{"msg": "542\nAXPZ20 KNHC 141527\nTWDEP \nTropical Weather Discussion\nNWS National Hurricane Center Miami FL\n1605 UTC Fri Aug 14 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 1200 UTC surface analysis and satellite imagery through\n1500 UTC.\n...SPECIAL FEATURES...\nTropical Storm Hernan is centered near 15.4N 132.1W at 14/1500\nUTC, moving south at 8 kt. Estimated minimum central pressure is\n1004 mb. Maximum sustained wind speed is 35 kt with gusts to 45\nkt. Peak seas are around 12 ft or 4 m. Hernan has scattered\nmoderate and isolated strong convection within 180 NM in the NE\nsemicircle. Hernan is forecast to weaken to a tropical depression\ntoday and a post-tropical cyclone early Saturday.Please read the\nlatest HIGH SEAS FORECAST issued by the National Hurricane \nCenter at website \n- https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml and the latest \nHernan NHC Forecast/Advisory and Public Advisory at \nwww.hurricanes.gov for more details.\n...TROPICAL WAVES...\nThe axis of a tropical wave is near 97W north of the Equator to\nsouthern Mexico just west of the Gulf of Tehuantepec, moving \nwest around 10 kt. Nearby convection is discussed in the \nITCZ/monsoon trough section below.\n...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...\nThe monsoon trough extends from coastal Costa Rica at 09N83W to\n08N104W. The ITCZ begins there and extends to 12N128W. Scattered\nmoderate and isolated strong convection is noted north of 04N\neast of 83W, from 04N-12N between 91W-107W, from 03N-15N between\n113W-129W, and from 17N-21N between 125W-129W.\n...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...\nFresh to locally strong N gap winds are occurring over the Gulf\nof Tehuantepec this morning. Elsewhere winds are moderate or\nweaker. Sea are 5-7 ft over the Gulf of Tehuantepec, 4-6 ft over\nthe remaining Pacific waters, and 1-4 ft over the Gulf of\nCalifornia. No significant deep convection is occurring.\nFor the forecast, high pressure over the Gulf of America will \ncontinue to force pulses of fresh to strong N winds over the Gulf\nof Tehuantepec for the next several days. Additionally, moderate\nto fresh NW winds are forecast off of the Baja California \npeninsula through the weekend. Elsewhere, winds and seas should \nremain quiescent until at least early next week.\n...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, \nAND WITHIN 750 NM OF ECUADOR...\nFresh to strong NE to E gap winds are observed this morning over\nthe Gulf of Papagayo region with seas 5-7 ft. Elsewhere, winds \nare moderate or weaker across forecast waters. Seas are 3-7 ft in\nSW swell over the remainder of forecast waters. Scattered\nmoderate and isolated strong convection is noted north of 04N\neast of 83W.\nFor the forecast, high pressure over the W Caribbean is \ncontributing toward fresh to strong E gap winds over the Gulf of \nPapagayo region through Sun night before weakening early next \nweek. Looking ahead, large S swell should begin impacting the \nequatorial waters on Mon. \n...REMAINDER OF THE AREA...\nPlease see Special Features section above for more on Tropical \nStorm Hernan. \nSurface ridging extends from 30N125W to 20N112W to 14N100W. Aside\nfrom conditions associated with Hernan, the trades north of the\nITCZ/monsoon trough are moderate or weaker and S to SW winds are\nalso moderate or weaker. Long-period SW swell with seas of 8-9 ft\nare occurring south of 03N west of 95W. Elsewhere seas are 6-7 \nft in mixed SW and NE swell. Scattered moderate and isolated \nstrong convection is noted from 17N-21N between 125W-129W in \nassociation with an upper-level trough.\nFor the forecast, Hernan will weaken to a tropical depression \nnear 15.4N 133.0W this evening, become a remnant low and move to \n15.1N 134.5W Sat morning, 15.0N 136.6W Sat evening, 14.9N 138.9W \nSun morning, 15.1N 141.1W Sun evening, and dissipate Mon morning.\nAn area of low pressure could form several hundred miles south \nof the coast of southern Mexico early next week. Some gradual \ndevelopment of this system is possible thereafter while the \nsystem moves westward or west-northwestward well south of Mexico.\nAdditionally, another area of low pressure could form well to \nthe west-southwest of the southern tip of the Baja California \nPeninsula early next week. Gradual additional development of this\nsystem is possible thereafter while it moves generally westward.\n", "title": "Eastern Pacific Tropical Weather Discussion", "id": "1201441522056036359", "issued": "2026-08-14T16:05:00Z", "wmo": "AXPZ20", "source": "NOAA/NWS National Hurricane Center, received via the National Weather Wire Service", "page": "https://hurricane.terrapin.com/text/1201441522056036359"}