Category Archives: Eastern and Central Pacific

TCs between Mexico and Hawaii

Tropical Storm John Makes Landfall in Mexico Again

Tropical Storm John made landfall on the west coast of Mexico again on Friday.  At 2:00 p.m. EDT on Friday the center of Tropical Storm John was located at latitude 18.3°N and longitude 103.2°W which put the center about 90 miles (145 km) southeast of Manzanillo, Mexico.  John was moving toward the northwest at 3 m.p.h. (5 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 996 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Punta Maldonado to Manzanillo, Mexico.

The center of Tropical Storm John moved back over the west coast of Mexico between Lazaro Cardenas and Manzanillo on Friday afternoon.  The maximum sustained wind speed in Tropical Storm John at the time of landfall was 60 m.p.h. (95 km/h).

The strongest winds were occurring in the southeastern portion of Tropical Storm John.  Winds to tropical storm force extended out 160 miles (260 km) in the southeastern quadrant of Tropical Storm John.  Winds to tropical storm force only extended out 70 miles (110 km) in the other parts of John’s circulation.

Tropical Storm John will move around the southwestern part of a high pressure system over Mexico.  The high pressure system will steer John slowly toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm John will continue to grind slowly along the west coast of Mexico.

Tropical Storm John will drop heavy rain over parts of Colima, Jalisco, and Michoacan.  Heavy rain is likely to cause flash floods in some locations.

John Strengthens Back to a Hurricane Near West Coast of Mexico

Former Tropical Storm John strengthened back to a hurricane over the Eastern North Pacific Ocean near the west coast of Mexico on Thursday morning.  At 8:00 a.m. EDT on Thursday the center of Hurricane John was located at latitude 17.3°N and longitude 102.6°W which put the center about 55 miles (90 km) south-southwest of Lazaro Cardenas, Mexico.  John was moving toward the west-northwest at 4 m.p.h. (6 km/h).  The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h).  The minimum surface pressure was 979 mb.

A Hurricane Warning is in effect for the portion of the coast from Tecpan de Galeana to Punta San Telmo, Mexico.

A Tropical Storm Warning is in effect for the portion of the coast from Punta Maldonado to Tecpan de Galeana, Mexico.  The Tropical Storm Storm Warning includes Acapulco.  A Tropical Storm Warning is also in effect for the portion of the coast from Punta San Telmo to Manzanillo, Mexico.

Former Tropical Storm John strengthened back to a hurricane on Thursday morning as the center moved over the Eastern North Pacific Ocean just off the west coast of Mexico.  A small circular eye formed at the center of Hurricane John.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms revolved around the core of John’s circulation.  Storms near the core of John generated upper level divergence that pumped mass away from the hurricane.

The circulation around Hurricane John was small.  Winds to hurricane force extended out 15 miles (25 km) from the center of John’s circulation.  Winds to tropical storm force extended out 140 miles (225 km) in the southeastern quadrant of Hurricane John.  Winds to tropical storm force only extended out 70 miles (110 km) in the other parts of John’s circulation.

Hurricane John will move through an environment favorable for intensification during the next 18 hours.  John will move over water where the Sea Surface Temperatures are near 30°C.  It will be in a region where the upper level winds are weak and there will be little vertical wind shear. Hurricane John will intensify during the next 18 hours as long as the eye stays over water.

Hurricane John will move around the southwestern part of a high pressure system over Mexico.  The high pressure system will steer John slowly toward the north-northwest during the next 24 hours. On its anticipated track, Hurricane John will make another landfall on the west coast of Mexico on Thursday night.

Hurricane John will bring strong winds and locally heavy rain to the west coast of Mexico.  The strongest winds and heaviest rain will occur in Guerrero and Colima.  Heavy rain is likely to cause flash floods and mudslides.  Hurricane John could also cause a storm surge of up to 8 feet (2.4 meters along the coast.

Tropical Storm John Redevelops West of Acapulco

Tropical Storm John redeveloped over the Eastern North Pacific Ocean west of Acapulco on Wednesday.  At 2:00 p.m. EDT on Wednesday the center of Tropical Storm John was located at latitude 16.5°N and longitude 101.4°W which put the center about 105 miles (165 km) west-southwest of Acapulco, Mexico.  John was moving toward the north-northeast at 3 m.p.h. (5 km/h).  The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 999 mb.

