


Tropical Weather Discussion
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Issued by NWS
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880 AXPZ20 KNHC 140405 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sat Jun 14 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 0350 UTC. ...SPECIAL FEATURES... Tropical Storm Dalila is centered near 15.2N 103.0W at 14/0300 UTC, moving northwest at 10 kt. Estimated minimum central pressure is 1001 mb. Maximum sustained wind speed is 35 kt with gusts to 45 kt. Seas of 12 ft and greater extend outward to 150 nm to the northeast, and near the Mexican coast, and up to 450 nm across the southeast quadrant. Peak seas are estimated at 15 ft. Numerous moderate to strong convection extend from 13N to 19N between 97W and 107W, including along the Mexican coast. A northwest general motion is expected to continue through Saturday with gradual strengthening. A turn toward the west is forecast by Sunday. On the forecast track, the center of Dalila is forecast to move parallel to, but offshore of, the southwestern coast of Mexico. Weakening should begin by Sunday as it approaches the Revillagigedo Islands. Dalila will then move over cooler waters and become post-tropical overnight Sun. Please refer to the latest HIGH SEAS FORECAST issued by the National Hurricane Center at website - https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml and the latest T.S. Dalila NHC Forecast Advisory and Public Advisory at www.hurricanes.gov for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N85W to 13N98W, then resumes west of T.S. Dalila near 12N111W to 06N136W. The ITCZ extends from 06N136W to beyond 06N140W. Aside from the convection associated with T.S. Dalila, scattered to numerous moderate to strong convection is noted from 03N to 15N E of 98W and from 06N to 12N between 108W and 122W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please read the Special Features section for information on Tropical Storm Dalila, located a few hundred miles southwest of Acapulco, Mexico. Broad cyclonic flow associated with Dalila dominates the SW Mexican offshore waters. Elsewhere, a broad and weak ridge extends from a 1030 mb high centered well NW of the area near 38N140W to just west of Guadalupe Island. This continue to support gentle to moderate NW winds across the offshore waters of Baja California where seas are 5 to 6 ft in NW swell, except 7 ft NW of Guadalupe Island. Light to gentle winds are ongoing in the Gulf of California with seas less than 3 ft, except in the entrance of the Gulf where seas are 3 to 5 ft. For the forecast, T.S. Dalila will move NW tonight and Sat, gradually strengthening to 50 kt Sat evening. Dalila will move to 16.0N 104.3W Sat morning, 17.1N 106.0W Sat evening, 17.9N 108.0W Sun morning, 18.1N 110.0W Sun evening, weaken to a remnant low near 18.1N 111.9W Mon morning, and 18.2N 113.5W Mon evening. Dalila will change little in intensity as it moves near 18.1N 116.5W late Tue. Moderate- sized cross-equatorial southerly swell will mix with seas generated from Dalila to impact the waters between Tehuantepec and Cabo Corrientes through Sun. Elsewhere, high pressure well northwest of the area will support generally moderate to locally fresh N-NW winds across the Baja California offshore waters through Mon. NW to N swell will build into the Baja waters Sun through Wed. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Heavy showers and tstms prevail across much of the area waters E of 94W, with gusty winds and rough seas likely ongoing over the Costa Rica near and offshore waters, and south of the Gulf of Panama into the coastal waters of Colombia. Winds elsewhere from 02N to 10N are moderate to fresh from the S and SW with higher winds likely in areas of strong convection. Seas across the area waters are 6 to 10 ft in cross-equatorial SW swell, with highest seas to 10 to 11 ft between the Galapagos Islands and Ecuador. For the forecast, large SW swell will persist through most of the weekend, then subside early next week. Tropical Storm Dalila located southwest of Acapulco, Mexico will move NW through Sat then turn more W-NW and intensify through the weekend. SW swell from this system will also impact the waters of El Salvador and Guatemala today through Sat. Showers and thunderstorms are expected to remain active across the area waters through tonight then begin to diminish slightly over the weekend. ...REMAINDER OF THE AREA... Please read the Special Features section for information on Tropical Storm Dalila, located a few hundred nautical miles southwest of Acapulco, Mexico. Broad and weak ridging dominates the waters north of 13N, centered on a 1030 mb high near 38N140W. This pattern is supporting mostly moderate N to NE winds north of 20N and west of 120W, with 5 to 7 ft seas in a mix of N and S swell. Southerly swell of 8 to 10 ft has merged with the seas being generated by T.S Dalila, and is dominating the waters south of 12N between 90W and 120W, with seas as high as 13 ft. Elsewhere moderate to fresh SW winds persist south of the monsoon trough between 95W and 120W. Seas are 5 to 8 ft in S swell elsewhere west of 120W. In the forecast, little change is expected west of 120W except for increased NW swell north of 28N and east of 130W Sat through Mon. Conditions east of 120W and associated with T.S. Dalila are described in the Special Features section above, and will be dominated by large SW swell through Sat night, and mixed E to SE swell generated by Dalila. Dalila is forecast to die off near 18.5N 115.4W by Tue afternoon. $$ Ramos