--------------------------------------------------------------------------- TROPICAL WEATHER DISCUSSION (EASTERN PACIFIC AREA) MESSAGES T1T2: AX A1A2: PZ Date: 2026-06-09 --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC090303_C_KWBC_20260609030413_32440682-2296-TWDEP.txt ****0000009630**** AXPZ20 KNHC 090303 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 0405 UTC Tue Jun 9 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 0200 UTC. ...SPECIAL FEATURES... Tropical Storm Boris is centered near 16.0N 98.3W at 09/0300 UTC, moving north at 2 kt. Estimated minimum central pressure is 1001 mb. Maximum sustained wind speed is 40 kt with gusts to 50 kt. Peak seas are currently around 18 ft or 5.5 m. Numerous moderate isolated to scattered strong convection is noted from 06N to 19N between 94W and 107W. Boris is moving slowly toward the north, and a turn toward the northwest and an increase in forward speed is expected overnight. On the forecast track, the center of Boris should reach the coast of Oaxaca and Guerrero, Mexico, late tonight into Tue morning. Little change in strength is forecast until landfall. Rapid weakening will occur after the center crosses the coast of southern Mexico. Heavy rainfall associated with Tropical Storm Boris will impact portions of southern Mexico. This rainfall will likely produce life- threatening flooding and mudslides, especially in areas of steep terrain. 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 Boris NHC Forecast/Advisory and Public Advisory at www.hurricanes.gov for more details. Tropical Storm Cristina is centered near 12.5N 87.8W at 09/0300 UTC, moving north at 2 kt. Estimated minimum central pressure is 1004 mb. Maximum sustained wind speed is 40 kt with gusts to 50 kt. Peak seas are currently around 18 ft or 5.5 m. Numerous strong convection is noted within 180 nm in the E semicircle and 90 nm W semicircle. Scattered moderate convection is noted elsewhere from 04N to 14N between 78W and 94W. Cristina is moving slowly toward the north, and a slow meandering motion is forecast for the next day or so followed by a slow northwestward motion. On the forecast track, Cristina should move near or along the coast of Nicaragua, Honduras and El Salvador over the next couple of days. Little change is strength is forecast over the next day or two. Heavy rainfall associated with Tropical Storm Cristina will impact coastal portions of Central America through Thu. This rainfall may produce life-threatening flooding and mudslides, especially in areas of steep terrain. 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 Cristina NHC Forecast/Advisory and Public Advisory at www.hurricanes.gov for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A monsoon trough extends from northern Colombia to across the SW Caribbean Sea and along northern Panama to Costa Rica near 10N83W to 10.5N86W where it ends due to Tropical Storm Cristina to the NW, then resumes well SW of Tropical Storm Boris from 10N102W to 07N116W to 08N123W. The ITCZ extends from 08N123W to 11N137W then resumes W of 140W. Associated and nearby convection is described above with Tropical Storm Boris and Tropical Storm Cristina. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section for details on Tropical Storm Boris approaching the coast of southern/SW Mexico. Otherwise, a broad ridge extends from a 1028 mb high NE of the Hawaiian Islands near 34N147W southeastward to near the Revillagigedo Islands. Broad low pressure extends from southern California SSE across the eastern coast of Baja California Norte. This pattern is supporting light to gentle NW to N winds W of 110W including offshore Baja California, where seas are mainly 7-9 ft in a mix of converging S-SW and shorter period NW swell. Gentle NW winds across the waters of Baja Sur turn westerly around the coast at Cabo San Lucas resulting in fresh to locally strong westerly winds wrapping around the southern tip of Baja California, while a few areas of moderate W gap winds prevail inside the southern Gulf of California. Moderate S to SW winds are in the northern Gulf of California N of 30N and W of 114W. Gentle to moderate NW winds are found from 15N to 22N, then become fresh to strong from Cabo Corrientes to the area surrounding Boris. Seas are 7-15 ft E of 110W to the W and S of Boris, and large cross-equatorial SW swell continues to move into the area waters. In the Gulf of California, seas are 2-3 ft N of 30N, 1-3 ft across the remainder of the northern and central Gulf, and 4-7 ft in the southern Gulf with