{"msg": "079\nAXPZ20 KNHC 160245\nTWDEP \nTropical Weather Discussion\nNWS National Hurricane Center Miami FL\n0405 UTC Wed Sep 16 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 0000 UTC surface analysis and satellite imagery through\n0230 UTC.\n...SPECIAL FEATURES...\nGulf of Tehuantepec Gale Warning: The pressure gradient between \nhigh pressure building over southern Mexico and the eastern north\nPacific monsoon trough will support strong to near-gale force N \nto NE gap winds across the Gulf of Tehuantepec into Wed, and will\nreach minimal gale force Wed night. Rough seas will accompany \nthese gap winds.\n...TROPICAL WAVES...\nThe axis of a tropical wave is near 107W from 02N to 17N, moving\nwest at 10 to 15 kt. Nearby convection is discussed in the \nITCZ/monsoon trough section below.\n...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...\nThe monsoon trough extends from 08N78W to 07N90W to T.D Fifteen\nnear 15.5N126W then to beyond 14N140W. Scattered moderate \nconvection is noted from 05N to 10N between 85W and 95W, from 10N\nto 15N between 105W and 110W, and from 08N to 11N between 130W\nand 135W.\n...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...\nPlease see Special Features section above for more on a gale \nwarning in the Gulf of Tehuantepec. \nFresh to strong N to NE gap winds, and seas of 6-8 ft, are over \nthe Gulf of Tehuantepec. Moderate to fresh winds are over the \nnorthern Gulf of California. Gentle to moderate winds and 4-7 ft \nare noted elsewhere, except 1-3 ft in the central and southern \nGulf.\nFor the forecast, please see the Special Features section for \ninformation about the gale warning in the Gulf of Tehuantepec. \nElsewhere, fresh SE to S winds pulse across the northern Gulf of\nCalifornia through Wed. Large N swell off Baja California Norte \nnear Guadalupe Island will subside through mid week. \n...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, \nAND WITHIN 750 NM OF ECUADOR...\nFresh to strong easterly winds, and moderate seas, prevail \nacross the Gulf of Papagayo region, extending downstream to near \n90W. Moderate to fresh winds extend downstream from the Gulf of\nPapagayo to the outer offshore waters of El Salvador and \nGuatemala. Elsewhere, moderate or weaker winds and moderate seas \nare noted.\nFor the forecast, the pressure gradient between a ridge north of\nthe area and the eastern north Pacific monsoon trough will \nsupport pulsing fresh to occasionally strong easterly winds and \nmoderate to rough seas across the Papagayo region through mid \nweek, then pulsing to moderate to fresh thereafter. Moderate \nwinds and seas will prevail elsewhere.\n...REMAINDER OF THE AREA...\nRemnants Of Fifteen-E is centered near 15.5N 125.8W at 16/0300\nUTC, moving west-southwest at 10 kt. Estimated minimum central\npressure is 1006 mb. Maximum sustained wind speed is 25 kt with\ngusts to 35 kt. Peak seas are near 12 ft. Scattered moderate and\nisolated strong convection is noted from 12N to 18N between 120W\nand 125W. The system will continue to weaken while on a general \nwestward to west-southwestward motion then dissipate by Thu \nmorning. \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 \nFifteen-E NHC Forecast/Advisory and Public Advisory at \nwww.hurricanes.gov for more details.\nSW swell from the southern hemisphere is crossing the equator \nand reaching as far north as 03N between 105W and 120W. Gentle \nto moderate winds and 4-6 ft combined seas in mixed swell are \nnoted elsewhere. \nFor the forecast, even as Fifteen-E dissipates, a broad area of \nfresh to strong NE to E winds and moderate to rough seas in N\nswell will persist through the remainder of the week from 15N to\n25N west of 125W between the remnant trough and the subtropical \nridge to its north.\nThe southerly swell south of 03N will subside below 8 ft by this\nevening.\n", "title": "Eastern Pacific Tropical Weather Discussion", "id": "1210634615413407746", "issued": "2026-09-16T04:05:00Z", "wmo": "AXPZ20", "source": "NOAA/NWS National Hurricane Center, received via the National Weather Wire Service", "page": "https://hurricane.terrapin.com/text/1210634615413407746"}