####018006236#### AXPZ20 KNHC 042121 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Thu Apr 04 2024 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... Significant northerly swell event: An extensive set of large northwest swell is forecast to propagate southeast of 30N late tonight through Fri night, with seas of 12 ft or greater covering the waters north of 24N and east of 135W. Seas will peak to around 15 ft along 30N between 120W and 130W from about late Fri morning into the afternoon. Wave periods will be mainly 12 to 14 seconds. Very hazardous seas are expected during this event, with dangerous conditions possible along the Baja California Norte coast Fri night through the weekend. Refer to your local national weather service for more details on surf conditions. Please read the latest High Seas Forecast issued by the National Hurricane Center under AWIPS/WMO headers FZPN03 KNHC/HSFEP2 or at website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for further details on this significant northerly swell event. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from along the coast of northwest Colombia southwestward to across southern Costa Rica to 07N83W and to 06N88W, where latest scatterometer data indicates that it transitions to the ITCZ and continues to 05N98W to 06N107W and to 05N122W. Scattered moderate convection is northwest and west of the ITCZ from 07N to 09N between 119W and 124W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please refer to the Special Features section for details on an upcoming significant northerly swell event. A cold front extends from a 1013 mb low that is just offshore southern California southwestward to near 29N122W. A secondary cold front is following in close behind. Otherwise, a northwest to southeast oriented high pressure ridge is over the outer offshore waters boundary. Winds offshore Baja California are moderate to fresh, northwest to north in direction, along with seas of 4 and 6 ft. A recent ASCAT satellite data pass shows fresh to strong north winds in the Gulf of Tehuantepec. Seas there are in the 6 to 8 ft range. Mostly light to gentle winds are elsewhere S of 18N along with 4 to 7 ft seas. For the forecast, the fresh to strong north winds in the Gulf of Tehuantepec will diminish to moderate speeds this afternoon, then pulse again to fresh to strong late tonight through early Fri afternoon. Expect fresh to strong west gap winds across the northern Gulf of California tonight into Fri associated with a cold front that will be moving through southern California and Baja California Norte. West to northwest winds may be near gale- force north of 29N Fri night. Fresh to strong northwest winds will filter in behind the front over the central and southern Gulf of California on Sat with fresh to strong northwest to north winds developing near shore from Cabo San Lazaro northward beginning Fri night through the weekend. Very large northwest is expected to accompany the front off Baja California tonight through Fri night, gradually subsiding on Sat and Sun. A reinforcing set of northwest swell may impact the Baja California waters early next week, but is not expected to attain significant event status. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR Partial ASCAT satellite data passes show mostly gentle winds across the offshore waters, except for light and variable winds offshore Colombia and Ecuador. Seas over these waters are 3 to 5 ft due to long-period south to southwest swell. For the forecast, winds should remain tranquil for the next several days over the Central America and equatorial Pacific waters, except for pulsing moderate to fresh winds in the Papagayo region Fri through early next week. Seas from offshore Ecuador to the Galapagos Islands will build slightly Fri night through early next week. ...REMAINDER OF THE AREA... Please refer to the Special Features section for details on an upcoming significant northerly swell event. A cold front has pushes south into the area. It is clearly defined in visible satellite imagery extending from near 30N124W to 27N135W and continuing west of the area at 27N140W, where it is weakening. Otherwise, a northwest to southeast oriented high pressure ridge dominates the waters north of the ITCZ. Fresh to strong north to northeast winds are behind the front, as well as to the south of the front to near 06N and west 129W as noted in the latest ASCAT satellite data passes. Moderate to fresh winds are elsewhere north of the ITCZ and west of 110W, with gentle to moderate winds across the remainder of the open waters. Northwest swell is producing seas of 8 to 11 ft behind the front, while similar seas are across the waters from the equator to 20N and west of about 115W due to the trade winds combining with old, remnant northerly swell. Seas of 4 to 7 ft prevail elsewhere. For the forecast, the cold front will quickly reach the far northeast part of the area on Fri and sweep southward through Sat while its western segment begins to weaken. As this takes place, the areal coverage of the trade wind will decrease through Sat. As mentioned above, an extensive set of very large northwest swell will propagate through the northern waters starting late tonight, and continue to propagate southeastward through Fri night. The swell will gradually decay through the weekend, reaching the Revillagigedo Islands by Sun. Overall marine conditions are expected to slowly improve from late Sun into early next week. $$ Aguirre ####018006236#### AXPZ20 