southerly swell moving through the entrance. For the forecast, Tropical Storm Boris will move inland and weaken to a tropical depression near 16.6N 98.7W Tue morning, inland to 17.5N 99.8W Tue evening, and dissipate Wed morning. Elsewhere, a broad surface ridge will sustain gentle to moderate NW winds across the Baja Norte waters through Wed, and across the Baja Sur to Revillagigedo Islands through early Wed before weakening. Moderate to fresh NW to N winds and moderate to rough seas will prevail across the far outer waters of Baja Norte for the early part of the week. Large, cross equatorial S-SW swell will continue to impact southern and southwestern Mexico waters through Tue night, and the Baja California waters through Wed, and will generate very large and powerful coast along the local coasts and offshore reefs. This swell will also merge with shorter period NW swell across the Baja waters. Marine conditions should significantly improve by the end of the week and into the upcoming weekend, with tranquil conditions across the offshore waters of Mexico. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Please see the Special Features section for details on Tropical Storm Cristina, just offshore of the Gulf of Fonseca. Numerous deep convection continues to impact much of the offshore waters from Costa Rica to central Nicaragua, due to the well defined monsoonal circulation and Cristina. Additional details are also described above. Fresh to strong SW to W winds dominate the waters south of Cristina to 08N between 86W and 92W, except weaker winds nearshore western El Salvador as well as nearshore Guatemala. Winds are gentle to moderate across the remainder of the waters including southern Costa Rica, Panama, Colombia, and Ecuador. Large, long period cross-equatorial southerly swell continues to impact the offshore waters of Central America and northern South America with seas of 7-11 ft, except higher N of 09N. For the forecast, Tropical Storm Cristina will move to 12.5N 87.8W Tue morning, 12.7N 87.9W Tue evening, 13.0N 88.5W Wed morning, move inland and weaken to a tropical depression near 13.7N 89.7W Wed evening, inland to 14.6N 90.4W Thu morning, and dissipate Thu evening. Otherwise, large, cross-equatorial S-SW swell with seas of 8-15 ft will continue to impact the area waters through the early part of the week resulting in large and powerful surf along the coasts. Refer to your local meteorological information for more details on the surf zone and beach impacts. Mainly gentle to moderate winds will prevail away from Cristina through the week. ...REMAINDER OF THE AREA... The 1009 mb Remnant Low of Amanda is analyzed near 10.5N138.5W. Isolated moderate convection is noted within 150 nm in the NW semicircle of the low. Fresh to strong winds are found within 180 nm in the NW semicircle, while seas of 7-10 ft are found from 10N to 16N between 130W and 140W. Otherwise, a broad ridge extends from a 1028 mb high NE of the Hawaiian Islands near 34N147W southeastward to near the Revillagigedo Islands. Moderate to fresh N to NE winds are found elsewhere S of the ridge to 12N and W of 120W. Seas are 6-9 ft elsewhere N of 10N and W of 120W as well as across the waters E of 120W, higher N of 08N and E of 102W closer to Tropical Storm Boris and Tropical Storm Cristina. Seas are 6-7 ft S of 10N and W of 120W. For the forecast, the Remnant Low of Amanda will continue to spin down and weaken early in the week, moving W of 140W Tue. Moderate to locally fresh trades will continue to dominate the waters N of 10N and W of 120W under ridging for the early part of the week, then will weaken as the gradient weakens by the middle through the end of the week. Winds will be moderate or weaker elsewhere for the start of the week, except higher near the offshore waters of southern Mexico and northern Central America near Boris and Cristina. Meanwhile, northerly swell in the N-central waters will produce seas of 7-10 ft for the next several days. Large cross-equatorial southerly swell will continue northward through the regional waters through the early part of the week and merge with the northerly swell. Seas S of 20N and E of 120W will peak at 10-15 ft seas through tonight before gradually subsiding Tue through Wed. $$ Lewitsky ########################### END OF MESSAGE SET ############################ --------------------------------------------------------------------------- Message File: T_AXPZ20KNHC090842_C_KWBC_20260609084314_9109880-5294-TWDEP.txt ****0000010091**** AXPZ20 KNHC 090842 TWDEP Tropical Weather