Tropical Weather Discussion...Corrected

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Tropical Weather Discussion...Corrected NWS National Hurricane Center Miami FL 2205 UTC Thu Sep 17 2026 Corrected Remainder of the Area section 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 1800 UTC surface analysis and satellite imagery through 2145 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: The pressure gradient between high pressure over southern Mexico and the eastern north Pacific monsoon trough will support strong to near-gale force N to NE gap winds across the Gulf of Tehuantepec into Fri. Winds earlier this morning were at gale-force, but have recently diminished to just below gale-force. Winds may again reach minimal gale force briefly tonight along with seas of 7 to 9 ft. Winds will continue to pulse in the Gulf at fresh to strong speeds through Sat morning, with seas lowering to a peak of around 6 ft. Please read the latest High Seas Forecast issued by the National Hurricane Center at website: https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. The axis of a tropical wave is near 115.5W from 07N to 18N, with low pressure of 1009 mb near 12N115.5W. It is moving westward at about 10 kt. Satellite imagery reveals scattered moderate to isolated strong convection between the wave and 118W, and also from 11N to 14N between 111W and 116W. Environmental conditions appear conducive for additional development, and a tropical depression is likely to form this weekend or early next week as it moves westward across the western part of the East Pacific. Please refer to the latest NHC Tropical Weather Outlook at website: www.hurricanes.gov for more details. ...TROPICAL WAVES... A tropical wave has is its axis along 99W from 05N northward to extreme southern Mexico near Acapulco. It is moving westward at around 10 to 15 kt. Numerous moderate to isolated strong convection is seen from 08N to 13N between 94W and 100W. An area of low pressure could form in association to this wave well offshore of southwestern Mexico within the next few days. Environmental conditions appear conducive for gradual development, and a tropical depression is likely to form late this weekend or early next week while it gradually moves northwestward and then northward off the coast of southwestern Mexico. The axis of a tropical wave is near 115.5W from 07N to 18N, moving westward at 10 to 15 kt. See the Special Features section above for related information. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis extends from along the coast of northwest Colombia west-southwest to across the Costa Rica/Panamanian border, then to 09N84W to 07N1OOW to 09N110W to low pressure, Invest EP98, near 12N115.5W 1009 mb and to 12N124W. Numerous moderate to isolated strong convection is from 08N to 13N between 100W-106W, and from 06N to 09N between 118W-124W. Scattered moderate convection is within 120 nm south of the trough between 91W-95W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see Special Features section above for details on a Gale Warning for the Gulf of Tehuantepec. Mostly gentle to moderate northwest winds across the central and southern sections of the Gulf of California while light and variable winds are over the northern portion of the Gulf. Seas are 2 to 4 ft in the Gulf, except for slightly higher seas of 3 to 5 ft at the entrance due to long-period southwest swell. For the forecast, please see the Special Features section for information about the Gale Warning for the Gulf of Tehuantepec. Gentle to moderate breezes and moderate seas will persist into the weekend over the regional Mexican waters. The exception is along and offshore the northern and central portions of Baja California, where northwest winds will pulse at fresh to locally strong speeds into Sat night. Seas of 4 to 7 ft are expected over these waters through the weekend. Meanwhile, a tropical wave located to the southeast of of Acapulco, Mexico is producing disorganized showers and thunderstorms over the outer offshore waters of the states of Guerrero and Oaxaca. Looking ahead, environmental conditions appear conducive for gradual development, and a tropical depression is likely to form late this weekend or early next week while it moves gradually northwestward and then northward off the coast of southwestern Mexico. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong easterly winds, and moderate to rough seas, prevail across the Gulf of Papagayo region, extending downstream to near 92W. Moderate to fresh east winds extend downstream from the Gulf of Papagayo to the outer offshore waters of El Salvador and Guatemala. For the forecast, the pressure gradient between a ridge north of the area and the eastern north Pacific monsoon trough will support pulsing fresh to occasionally strong easterly winds and moderate to rough seas across the Papagayo region today, then pulsing to moderate to fresh thereafter. Moderate winds and seas will prevail elsewhere. ...REMAINDER OF THE AREA... The 1006 mb remnant low of Tropical Depression Fifteen-E is located near 15N133W. A 1912Z scatterometer satellite data pass shows fresh to strong northeast winds over the waters to the northwest of the low pressure near 26N. Seas are 7 to 10 ft with these winds per latest scatterometer satellite altimeter data. Satellite imagery shows numerous isolated strong convection from 14N to 18N between 129W and 136W. Scattered moderate to isolated strong convection is present from 02N tom 07N between 125W and 132W and from 14N to 20N between 120W and 129W. Fresh to strong winds and rough seas supported by the pressure gradient between the area of low pressure and the subtropical ridge north of the area, cover the waters from 15N to 25N west of 125W. Gentle to moderate winds and 4 to 6 ft combined seas in mixed swell are noted elsewhere. For the forecast, environmental conditions appear conducive for gradual development of the tropical wave along 115.5W, and a tropical depression is likely to form this weekend or early next week as it moves westward across the western part of the eastern Pacific. Farther west, a broad area of fresh to strong northeast to east winds and moderate to rough seas in north swell will persist through the remainder of the week from 15N to 25N west of 125W through the weekend. Also, as described in the Tropical Waves section above, there is some potential for tropical cyclone development associated with a tropical wave that is near 99W for late this weekend or early next week.