{"msg": "670\nAXPZ20 KNHC 210316\nTWDEP \nTropical Weather Discussion\nNWS National Hurricane Center Miami FL\n0405 UTC Wed Oct 21 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\n0300 UTC.\n...SPECIAL FEATURES...\nGulf of Tehuantepec Gale Warning: High pressure settled over \nMexico will continue to funnel northerly gap winds of gale-force \ninto the Gulf of Tehuantepec through tonight. Seas in these \nwaters are rough. Fresh to strong winds will persist into Thu,\nthen increase to gales again Thu night into Fri night.\nGale Warning South of Southern Mexico (Invest EP94): A low-\npressure system located a few hundred miles south of the Gulf of \nTehuantepec is producing a large area of showers and \nthunderstorms that are gradually becoming better organized, and a\ntropical depression is forecast to form during the next day or \nso. This system is expected to move westward to west-\nnorthwestward at 5 to 10 kt during the next few days, remaining \nwell offshore of southern Mexico. A large area of fresh to strong\nwinds and rough seas surround this low center, and these winds\nand seas are expected to increase over the next day or so. A Gale\nWarning has been issued as a result, for Wed into Thu. There is\na high chance of tropical formation of this low within the next \n48 hours. \nPlease read the latest High Seas Forecast issued by the National \nHurricane Center at website \nhttps://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for further \ndetails.\n...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...\nThe monsoon trough extends from 11N85W to 1007 mb low pressure \n(EP94) near 10N97W, then onward to 06N105W. The ITCZ extends from\n05N105W to 06N140W. Scattered moderate to isolated strong \nconvection is noted from 05N to 13N between 95W and 105W, and\nfrom 05N to 08N between 130W and 140W.\n...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...\nPlease see the Special Features section above for information on\nthe Gale Warning in the Gulf of Tehuantepec.\nElsewhere, 1007 mb low pressure, the remnant of Simon, is \ncentered between Cabo Corrientes and the Revillagigedo Islands \nnear 19N108W. is leading to moderate NW winds across Socorro\nIsland. Elsewhere, light to gentle winds and moderate seas \nprevail, except for slight seas in the Gulf of California. \nFor the forecast, high pressure settled over Mexico is funneling \nnortherly gap winds of gale-force into the Gulf of Tehuantepec \nthis evening. Seas in these waters are rough. Winds will diminish\nto strong by Wed, but will increase to gales again Thu night into\nSat. A low- pressure system located a few hundred miles south of \nthe Gulf of Tehuantepec is producing a large area of showers and \nthunderstorms that are gradually becoming better organized, and a\ntropical depression is forecast to form during the next day or \nso. This system is expected to move westward to west- \nnorthwestward at 5 to 10 kt during the next few days, remaining \nwell offshore of southern Mexico. There is a high chance of \ntropical formation of this low within the next 48 hours \n...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, \nAND WITHIN 750 NM OF ECUADOR...\nRough seas coming from gale-force gap winds in the Gulf of \nTehuantepec continue to impact waters well offshore Guatemala. \nOtherwise, gentle to moderate winds and moderate seas prevail.\nFor the forecast, rough seas well offshore Guatemala deriving \nfrom gap winds in the Gulf of Tehuantepec will decay tonight. \nWinds will pulse nightly to fresh in the Papagayo region. \nModerate or weaker winds and moderate seas will prevail \nelsewhere.\n...REMAINDER OF THE AREA...\nSee Special Features section above for information on a Gale\nWarning issued in association with a low pressure system that has\na potential for tropical development. \nElsewhere, fresh NW winds and rough seas are increasing behind a\ncold front that extends from 30N124W to 25N130W. Moderate or \nweaker winds and moderate seas dominate the remainder of the \nbasin. \nFor the forecast, as the cold front moves to the southeast \ntonight, fresh to strong winds and very rough seas will impact \nwaters north of 25N through Wed, with rough seas reaching as far\nsouth as 20N Thu. A low- pressure system located a few hundred \nmiles south of the Gulf of Tehuantepec is producing a large area \nof showers and thunderstorms that are gradually becoming better \norganized, and a tropical depression is forecast to form during \nthe next day or so. This system is expected to move westward to \nwest- northwestward at 5 to 10 kt during the next few days, \nremaining well offshore of southern Mexico. A large area of fresh\nto strong winds and rough seas surround this low center, and \nthese winds and seas are expected to increase over the next day \nor so. A Gale Warning has been issued as a result, for Wed into \nThu. There is a high chance of tropical formation of this low \nwithin the next 48 hours. \n", "title": "Eastern Pacific Tropical Weather Discussion", "id": "1220549662880759810", "issued": "2026-10-21T04:05:00Z", "wmo": "AXPZ20", "source": "NOAA/NWS National Hurricane Center, received via the National Weather Wire Service", "page": "https://hurricane.terrapin.com/text/1220549662880759810"}