000 AXPZ20 KNHC 281610 CCA TWDEP Tropical Weather Discussion...Corrected NWS National Hurricane Center Miami FL 1508 UTC Sat Oct 28 2017 Corrected Offshore waters within 250 nm of Mexico section Tropical Weather Discussion for the eastern Pacific Ocean from the Equator to 32N, east of 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 1545 UTC. ...SPECIAL FEATURES... Recently Tropical Depression Selma inland is centered near 13.0N 88.8W 1005 mb, or about or about 15 nm ESE of San Salvador El Salvador at 28/1500 UTC is moving NE or 055 degrees at 07 kt, with maximum sustained winds 30 kt with gusts to 40 kt. Selma will continue to move inland today and tonight while rapidly weakening and dissipate by early on Sunday morning. Strong to near tropical storm force winds SW to W winds along and just offshore the coast of southeastern El Salvador will diminish to fresh winds this afternoon and to moderate winds to night. Seas of 10-13 ft resulting from those winds will subside to 6-8 ft this afternoon, and continue at 6-8 ft through Sunday night. Heavy rainfall will remain over much of the offshore waters of southern Guatemala, El Salvador and Honduras through Sunday. Heavy rainfall is still possible over El Salvador, southern Guatemala, and southern Nicaragua through Sunday. Refer to the latest forecast advisory under WMO/AWIPS headers WTPZ25 KMIA/MIATCMEP5 for additional details. Gulf of Tehuantepec Gale Warning: Strong N-NE winds across the Gulf of Tehuantepec will increase to minimal gale force this afternoon as strong high pressure ridges southward along the Sierra Madre Oriental mountains of Mexico. These gale force winds are forecast to continue into early Sunday morning, then gradually diminish back down to strong N-NE winds by early on Monday, and to fresh NE winds Monday afternoon as the strong high pressure ridging weakens due to the main high center weakening as it slides eastward across the northern Gulf of Mexico. Seas to 9 ft in mixed swell are expected to reach within 60 nm of a line from 16N95W to 13N96W to 11N97W on Monday. Heavy Surf Conditions: Swells of 8 to 11 ft, with periods of 20 to 24 seconds, are forecast to reach the Pacific coast of the Baja Peninsula tonight, then reach the Pacific coast of Mexico as far S as 19N by late Sunday night. Expect for the swell energy to bring breaking waves that could induce hazardous near shore conditions through late Monday. INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough axis has lost definition over the far southeastern portion of the area, and presently extends from W of Tropical Depression Selma from 13N92W to 14N101W to 09N107W to 08N117W to 10N126W to 12N140W. Scattered moderate convection is seen within 120 nm S of the axis between 104W-110W, and within 60 nm of the axis between 100W-103W. ...DISCUSSION... OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Heavy Surf Conditions: please refer to the special features section above for information on heavy seas arriving on the Pacific coast of Mexico into early next week. Gulf of Tehuantepec: please refer to the special features section above for information on the next gap flow of gale force N-NE winds set to begin this event. Gulf of California: A moderate NW breeze is forecast today. Light and variable winds on Sunday will become a moderate to locally fresh southerly breeze over the gulf waters N of 28N Monday. A surface ridge extending southeastward from a 1020 mb high center located at 26N132W to near the Revillagigedo Islands will maintain a gentle to moderate NW breeze along the Pacific coast of Baja California through Monday night. OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR...Corrected Tropical Drepression Selma: please refer to the special features section above. REMAINDER OF THE AREA... A 1020 mb high center analyzed at 26N132W extends a ridge southeastward to near 19N120W. High pressure covers the area N of 16N W of 119W. The high center will gradually shift northward through Sunday. A rather light gradient will persist into Monday allowing for generally light to moderate NE-E winds over the area. Long-period 19 to 22 second NW swell has moved into the NW portion of the area, and is producing seas in the range of 8-11 ft NW of a line from 32N124W to 15N140W with higher seas of 10-13 ft N of 23N and W of 137W. Another batch of long period NW swell will move into the NW part of the area today, and propagate SE and S through Monday as it gradually loses its energy. Seas will subside to around a maximum of 9-10 ft by then over much of the area, except N of 25N W of 127W where seas are expected to be less than 8 ft. $$ Aguirre