--------------------------------------------------------------------------- TROPICAL WEATHER DISCUSSION (EASTERN PACIFIC AREA) MESSAGES T1T2: AX A1A2: PZ Date: 2026-08-09 --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC090408_C_KWBC_20260809040847_47448518-489-TWDEP.txt ****0000004704**** AXPZ20 KNHC 090408 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sun Aug 9 2026 Tropical Weather Discussion for the eastern Pacific Ocean from 03.4S to 30N, east of 120W including the Gulf of California, and from the Equator to 30N, between 120W and 140W. The following information is based on satellite imagery, weather observations, radar, and meteorological analysis. Based on 0000 UTC surface analysis and satellite imagery through 0350 UTC. ...TROPICAL WAVES... A tropical wave is SW of Jalisco, Mexico with axis near 109W, extending from 08N to 17N, and moving westward at 20 kt. There is no significant convection associated with this wave. A tropical wave extends from 09N to 16N with axis near 119W, moving westward at 15 kt. Scattered moderate isolated strong convection is active from 04N to 15N between 110W and 125W. A tropical wave extends from 09N to 17N with axis near 139W, moving westward at 15-20 kt. Scattered moderate isolated strong convection is active from 01N to 18N between 126W and 142W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 07N77W to 09N84W to 08N90W. Segments of the ITCZ extend from 06N95W to 07N110W to 12N118W, and from 10N121W to 11N138W. Aside from the convection associated with the tropical waves, scattered moderate convection is from 08N to 15N between 93W and 106W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Fresh to strong N gap winds prevail in the Gulf of Tehuantepec, reaching about 14N. Rough seas to 9 ft are associated with these strong gap winds. Moderate NW winds are noted off Baja California while moderate to fresh SE winds blow along the central Gulf of California. Elsewhere, winds are light to gentle and seas slight to moderate in SW swell. Outside of the Gulf of Tehuantepec, seas are 4-6 ft except for 1-3 ft in the Gulf of California. For the forecast, fresh to strong gap winds and rough seas are expected across the Gulf of Tehuantepec through early next week. The pressure gradient between high pressure NW of the area and lower pressure over the Colorado River Valley will support fresh to locally strong southerly winds across the southern and northern Gulf of California through late Mon. Elsewhere, a moderate pressure gradient will support mostly gentle to moderate winds across the remainder offshore waters of Mexico. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to near gale-force gap winds are across the Gulf of Papagayo. A plume of these winds extend as far west as 360 nm downstream, and associated seas are likely 6-9 ft. Moderate to fresh N to NE gap winds are also active across the Gulf of Panama. Elsewhere, mostly gentle breezes and 4-6 ft seas are noted. For the forecast, fresh to strong NE to E gap winds will prevail in the Papagayo region through Wed, reaching near gale-force briefly tonight through late Sun. The gap wind event will produce a fetch of moderate to locally fresh easterlies across the outer offshore waters of Guatemala and El Salvador. Moderate or weaker southerly winds and moderate seas will continue across the offshores between Ecuador and the Galapagos through the forecast period. Light to gentle winds and moderate seas in SW swell are forecast elsewhere through Wed night. ...REMAINDER OF THE AREA... A 1027 mb high near 36N143W extends a ridge across the subtropical E Pacific waters to nearly 115W. The gradient of pressure between this area of high pressure and a tropical wave with axis near 137W is supporting moderate to fresh NE to E winds from 10N to 20N W of 135W. Seas over these waters are 7-8 ft. Large SE swell to 8 ft are found over the waters S of 05N between 115W and 135W. Elsewhere, gentle to moderate winds and moderate seas prevail. For the forecast, persistent fresh trade winds west of 125W will maintain moderate to rough seas through the early part of the week. This will be possibly be followed by developing low pressure along the ITCZ/monsoon trough near 125W by Tue, and a tropical depression could form by midweek while the system moves slowly west-northwestward. Also, an area of low pressure could form well offshore of the southwestern coast of Mexico by the middle of next week. Some gradual development of this system is possible thereafter as it moves generally west-northwestward, although chances for tropical cyclone development remain low. $$ Ramos ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC090945_C_KWBC_20260809094618_49676782-572-TWDEP.txt ****0000005087**** AXPZ20 