--------------------------------------------------------------------------- TROPICAL WEATHER DISCUSSION (EASTERN PACIFIC AREA) MESSAGES T1T2: AX A1A2: PZ Date: 2026-06-07 --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC070444_C_KWBC_20260607044444_32440682-2094-TWDEP.txt ****0000009937**** AXPZ20 KNHC 070444 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Sun Jun 7 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... Tropical Depression Amanda is centered near 12.1N 134.9W at 0300 UTC, moving southwest at 3 kt. Estimated minimum central pressure is 1007 mb. Maximum sustained winds are 30 kt with gusts to 40 kt. Peak seas are currently near 3.5 m, or 10 ft, within 45 nm across the western semicircle. Amanda remains a sheared system, with a recent burst of convection occurring within 65 nm W of the exposed low-level circulation center. These unfavorable atmospheric conditions are expected to persist, as the system moves southwestward to west-southwestward during the next several days, and becomes a remnant low. Please read the latest HIGH SEAS FORECAST issued by the National Hurricane Center at website - https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml and the latest Amanda NHC Forecast/Advisory and Public Advisory at www.hurricanes.gov for more details. Offshore Southern and Southwestern Mexico (EP91): Scattered heavy showers and isolated thunderstorms associated with a broad area of low pressure located along the monsoon trough, a few hundred miles southwest of Zihuatanejo, Mexico persist tonight. This system has become more organized and a tropical depression will likely form later tonight or tomorrow. The disturbance is forecast to move northeastward and then northward, and approach the coast of southern Mexico Sunday night and Monday. Interests in southern Mexico should monitor the progress of this system. Regardless of development, heavy rainfall and life-threatening flash flooding are possible across portions of southern Mexico through early next week. Currently, this system has a high chance of tropical cyclone formation in next 7 days. Refer to the latest NHC Tropical Weather Outlook at www.hurricanes.gov for updates. Offshore of Central America: Scattered heavy showers and isolated thunderstorms associated with a broad area of low pressure along the monsoon trough offshore of Central America is persisting. Environmental conditions appear conducive for development and a tropical depression is likely to form during the next day or two, while the system moves slowly northward toward the coast of Central America. Interests along the Pacific coasts of northwestern Costa Rica, Nicaragua, Honduras, and El Salvador should monitor the progress of this system. Regardless of development, heavy rainfall and life-threatening flash flooding are possible across portions of Costa Rica, Nicaragua, El Salvador, and Guatemala through early next week. Currently, this system has a high chance of tropical cyclone formation in the next 7 days. Refer to the latest NHC Tropical Weather Outlook at www.hurricanes.gov for updates. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A monsoon trough extends westward from the coastal border of Nicaragua and Costa Rica to near 12N101W to 14.5N98W to low pres near 14.5N102W 1008 mb, then resumes from 11N106W to 08N119W to 11N130W. ITCZ continues southwestward from 08N134W TO 06N140W. Scattered moderate to isolated strong convection is noted from 02N to 11N E of 91W, and from 04N to 09N between 110 and 130W. Numerous moderate to scattered strong convection is seen from 07N to 14N between 91W and 110W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A ridge, anchored by a 1030 mb high pressure center located north of the Hawaiian Islands near 35N151W, extends southeastward across the offshore forecast waters of Baja California Sur and to the Revillagigedo Islands. Weak low pressure is across the coastal waters of southern California. This pattern is producing light to gentle NW winds across the waters N of Cabo San Lazaro, and gentle to moderate NW winds S of Cabo San Lazaro. Winds increase to fresh speeds in the vicinity of Cabo San Lucas. Seas are 6 to 7 ft in mixed NW and SW swell across these waters, except 7 to 9 ft in the outer waters N of Punta Eugenia. Inside the Gulf of California, gentle to locally moderate S to SW winds generally prevail, and moderate to locally fresh S winds across north portions. Seas of 1 to 3 ft prevail across much of the Gulf, except 3 to 4 ft N portions and 4 to 5 ft in SW swell across the entrance of the Gulf. Across