Tag Archives: Acapulco

Tropical Storm Vance Forms South of Mexico

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Tropical Storm Vance formed over the Eastern North Pacific Ocean south of Mexico on Wednesday.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Vance was located at latitude 9.4°N and longitude 99.8°W which put the center about 520 miles (835 km) south of Acapulco, Mexico.  Vance was moving toward the west at 7 m.p.h. (11 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 1003 mb.

A low pressure system over the Eastern North Pacific Ocean south of Mexico strengthened on Wednesday and the U.S. National Hurricane Center designated the system as Tropical Storm Vance.

More thunderstorms developed in bands revolving around the center of Tropical Storm Vance on Wednesday afternoon.  Storms near the center of Vance’s circulation began to generate upper level divergence that pumped mass away from the tropical storm.  The removal of mass caused the surface pressure to decrease.

The strongest winds were occurring in the northern side of Tropical Storm Vance.  Winds to tropical storm force extended out 70 miles (110 km) in the northern side of Vance’s circulation.  The winds in the southern part of Tropical Storm Vance were blowing at less than tropical storm force.

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

Tropical Storm Vance will move around the southwestern part of a high pressure system that is over southern Mexico.  The high pressure system will steer Vance toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Vance will start to move closer to the west coast of Mexico on Thursday.

Trudy Intensifies to a Major Hurricane

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Hurricane Trudy intensified to a major hurricane on Thursday night as it moved over the Eastern North Pacific Ocean south of Mexico.  At 8:00 a.m. EDT on Friday the center of Hurricane Trudy was located at latitude 14.5°N and longitude 102.5°W which put the center about 240 miles (385 km) southwest of Acapulco, Mexico.  Trudy was moving toward the northwest at 6 m.p.h. (15 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).  The minimum surface pressure was 956 mb.

A Hurricane Watch is in effect for the portion of the coast from Punta San Telmo to Cabo Corrientes, Mexico.

A Tropical Storm Warning is in effect for the portion of the coast from Manzanillo to Zihuatanejo, Mexico.

Hurricane Trudy intensified to a major hurricane on Thursday night.

A circular eye with a diameter of 17 miles (28 km) was at the center of Hurricane Trudy.  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 Trudy’s circulation.  Storms near the core of Trudy generated upper level divergence that pumped mass away from the hurricane.  The removal of mass caused the surface pressure to decrease.

Winds to hurricane force extended out 30 miles (50 km) from the center of Hurricane Trudy.  Winds to tropical storm force extended out 140 miles (225 km) from the center of Trudy’ circulation.

The Hurricane Intensity Index (HII) for Hurricane Trudy is 22.1.  The Hurricane Size Index (HSI) is 20.3 and the Hurricane Wind Intensity Size Index (HWISI) is 42.4.  Hurricane Trudy is similar in intensity to Hurricane Milton when Milton hit Florida in 2024.  Trudy is not quite as large as Milton was.

Hurricane Trudy will move through an environment that will be favorable for intensification during the next 24 hours.  Trudy will move over water where the Sea Surface Temperatures are near 30°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Hurricane Trudy will intensify during the next 24 hours.

Hurricane Trudy will move around the western side of a high pressure system that is over Mexico.  The high pressure system will steer Trudy toward the northwest during the next 24 hours.  On its anticipated track, Hurricane Trudy will move closer to the coast of southwestern Mexico.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Simon was weakening south of Baja California.  At 5:00 a.m. EDT on Friday the center of Tropical Storm Simon was located at latitude 20.0°N and longitude 108.8°W which put the center about 210 miles (335 km) south-southeast of Cabo San Lucas, Mexico.  Simon was moving toward the 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 1002 mb.

Trudy Strengthens to a Hurricane

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Former Tropical Storm Trudy strengthened to a hurricane on Wednesday night as it moved over the Eastern North Pacific Ocean south of Mexico.  At 5:00 a.m. EDT on Thursday the center of Hurricane Trudy was located at latitude 12.9°N and longitude 101.6°W which put the center about 300 miles (480 km) south-southwest of Acapulco, Mexico.  Trudy was moving toward the northwest at 9 m.p.h. (15 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 989 mb.

Former Tropical Storm Trudy strengthened to a hurricane on Wednesday night.

Tall thunderstorms were occurring near the center of Hurricane Trudy.  Thunderstorms were also occurring in bands revolving around the center of Trudy’s circulation.  Storms near the center of Trudy generated upper level divergence that pumped mass away from the hurricane.  The removal of mass caused the surface pressure to decrease.

