--------------------------------------------------------------------------- TROPICAL WEATHER DISCUSSION (EASTERN PACIFIC AREA) MESSAGES T1T2: AX A1A2: PZ Date: 2026-04-20 --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC200324_C_KWBC_20260420032433_38666572-1589-TWDEP.txt ****0000005739**** AXPZ20 KNHC 200324 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Mon Apr 20 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 0300 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: High pressure ridging will build southward along eastern Mexico in the wake of a late- season cold front that is moving across the Gulf of America. The pressure gradient between the ridge and relatively lower pressure south of Mexico will tighten enough to support a brief occurrence of gale-force northerly winds in the Gulf of Tehuantepec tonight into Mon morning. The gradient will then relax enough as high pressure north of the area shifts eastward during Mon allowing for the gale winds to diminish to strong speeds. Seas with this upcoming gale event are expected to peak to around 11 or 12 ft. Lingering rough seas will subside Tue. Marine interests transiting through, or near the Gulf of Tehuantepec should take the necessary action to avoid hazardous marine conditions over the affected waters. Please read the latest High Seas Forecast issued by the National Hurricane Center at website https:///www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from low pressure in northwest Colombia southwestward to 08N83W to 1010 mb low pressure near 04N95W and to 04N111W, where it transitions to the ITCZ to 05N126W to and to beyond 05N140W. Scattered moderate convection is depicted from 00N to 07.5N between 87W and 98W. Numerous moderate convection is depicted from 01.5S to 08N between 113W and 135W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section above for information on a soon to begin gap wind gale-event in the Gulf of Tehuantepec. Relatively weak high pressure is over the area. The pressure gradient between the high pressure and lower pressures over Mexico is generally supporting gentle to moderate northwest winds west of the Baja California Peninsula. Elsewhere over the Pacific, winds are moderate or weaker in speeds. Seas are 3 to 5 ft over the offshore waters, with northwest swell west of Baja California and in mixed south and northwest swell elsewhere. Mostly light and variable winds are in the Gulf of California along with seas 1 to 3 ft. For the forecast, aside from the upcoming Tehuantepec gale event, rather quiet conditions will remain over the forecast waters through Tue. A set of northwest swell will move through the waters west of Baja California Norte Tue night into Wed, but it will be subsiding as it does. Seas are expected to peak to around 8 ft with this swell. Fresh to locally strong northwest winds are forecast over the Pacific waters of Baja California beginning Wed night. Northwest winds will pulse to moderate to fresh speeds at night offshore southwestern Mexico Tue through Fri. Elsewhere, mostly light to gentle west to northwest winds are expected through the end of the week. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gentle to moderate north to northeast winds are found over the Gulf Panama along with seas around 3 ft. Light to gentle variable winds prevail elsewhere along with seas 4 to 6 ft also due to a long-period south to southwest swell. Scattered showers and patches of light rain are in the vicinity of the Galapagos Islands. For the forecast, winds may pulse to fresh speeds in the Gulf of Papagayo region late at night and into the mornings through Tue. Otherwise, rather tranquil conditions are expected to hold over the Central American and the equatorial waters for the next few days. ...REMAINDER OF THE AREA... A late-season cold front is over the northwest part of the area along a position from near 30N130W to 25N140W. It is preceded by gentle to moderate southwest winds north 27N and east to near 127W, and followed by mostly moderate northwest to north winds. Seas are 4 to 6 ft with these winds. High pressure ridging is building southeastward behind the front while relatively weak high pressure is to its southeast reaching east to near 111W and south to near 16.5N. A weak pressure gradient between the ridge and relatively lower pressure to its south associated to the ITCZ is sustaining an area of moderate northeast to east trades over the western part of the domain from 13N to 17N west of about 123W. Seas within these trades are 5 to 6 ft in mixed swell. For the forecast, little overall change is expected in the present synoptic pattern into early part of the week, with respect to winds and seas. The aforementioned cold front will move east- southeastward and weaken as moves across the north-central and northeast forecast waters from late Mon through Tue. The main impacts from this front will be from a set of large northwest to north swell that will trail the front as seas are expected to build to a maximum of 12 or 13 ft on Mon night over the far northwest waters. Seas of 8 ft and greater will reach to a line from near 30N120W to 22N130W and to 21N140W by late Tue, then begin to subside through Wed. $$ KRV ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC200930_C_KWBC_20260420093136_38666572-1611-TWDEP.txt ****0000005797**** AXPZ20 KNHC 200930 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Mon