{"msg": "987\nAXPZ20 KNHC 101510\nTWDEP \nTropical Weather Discussion\nNWS National Hurricane Center Miami FL\n1605 UTC Tue Nov 10 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\n1450 UTC.\n...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...\nThe monsoon trough extends from 1011 mb low pressure on the coast\nof NW Colombia at 10.5N74.5W to the Gulf of Panama at 07N79.5W \nto along the coast of western Panama and Costa Rica to 1011 mb \nlow pressure at 10N92.5W to 06.5N96W. The ITCZ stretches from \n06.5N96W to 05N129W where it ends due to a NE to SW surface \ntrough to the W. Scattered moderate to isolated strong convection\nis observed from 03.4S to 02N between 78.5W and 83W, from 04N to\n06.5N between 77W and 82W, within 90 nm in the N quadrant of the\nlow at 10N92.5W, from 03N to 12N between 102W and 121W, and from\n00N to 15N between 121W and 140W.\n...OFFSHORE WATERS WITHIN 250 NM OF MEXICO...\nThe tight pressure gradient between a 1022 mb high pressure\nsystem over the southern United States and lower pressures in \nthe deep tropics sustains fresh to strong northerly winds and \nseas of 5-7 ft across the Gulf of Tehuantepec basin. Meanwhile,\nbroad ridging extends southeastward across the Baja California\nwaters to the Revillagigedo Islands, supporting moderate or \nweaker winds across the remainder of the Mexican offshore waters.\nLong-period NW swell is producing seas of 7-11 ft in the \noffshore waters of Baja California north of Cabo San Lazaro, \nwith the highest seas occurring west of Guadalupe island. \nElsewhere, slight to moderate seas prevail.\nFor the forecast, fresh northerly winds and rough seas around 8 \nft will pulse to strong to locally near gale-force at night \nacross the Gulf of Tehuantepec through the remainder of the week. \nRough seas in NW swell will continue across the Baja offshore \nwaters, then begin to diminish tonight through Thu. Looking \nahead, fresh winds and rough seas approaching 12 ft are expected\nto reach the offshore waters of Baja California on Fri, \nassociated with a frontal system. Yet a larger NW swell arriving \nSat will produce very rough seas to 19 ft. Rough seas will reach\nall the way to near 100W by early next week.\n...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, \nAND WITHIN 750 NM OF ECUADOR...\nHigh pressure centered north of the the Caribbean supports\nmoderate to fresh easterly trade winds and seas of 4-6 ft in the\nGulf of Papagayo region. Moderate to locally fresh northerly \nwinds and seas of 3-5 ft are occurring in the Gulf of Panama. \nElsewhere, moderate or weaker winds and moderate seas prevail.\nFor the forecast, fresh to locally strong easterly trade winds \nwill funnel across the Papagayo region and extend to 90W through \nWed night, then diminish into the weekend. Moderate to locally \nfresh winds will pulse in the western Gulf of Panama through Wed \nmorning. Otherwise, moderate or weaker winds and moderate seas \nin merging SW and NW swell will prevail, except locally rough \nSSW of the Galapagos Islands through the week.\n...REMAINDER OF THE AREA...\nBroad high pressure covers the northern waters. A surface trough\nis to the south analyzed from 15N125W to 06N136W. The pressure\ngradient between the ridging and trough supports moderate to\nfresh winds from 11N to 21N to the W of the trough. Moderate or\nweaker winds dominate the remainder of the open waters. Rough NW\nswell with heights of 8-11 ft covers the majority of the waters N\nof 10N and W of 115W. Merging SW and NW swell supports rough seas\nof 7-10 ft S of 10N between 100W and 130W. Moderate seas prevail\nacross the remainder of the open waters.\nFor the forecast, high pressure combined with troughing over the\nW-central waters will support moderate to fresh easterly winds \nand rough seas across the trade waters during the next few days. \nNew large NW swell moving into the north and western waters will \nreach from 10N140W to the Revillagigedo Islands tonight. The \nmixed swell over the equatorial waters will persist for the next \nseveral days. Looking ahead, a strong cold front will reach our \nNW border at 30N140W by midday Wed, bringing with it fresh to \nstrong NW winds and very large seas in NW swell north of 20N \nthrough the end of the week. Even larger reinforcing NW swell may\narrive Fri afternoon to the NW waters, possibly in excess of 20 \nft. This set of swell with seas of 8 ft or greater will cover the\nwaters N of 05N and W of 110W by late Sat night.\n", "title": "Eastern Pacific Tropical Weather Discussion", "id": "1226352269814333442", "issued": "2026-11-10T16:05:00Z", "wmo": "AXPZ20", "source": "NOAA/NWS National Hurricane Center, received via the National Weather Wire Service", "page": "https://hurricane.terrapin.com/text/1226352269814333442"}