A Hurricane Watch is in effect for the portion of the coast from Zihuatanejo to Acapulco, Mexico.

A Tropical Storm Warning is in effect for the portion of the coast from Punta Maldonado to Lazaro Cardenas, Mexico.  The Tropical Storm Warning includes Acapulco.

The middle level circulation of former Hurricane John drifted west-southwest during the past 36 hours.  When the middle level circulation moved back over the Eastern North Pacific Ocean, it began to spin up a surface low pressure system.  The surface low pressure system intensified on Wednesday and the U.S. National Hurricane Center designated it as Tropical Storm John.

The circulation around Tropical Storm John organized rapidly on Wednesday.  The inner end of a rainband wrapped around the eastern, northern and western sides of the center of John’s circulation.  Other bands of showers and thunderstorms were revolving around the center of Tropical Storm John.  Storms near the center generated upper level divergence that pumped mass away from the tropical storm.

The strongest winds were occurring in the eastern side of Tropical Storm John.  Winds to tropical storm force extended out 80 miles (130 km) in the eastern side of John’s circulation.  The winds in the western side of Tropical Storm John were blowing at less than tropical storm force.

Tropical Storm John will move through an environment favorable for intensification during the next 24 hours.  John will move over water where the Sea Surface Temperatures are near 30°C.  It will be in a region where the upper level winds are weak and there will be little vertical wind shear.  Tropical Storm John will intensify during the next 24 hours.  John could strengthen back to a hurricane.

Tropical Storm John will move around the southwestern part of a high pressure system over Mexico.  The high pressure system will steer John slowly toward the north during the next 24 hours.  On its anticipated track, Tropical Storm John will make another landfall on the coast of Mexico on Thursday.  The center of John’s circulation is likely to make landfall between Acapulco and Zihuatanejo.

Tropical Storm John  could be a hurricane when it makes landfall.  John will bring strong winds and locally heavy rain to the coast of Mexico between Acapulco and Zihuatanejo.  Heavy rain will also fall over Guerrero as John moves inland again.  Heavy rain is likely to cause flash floods in some locations.  Tropical Storm John could cause a storm surge of up to 7 feet (2 meters) along parts of the coast of Guerrero.

Hurricane John Hits Mexico

Rapidly intensifying Hurricane John hit the coast of Mexico near Punta Maldonado on Monday night.  At 11:00 p.m. EDT on Monday the center of Hurricane John was located at latitude 16.3°N and longitude 98.8°W which put the center about 15 miles (25 km) west of Punta Maldonado, Mexico.   John was moving toward the north at 8 m.p.h. (13 km/h).  The maximum sustained wind speed was 120 m.p.h. (195 km/h) and there were wind gusts to 140 m.p.h. (225 km/h).v  The minimum surface pressure was 959 mb.

A Hurricane Warning was in effect for the portion of the coast from Acapulco to Bahias de Huatulco, Mexico.

A Tropical Storm Warning was in effect for the portion of the coast from Bahias de Huatulco to Salina Cruz, Mexico. 

Hurricane John rapidly intensified to a major hurricane as it approached the coast of Mexico near Punta Maldonado on Monday night.  A circular eye with a diameter of 6 miles (10 km) was at the center of John’s circulation.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Hurricane John.

The circulation around Hurricane John was very small.  Winds to hurricane force extended out 15 miles (25 km) from the center of John’s circulation.  Winds to tropical storm force extended out 45 miles (75 km) from the center of Hurricane John.

The Hurricane Intensity Index (HII) for Hurricane John was 22.1  The Hurricane Size Index (HSI) was 4.1 and the Hurricane Wind Intensity Size Index (HWISI) was 26.1.  Hurricane John was capable of causing localized major damage.

Hurricane John will move inland over eastern Guerrero and western Oaxaca on Tuesday.  John will bring strong winds and heavy rain to the region around Punta Maldonado.  Heavy rain is likely to cause flash floods in some locations.  Hurricane John could also cause a storm surge of up to 12 feet (3.6 meters) along the coast near Punta Maldonado.

Hurricane John will weaken very quickly as it moves inland because of the small size of its circulation.  Even though John will weaken quickly, it will still drop heavy rain over parts of eastern Guerrero and western Oaxaca.  Flash floods are likely to occur in that region on Tuesday before Hurricane John dissipates.