Apr 20 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 0800 UTC surface analysis and satellite imagery through 0600 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: High pressure ridging will build southward along eastern Mexico in the wake of a late- season cold front that is moving across the Gulf of America. The pressure gradient between the ridge and relatively lower pressure south of Mexico has tighten enough to support a brief occurrence of gale-force northerly winds in the Gulf of Tehuantepec through late this morning. The gradient will then relax enough as high pressure north of the area shifts eastward later today allowing for the gale winds to diminish to strong speeds. Seas with this gale event are expected to peak to around 11 or 12 ft. Lingering rough seas will subside Tue evening. Marine interests transiting through, or near the Gulf of Tehuantepec should take the necessary action to avoid hazardous marine conditions over the affected waters. Please read the latest High Seas Forecast issued by the National Hurricane Center at website https:///www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from a low pressure in northwest Colombia southwestward to 08N82W to a 1010 mb low pressure near 06N95W and to 03.5N111W. The ITCZ extends from 03.5N111W to 05N125W to and to beyond 04N140W. Scattered moderate convection is depicted from 02N to 08N between 87W and 97W. Scattered moderate convection is also depicted from 00N to 08N between 112W and 135W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section above for information on a soon to begin gap wind gale-event in the Gulf of Tehuantepec. Relatively weak high pressure is over the area. The pressure gradient between the high pressure and lower pressures over Mexico is generally supporting gentle to locally moderate northwest winds west of the Baja California Peninsula. Elsewhere over the Pacific, winds are gentle or weaker in speeds. Seas are 3 to 5 ft over the offshore waters, with northwest swell west of Baja California and in mixed south and northwest swell elsewhere. Mostly light and variable winds are in the Gulf of California along with seas 1 to 3 ft. For the forecast, aside from the upcoming Tehuantepec gale event, rather quiet conditions will remain over the forecast waters through Tue. A set of northwest swell will move through the waters west of Baja California Norte Tue night into Wed, but it will be subsiding as it does. Seas are expected to peak to around 8 ft with this swell. Fresh to locally strong northwest winds are forecast over the Pacific waters of Baja California beginning Wed night. Northwest winds will pulse to moderate to fresh speeds at night offshore southwestern Mexico Tue through Fri. Elsewhere, mostly light to gentle west to northwest winds are expected through the end of the week. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gentle to moderate north to northeast winds are found over the Gulf of Papagayo and over the Gulf of Panama along with seas 2 to 4 ft. Light to gentle variable winds prevail elsewhere along with seas 4 to 6 ft also due to a long- period south to southwest swell. Scattered showers and patches of light rain are in the vicinity of the Galapagos Islands. For the forecast, winds may pulse to fresh speeds in the Gulf of Papagayo region late at night and into the mornings through Tue. Otherwise, rather tranquil conditions are expected to hold over the Central American and the equatorial waters for the next few days. ...REMAINDER OF THE AREA... A late-season cold front is over the northwest part of the area along a position from near 30N128.5W to 24.5N140W. It is preceded by gentle to moderate southwest winds north 27N and east to near 124.5W, and followed by mostly moderate northwest to north winds. Seas are 4 to 8 ft with these winds. High pressure ridging is building southeastward behind the front while relatively weak high pressure is to its southeast reaching east to near 117W and south to near 19N. A weak pressure gradient between the ridge and relatively lower pressure to its south associated to the ITCZ is sustaining an area of moderate northeast to east trades over the western part of the domain from 13N to 17N west of about 121W. Seas within these trades are 5 to 6 ft in mixed swell. For the forecast, little overall change is expected in the present synoptic pattern into early part of the week, with respect to winds and seas. The aforementioned cold front will move east- southeastward and weaken as moves across the north-central and northeast forecast waters from late Mon through Tue. The main impacts from this front will be from a set of large northwest to north swell that will trail the front as seas are expected to build to a maximum of 12 or 13 ft on Mon night over the far northwest waters. Seas of 8 ft and greater will reach to a line from near 30N120W to 22N130W and to 20N140W by late Tue, then begin to subside through Wed. $$ KRV ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC201550_C_KWBC_20260420155140_9109880-1547-TWDEP.txt ****0000006028**** AXPZ20 KNHC 201550 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Mon Apr 20 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 1200 UTC surface analysis and satellite imagery through 1545 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: High pressure ridging has surged south