Discussion NWS National Hurricane Center Miami FL 1005 UTC Tue Jun 9 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 0700 UTC. ...SPECIAL FEATURES... Tropical Storm Boris is centered near 16.4N 98.4W at 09/0900 UTC, moving north-northwest at 5 kt. Estimated minimum central pressure is 1003 mb. Maximum sustained wind speed is 35 kt with gusts to 45 kt. Peak seas are currently around 13 ft or 4.0 m. Limited convection is noted over water with scattered moderate noted in the SW semicircle along the coast and just offshore, while much more intense convection is to the ENE over land, numerous moderate to strong between 91W and 96W over southern Mexico. Scattered moderate convection is noted elsewhere from 13N to 19N between 91W and 98W. Boris is moving toward the north- northwest. A turn toward the northwest and an increase in forward speed is expected early this morning. On the forecast track, the center of Boris will move farther inland over eastern Guerrero this morning. Rapid weakening is expected, and Boris is forecast to dissipate this afternoon. Heavy rainfall associated with Tropical Storm Boris will impact portions of southern Mexico. This rainfall will likely produce life-threatening flooding and mudslides, especially in areas of steep terrain. 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 Boris NHC Forecast/Advisory and Public Advisory at www.hurricanes.gov for more details. Tropical Storm Cristina is centered near 12.7N 87.6W at 09/0900 UTC, moving north-northeast at 3 kt. Estimated minimum central pressure is 1006 mb. Maximum sustained wind speed is 35 kt with gusts to 45 kt. Peak seas are currently around 17 ft or 5.0 m. Scattered to numerous moderate and isolated strong convection is noted within 180 nm in the S semicircle of Cristina. Scattered moderate convection is noted elsewhere from 05N TO 13N between 81W and 98W. Cristina is moving toward the north-northeast. The storm is forecast to meander near the coast today before turning toward the northwest and west-northwest through midweek. On the forecast track, Cristina should move near or along the coast of Nicaragua, Honduras, and El Salvador during the next couple of days. Little change in strength is forecast today, followed by some weakening through midweek. Heavy rainfall associated with Tropical Storm Cristina will impact coastal portions of Central America through Thursday. This rainfall may produce life- threatening flooding and mudslides, especially in areas of steep terrain. 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 Cristina NHC Forecast/Advisory and Public Advisory at www.hurricanes.gov for more details. ...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH... A monsoon trough extends from the coast of NW Colombia in the SW Caribbean Sea to just N of Panama to along the border of Costa Rica and Nicaragua with Tropical Storm Cristina just to the NW, then resumes well SSW of Tropical Storm Boris from 12N98W to 07N117W. The ITCZ extends from 07N117W to 09N135W, then resumes W of 140W to the SW of the Remnant Low of Amanda. Other than the convection described above and associated with Boris and Cristina, scattered moderate isolated strong is noted within 330 nm SSE of the monsoon trough between 98W and 106W. ...OFFSHORE WATERS WITHIN 250 NM OF MEXICO... Please see the Special Features section for details on Tropical Storm Boris near the coast of southern/SW Mexico. Otherwise, a broad ridge extends from a 1028 mb high well NE of the Hawaiian Islands near 33N146W southeastward to near the Revillagigedo Islands. Broad low pressure extends from southern California SSE across the eastern coast of Baja California Norte. This pattern is supporting moderate to locally fresh NW-N winds offshore Baja California Norte, and gentle to moderate offshore Baja California Sur. Winds across the waters of Baja Sur turn westerly around the coast at Cabo San Lucas resulting in fresh westerly winds wrapping around the southern tip of Baja California, while a few areas of moderate to fresh W gap winds prevail inside the southern Gulf of California, mainly from 24N to 25.5N. Moderate S to SW winds are in the northern Gulf of California N of 30N and W of 113.5W. Gentle to moderate NW winds are found elsewhere 16N to 23N between 106W and 116W, including the Revillagigedo Islands, then become moderate to fresh from Cabo Corrientes to the area surrounding Boris. Seas are 8-14 ft offshore southern and SW Mexico mainly in large, long period cross-equatorial S-SW swell. Seas are 7-9 ft offshore Baja California in mixed