--------------------------------------------------------------------------- TROPICAL WEATHER DISCUSSION (EASTERN PACIFIC AREA) MESSAGES T1T2: AX A1A2: PZ Date: 2026-04-04 --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC040315_C_KWBC_20260404031538_38666572-450-TWDEP.txt ****0000004217**** AXPZ20 KNHC 040315 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sat Apr 4 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 0305 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 08N83W to 06N96W. The ITCZ stretches from 06N96W to 05N115W to 04N133W. A second ITCZ is mainly south of the Equator and runs from 02S87W to 03S115W to beyond 04S140W. No significant convection is noted along these boundaries. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... The pressure gradient between a subtropical ridge centered well northwest of the area and lower pressures across Mexico support moderate to fresh northerly winds in the offshore waters of Baja California. Seas in these waters are 5-8 ft, with the highest seas occurring northwest of Guadalupe Island. Moderate to fresh NW winds and slight seas are found in the northern and central Gulf of California. Light to gentle winds and slight to moderate seas are noted in the southern Gulf of California. In the rest of the Mexican offshore waters, including the Gulf of Tehuantepec, light to gentle winds and moderate seas prevail. For the forecast, a ridge will remain in control of the weather pattern across the offshore waters of Baja California this weekend into early next week generating gentle to moderate NW to N winds. NW swell will also bring locally rough seas off Baja California Norte through Sat morning. Fresh NW to N winds will pulse in the northern Gulf of California tonight and Sat with seas building to around 4 ft. In the long term, strong to near gale-force N gap winds along with rough seas are expected in the Gulf of Tehuantepec Sun night through midweek next week. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... A strong subtropical ridge centered near Bermuda supports fresh to locally strong easterly trade winds and moderate seas across the Gulf of Papagayo region. Farther east, moderate to locally fresh northerly winds and moderate seas are found in the Gulf of Panama. Meanwhile, light to gentle winds and moderate seas dominate the remainder of the basin. For the forecast, fresh to locally strong gap winds are expected during the nighttime and early morning hours in the Papagayo region and downwind to about 88W through midweek next week. Residual southerly swell will maintain moderate seas off Ecuador and near the Galapagos Islands through this weekend. Afterward, seas should gradually subside next week. ...REMAINDER OF THE AREA... A surface trough centered just west of the far northwest waters and an upper level trough combine to produce widespread cloudiness and isolated showers over much of the waters north of 20N. At the surface, the basin is dominated by a 1030 mb high pressure system centered well north of the area. The pressure gradient between this system and lower pressures in the deep tropics results in moderate to fresh easterly winds and seas of 6-8 ft north of 06N and west of 110W. In the remainder of the basin, moderate or lighter winds and moderate seas are prevalent. For the forecast, the pressure gradient around the southern periphery of the ridge and the trough over the NW corner of the forecast region will support moderate to fresh easterly winds and moderate to locally rough seas N of the trough through this evening, then winds will become gentle to moderate by tonight. The trough will move toward the NW. A cold front is forecast to reach 30N140W by Sun night. A new set of NW swell will follow the front, forecast to extend from 30N137W to 23N140W by Mon morning. Seas will briefly build to 8 or 9 ft behind the front by Tue morning. $$ Delgado ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC040317_C_KWBC_20260404031838_38666572-451-TWDEP.txt ****0000004213**** AXPZ20 KNHC 040317 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sat Apr 4 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 0305 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 08N83W to 06N96W. The ITCZ stretches from 06N96W to 05N115W to 04N133W. A second ITCZ is mainly south of the Equator and runs from 02S87W to 03S115W to beyond 04S140W. No significant convection is noted along these boundaries. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... The pressure gradient between a subtropical ridge centered well northwest of the area and lower pressures across Mexico support moderate to fresh northerly winds in the offshore waters of Baja California. Seas in these waters are 5-8 ft, with the highest seas occurring northwest of Guadalupe Island. Moderate to fresh NW winds and slight seas are found in the northern and central Gulf of California. Light to gentle winds and slight to moderate seas are noted in the southern Gulf of California. In the rest of the Mexican offshore waters, including the Gulf of Tehuantepec, light to gentle winds and moderate seas prevail. For the forecast, a ridge will remain in control of the weather pattern across the offshore waters of Baja California this weekend into early next week generating gentle to moderate NW to N winds. NW swell will also bring locally rough seas off Baja California Norte through Sat morning. Fresh NW to N winds will pulse in the northern Gulf of California tonight and Sat with seas building to 4-5 ft. In the long term, strong to near gale-force N gap winds along with rough seas are expected in the Gulf of Tehuantepec Sun night through midweek next week. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... A strong subtropical ridge centered near Bermuda supports fresh to locally strong easterly trade winds and moderate seas across the Gulf of Papagayo region. Farther east, moderate to locally fresh northerly winds and moderate seas are found in the Gulf of Panama. Meanwhile, light to gentle winds and moderate seas dominate the remainder of the basin. For the forecast, fresh to locally strong gap winds are expected during the nighttime and early morning hours in the Papagayo region and downwind to about 88W through midweek next week. Residual southerly swell will maintain moderate seas off Ecuador and near the Galapagos Islands through this weekend. Afterward, seas should gradually subside next week. ...REMAINDER OF THE AREA... A surface trough centered just west of the far northwest waters and an upper level trough combine to produce widespread cloudiness and isolated showers over much of the waters north of 20N. At the surface, the basin is dominated by a 1030 mb high pressure system centered well north of the area. The pressure gradient between this system and lower pressures in the deep tropics results in moderate to fresh easterly winds and seas of 6-8 ft north of 06N and west of 110W. In the remainder of the basin, moderate or lighter winds and moderate seas are prevalent. For the forecast, the pressure gradient around the southern periphery of the ridge and the trough over the NW corner of the forecast region will support moderate to fresh easterly winds and moderate to locally rough seas N of the trough through this evening, then winds will become gentle to moderate by tonight. The trough will move toward the NW. A cold front is forecast to reach 30N140W by Sun night. A new set of NW swell will follow the front, forecast to extend from 30N137W to 23N140W by Mon morning. Seas will briefly build to 8 or 9 ft behind the front by Tue morning. $$ Delgado ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC040910_C_KWBC_20260404091041_38666572-472-TWDEP.txt ****0000004158**** AXPZ20 KNHC 040910 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Sat Apr 4 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 0905 UTC. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 08N82W to 06N96W. The ITCZ stretches from 06N96W to 06N115W to 04N136W. A second ITCZ is mainly south of the Equator and runs from 03S87W to 04S115W to beyond 05S140W. Isolated moderate convection is observed along these boundaries. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A tight pressure gradient between a 1031 mb high pressure system over the High Plains of the United States and lower pressures in Mexico support moderate to locally strong NW winds and seas of 2-5 ft in the central and northern Gulf of California. Moderate to fresh NW winds are present in the offshore waters of Baja California. Seas in these waters are 5-8 ft, with the highest seas occurring northwest of Guadalupe Island. In the remainder of the Mexican offshore waters, including the Gulf of Tehuantepec, light to gentle winds and moderate seas prevail. For the forecast, a cold front will move across the Gulf of America on Sun and the building ridge behind it will support strong to near gale-force N winds along with rough seas in the Gulf of Tehuantepec Sun night through midweek next week. Winds will pulse to gale force Mon and Mon night. Meanwhile, NW swell producing locally rough seas off Baja California Norte will diminish this morning. Fresh NW to N winds will pulse in the northern Gulf of California today with seas up to 5 ft. Moderate to locally fresh NW winds and moderate seas will prevail off Baja California through the forecast period. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... A robust subtropical ridge centered near Bermuda continues to force fresh to strong easterly trade winds and moderate seas across the Gulf of Papagayo region, extending downstream to 89W. Farther east, moderate to locally fresh northerly winds and moderate seas are found in the Gulf of Panama. Meanwhile, light to gentle winds and moderate seas dominate the remainder of the basin. For the forecast, fresh to locally strong gap winds are expected during the nighttime and early morning hours in the Papagayo region and downwind to about 88W through the forecast period. Similarly, moderate to fresh northerly winds will pulse nightly in the Gulf of Panama through at least late next week. Residual southerly swell will maintain moderate seas off Ecuador and near the Galapagos