06N to 15N between 130W and 140W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N83W to 09N110W to 10N135W. The ITCZ begins near 10N138W and continues beyond 10N140W. Numerous moderate convection is from 03N to 08N E of 81W. Scattered moderate convection is from 06N to 12N between 98W and 109W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A surface trough moving across the Bay of Campeche is supporting fresh to strong N to NE winds in the Gulf of Tehuantepec along with moderate seas to 7 ft in SW swell. Elsewhere, moderate or weaker winds prevail along with moderate seas in SW swell, except NW swell N of Punta Eugenia. For the forecast, pulsing moderate SE winds over the northern Gulf of California will prevail through Mon night. Pulsing fresh to strong N gap winds will continue in the Gulf of Tehuantepec through Sun night as high pressure builds over central Mexico. Rough seas are forecast to develop in Tehuantepec Fri night through late Sat. Afterward, winds in the Tehuantepec region will diminish to moderate to fresh, continuing through Mon night. Elsewhere, moderate or weaker winds and moderate seas will prevail elsewhere. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong NE to E gap winds prevail in the Gulf of Papagayo along with rough seas to 8 ft, reaching as far as 92W. Moderate SE to S winds are ongoing between Ecuador and The Galapagos Islands with moderate seas to 7 ft in SW swell. Moderate or weaker winds and moderate seas in SW swell are elsewhere across the Central America offshore waters. For the forecast, pulsing fresh to strong NE to E winds will continue in the Gulf of Papagayo through the weekend, diminishing to moderate to fresh speeds by Mon. Gentle to moderate southerly winds will continue between Ecuador and The Galapagos Islands through Mon night with moderate seas. Locally moderate or weaker winds will prevail elsewhere. ...REMAINDER OF THE AREA... High pressure of 1035 mb well northwest of the discussion waters near 44N146W extends a ridge across the waters north of the ITCZ and monsoon trough. Moderate trades are in the belt from 11N to 220N west of 112W, and from 08N to 14N east of 112W. Gentle to moderate NE to E winds are elsewhere north of 20N with rough seas in NE swell over the far NW waters, N of 28N and W of 138W. South of the ITCZ and monsoon trough, moderate to fresh winds prevail with moderate seas, except rough S of 06N. For the forecast, rough seas over the NW waters will subside this morning. Moderate to fresh NE to E winds and moderate seas will continue north of the monsoon trough and ITCZ to 20N through Mon night, except for rough seas developing W of 130W Sat night through Mon. These winds and seas will be modulated by the passage of several tropical waves under a prevalent subtropical ridge through the forecast period. $$ Ramos
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Page last modified: Thursday, 17-Jul-2025 16:10:35 UTC