KNHC 042122 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Thu Apr 04 2024 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... Significant northerly swell event: An extensive set of large northwest swell is forecast to propagate southeast of 30N late tonight through Fri night, with seas of 12 ft or greater covering the waters north of 24N and east of 135W. Seas will peak to around 15 ft along 30N between 120W and 130W from about late Fri morning into the afternoon. Wave periods will be mainly 12 to 14 seconds. Very hazardous seas are expected during this event, with dangerous conditions possible along the Baja California Norte coast Fri night through the weekend. Refer to your local national weather service for more details on surf conditions. Please read the latest High Seas Forecast issued by the National Hurricane Center under AWIPS/WMO headers FZPN03 KNHC/HSFEP2 or at website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for further details on this significant northerly swell event. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from along the coast of northwest Colombia southwestward to across southern Costa Rica to 07N83W and to 06N88W, where latest scatterometer data indicates that it transitions to the ITCZ and continues to 05N98W to 06N107W and to 05N122W. Scattered moderate convection is northwest and west of the ITCZ from 07N to 09N between 119W and 124W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please refer to the Special Features section for details on an upcoming significant northerly swell event. A cold front extends from a 1013 mb low that is just offshore southern California southwestward to near 29N122W. A secondary cold front is following in close behind. Otherwise, a northwest to southeast oriented high pressure ridge is over the outer offshore waters boundary. Winds offshore Baja California are moderate to fresh, northwest to north in direction, along with seas of 4 and 6 ft. A recent ASCAT satellite data pass shows fresh to strong north winds in the Gulf of Tehuantepec. Seas there are in the 6 to 8 ft range. Mostly light to gentle winds are elsewhere S of 18N along with 4 to 7 ft seas. For the forecast, the fresh to strong north winds in the Gulf of Tehuantepec will diminish to moderate speeds this afternoon, then pulse again to fresh to strong late tonight through early Fri afternoon. Expect fresh to strong west gap winds across the northern Gulf of California tonight into Fri associated with a cold front that will be moving through southern California and Baja California Norte. West to northwest winds may be near gale- force north of 29N Fri night. Fresh to strong northwest winds will filter in behind the front over the central and southern Gulf of California on Sat with fresh to strong northwest to north winds developing near shore from Cabo San Lazaro northward beginning Fri night through the weekend. Very large northwest is expected to accompany the front off Baja California tonight through Fri night, gradually subsiding on Sat and Sun. A reinforcing set of northwest swell may impact the Baja California waters early next week, but is not expected to attain significant event status. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR Partial ASCAT satellite data passes show mostly gentle winds across the offshore waters, except for light and variable winds offshore Colombia and Ecuador. Seas over these waters are 3 to 5 ft due to long-period south to southwest swell. For the forecast, winds should remain tranquil for the next several days over the Central America and equatorial Pacific waters, except for pulsing moderate to fresh winds in the Papagayo region Fri through early next week. Seas from offshore Ecuador to the Galapagos Islands will build slightly Fri night through early next week. ...REMAINDER OF THE AREA... Please refer to the Special Features section for details on an upcoming significant northerly swell event. A cold front has pushes south into the area. It is clearly defined in visible satellite imagery extending from near 30N124W to 27N135W and continuing west of the area at 27N140W, where it is weakening. Otherwise, a northwest to southeast oriented high pressure ridge dominates the waters north of the ITCZ. Fresh to strong north to northeast winds are behind the front, as well as to the south of the front to near 06N and west 129W as noted in the latest ASCAT satellite data passes. Moderate to fresh winds are elsewhere north of the ITCZ and west of 110W, with gentle to moderate winds across the remainder of the open waters. Northwest swell is producing seas of 8 to 11 ft behind the front, while similar seas are across the waters from the equator to 20N and west of about 115W due to the trade winds combining with old, remnant northerly swell. Seas of 4 to 7 ft prevail elsewhere. For the forecast, the cold front will quickly reach the far northeast part of the area on Fri and sweep southward through Sat while its western segment begins to weaken. As this takes place, the areal coverage of the trade wind will decrease through Sat. As mentioned above, an extensive set of very large northwest swell will propagate through the northern waters starting late tonight, and continue to propagate southeastward through Fri night. The swell will gradually decay through the weekend, reaching the Revillagigedo Islands by Sun. Overall marine conditions are expected to slowly improve from late Sun into early next week. $$ Aguirre ####018006239#### AXPZ20 