Islands through this weekend. Afterward, seas should gradually subside next week. ...REMAINDER OF THE AREA... A few showers and widespread cloudiness are noted in the far western waters due to a nearby surface trough and divergence aloft from an upper level trough. At the surface, the basin is dominated by a broad subtropical ridge centered well north of the area. The pressure gradient between this system and lower pressures in the deep tropics results in moderate to fresh easterly winds and seas of 6-8 ft north of the ITCZ and west of 110W. In the remainder of the basin, moderate or lighter winds and moderate seas are prevalent. For the forecast, broad ridging will support moderate to locally fresh easterly winds and moderate to locally rough seas across the trade waters into the middle of next week. A cold front is forecast to reach 30N140W by Sun night. A new set of NW swell will follow the front, forecast to extend from 30N137W to 23N140W by Mon morning. Seas will briefly build to 8 or 9 ft behind the front by Mon night. $$ Delgado ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC041550_C_KWBC_20260404155010_9109880-544-TWDEP.txt ****0000005032**** AXPZ20 KNHC 041550 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Sat Apr 4 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 1500 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: The next gap wind event across the Tehunatepec region is expected by Mon morning as a ridge builds across the eastern slopes of the Sierra Madre Mountains in Mexico, behind a cold front moving across the Gulf of America. Winds are forecast to increase to 20 to 30 kt, with seas building to 8 ft by Sun night. Then, winds will further increase to gale force by Mon morning, with seas building to 12 ft on Mon night. Gusty winds to near storm force may occur. These marine conditions are forecast to persist through Tue morning. Seas generated from this gap wind event will spread well away from the Tehuantepec area, with seas 8 ft or greater reaching as far south as 11N Mon night into Tue. Climatologically, the first gale-force event of the season occurs in mid-October, with the final gale-force event occurring in late March or early April. Occasionally, gale-force events may occur as early as September, and as late as May. Please read the latest High Seas Forecast issued by the National Hurricane Center at website: https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 08N78W to 05N96W. The ITCZ stretches from 05N96W to 07N115W to 04N140W. A second ITCZ is south of the Equator and runs from 03S86W to 03S110W to beyond 02S120W. Scattered moderate convection is observed from 02N to 08N between 115W and 130W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Strong high pressure over the Great Basin supports moderate to fresh NW winds and seas of 3 to 5 ft in the northern Gulf of California. Moderate to locally fresh NW winds are present in the offshore waters of Baja California. Seas in these waters are 5 to 7 ft, reaching 8 ft along 120W N of 28N. In the remainder of the Mexican offshore waters, including the Gulf of Tehuantepec, light to gentle winds and moderate seas in S swell prevail. For the forecast, a Gale Warning has been issued for the Gulf of Tehuantepec. Please, see the Special Features section for more details. Meanwhile, NW swell producing locally rough seas off Baja California Norte will diminish late this morning. Fresh NW to N winds will pulse in the northern Gulf of California today with seas up to 5 ft. Moderate to locally fresh NW winds and moderate seas will prevail off Baja California through the forecast period. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... A strong high pressure located in the vicinity of Bermuda continues to force fresh to strong easterly trade winds and moderate seas across the Gulf of Papagayo region, extending downstream to 88W. Farther east, gentle to moderate northerly winds and moderate seas are found in the Gulf of Panama. Meanwhile, light to gentle winds and moderate seas dominate the remainder of the offshore waters. For the forecast, fresh to locally strong gap winds are expected during the nighttime and early morning hours in the Papagayo region and downwind to about 88W through the forecast period. Similarly, moderate to fresh northerly winds will pulse nightly in the Gulf of Panama through at least late next week. Residual southerly swell will maintain moderate seas off Ecuador and near the Galapagos Islands this weekend. Afterward, seas should gradually subside next week. ...REMAINDER OF THE AREA... Abundant cloudiness with embedded showers is noted in the NW corner of the forecast region associated with a surface trough and a diffluent pattern aloft. A ridge dominates the remainder of the area N of 15N and W of 110W. The pressure gradient between this system and lower pressures in the deep tropics results in moderate to fresh easterly winds and seas of 6 to 8 ft north of the ITCZ and west of 110W. In the remainder of the basin, moderate or lighter winds and moderate seas are prevalent. For the forecast, a ridge will