--------------------------------------------------------------------------- TROPICAL WEATHER DISCUSSION (EASTERN PACIFIC AREA) MESSAGES T1T2: AX A1A2: PZ Date: 2026-05-19 --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC190301_C_KWBC_20260519030209_9109880-3530-TWDEP.txt ****0000003947**** AXPZ20 KNHC 190301 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Tue May 19 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. ...TROPICAL WAVES... A tropical wave is near 82W from the western Caribbean Sea southward across western Panama into the eastern Pacific, and moving west at 5 kt. It is enhancing convection near the monsoon trough described in the section below. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 09N79W to 10N85W to 07N90W. The ITCZ extends from 07N90W to 1007 mb low pressure near 08N129W, then to 08N140W. Scattered moderate convection is active from 02N to 06n between 85W and 90W, from 08N to 12N between 95W and 100W, and from 05N to 10N between 115W and 125W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Gentle NW breezes cover most of the Mexican offshore waters this evening, as broad ridge extends over the region from a 1034 mb high pressure area centered near 38N140W. Light breezes are noted across the Gulf of California. Large 8-11 ft NW swell still is present off Baja California, but is subsiding. Combined seas are 4-6 ft elsewhere primarily in NW swell. For the forecast, the residual large, long-period NW swell will maintain 8 to 11 ft seas off Baja Norte through tonight, then subside to between 6 and 8 ft by Tue afternoon. Seas of 8 to 11 ft near Baja Sur will also drop to between 6 and 8 ft by Tue afternoon. Winds near Baja California and the Revillagigedo Islands, and in the Gulf of California will become mostly gentle this evening, and stay this way most of this week. The only exception will be moderate with locally fresh NW winds off Cabo San Lucas in the night-time and early morning hours. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh E gap winds with 5-7 ft seas persist across the Gulf of Papagayo. Gentle to moderate breezes with 3-5 ft seas are noted elsewhere. No significant showers or thunderstorms are active currently, but there was earlier activity south of Panama associated with a tropical wave and the monsoon trough. For the forecast, fresh to occasionally strong winds will pulse across the Gulf of Papagayo mainly in overnight and early morning hours through Thu morning. Elsewhere, gentle to moderate winds along with moderate seas in southerly swell are expected through the end of the week. ...REMAINDER OF THE AREA... A broad surface ridge extends southwestward from a 1034 mb high near 38N140W across 30N136W to near the Revillagigedo Islands. This feature is supporting moderate to fresh N to NE winds north of the ITCZ west of 120W. Under long-period, large to moderate NW swell, seas in this area range from 7 to 12 ft, with the highest near 30N125W. For the waters north of the ITCZ east of 120W, gentle to moderate NE to E winds with 6 to 9 ft seas in mixed moderate swells exist. Gentle to moderate SE to E winds and seas at 5 to 8 ft in mixed moderate swells prevail south of the ITCZ. For the forecast, the aforementioned ridge will continue to gradually weaken while shifting westward through midweek. This will allow winds and seas north of the ITCZ to steadily subside from east to west through midweek, becoming gentle to moderate winds with 6 to 8 ft seas by Thu. Winds south of the ITCZ will also becoming gentle by Thu with seas staying at 5 to 7 ft in mixed swells. $$ Christensen ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC190912_C_KWBC_20260519091311_9109880-3548-TWDEP.txt ****0000003528**** AXPZ20 KNHC 190912 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Tue May 19 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 0900 UTC. ...TROPICAL WAVES... A tropical wave is near 84W north of 04N into Costa Rica and Nicaragua, and is moving west at 5 kt. It is enhancing convection near the monsoon trough described in the section below. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10N85W to 09N90W. The ITCZ extends from 09N90W to 05N120W to 05N140W. Scattered moderate is active along the coast of Costa Rica. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Gentle NW breezes continue to cover most of the Mexican offshore waters this morning, as broad ridge extends over the region from a 1034 mb high pressure area centered near 38N140W through the Revillagigedo Islands. Light breezes are noted across the Gulf of California. Large 8-10 ft NW swell still is present off Baja California, but is subsiding. Combined seas are 4-6 ft elsewhere primarily in NW swell. For the forecast, NW swell to 9 ft will persist off Baja California and the Revillagigedo Islands will gradually subside through mid week. A ridge extending across the region along roughly 20N will support mostly gentle to moderate NW winds across the region with moderate seas elsewhere in NW swell. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh E gap winds with 5-7 ft seas persist across the Gulf of Papagayo. Gentle to moderate breezes with 3-5 ft seas are noted elsewhere. Scattered showers and thunderstorms are active along the coast of Costa Rica due to local overnight drainage flow and a tropical wave moving through the region. For the forecast, fresh to occasionally strong winds will pulse across the Gulf of Papagayo mainly in overnight and early morning hours through Thu morning. Elsewhere, gentle to moderate winds along with moderate seas in southerly swell are expected through the end of the week. ...REMAINDER OF THE AREA... A broad surface ridge extends southwestward from a 1034 mb high near 38N140W to near the Revillagigedo Islands. This feature is supporting moderate to fresh N to NE winds north of the ITCZ west of 120W. Under long-period, large to moderate NW swell, seas in this area range from 7 to 11 ft, with the highest near 30N125W. For the waters north of the ITCZ east of 120W, gentle to moderate NE to E winds with 6 to 9 ft seas in mixed moderate swells exist. Gentle to moderate SE to E winds and seas at 5 to 8 ft in mixed moderate swells prevail south of the ITCZ. For the forecast, the aforementioned ridge will continue to gradually weaken while shifting westward through midweek. This will allow winds and seas north of the ITCZ to steadily subside from east to west through midweek, becoming gentle to moderate winds with 6 to 8 ft seas by Thu. Winds south of the ITCZ will also becoming gentle by Thu with seas staying at 5 to 7 ft in mixed swells. $$ Christensen ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC191525_C_KWBC_20260519152543_47448518-3639-TWDEP.txt ****0000004401**** AXPZ20 KNHC 191525 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1605 UTC Tue May 19 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. ...TROPICAL WAVES... A tropical wave is near 86W, extending north of 04N into Nicaragua and Honduras, and is moving west at 5 kt. It is enhancing convection near the monsoon trough described in the section below. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 11N74W to 09.5N79W to 10N86W. The ITCZ extends from 08.5N92W to 09.5N101W to 06N118W to 08N126W to beyond 05.5N140W. Scattered moderate isolated strong convection is noted from 03.5N to 10N E of 88W, and from 00N to 13N between 98W and 140W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Gentle NW to N breezes continue to cover most of the Mexican offshore waters this morning, as a surface trough from just N of Isla Guadalupe extending SW to near 26N124W is partially blocking a broad ridge to the W of the region. South of the trough, the ridge extends modestly into Baja Sur, where moderate northerly winds prevail across the waters south of Cabo San Lazaro. Light breezes are noted inside the Gulf of California. Large N-NW moving through the regional waters is producing seas of 8-10 ft off of Baja California, with recent satellite altimeter data showing an area of seas to 11 ft well offshore of Punta Eugenia. This current swell has begun to subside. Combined seas are 4-7 ft primarily in NW swell elsewhere across the Mexican waters between Tehuantepec and the Revillagigedo Islands. For the forecast, large NW swell will persist off Baja California and through the Revillagigedo Islands today, and will gradually subside through mid week. A ridge extending across the region along roughly 20N will support mostly gentle to moderate NW winds across the region with moderate seas elsewhere in NW swell. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh to strong E gap winds with 5-8 ft seas persist across the Papagayo region and extend offshore to near 90W. Gentle to moderate breezes with 3-5 ft seas in SW swell are noted elsewhere. Scattered showers and thunderstorms are active along the coastal waters and over interior portions of Costa Rica, Panama, and NW Colombia, behind a tropical wave moving through the region. For the forecast, fresh to occasionally strong winds will pulse across the Gulf of Papagayo mainly in the overnight and early morning hours through Thu morning. Elsewhere, gentle to moderate winds along with moderate seas in southerly swell are expected through the end of the week. ...REMAINDER OF THE AREA... A broad surface ridge extends southwestward from a 1034 mb high near 38N141W southward to the ITCZ, and southeastward to near the Revillagigedo Islands. This feature is supporting moderate to fresh N to NE winds north of the ITCZ west of 122W. Large to moderate N to NE swell continues to move through the regional waters generally N of 14N this morning, producing seas in this area range from 7 to 11 ft to the W of 110W, with seas to 12 ft just N of the area along 127W. For the waters north of the ITCZ east of 120W, gentle to moderate NE to E winds