John Rapidly Intensifies to a Hurricane South of Mexico

Former Tropical Storm John rapidly intensified to a hurricane over the Eastern North Pacific Ocean south of Mexico on Monday.  At 2:00 p.m. EDT on Monday the center of Hurricane John was located at latitude 15.1°N and longitude 98.4°W which put the center about 85 miles (135 km) south of Punta Maldonado, Mexico.   John was moving toward the north at 3 m.p.h. (5 km/h).  The maximum sustained wind speed was 85 m.p.h. (135 km/h) and there were wind gusts to 100 m.p.h. (160 km/h).  The minimum surface pressure was 980 mb.

A Hurricane Warning was in effect for the portion of the coast from Punta Maldonado to Bahias de Huatulco, Mexico.

A Tropical Storm Warning was in effect for the portion of the coast from Bahias de Huatulco to Salina Cruz, Mexico.  A Tropical Storm Warning was also in effect for the portion of the coast from Punta Maldonado to Acapulco, Mexico.

Former Tropical Storm John continued to intensify rapidly on Monday afternoon.  A small eye was present at the center of Hurricane John.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Hurricane John.  Storms near the core of John’s circulation generated strong upper level divergence that pumped mass away from the hurricane.

The circulation around Hurricane John was small.  Winds to hurricane force extended out 15 miles (25 km) from the center of John’s circulation.  Winds to tropical storm force extended out 45 miles (75 km) from the center of Hurricane John.

Hurricane John will move through an environment favorable for intensification during the next 24 hours.  John will move over water where the Sea Surface Temperatures are near 30°C.  It will be in a region where the upper level winds are weak and there will be little vertical wind shear. Hurricane John will intensify during the next 24 hours.  John could continue to intensify rapidly.  Hurricane John could to strengthen to a major hurricane.

Hurricane John will move around the southeastern part of a large counterclockwise circulation over southern Mexico sometimes called a Central American Gyre (CAG).  The large counterclockwise circulation will steer John slowly toward the north during the next 24 hours.  On its anticipated track, the center of Hurricane John will reach the coast of Mexico near Punta Maldonado on Tuesday.

Hurricane John could be a major hurricane when it approaches the coast of Mexico.  John will bring strong winds and heavy rain to parts of southern Mexico.  Very heavy rain is likely to fall in Chiapas, Oaxaca, and southeast Guerrero.  Heavy rain is likely to cause flash floods in some locations.  Tropical Storm John also could cause a storm surge of 12 feet (3.6 meters) along parts of the coast.

 

Tropical Storm John Rapidly Intensifies South of Mexico

Tropical Storm John rapidly intensified over the Eastern North Pacific Ocean south of Mexico on Monday morning.  A Hurricane Warning was issued for a portion of the coast of Mexico.  At 8:00 a.m. EDT on Monday the center of Tropical Storm John was located at latitude 14.5°N and longitude 98.5°W which put the center about 125 miles (200 km) south of Punta Maldonado, Mexico.  John was moving toward the north-northeast at 3 m.p.h. (5 km/h).  The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h).  The minimum surface pressure was 994 mb.

A Hurricane Warning was in effect for the portion of the coast from Punta Maldonado to Bahias de Huatulco, Mexico.

A Tropical Storm Warning was in effect for the portion of the coast from Bahias de Huatulco to Salina Cruz, Mexico.

Former Tropical Depression Ten-E rapidly intensified to Tropical Storm John on Monday morning.  The inner end of a rainband wrapped around the center of John’s circulation and a small eye was forming at the center of Tropical Storm John.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Bands of showers and thunderstorms were revolving around the core of Tropical Storm John.  Storms near the core generated upper level divergence that pumped mass away from the tropical storm.

The circulation around Tropical Storm John was small.  Winds to tropical storm force extended out 35 miles (55 km) from the center of John’s circulation.

Tropical Storm John will move through an environment favorable for intensification during the next 24 hours.  John will move over water where the Sea Surface Temperatures are near 30°C.  It will be in a region where the upper level winds are weak and there will be little vertical wind shear.  Tropical Storm John will intensify during the next 24 hours.  John is likely to strengthen to a hurricane.

Tropical Storm John will move around the southeastern part of a large counterclockwise circulation over southern Mexico sometimes called a Central American Gyre (CAG).  The large counterclockwise circulation will steer John slowly toward the northeast during the next 24 hours.  On its anticipated track, Tropical Storm John will approach the coast of Mexico on Tuesday.