the remainder of the Mexican offshore waters, gentle to moderate winds prevail, and are strongest W through S of EP91. Seas of 6 to 8 ft in SW swell continue across these waters. Scattered to numerous moderate to strong showers and thunderstorms continue across much of the waters from Chiapas to Colima. For the forecast, a broad surface ridge extending southeastward into the Baja Sur waters will sustain gentle to moderate NW winds across the Baja waters through Mon, with fresh to locally strong NW to W winds persisting near Cabo San Lucas through Tue evening. Moderate to locally fresh NW winds will persist across the far outer waters of Baja Norte, NW of Isla Guadalupe. Fresh to locally strong S to SW winds are expected in the northern Gulf of California until Sun night. The combination of merging NW and S-SW swell will prolong moderate to rough seas west of Baja Norte into midweek next week, and near Baja Sur and the Revillagigedo Islands early Mon through Wed. Low pressure...EP91... along the monsoon trough will strengthen monsoonal SW to W winds across the offshore waters of southern Mexico by Sun. These winds could reach to near-gale force along with very rough seas as large SW swell moves into the area Mon. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Clusters of scattered to numerous showers and thunderstorms across the near and offshore waters of Central America are associated with an active monsoon trough, and a developing area of low pressure along 90W. Please, see the Special Features section for more details. A weak surface pressure pattern dominates the region. Recent satellite scatterometer data indicated that a weak low pressure center is beginning to develop along 90W, while the monsoon trough has lifted to near 11N. Gentle to moderate SW to W winds prevail across most of the area S of the trough, except higher near showers and thunderstorms. Gentle winds are generally N of the trough. Seas of 5 to 7 ft in SW swell dominate the forecast waters, except to 8 ft SW of the Galapagos Islands and across the far outer waters W of 90W. For the forecast, a new set of large SW swell will build across the regional waters Sun through early Tue. As a result, moderate seas will becoming rough by Sun, and then very rough in the offshore waters of Central America by late Sun or early Mon. At the same time, convergent monsoonal winds will generate periods of heavy showers and strong thunderstorms across the regional offshore waters at least into early next week. Developing low pressure south of El Salvador and Guatemala will aid in strengthening the monsoonal SW to W winds across the offshore waters of Central America on Sun, bringing strong to near-gale force winds into the outer waters late Sun through Mon. ...REMAINDER OF THE AREA... Please see the Special Features section for information on newly downgraded Tropical Depression Amanda located across the Tropical Pacific W of 130W. High pressure of 1030 mb located north of the Hawaiian Islands near 35N151W, dominates the waters N of 15N and W of 115W, extending southeastward to the Revillagigedo Islands. The pressure gradient between the ridge and T.D. Amanda is promoting moderate to fresh NE to E winds across the waters N of 12N and W of 130W. Seas over these waters and elsewhere N of 20N are in the 7 to 10 ft range in a mix of trade wind waves and NW to N swell. Moderate to fresh N to NE winds prevail N of 26N between 120W and 135W, where seas are 8 to 10 ft in N to NE swell and near 11 ft along 30N. Mainly gentle winds are S of the monsoon trough and W of 120W, with moderate to locally fresh winds S of the monsoon trough and E of 120W. Seas are 7 to 10 ft in building SW swell S of 10N and W of 95W. For the forecast, Tropical Depression Amanda will move to 11.9N 134.8W around midnight tonight, continue to slowly weaken and reach near 11.4N 135.2W midday Sun, then become a post-tropical remnant low midnight Sun night near 11.1N 136W, and continue to move west-southwestward through Tue. Meanwhile, the high pressure NW of the area will drift W and weaken slightly across the area through Mon as Amanda tracks SW over the western portion of the area, resulting in gradually diminishing winds across the trade wind zone. Large S to SW will reach the equator this afternoon and move through the regional waters through early next week, reaching to 20N Sun night through Mon. Northerly swell in the N-central waters will produce seas of 7 to 10 ft for the next several days. Looking ahead, monsoonal southerly winds are forecast to increase to at least fresh