across southeastern Mexico, and as a result the pressure gradient has tightened enough between it and lower pressure present south of Mexico to bring strong to minimal gale-force north to northeast winds to the Gulf of Tehuantepec region this morning. An overnight altimeter satellite pass indicates seas reaching to around 9 ft with these winds. The gradient will relax enough early this afternoon allowing for the gale winds to diminish to strong speeds. Before that happens, seas are expected to peak to, or near 11 ft. Lingering rough seas will subside Tue evening. Marine interests transiting through, or near the Gulf of Tehuantepec should take the necessary action to avoid these marine conditions. Please read the latest High Seas Forecast issued by the National Hurricane Center at website https:///www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from a low pressure in northwest Colombia southwestward to 08N82W to a 1010 mb low pressure near 06N95W and to 03.5N111W. The ITCZ extends from 03.5N111W to 05N125W to beyond 04N140W. Scattered moderate convection is depicted from 02N to 08N between 87W and 97W. Scattered moderate convection is also depicted from 00N to 08N between 112W and 135W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section above for information on a started gap wind gale-event in the Gulf of Tehuantepec. Relatively weak high pressure is over the area. The pressure gradient between the high pressure and lower pressures over Mexico is generally supporting gentle northwest winds west of the Baja California Peninsula, with the exception of fresh northwest winds just south of Cabo San Lucas. Elsewhere over the Pacific, winds are gentle or weaker in speeds. Seas are 3 to 5 ft over the offshore waters, with northwest swell west of Baja California and mostly in south swell elsewhere. Mostly light and variable winds are in the Gulf of California, excerpt for moderate winds south to southwest winds in the northern portion. Seas are 1 to 3 ft in the Gulf, except for slightly higher seas of 2 to 3 ft in the southern section. For the forecast, aside from the ongoing Gulf of Tehuantepec gale event, rather quiet conditions will remain over the forecast waters through Tue. A set of northwest swell will move through the waters west of Baja California Norte Tue night into Wed, but will be subsiding as it does. Seas are expected to peak to around 8 ft with this swell. Fresh to locally strong northwest winds are forecast over the Pacific waters of Baja California beginning Wed night. Northwest winds will pulse to moderate to fresh speeds at night offshore southwestern Mexico Tue through Fri. Elsewhere, mostly light to gentle west to northwest winds are expected through the end of the week. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gentle to moderate north to northeast winds are found over the Gulf of Papagayo and over the Gulf of Panama along with seas 2 to 4 ft. Light to gentle variable winds prevail elsewhere along with seas 4 to 6 ft also due to a long- period south to southwest swell. Scattered showers and patches of light rain are in the vicinity of the Galapagos Islands. For the forecast, winds may pulse to fresh speeds in the Gulf of Papagayo region late at night and into the mornings through Tue. Otherwise, rather tranquil conditions are expected remain over the Central American and the equatorial waters through the end of the week. ...REMAINDER OF THE AREA... A late-season cold front is over the northwest part of the area from near 30N127W to 24.5N140W. Gentle to moderate southwest winds are within 120 nm east of the front north of 26N. The front is followed by moderate to fresh west to northwest winds. A set of long-period northwest to north swell trails the front north about 27N and west of a line from 30N132W to 27N140W. High pressure ridging is building southeastward behind the front while relatively weak high pressure is to its southeast as a 1016 mb high center is analyzed near 24N125W. A weak pressure gradient between the ridge and relatively lower pressure to its south associated to the ITCZ is sustaining an area of moderate northeast to east trades over the western part of the discussion area from 13N to 17N and west of about 128W. Seas over this area are 5 to 6 ft primarily in north swell. For the forecast, little overall change is expected in the present synoptic pattern into early part of the week, with respect to winds and seas. The aforementioned cold front will move east- southeastward and weaken as moves across the north-central and northeast forecast waters from late Mon through Tue. The main impacts from this front will be from a set of large northwest to north swell that will trail the front as seas are expected to build to a maximum of 12 or 13 ft on Mon night over the far northwest waters. Seas of 8 ft and greater will reach to a line from near 30N120W to 22N130W and to 20N140W by late Tue, then begin to subside through Wed. $$ Aguirre ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC201558_C_KWBC_20260420155938_38666572-1629-TWDEP.txt ****0000005762**** AXPZ20 KNHC 201558 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Mon Apr 20 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 1200 UTC surface analysis and satellite imagery through 1545 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: High pressure ridging has surged south across southeastern