Tropical Storm John is likely to be a hurricane when it approaches the coast of Mexico.  John will bring strong winds and heavy rain to parts of southern Mexico.  Very heavy rain is likely to fall in Chiapas, Oaxaca, and southeast Guerrero.  Heavy rain is likely to cause flash floods in some locations.  Tropical Storm John also could cause a storm surge of 8 feet (2,4 meters) along parts of the coast.

 

Depression Prompts Tropical Storm Watch for Mexico

The formation of Tropical Depression Ten-E over the Eastern North Pacific Ocean prompted the issuance of a Tropical Storm Watch for a portion of the coast of Mexico.  At 5:00 p.m. EDT on Sunday the center of Tropical Depression Ten-E was located at latitude 13.8°N and longitude 98.7°W which put the center about 175 miles (280 km) south of Punta Maldonado, Mexico.  The tropical depression was stationary.  The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h).  The minimum surface pressure was 1005 mb.

A Tropical Storm Watch was in effect for the portion of the coast from Punta Maldonado to Salina Cruz, Mexico.

A low pressure system over the Eastern North Pacific Ocean strengthened on Sunday afternoon and the U.S. National Hurricane Center designated the system as Tropical Depression Ten-E.  More thunderstorms formed near the center of Tropical Depression Ten-E.  Bands of showers and thunderstorms began to revolve around the center of the tropical depression.  Storms near the center of circulation began to generate upper level divergence that pumped mass away from the tropical depression.

Tropical Depression Ten-E will move through an environment favorable for intensification during the next 24 hours.  The tropical depression will be over water where the Sea Surface Temperatures are near 30°C.  It will be in a region where the upper level winds are weak and there will be little vertical wind shear.  Tropical Depression Ten-E is likely to strengthen to a tropical storm during the next 24 hours.

Tropical Depression Ten-E will be in an area where the steering winds are weak during the next 24 hours.  The tropical depression is likely to move very slowly toward the north on Monday.  On its anticipated track, Tropical Depression Ten-E will move a little closer to Mexico.

Tropical Storm Ileana Makes Landfall on West Coast of Mexico

The center of Tropical Storm Ileana made landfall on the west coast of Mexico south of Los Mochis on Saturday afternoon.  At 5:00 p.m. EDT on Saturday the center of Tropical Storm Ileana was located at latitude 25.5°N and longitude 108.9°W which put the center about 20 miles (30 km) south-southeast of Los Mochis, Mexico.  Ileana was moving toward the north at 6 m.p.h. (10 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1002 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Altata to Huatabampito, Mexico.

The center of Tropical Storm Ileana made landfall on the west coast of Mexico near Topolobampo.  Thunderstorms were occurring in bands in the northern and eastern sides of the center of Ileana’s circulation.   Bands in the southern and western parts of Tropical Storm Ileana consisted primarily of showers and lower clouds.

The strongest winds were occurring in the eastern side of Tropical Storm Ileana.  Winds to tropical storm force extended out 60 miles (95 km) in the eastern side of Ileana’s circulation.  The winds in the western side of Tropical Storm Ileana were blowing at less than tropical storm force.

Tropical Storm Ileana will move around the western side of a high pressure system over Mexico.  The high pressure system will steer Ileana toward the north-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Ileana will move near the west coast of Mexico.

Tropical Storm Ileana will weaken to a tropical depression this evening as it moves a little farther inland.  Ileana will bring gusty winds and locally heavy rain to parts of Sinaloa.  Heavy rain could cause flash floods in some locations.

Tropical Storm Ileana Brings Wind and Rain to Southern Baja California

Tropical Storm Ileana brought gusty winds and rain to the southern part of Baja California on Friday afternoon.  At 5:00 p.m. EDT on Friday the center of Tropical Storm Ileana was located at latitude 22.7°N and longitude 109.4°W which put the center about 35 miles (55 km) east-southeast of Cabo San Lucas, Mexico.   Ileana was moving toward the north-northwest at 7 m.p.h. (11 km/h).   The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (9 km/h).   The minimum surface pressure was 1000 mb.

A Tropical Storm Warning is in effect for the portion of the coast from Santa Fe to San Evaristo, Mexico.  The Tropical Storm Warning includes Cabo San Lucas and La Paz.