The strongest winds were occurring in the northern side of Hurricane Trudy.  Winds to hurricane force extended out 25 miles (40 km) in the northern side of Trudy’s circulation.  Winds to tropical storm force extended out 115 miles (185 km) from the center of Hurricane Trudy.

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

Hurricane Trudy will move around the western side of a high pressure system that is over Mexico.  The high pressure system will steer Trudy toward the west-northwest during the next 24 hours.  On its anticipated track, Hurricane Trudy will move closer to the coast of southwestern Mexico.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Simon was still meandering west of Mexico.  At 5:00 a.m. EDT on Thursday the center of Tropical Storm Simon was located at latitude 19.2°N and longitude 108.5°W which put the center about 200 miles (320 km) west-southwest of Cabo Corrientes, Mexico.  Simon was stationary.  The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h).  The minimum surface pressure was 996 mb.

Hurricane Simon Meanders West of Mexico

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Hurricane Simon meandered over the Eastern North Pacific Ocean west of Mexico on Tuesday.  At 11:00 p.m. EDT on Tuesday the center of Hurricane Simon was located at latitude 20.1°N and longitude 107.6°W which put the center about 125 miles (200 km) west of Cabo Corrientes, Mexico.  Simon was moving toward the west at 2 m.p.h. (3 km/h).  The maximum sustained wind speed was 110 m.p.h. (175 km/h) and there were wind gusts to 130 m.p.h. (210 km/h).  The minimum surface pressure was 965 mb.

A Hurricane Watch is in effect for Las Islas Marias.

Hurricane Simon strengthened on Tuesday evening as it meandered just to the west of Mexico.

A very small circular eye with a diameter of 6 miles (10 km) was at the center of Hurricane Simon.  The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms.  Short bands of showers and thunderstorms were revolving around the core of Simon’s circulation.  Storms near the core of Simon generated upper level divergence that pumped mass away from the hurricane.  The removal of mass in the upper levels was greater than the convergence of mass in the lower levels of the atmosphere.  So, the surface pressure decreased on Tuesday evening.

The circulation around Hurricane Simon was very small.  Winds to hurricane force extended out 15 miles (25 km) from the center of Simon’s circulation.  Winds to tropical storm force extended out 35 miles (55 km) from the center of Hurricane Simon.

The Hurricane Intensity Index (HII) for Hurricane Simon is 19.2.  The Hurricane Size Index (HSI) is 4.7 and the Hurricane Wind Intensity Size Index (HWISI) is 23.9.  Hurricane Simon is similar in intensity to Hurricane Zeta when Zeta hit Louisiana in 2020.  Simon is much smaller than Zeta was.

Hurricane Simon will move through an environment favorable for intensification during the next 12 hours.  Simon will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the middle of an upper level ridge that is over Mexico and the Eastern North Pacific Ocean.  The upper level winds are weak near the middle of the ridge and there will be little vertical wind shear.  Hurricane Simon could intensify back to a major hurricane during the next 12 hours.  Simon could meander back over cooler water it has mixed to the surface later on Wednesday.  If Simon meanders over that cooler water, then it is likely to weaken, because it will extract less energy from the ocean.

Hurricane Simon will be in an area where the steering winds are weak during the next 24 hours.  On its anticipated track, Hurricane Simon will continue to meander slowly west of Mexico on Wednesday.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Trudy formed south of Mexico.

At 11:00 p.m. EDT on Tuesday the center of Tropical Storm Trudy was located at latitude 20.1°N and longitude 107.6°W which put the center about 440 miles (705 km) south-southeast of Acapulco, Mexico.  Trudy was moving toward the northwest at 10 m.p.h. 165 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 1004 mb.

Hurricane Polo Nears Southern Baja California

Hurricane Polo moved nearer to the coast of southern Baja California on Sunday evening.

At 11:00 p.m. EDT on Sunday the center of Hurricane Polo was located at latitude 22.8°N and longitude 114.0°W which put the center about 175 miles (280 km) southwest of Cabo San Lazaro, Mexico.  Polo was moving toward the north at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 125 m.p.h. (200 km/h) and there were wind gusts to 150 m.p.h. (240 km/h).  The minimum surface pressure was 951 mb.

A Hurricane Warning is in effect for the portion of the west coast of Baja California from Punta Abreojos to Santa Fe, Mexico.

A Hurricane Warning is in effect for the portion of the east coast of Baja California from  Loreto to Santa Rosalia, Mexico.

