{"msg": "107\nAXPZ20 KNHC 130841\nTWDEP \nTropical Weather Discussion\nNWS National Hurricane Center Miami FL\n1005 UTC Thu Aug 13 2026\nTropical Weather Discussion for the eastern Pacific Ocean from\n03.4S to 30N, east of 120W including the Gulf of California, and\nfrom the Equator to 30N, between 120W and 140W. The following\ninformation is based on satellite imagery, weather observations,\nradar, and meteorological analysis.\nBased on 0600 UTC surface analysis and satellite imagery through\n0830 UTC.\n...SPECIAL FEATURES...\nNewly named Tropical Storm Hernan is centered near 18.1N 131.9W \nat 13/0900 UTC, moving west at 2 kt. Estimated minimum central \npressure is 1006 mb. Maximum sustained wind speed is 35 kt with \ngusts to 45 kt. Hernan is expected to diminish thereafter as \ndrier air moves into the area, and may become a remnant low \nthrough Fri. Maximum seas are reaching 11 ft within 60 nm of the\ncenter in the northwest quadrant, and may peak to 12 ft Thu. \nScattered moderate convection is active within 60 nm of the \ncenter of Hernan.\nPlease read the latest High Seas Forecast issued by the National\nHurricane Center at website - \nhttps://www.nhc.noaa.gov/text/MIAHSFEP2.shtml and the latest \nEight-E NHC Forecast/Advisory and Public Advisory at \nwww.hurricanes.gov for more details.\n...TROPICAL WAVES...\nThe axis of a tropical wave is near 92W north of 02N, moving \nwest at 10 to 15 kt. Nearby convection is discussed in the \nITCZ/monsoon trough section below.\nThe axis of a tropical wave is near 123W/124W from 02N to 18N, \nmoving westward at 10 to 15 kt. Nearby convection is discussed in\nthe ITCZ/monsoon trough section below.\n...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...\nThe monsoon trough extends from 09N78W to 07N95W to 08N110W. The\nITCZ extends from 08N110W to 09N120W. Scattered moderate to \nisolated strong convection is from 05N to 13N between 85W and \n105W. \n...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...\nModerate to fresh winds prevail over the Gulf of Tehuantepec. \nGentle to moderate winds are found elsewhere. Moderate seas are \nover the open waters off Mexico, with slight to moderate seas \nover the Gulf of California.\nFor the forecast, fresh to strong gap winds are expected across \nthe Gulf of Tehuantepec through early next week. The pressure \ngradient between high pressure west of the area and lower \npressures over northern Mexico will support moderate to locally \nfresh southerly winds across the northern Gulf of California \ntonight into Thu, then again on Thu night. A moderate pressure \ngradient will promote mostly gentle to moderate winds across the \nremainder offshore waters of Mexico along with moderate seas.\n...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, \nAND WITHIN 750 NM OF ECUADOR...\nFresh to strong E gap winds and moderate seas persist across and\ndownstream the Gulf of Papagayo. Gentle to moderate winds and \nmoderate seas in SW swell prevail elsewhere. \nFor the forecast, moderate to fresh NE to E gap winds and \noccasionally rough seas will pulse across the Papagayo region. \nGentle to moderate winds will prevail between the Galapagos \nIslands and Ecuador, with large southerly swell moving into the \nregion starting Thu night. Light to gentle winds and moderate \nseas in SW swell are expected elsewhere.\n...REMAINDER OF THE AREA...\nPlease see Special Features section above for more on newly \nnamed Tropical Storm Hernan. \nBroad ridging dominates the waters north of 20N. Outside of the\narea impacted by Hernan, the pattern is supporting fresh to \nlocally strong winds, and rough seas, from 15N to 22N between \n130W and 140W. Rough seas in southerly swell cover the waters S \nof 05N between 105W and 130W. Gentle to moderate winds, and \nmoderate seas prevail elsewhere.\nFor the forecast, please see Special Features section above for\nmore on Hernan. Elsewhere, the southerly swell will maintain \nrough seas over the discussion waters S of 05N between 95W and \n130W through the end of the week.\n", "title": "Eastern Pacific Tropical Weather Discussion", "id": "1201078604808126471", "issued": "2026-08-13T10:05:00Z", "wmo": "AXPZ20", "source": "NOAA/NWS National Hurricane Center, received via the National Weather Wire Service", "page": "https://hurricane.terrapin.com/text/1201078604808126471"}