A Tropical Storm Watch is in effect for the portion of the coast from San Evaristo to Loreto, Mexico.  A Tropical Storm Watch is in effect for the portion of the coast from Topolobampo to Huatabampito, Mexico.

The circulation around Tropical Storm Ileana was not particularly well organized on Friday afternoon.  The northwestern part of Illeana’s circulation was passing over the southern end of Baja California.  The flow of air over land may have been disrupting the circulation.  Thunderstorms were occurring in bands revolving around the center of Tropical Storm Ileana.  Easterly winds pushing air up slopes in southern Baja California may have been contributing to the development of thunderstorms in that part of Ileana’s circulation.  Storms near the center of Ileana generated upper level divergence that pumped mass away to the northeast of the tropical storm.

The distribution of wind speeds in Tropical Storm Ileana was asymmetrical.  Winds to tropical storm force extended out 60 miles (95 km) in the eastern side of Ileana’s circulation.  The winds in the western part of Tropical Storm Ileana were blowing at less than tropical storm force.

Tropical Storm Ileana will move through an environment that will become less favorable for intensification during the next 24 hours.  Ileana will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the southern part of an upper level trough over the Southwest U.S.  The upper level trough will produce southwesterly winds that will blow toward the top of Ileana’s circulation.  Those winds will cause the vertical wind shear to increase.  Tropical Storm Ileana is likely to weaken when the vertical wind shear increases.  The center of Ileana’s circulation could move across the southeastern tip of Baja California, which would also cause Tropical Storm Ileana to weaken.

Tropical Storm Ileana will move around the western end of a high pressure system over Mexico.  The high pressure system will steer Ileana toward the north during the next 24 hours.  On its anticipated track, the center of Tropical Storm Ileana will move across the southeastern tip of Baja California and over the southern Gulf of California.

Tropical Storm Ileana will continue to bring gusty winds and locally heavy rain to the southern part of Baja California during the next 24 hours.  Heavy rain could cause flash floods in some locations.

 

Tropical Storm Ileana Forms South of Baja California

Tropical Storm Ileana formed south of Baja California on Thursday afternoon.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Ileana was located at latitude 19.9°N and longitude 108.0°W which put the center about 240 miles (385 km) south-southeast of Cabo San Lucas, Mexico.  Ileana was moving toward the north-northwest at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1001 mb.

A Tropical Storm Warning is in effect for the portion of the coast from Santa Fe to San Evaristo, Mexico.  The Tropical Storm Warning includes Cabo San Lucas and La Paz.

A Tropical Storm Watch is in effect for the portion of the coast from San Evaristo to Loreto, Mexico.  A Tropical Storm Watch is in effect for the portion of the coast from Topolobampo to Huatabampito, Mexico.

A low pressure system over the Eastern North Pacific Ocean south of Baja California strengthened on Thursday afternoon and the U.S. National Hurricane Center designated the system as Tropical Storm Ileana.  More thunderstorms were developing near the center of Ileana’s circulation.  However, the distribution of theunderstorms in Tropical Storm Ileana was asymmetrical.  Thunderstorms were occurring in bands in the western side of Ileana’s circulation.  Bands in the eastern side of Ileana consisted primarily of showers and lower clouds.

The distribution of wind speeds in Tropical Storm Ileana was also asymmetrical.  Winds to tropical storm force extended out 80 miles (130 km) in the northeastern quadrant of Ileana’s circulation.  The winds in the other parts of Ileana were blowing at less than tropical storm force.

Tropical Storm Ileana will move through an environment somewhat favorable for intensification during the next 24 hours.  Ileana will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the southwestern part of an upper level ridge over Mexico.  The upper level ridge will produce easterly winds that will blow toward the top of Ileana’s circulation.  Those winds will cause moderate vertical wind shear.  The wind shear will inhibit intensification, but the shear will not be enough to prevent intensification.  Tropical Storm Ileana is likely to intensify during the next 24 hours.

Tropical Storm Ileana will move around the western end of a high pressure system over Mexico.  The high pressure system will steer Ileana toward the north-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Ileana will reach the southern end of Baja California on Friday morning.

Tropical Storm Ileana will bring gusty winds and locally heavy rain to the southern part of Baja California.  Heavy rain could cause flash floods in some locations.