Mexico, and as a result the pressure gradient has tightened enough between it and lower pressure present south of Mexico to bring strong to minimal gale-force north to northeast winds to the Gulf of Tehuantepec region this morning. An overnight altimeter satellite pass indicates seas reaching to around 9 ft with these winds. The gradient will relax enough early this afternoon allowing for the gale winds to diminish to strong speeds. Before that happens, seas are expected to peak to, or near 11 ft. Lingering rough seas will subside Tue evening. Marine interests transiting through, or near the Gulf of Tehuantepec should stay tuned to the latest forecast. Please read the latest High Seas Forecast issued by the National Hurricane Center at website https:///www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from a low pressure in northwest Colombia southwestward to 08N82W to a 1010 mb low pressure near 06N95W and to 03.5N111W. The ITCZ extends from 03.5N111W to 05N125W to beyond 04N140W. Scattered moderate convection is depicted from 02N to 08N between 87W and 97W. Scattered moderate convection is also depicted from 00N to 08N between 112W and 135W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section above for information on a recently started gap wind gale-event in the Gulf of Tehuantepec. Relatively weak high pressure is over the area. The pressure gradient between the high pressure and lower pressures over Mexico is generally supporting gentle northwest winds west of the Baja California Peninsula, with the exception of fresh northwest winds just south of Cabo San Lucas. Elsewhere over the Pacific, winds are gentle or weaker in speeds. Seas are 3 to 5 ft over the offshore waters, with northwest swell west of Baja California and mostly in south swell elsewhere. Mostly light and variable winds are in the Gulf of California, excerpt for moderate south to southwest winds in the northern portion. Seas are 1 to 3 ft in the Gulf, except for slightly higher seas of 2 to 4 ft in the southern section. For the forecast, aside from the ongoing Gulf of Tehuantepec gale event, rather quiet conditions will remain over the forecast waters through Tue. A set of northwest swell will move through the waters west of Baja California Norte Tue night into Wed, but will be subsiding as it does. Seas are expected to peak to around 8 ft with this swell. Fresh to locally strong northwest winds are forecast over the Pacific waters of Baja California beginning Wed night. Northwest winds will pulse to moderate to fresh speeds at night offshore southwestern Mexico Tue through Fri. Elsewhere, mostly light to gentle west to northwest winds are expected through the end of the week. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Gentle to moderate north to northeast winds are found over the Gulf of Papagayo and over the Gulf of Panama along with seas 2 to 4 ft. Light to gentle variable winds prevail elsewhere along with seas 4 to 6 ft also due to a long-period south to southwest swell. Scattered showers and patches of light rain are in the vicinity of the Galapagos Islands. For the forecast, winds may pulse to fresh speeds in the Gulf of Papagayo region late at night and into the mornings through Tue. Otherwise, rather tranquil conditions are expected remain over the Central American and the equatorial waters through the end of the week. ...REMAINDER OF THE AREA... A late-season cold front is over the northwest part of the area from near 30N127W to 24.5N140W. Gentle to moderate southwest winds are within 120 nm east of the front north of 26N. The front is followed by moderate to fresh west to northwest winds. A set of long-period northwest to north swell trails the front north about 27N and west of a line from 30N132W to 27N140W. High pressure ridging is building southeastward behind the front while relatively weak high pressure is to its southeast as a 1016 mb high center is analyzed near 24N125W. A weak pressure gradient between the ridge and relatively lower pressure to its south associated to the ITCZ is sustaining an area of moderate northeast to east trades over the western part of the discussion area from 13N to 17N and west of about 128W. Seas over this area are 5 to 6 ft primarily in north swell. For the forecast, little overall change is expected in the present synoptic pattern through Wed, with respect to winds and seas. The aforementioned cold front will move east-southeastward and weaken through Tue. A set of northwest to north swell trailing the front will raise seas to around 12 ft tonight into early Tue over the far northwest waters. The swell will then decay over the central and western waters starting Wed. $$ Aguirre ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC202134_C_KWBC_20260420213441_38666572-1647-TWDEP.txt ****0000006302**** AXPZ20 KNHC 202134 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Mon Apr 20 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 1800 UTC surface analysis and satellite imagery through 2115 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: A tight pressure gradient between high pressure ridging along eastern Mexico and lower pressure to the south is sustaining minimal gale-force north to northeast winds over the northern Gulf of Tehuantepec region. The gradient will relax by early this evening allowing for the gale winds to diminish to strong speeds. Seas with