to strong speeds E of 110W this weekend into early next week with possible tropical cyclone formation off both southern Mexico and off portions of Central America. $$ Chan ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC071102_C_KWBC_20260607110348_32440682-2118-TWDEP.txt ****0000009651**** AXPZ20 KNHC 071102 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Sun Jun 7 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 UTC. ...SPECIAL FEATURES... Tropical Depression Amanda is centered near 11.7N 135.1W at 0900 UTC, moving south-southwest at 3 kt. Estimated minimum central pressure is 1007 mb. Maximum sustained winds are 30 kt with gusts to 40 kt. Peak seas are currently near 3.5 m, or 10 ft, within 45 nm across the western semicircle. Scattered moderate convection is present up to 100 nm northwest of the center. A gradual turn toward the west-southwest is expected Sunday or Sunday night. Amanda should weaken further and become a remnant low late this evening. Please read the latest HIGH SEAS FORECAST issued by the National Hurricane Center at website - https://www.nhc.noaa.gov/text/MIAHSFEP2.shtml and the latest Amanda NHC Forecast/Advisory and Public Advisory at www.hurricanes.gov for more details. Offshore Southern and Southwestern Mexico (EP91): Numerous heavy showers and isolated thunderstorms associated with a broad area of low pressure located along the monsoon trough, a few hundred miles southwest of Zihuatanejo, Mexico will persist today. This system is becoming better organized and a tropical depression will likely form later today. The disturbance is forecast to move northeastward and then northward, and will approach the coast of southern Mexico tonight and Monday. Interests in southern Mexico should monitor the progress of this system. Regardless of development, heavy rainfall and life- threatening flash flooding are possible across portions of southern Mexico through early next week. Currently, this system has a high chance of tropical cyclone formation in next 7 days. Refer to the latest NHC Tropical Weather Outlook at www.hurricanes.gov for updates. Offshore of Central America: Scattered heavy showers and isolated thunderstorms associated with a broad area of low pressure along the monsoon trough offshore of Central America continues today. Environmental conditions remains conducive for development and a tropical depression is likely to form during the next day or two, while the system moves slowly northward toward the coast of Central America. Interests along the Pacific coasts of northwestern Costa Rica, Nicaragua, Honduras, and El Salvador should monitor the progress of this system. Regardless of development, heavy rainfall and life- threatening flash flooding are possible across portions of Costa Rica, Nicaragua, El Salvador, and Guatemala through early next week. Currently, this system has a high chance of tropical cyclone formation in the next 7 days. Refer to the latest NHC Tropical Weather Outlook at www.hurricanes.gov for updates. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A monsoon trough extends west-northwestward from northwestern Costa Rica to near 14N96W, then resumes from 13N104W to 09N131W. Scattered moderate to strong convection is noted from 01N to 10N E of 90W. Numerous moderate to scattered strong convection dominates from 07N to 14N between 95W and 105W. Scattered moderate convection is seen from 04N to 11N between 110W and 127W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... A broad ridge extends southeastward from a 1029 mb high northeast of the Hawaiian Islands near 35N149W to west of the Revillagigedo Islands near 18N126W. Weak low pressure is across the coastal waters of southern California. This pattern is producing gentle to moderate NW winds along with 5 to 7 ft seas in mixed NW and SW swells across waters near Baja California, the Revillagigedo Islands and central Mexico. Fresh to locally strong NW winds with locally higher seas are present just south of Cabo San Jose. A developing low pressure...Invest EP91 mentioned in the Special Features section is enhancing fresh to strong monsoonal SW to W winds along with 6 to 10 ft seas in large SW swell offshore of southern Mexico. Scattered to numerous heavy showers and isolated strong thunderstorms are occurring within these offshore waters. For the forecast, fresh to locally strong S to SW winds are expected in the northern Gulf of California until tonight. A broad surface ridge near 127W will sustain gentle to moderate NW winds near Baja Norte until Mon evening, Baja Surf and the