KNHC 042123 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Thu Apr 04 2024 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... Significant northerly swell event: An extensive set of large northwest swell is forecast to propagate southeast of 30N late tonight through Fri night, with seas of 12 ft or greater covering the waters north of 24N and east of 135W. Seas will peak to around 15 ft along 30N between 120W and 130W from about late Fri morning into the afternoon. Wave periods will be mainly 12 to 14 seconds. Very hazardous seas are expected during this event, with dangerous conditions possible along the Baja California Norte coast Fri night through the weekend. Refer to your local national weather service for more details on surf conditions. Please read the latest High Seas Forecast issued by the National Hurricane Center under AWIPS/WMO headers FZPN03 KNHC/HSFEP2 or at website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for further details on this significant northerly swell event. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from along the coast of northwest Colombia southwestward to across southern Costa Rica to 07N83W and to 06N88W, where latest scatterometer data indicates that it transitions to the ITCZ and continues to 05N98W to 06N107W and to 05N122W. Scattered moderate convection is northwest and west of the ITCZ from 07N to 09N between 119W and 124W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please refer to the Special Features section for details on an upcoming significant northerly swell event. A cold front extends from a 1013 mb low that is just offshore southern California southwestward to near 29N122W. A secondary cold front is following in close behind. Otherwise, a northwest to southeast oriented high pressure ridge is over the outer offshore waters boundary. Winds offshore Baja California are moderate to fresh, northwest to north in direction, along with seas of 4 and 6 ft. A recent ASCAT satellite data pass shows fresh to strong north winds in the Gulf of Tehuantepec. Seas there are in the 6 to 8 ft range. Mostly light to gentle winds are elsewhere S of 18N along with 4 to 7 ft seas. For the forecast, the fresh to strong north winds in the Gulf of Tehuantepec will diminish to moderate speeds this afternoon, then pulse again to fresh to strong late tonight through early Fri afternoon. Expect fresh to strong west gap winds across the northern Gulf of California tonight into Fri associated with a cold front that will be moving through southern California and Baja California Norte. West to northwest winds may be near gale- force north of 29N Fri night. Fresh to strong northwest winds will filter in behind the front over the central and southern Gulf of California on Sat with fresh to strong northwest to north winds developing near shore from Cabo San Lazaro northward beginning Fri night through the weekend. Very large northwest is expected to accompany the front off Baja California tonight through Fri night, gradually subsiding on Sat and Sun. A reinforcing set of northwest swell may impact the Baja California waters early next week, but is not expected to attain significant event status. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR Partial ASCAT satellite data passes show mostly gentle winds across the offshore waters, except for light and variable winds offshore Colombia and Ecuador. Seas over these waters are 3 to 5 ft due to long-period south to southwest swell. For the forecast, winds should remain tranquil for the next several days over the Central America and equatorial Pacific waters, except for pulsing moderate to fresh winds in the Papagayo region Fri through early next week. Seas from offshore Ecuador to the Galapagos Islands will build slightly Fri night through early next week. ...REMAINDER OF THE AREA... Please refer to the Special Features section for details on an upcoming significant northerly swell event. A cold front has pusheD south into the area. It is clearly defined in visible satellite imagery extending from near 30N124W to 27N135W and continuing west of the area at 27N140W, where it is weakening. Otherwise, a northwest to southeast oriented high pressure ridge dominates the waters north of the ITCZ. Fresh to strong north to northeast winds are behind the front, as well as to the south of the front to near 06N and west 129W as noted in the latest ASCAT satellite data passes. Moderate to fresh winds are elsewhere north of the ITCZ and west of 110W, with gentle to moderate winds across the remainder of the open waters. Northwest swell is producing seas of 8 to 11 ft behind the front, while similar seas are across the waters from the equator to 20N and west of about 115W due to the trade winds combining with old, remnant northerly swell. Seas of 4 to 7 ft prevail elsewhere. For the forecast, the cold front will quickly reach the far northeast part of the area on Fri and sweep southward through Sat while its western segment begins to weaken. As this takes place, the areal coverage of the trade wind will decrease through Sat. As mentioned above, an extensive set of very large northwest swell will propagate through the northern waters starting late tonight, and continue to propagate southeastward through Fri night. The swell will gradually decay through the weekend, reaching the Revillagigedo Islands by Sun. Overall marine conditions are expected to slowly improve from late Sun into early next week. $$ Aguirre ####018006243#### AXPZ20 KNHC 042123 RRA TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 2205 UTC Thu Apr 04 2024 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... Significant northerly swell event: An extensive set of large northwest swell is forecast to propagate southeast of 30N late tonight through Fri night, with seas of 12 ft or greater covering the waters north of 24N and east of 135W. Seas will peak to around 15 ft along 30N between 120W and 130W from about late Fri morning into the afternoon. Wave periods will be mainly 12 to 14 seconds. Very hazardous seas are expected during this event, with dangerous conditions possible along the Baja California Norte coast Fri night through the weekend. Refer to your local national weather service for more details on surf conditions. Please read the latest High Seas Forecast issued by the National Hurricane Center under AWIPS/WMO headers FZPN03 KNHC/HSFEP2 or at website https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml for further details on this significant northerly swell event. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A surface trough extends from along the coast of northwest Colombia southwestward to across southern Costa Rica to 07N83W and to 06N88W, where latest scatterometer data indicates that it transitions to the ITCZ and continues to 05N98W to 06N107W and to 05N122W. Scattered moderate convection is northwest and west of the ITCZ from 07N to 09N between 119W and 124W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please refer to the Special Features section for details on an upcoming significant northerly swell event. A cold front extends from a 1013 mb low that is just offshore southern California southwestward to near 29N122W. A secondary cold front is following in close behind. Otherwise, a northwest to southeast oriented high pressure ridge is over the outer offshore waters boundary. Winds offshore Baja California are moderate to fresh, northwest to north in direction, along with seas of 4 and 6 ft. A recent ASCAT satellite data pass shows fresh to strong north winds in the Gulf of Tehuantepec. Seas there are in the 6 to 8 ft range. Mostly light to gentle winds are elsewhere S of 18N along with 4 to 7 ft seas. For the forecast, the fresh to strong north winds in the Gulf of Tehuantepec will diminish to moderate speeds this afternoon, then pulse again to fresh to strong late tonight through early Fri afternoon. Expect fresh to strong west gap winds across the northern Gulf of California tonight into Fri associated with a cold front that will be moving through southern California and Baja California Norte. West to northwest winds may be near gale- force north of 29N Fri night. Fresh to strong northwest winds will filter in behind the front over the central and southern Gulf of California on Sat with fresh to strong northwest to north winds developing near shore from Cabo San Lazaro northward beginning Fri night through the weekend. Very large northwest is expected to accompany the front off Baja California tonight through Fri night, gradually subsiding on Sat and Sun. A reinforcing set of northwest swell may impact the Baja California waters early next week, but is not expected to attain significant event status. ...OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR Partial ASCAT satellite data passes show mostly gentle winds across the offshore waters, except for light and variable winds offshore Colombia and Ecuador. Seas over these waters are 3 to 5 ft due to long-period south to southwest swell. For the forecast, winds should remain tranquil for the next several days over the Central America and equatorial Pacific waters, except for pulsing moderate to fresh winds in the Papagayo region Fri through early next week. Seas from offshore Ecuador to the Galapagos Islands will build slightly Fri night through early next week. ...REMAINDER OF THE AREA... Please refer to the Special Features section for details on an upcoming significant northerly swell event. A cold front has pushed south into the area. It is clearly defined in visible satellite imagery extending from near 30N124W to 27N135W and continuing west of the area at 27N140W, where it is weakening. Otherwise, a northwest to southeast oriented high pressure ridge dominates the waters north of the ITCZ. Fresh to strong north to northeast winds are behind the front, as well as to the south of the front to near 06N and west 129W as noted in the latest ASCAT satellite data passes. Moderate to fresh winds are elsewhere north of the ITCZ and west of 110W, with gentle to moderate winds across the remainder of the open waters. Northwest swell is producing seas of 8 to 11 ft behind the front, while similar seas are across the waters from the equator to 20N and west of about 115W due to the trade winds combining with old, remnant northerly swell. Seas of 4 to 7 ft prevail elsewhere. For the forecast, the cold front will quickly reach the far northeast part of the area on Fri and sweep southward through Sat while its western segment begins to weaken. As this takes place, the areal coverage of the trade wind will decrease through Sat. As mentioned above, an extensive set of very large northwest swell will propagate through the northern waters starting late tonight, and continue to propagate southeastward through Fri night. The swell will gradually decay through the weekend, reaching the Revillagigedo Islands by Sun. Overall marine conditions are expected to slowly improve from late Sun into early next week. $$ Aguirre