support moderate to locally fresh easterly winds and moderate to locally rough seas across the trade wind zone into the middle of next week. A cold front is forecast to reach 30N140W by Sun night. A new set of NW swell will follow the front, forecast to extend from 30N137W to 23N140W by Mon morning. Seas will briefly build to 8 or 9 ft behind the front by Mon night. $$ GR ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC042124_C_KWBC_20260404212449_38666572-508-TWDEP.txt ****0000005254**** AXPZ20 KNHC 042124 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Sat Apr 4 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 2100 UTC. ...SPECIAL FEATURES... Gulf of Tehuantepec Gale Warning: The next gap wind event across the Tehuantepec region is expected by Mon morning as a ridge builds across the eastern slopes of the Sierra Madre Mountains in Mexico, behind a cold front moving across the Gulf of America. Winds are forecast to increase to 20 to 30 kt, with seas building to 8 ft by Sun night. Then, winds will further increase to gale force by Mon morning, with seas building to 12 or 13 ft on Mon night. Gusty winds to near storm force may occur. These marine conditions are forecast to persist through Tue morning. Seas generated from this gap wind event will spread well away from the Tehuantepec area, with seas 8 ft or greater reaching as far south as 11N Mon night into Tue. Climatologically, the first gale-force event of the season occurs in mid-October, with the final gale-force event occurring in late March or early April. Occasionally, gale-force events may occur as early as September, and as late as May. Please read the latest High Seas Forecast issued by the National Hurricane Center at website: https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from 08N78W to 09N86W to 06N97W. The ITCZ stretches from 06N97W to 06N115W to 03N140W. As is typical for this time of the year, a second ITCZ is located south of the Equator and runs from 04S95W to beyond 02S120W. Scattered moderate convection is observed from 02N to 08N W of 115W. Similar convective activity can be found from 05N to 09N between 83W and 88W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Strong high pressure over the Great Basin supports moderate to fresh NW winds and seas of 3 to 5 ft in the northern Gulf of California. Gentle to moderate NW winds are present elsewhere across the Gulf. Moderate to locally fresh NW winds are blowing in the offshore waters of Baja California. Seas in these waters are 5 to 8 ft, primarily in NW swell. In the remainder of the Mexican offshore waters, including the Gulf of Tehuantepec, light to gentle winds and moderate seas in S swell prevail. For the forecast, a Gale Warning is in effect for the Gulf of Tehuantepec. Please, see the Special Features section for more details. Meanwhile, NW swell producing locally rough seas off Baja California Norte will diminish late today. Gentle to moderate winds and slight seas will prevail in the Gulf of California tonight through midweek next week. Moderate to locally fresh NW winds and moderate seas are expected off Baja California through the forecast period. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... A strong high pressure located near Bermuda continues to force fresh to strong easterly trade winds and moderate seas across the Gulf of Papagayo region, extending downstream to 88W. Farther east, gentle to moderate northerly winds and moderate seas are found in the Gulf of Panama. Meanwhile, light to gentle winds and moderate seas dominate the remainder of the offshore forecast waters. For the forecast, fresh to locally strong gap winds are expected during the nighttime and early morning hours in the Papagayo region and downwind to about 88W through the forecast period. Moderate to fresh northerly winds are expected in the Gulf of Panama tonight. Then, mainly gentle to moderate N winds are expected through the middle of the next week. Residual southerly swell will maintain moderate seas between Ecuador and the Galapagos Islands through this weekend while gradually subsiding. ...REMAINDER OF THE AREA... Abundant cloudiness, with possible showers, is noted in the NW corner of the forecast region associated with a surface trough and strong upper-level winds. A ridge dominates the remainder of the area N of 15N and W of 110W. The pressure gradient between this system and lower pressures in the deep tropics results in moderate to fresh easterly winds and seas of 6 to 8 ft north of the ITCZ to about 15N and west of 110W. Elsewhere, moderate or lighter winds and moderate seas are prevalent. For the forecast, a ridge will support moderate to locally fresh easterly winds and moderate to locally rough seas across the trade wind zone into the middle of next week. A cold front is forecast to reach 30N140W by Sun night, and extend from 30N137W to 24N140W by Mon morning. Gentle to moderate winds are forecast on either side of the front. Seas will briefly build to 9 ft behind the front Mon night into Tue. $$ GR ########################### END OF MESSAGE SET ############################