NW and the southerly swell. In the Gulf of California, seas 1-3 ft, except 4-7 ft in the southern Gulf with southerly swell moving through the entrance. For the forecast, Tropical Storm Boris will move inland and weaken to a tropical depression near 17.1N 99.1W this afternoon, and dissipate Wed morning. Elsewhere, a broad surface ridge will sustain gentle to moderate NW winds across the Baja Norte waters through Wed, and across the Baja Sur to Revillagigedo Islands through early Wed before weakening, except moderate to fresh NW-N winds and moderate to rough seas across the far outer waters of Baja Norte today. Large, cross equatorial S-SW swell will continue to impact southern and southwestern Mexico waters through tonight, and the Baja California waters through Wed, and will generate very large and powerful coast along the local coasts and offshore reefs. This swell will also merge with shorter period NW swell across the Baja waters. Marine conditions should significantly improve by the end of the week and into the upcoming weekend, with tranquil conditions across the offshore waters of Mexico. ....OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, AND WITHIN 750 NM OF ECUADOR... Please see the Special Features section for details on Tropical Storm Cristina, just offshore of the Gulf of Fonseca, including associated deep convection and heavy rainfall potential. Fresh to strong SW to W winds dominate the waters around Cristina from 09N to 13.5N between 86W and 91W, including the Gulf of Papagayo, with nearshore winds off western El Salvador and Guatemala of gentle to moderate, and then moderate to fresh there farther offshore. Winds are gentle to moderate across the remainder of the waters including southern Costa Rica, Panama, Colombia, and Ecuador. Large, long period cross-equatorial southerly swell continues to impact the offshore waters of Central America and northern South America with seas of 7-11 ft, except higher N of 09N. For the forecast, Tropical Storm Cristina will move to 12.9N 87.7W this afternoon, weaken to a tropical depression near 13.2N 88.2W Wed morning, inland to 13.5N 88.8W Wed afternoon, inland to 14.0N 89.5W Thu morning, and dissipate Thu afternoon. Otherwise, large, cross-equatorial S-SW swell with seas of 8-15 ft will continue to impact the area waters through tonight into early Wed, resulting in large and powerful surf along the coasts. Refer to your local meteorological information for more details on the surf zone and beach impacts. Moderate seas will prevail across the offshore waters for the end of the week. Mainly moderate or weaker winds will prevail away from Cristina through the remainder of the week and into the upcoming weekend. ...REMAINDER OF THE AREA... The 1008 mb Remnant Low of Amanda is analyzed near 10.5N139W. Isolated moderate convection is noted between 45 nm and 90 nm in the NE semicircle, with similar convection between 90 nm and 240 nm in the SW semicircle, including W of 140W. Fresh to strong winds are found within 240 nm in the NW semicircle, while seas of 7-10 ft are found from 09.5N to 15N between 135W to beyond 140W. Otherwise, a broad ridge extends from a 1028 mb high well NE of the Hawaiian Islands near 33N146W southeastward to near the Revillagigedo Islands. Moderate to fresh N to NE winds are found elsewhere S of the ridge to 12N and W of 120W. Seas are 6-9 ft elsewhere N of 10N and W of 120W as well as across the waters E of 120W, higher N of 08N and E of 104W closer to Tropical Storm Boris and Tropical Storm Cristina. Seas are 6-7 ft S of 09.5N and W of 120W. For the forecast, the Remnant Low of Amanda will continue to spin down and weaken early in the week, moving W of 140W later today. Moderate to locally fresh trades will continue to dominate the waters N of 10N and W of 120W under ridging through tonight or so, then will weaken as the gradient weakens by the middle through the end of the week. Winds will be moderate or weaker elsewhere through tonight into early Wed, except higher near the offshore waters of southern Mexico and northern Central America near Boris and Cristina. Meanwhile, northerly swell in the N-central waters will produce seas of 7-10 ft for the next several days. Large cross-equatorial southerly swell will continue northward through the regional waters through tonight into early Wed, while merging with the northerly swell. Moderate seas will dominate the open waters by the end of the week into the upcoming weekend. $$ Lewitsky ########################### END OF MESSAGE SET ############################