KNHC 090945 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Sun Aug 9 2026 Tropical Weather Discussion for the eastern Pacific Ocean from 03.4S to 30N, east of 120W including the Gulf of California, and from the Equator to 30N, between 120W and 140W. The following information is based on satellite imagery, weather observations, radar, and meteorological analysis. Based on 0600 UTC surface analysis and satellite imagery through 0920 UTC. ...TROPICAL WAVES... A tropical wave extends from 07N to 18N with axis near 111W, moving westward at 20 kt. Scattered moderate convection is from 06N to 16N between 105W and 115W. A tropical wave extends from 09N to 16N with axis near 120W, moving westward at 15 kt. Scattered moderate isolated strong convection is active from 05N to 15N between 115W and 125W. A tropical wave extends from 08N to 18N with axis near 140W, moving westward at 10-15 kt. Scattered moderate isolated strong convection is active from 03N to 16N between 134W and 144W. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 07N77W to 09N85W to 07N90W. The ITCZ begins near 07N93W to 06N105W to 08N110W. Aside from the convection associated with the tropical waves, numerous moderate to strong convection is offshore Panama and Colombia, and from 02N to 16N between 126W and 135W. Scattered moderate convection is from 08N to 16N between 96W and 105W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Fresh to strong N gap winds prevail in the Gulf of Tehuantepec, reaching about 13N. Rough seas to 9 ft are associated with these strong gap winds. Moderate NW winds are noted off Baja California N of Cabo San Lazaro while moderate to fresh SE winds blow along the northern and central Gulf of California. Elsewhere, winds are light to gentle and seas slight to moderate in SW swell. Outside of the Gulf of Tehuantepec, seas are 4-5 ft except for 1-3 ft in the Gulf of California. For the forecast, fresh to strong gap winds and rough seas are expected across the Gulf of Tehuantepec through Wed morning. The pressure gradient between high pressure NW of the area and lower pressure over the Colorado River Valley will support moderate to fresh southerly winds across the southern and northern Gulf of California through Thu night. Elsewhere, a moderate pressure gradient will support mostly gentle to moderate winds across the remainder offshore waters of Mexico along with moderate seas. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to near gale-force NE to E gap winds are across the Gulf of Papagayo. The plume of these winds extend as far west as 91W, and associated seas are 8-12 ft. Moderate to fresh N gap winds are also active across the Gulf of Panama extending to 06N with 3-5 ft seas. Between Ecuador and the Galapagos, winds are gentle to moderate with 3-6 ft seas. Elsewhere, mostly gentle breezes and 4-5 ft seas are noted in SW swell. For the forecast, fresh to strong NE to E gap winds will prevail in the Papagayo region through Thu night, reaching near gale- force speed tonight and Mon night. The gap wind event will produce a fetch of moderate to locally fresh easterlies across the outer offshore waters of Guatemala and El Salvador. Moderate to fresh NNE winds will pulse in the Gulf of Panama through Tue. Moderate or weaker southerly winds and moderate seas will continue across the offshores between Ecuador and the Galapagos through the forecast period. Otherwise, light to gentle winds and moderate seas in SW swell are forecast elsewhere through Thu night. ...REMAINDER OF THE AREA... A 1027 mb high near 36N142W extends a ridge across the subtropical E Pacific waters to nearly 115W. The gradient of pressure between this area of high pressure and a tropical wave with axis near 139W is supporting moderate to fresh NE to E winds from 07N to 24N W of 120W. Seas over these waters are 7-8 ft. Elsewhere, moderate or weaker winds and moderate seas prevail. For the forecast, persistent fresh trade winds west of 120W will maintain moderate to rough seas through the forecast period. The tropical wave located several hundred miles SW of the southern tip of the Baja California Peninsula is producing a large area of disorganized showers and thunderstorms. Environmental conditions are forecast to be conducive for gradual development, and a tropical depression could form by midweek while the system moves slowly west-northwestward to northwestward across the western portion of the East Pacific. Also, an area of low pressure could form well offshore of the southwestern coast of Mexico by the middle of next week. Only limited development of this system is anticipated thereafter as it moves generally west- northwestward. $$ Ramos ########################### END OF MESSAGE SET ############################