Revillagigedo Islands through Wed. The exception will be fresh to locally strong NW to W winds persisting just south of Cabo San Jose through Tue evening. From Mon night through Tue night, a frontal system moving into southern California is going to bring moderate to fresh NW winds, and moderate to rough seas off Baja Norte. Afterward, the combination of merging NW and S-SW swell will prolong moderate to rough seas west of Baja Norte into midweek next week, and impact waters near Baja Sur and the Revillagigedo Islands early Mon through Wed. The wet and windy monsoonal pattern will expand northward toward the coast through Mon, with winds peaking at near-gale force and seas becoming very rough. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Clusters of scattered to numerous showers and thunderstorms across the near and offshore waters of Central America are associated with an active monsoon trough, and a developing area of low pressure along 90W. Please, see the Special Features section for more details. A weak surface pressure pattern dominates the region. Recent satellite scatterometer data indicated that a weak low pressure center is beginning to develop along 90W, while the monsoon trough has lifted to near 11N. Moderate to fresh SW to W winds prevail across most of the area south of the trough, except higher near showers and thunderstorms. Gentle to moderate winds are generally N of the trough. Seas of 6 to 8 ft in long-period SW swell dominate the offshore waters of Central America, near Colombia and the Galapagos Islands. For the forecast, a new set of large SW swell will surge across the Central America offshore waters today through early Tue. As a result, moderate seas will quickly become rough by this evening, and then very rough by Mon morning. At the same time, convergent monsoonal winds will generate periods of heavy showers and strong thunderstorms across the regional offshore waters at least into early next week. Developing low pressure south of El Salvador and Guatemala will gradually strengthen the monsoonal SW to W winds across the offshore waters of Central America through Mon evening. Therefore, anticipate moderate to fresh SW to W winds across the southern offshore waters to become fresh to strong by this afternoon, and then strong to near-gale while expanding northward on Mon. For offshore waters from Costa Rica southwestward to near the Galapagos Islands, gentle to moderate southerly winds along with rough seas in long-period SW swell will prevail through Wed. ...REMAINDER OF THE AREA... Please see the Special Features section for information on Tropical Depression Amanda located across the Tropical Pacific W of 130W. A broad ridge extends southeastward from a 1029 mb high northeast of the Hawaiian Islands near 35N149W to west of the Revillagigedo Islands near 18N126W. The pressure gradient between the ridge and T.D. Amanda is promoting moderate to fresh NE to E winds along with 6 to 8 ft seas across the waters north of 12N and W of 130W, except seas are reaching 8 to 10 ft near Amanda. Enhanced by a surface trough to the north, moderate to fresh N winds and seas of 8 to 10 ft are found north of 24N between 120W and 130W. Mainly gentle winds with seas at 6 to 7 ft in mixed NW and SW swells prevail across the remaining waters north of the monsoon trough and east of 130W. South of the monsoon trough and west of 120W, gentle to moderate SE to SW winds and 7 to 10 ft seas in large SW swell are evident. Fresh to strong SW to W monsoonal winds and 8 to 11 ft seas in long-period SW swell exist south of the monsoon trough to near the Equator and east of 120W. Gentle to moderate SE to SW winds and seas of 9 to 11 ft in longe-period SW swell prevail the rest of the waters south of the Equator. For the forecast, the aforementioned high pressure will drift westward and weaken slightly across the area through Mon as Amanda tracks southwestward over the western portion of the area, resulting in gradually diminishing winds across the trade wind zone. Larger S to SW will pass the equator this afternoon and move through the regional waters through early next week, reaching to 20N tonight through Mon. Northerly swell in the north-central waters will produce seas of 7 to 10 ft for the next several days. Fresh to strong monsoonal SW to W winds should gradually shift northward tonight through Mon evening. 10 to 12 ft seas will peak between 12 and 14 ft tonight through Mon night before gradually subsiding Tue through Wed. $$ Chan ########################### END OF MESSAGE SET ############################