with 6 to 9 ft seas in mixed moderate swells prevail. Gentle to moderate SE to E winds and seas at 5 to 8 ft in mixed moderate swells prevail south of the ITCZ. Active convection is along the ITCZ between 105W and 135W. For the forecast, the aforementioned ridge will continue to gradually weaken while shifting westward through midweek. This will allow winds and seas north of the ITCZ to steadily subside from east to west through midweek, becoming gentle to moderate winds with 6 to 8 ft seas by Thu. Winds south of the ITCZ will also becoming gentle by Thu with seas staying at 5 to 7 ft in mixed swells. $$ Stripling ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC192015_C_KWBC_20260519201637_49676782-3545-TWDEP.txt ****0000004752**** AXPZ20 KNHC 192015 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Tue May 19 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 1930 UTC. ...TROPICAL WAVES... A tropical wave is near 88W, extending north of 04N into El Salvador and Honduras, and is moving west at 5 kt. It is enhancing convection near the monsoon trough described in the section below. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... The monsoon trough extends from 10.5N75W to 04.5N78W to 08N88W. The ITCZ extends from 08N91.5W to 08.5N104W to 06N120W to 07.5N131W to beyond 07.5N140W. Scattered moderate isolated strong convection is noted from 04N to 10N E of 94W, and from 03N to 13N between 100W and 135W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Gentle NW to N breezes continue to cover most of the Mexican offshore waters this afternoon, as a surface trough from just W of Isla Guadalupe along 120W extending SW to near 25N122W is partially blocking a broad ridge to the W of the region. South of the trough, the ridge extends modestly into Baja Sur, with gentle to moderate northerly winds prevailing across the waters south of Cabo San Lazaro to the Revillagigedo Islands, where winds veer from the N-NE. Light to gentle breezes are noted inside the Gulf of California. Large N to NW moving through the regional waters is gradually subsiding, but still producing seas of 7-9 ft off of Baja California and spreading southward to the Revillagigedos. Light to gentle wind and seas of 4-6 ft primarily in NW swell are elsewhere across the Mexican waters between Tehuantepec and the Revillagigedo Islands. For the forecast, large NW swell will gradually subside across the waters off of Baja California and through the Revillagigedo Islands tonight through Wed, subsiding below 8 ft by Wed evening. Moderate NW swell will then dominate the area waters into the weekend. A ridge extending across the region along roughly 21N will support mostly gentle to moderate NW winds across the area waters, with fresh winds possible near the coast of Cabo San Lucas each afternoon and evening. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Fresh NE to E gap winds with 5-8 ft seas prevail across the Papagayo region and extend offshore to near 90W this afternoon. Moderate easterly winds then extend beyond 90W to well south of Tehuantepec. Gentle to moderate breezes with 3-5 ft seas in SW swell are noted elsewhere. Scattered showers and thunderstorms are active along the coastal waters and over interior portions of Costa Rica, Panama, and NW Colombia, behind a tropical wave moving through the region. For the forecast, fresh to occasionally strong winds will pulse across the Papagayo region, mainly in the overnight and early morning hours through Thu morning, then diminish through Sat. Elsewhere, gentle to moderate winds along with moderate seas in southerly swell are expected through the end of the week. ...REMAINDER OF THE AREA... A broad surface ridge extends southward from a 1034 mb high near 38N141W southward to the ITCZ, and southeastward around a low level trough just W of Isla Guadalupe, to near the Revillagigedo Islands. This ridge is supporting moderate to fresh N to NE winds north of 09N and west of 122W. Large to moderate N to NE swell continues to move through the regional waters generally N of 10N this afternoon, producing seas in this area from 7 to 11 ft to the W of 110W. For the waters north of the ITCZ east of 120W, gentle to moderate NE to E winds with 6 to 9 ft seas in mixed moderate swells prevail. Gentle to moderate SE to S winds and seas at 5 to 8 ft in mixed moderate swells prevail south of the ITCZ. Active convection is along the ITCZ between 100W and 125W. For the forecast, the aforementioned ridge will continue to gradually weaken while shifting southwestward through the end of the week. This will allow winds and seas north of the ITCZ to steadily subside from east to west through midweek, becoming gentle to moderate winds with 6 to 7 ft seas by Fri. Winds south of the ITCZ will also becoming gentle by Fri with seas remaining at 5 to 7 ft in mixed swell. $$ Stripling ########################### END OF MESSAGE SET ############################