these winds are peaking to near 11 ft. Left over rough seas will subside Tue evening. Marine interests transiting through, or near the Gulf of Tehuantepec should stay tuned to the latest forecast. Please read the latest High Seas Forecast issued by the National Hurricane Center at website https:///www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A trough axis extends from low pressure along the coast of Colombia near 11N76W 1011 mb southwestward across southern Panamas and to 02N82.5W to 05N90W to a 1011 mb low at 05N97W and to 03N101W, where it transitions to the ITCZ to 04N110W to 01S120W. Scattered moderate to isolated strong convection is within 120 nm north of the ITCZ between 115W-121W. Scattered moderate convection is within 120 nm north of the trough between 85W-89W. A second ITCZ extends from near 07N129W to beyond 05N140W. Scattered moderate to isolated strong convection is within 60 nm south of the ITCZ between 136W-139W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section above for information on an ongoing, but soon to end, gap wind gale-event in the Gulf of Tehuantepec. Relatively weak high pressure is over the area. The pressure gradient between the high pressure and lower pressures over Mexico is generally supporting gentle northwest winds west of the Baja California Peninsula, with the exception of fresh northwest winds just south of Cabo San Lucas as seen in a scatterometer satellite pass. Elsewhere over the regional waters, winds are gentle or weaker in speeds. Seas are 3 to 5 ft over the offshore waters, with northwest swell west of Baja California and mostly in long-period south swell elsewhere. Mostly light and variable winds are in the Gulf of California, excerpt for moderate south to southwest winds in the northern portion. Seas are 1 to 3 ft in the Gulf, except for slightly higher seas of 3 to 4 ft in the southern section. For the forecast, aside from the ongoing Gulf of Tehuantepec gale event, rather quiet conditions will remain over the forecast waters through Tue. A set of northwest swell will move through the waters west of Baja California Norte Tue night into Wed, but will be subsiding as it does. Seas are expected to peak to around 8 ft with this swell. Fresh to locally strong northwest winds are forecast over the Pacific waters of Baja California beginning Wed night. Northwest winds will pulse to moderate to fresh speeds at night offshore southwestern Mexico Tue through Fri. Elsewhere, mostly light to gentle west to northwest winds are expected through the end of the week. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to fresh northeast to east are in the Gulf of Papagayo as indicated in the latest scatterometer satellite data pass. Seas are 4 to 6 ft with these winds. Moderate north to northeast winds are in the Gulf of Panama. Seas are 4 to 6 ft in long- period south to southwest swell. Light to gentle variable winds prevail elsewhere along with seas 4 to 6 ft also due to a long- period south to southwest swell. Isolated showers and thunderstorms are over waters between 85W and the Galapagos Islands, including over some of the islands. For the forecast, winds may pulse to fresh speeds in the Gulf of Papagayo region late tonight and Tue morning and again late Tue night into Wed morning. Otherwise, rather tranquil conditions are expected remain over the Central American and the equatorial waters through the end of the week. ...REMAINDER OF THE AREA... A late-season cold front is over the northwest part of the area from near 30N128W to 24N140W. Gentle to moderate southwest winds are within 120 nm east of the front north of 26.5N. The front is followed by gentle to moderate northwest to north winds, except north of 28N where the latest scatterometer satellite data pass shows moderate to fresh northwest winds. A set of long-period northwest to north swell follows the front north about 27N and west of a line from 30N131W to 27N140W. High pressure ridging is building southeastward behind the front while relatively weak high pressure is to its southeast as a 1018 mb high center is analyzed near 24N135W. A weak pressure gradient between the ridge and relatively lower pressure to its south associated to the ITCZ is sustaining an area of moderate northeast to east trades over the western part of the discussion area from 14N to 18N and west of about 133W, and also from 05N to 15N between 114W and 133W. Seas over this area are 5 to 7 ft primarily in north swell. For the forecast, little overall change is expected in the present synoptic pattern through Wed, with respect to winds and seas. The aforementioned cold front will move east-southeastward, weakening Tue and dissipating Wed. The aforementioned swell set behind the front is forecast to raise seas to around 12 ft tonight into early Tue over the far northwest waters. The swell set will then gradually shrink in coverage area over the west-central waters through late Thu. $$ Aguirre ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC202305AAA_C_KWBC_20260420230642_38666572-1654-TWDEP.txt ****0000006326**** AXPZ20 KNHC 202305 AAA TWDEP Tropical Weather Discussion...Updated NWS National Hurricane Center Miami FL 2305 UTC Mon Apr 20 2026 Updated Remainder of the Area section 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 1800 UTC surface analysis and satellite imagery through 2115 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: A tight pressure gradient between high pressure ridging along eastern Mexico and lower pressure to the south is sustaining minimal gale-force north to northeast winds over the northern Gulf of Tehuantepec region. The gradient will relax by early this evening allowing for the gale winds to diminish to strong speeds. Seas with these winds are peaking to near 11 ft. Leftover rough seas will subside Tue evening. Marine interests transiting through, or near the Gulf of Tehuantepec should stay tuned to the latest forecast. Please read the latest High Seas Forecast issued by the National Hurricane Center at website https:///www.nhc.noaa.gov/text/MIAHSFEP2.shtml for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A trough axis extends from low pressure along the coast of Colombia near 11N76W 1011 mb southwestward across southern Panamas and to 02N82.5W to 05N90W to a 1011 mb low at 05N97W and to 03N101W, where it transitions to the ITCZ to 04N110W to 01S120W. Scattered moderate to isolated strong convection is within 120 nm north of the ITCZ between 115W-121W. Scattered moderate convection is within 120 nm north of the trough between 85W-89W. A second ITCZ extends from near 07N129W to beyond 05N140W. Scattered moderate to isolated strong convection is within 60 nm south of the ITCZ between 136W-139W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section above for information on an ongoing, but soon to end, gap wind gale-event in the Gulf of Tehuantepec. Relatively weak high pressure is over the area. The pressure gradient between the high pressure and lower pressures over Mexico is generally supporting gentle northwest winds west of the Baja California Peninsula, with the exception of fresh northwest winds just south of Cabo San Lucas as seen in a scatterometer satellite pass. Elsewhere over the regional waters, winds are gentle or weaker in speeds. Seas are 3 to 5 ft over the offshore waters, with northwest swell west of Baja California and mostly in long-period south swell elsewhere. Mostly light and variable winds are in the Gulf of California, except for moderate south to southwest winds in the northern portion. Seas are 1 to 3 ft in the Gulf, except for slightly higher seas of 3 to 4 ft in the southern section. For the forecast, aside from the ongoing Gulf of Tehuantepec gale event, rather quiet conditions will remain over the forecast waters through Tue. A set of northwest swell will move through the waters west of Baja California Norte Tue night into Wed, but will be subsiding as it does. Seas are expected to peak to around 8 ft with this swell. Fresh to locally strong northwest winds are forecast over the Pacific waters of Baja California beginning Wed night. Northwest winds will pulse to moderate to fresh speeds at night offshore southwestern Mexico Tue through Fri. Elsewhere, mostly light to gentle west to northwest winds are expected through the end of the week. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Moderate to fresh northeast to east winds are in the Gulf of Papagayo as indicated in the latest scatterometer satellite data pass. Seas are 4 to 6 ft with these winds. Moderate north to northeast winds are in the Gulf of Panama. Seas are 4 to 6 ft in long-period south to southwest swell. Light to gentle variable winds prevail elsewhere along with seas 4 to 6 ft also due to a long- period south to southwest swell. Isolated showers and thunderstorms are over waters between 85W and the Galapagos Islands, including over some of these islands. For the forecast, winds may pulse to fresh speeds in the Gulf of Papagayo region late tonight and Tue morning and again late Tue night into Wed morning. Otherwise, rather tranquil conditions are expected to continue over the Central American and the equatorial waters through the end of the week. ...REMAINDER OF THE AREA...Updated A late-season cold front is over the northwest part of the area from near 30N128W to 24N140W. Gentle to moderate southwest winds are within 120 nm east of the front north of 26.5N. The front is followed by gentle to moderate northwest to north winds, except north of 28N where the latest scatterometer satellite data pass shows moderate to fresh northwest winds. A set of long-period northwest to north swell follows the front north about 27N and west of a line from 30N131W to 27N140W. High pressure ridging is building southeastward behind the front while relatively weak high pressure is to its southeast as a 1018 mb high center is analyzed near 24N135W. A weak pressure gradient between the ridge and relatively lower pressure to its south associated to the ITCZ is sustaining an area of moderate northeast to east trades over the western part of the discussion area from 14N to 18N and west of about 133W, and also from 05N to 15N between 114W and 133W. Seas over this area are 5 to 7 ft primarily in north swell. For the forecast, the aforementioned cold front will move east- southeastward, weakening Tue and dissipating Wed. The swell set behind the front is forecast to raise seas to around 12 ft tonight into early Tue over the far northwest waters. The swell will then gradually shrink in coverage area over the west-central waters through late Thu. Little overall changes are expected with winds and seas elsewhere through Thu. $$ Aguirre ########################### END OF MESSAGE SET ############################