A Hurricane Warning is in effect for the portion of the coast from Guaymas to Huatabampito, Mexico.

A Tropical Storm Warning and a Hurricane Watch  is in effect for the portion of the coast from Punta Eugenia to Punta Abreojos, Mexico.

A Tropical Storm Warning and a Hurricane Watch is in effect for the portion of the coast from ; Loreto to San Evaristo, Mexico.

A Tropical Storm Warning and a Hurricane Watch is in effect for the portion of the coast from Santa Rosalia to Bahia San Juan Bautista, Mexico

A Tropical Storm Warning and a Hurricane Watch is in effect for the portion of the coast from Guaymas to Bahia Kino, Mexico.

A Tropical Storm Warning and a Hurricane Watch is in effect for the portion of the coast from Huatabampito to Topolobampo, Mexico.

Hurricane Polo was still a major hurricane on Sunday evening.  A circular eye with a diameter of 17 miles (28 km) was present at the center of Polo’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 center of Hurricane Polo.  Storms near the center of Polo generated upper level divergence that pumped mass away from the hurricane.  The removal of mass in the upper levels was nearly equal to the convergence of mass in the lower levels of the atmosphere.  So, the surface pressure did not change much on Sunday.

The distribution of wind speeds in Hurricane Polo was fairly symmetrical.  Winds to hurricane force extended out 45 miles (75 km) from the center of Polo’s circulation.  Winds to tropical storm force extended out 105 miles (165 km) from the center of Hurricane Polo.

The Hurricane Intensify Index (HII) for Hurricane Polo is 23.4. The Hurricane Size Index (HSI) is 14.6 and the Hurricane Wind Intensity Size Index (HWISI) is 38.0.  Hurricane Polo is similar in size and intensity to Hurricane Milton when Milton hit Florida in 2024.

Hurricane Polo will move through an environment that will be unfavorable for intensification during the next 24 hours.  Polo will move over water where the Sea Surface Temperatures are near 28°C.  However, Polo will move under the southern part of an upper level trough that is near the West Coast of the U.S.  The upper level trough will produce southwesterly winds that will blow toward the top of Polo’s circulation.  Those winds will cause the vertical wind shear to increase on Monday.  Hurricane Polo will weaken during the next 24 hours because of more vertical wind shear.

The upper level trough near the West Coast of the U.S. will pull Hurricane Polo toward the northeast during the next 24 hours.  On its anticipated track, the center of Hurricane Polo will make landfall on the coast of southwest Baja California north of Cabo San Lazaro on Monday afternoon.

Hurricane Polo will bring strong winds and heavy rain to southern Baja California. Heavy rain is likely to cause flash floods in some locations.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Rachel formed south of Mexico.

At 11:00 p.m. EDT on Sunday the center of Tropical Storm Rachel was located at latitude 12.9°N and longitude 99.8°W which put the center about 275 miles (445 km) south-southwest of Acapulco, Mexico.  Rachel was moving toward the west at 7 m.p.h. (11 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 1003 mb.

A Tropical Storm Watch is in effect for the portion of the coast from Punta San Telmo to Playa, Perula, Mexico.

Tropical Storm Cristina Meanders West of Nicaragua

Tropical Storm Cristina was meandering over the Eastern North Pacific Ocean just to the west of northwestern Nicaragua on Tuesday afternoon.  At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Cristina was located at latitude 12.7°N and longitude 87.8°W which put the center about 110 miles (175 km) west-northwest of Managua, Nicaragua.   Cristina was moving toward the west-northwest at 1 m.p.h. (2 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 1006 mb.

A Tropical Storm Warning is in effect for the portion of the coast from Puerto Sandino, Nicaragua to the border with Honduras.  A Tropical Storm Warning is in effect for the Pacific coast of Honduras.  A Tropical Storm Warning is in effect for the entire coast of El Salvador.

The circulation around Tropical Storm Cristina exhibited more organization on Tuesday afternoon.  More thunderstorms formed near the center of Cristina’s circulation.  New thunderstorms also developed in bands in the western and southern parts of Tropical Storm Cristina.  Bands in the eastern and northern sections of Cristina’s circulation still consisted primarily of showers and lower clouds.  Storms near the center of Cristina generated upper level divergence that pumped mass away to the west of the tropical storm.  The removal of mass in the upper levels of the atmosphere was nearly equal to the convergence of mass in the lower levels.  So, the surface pressure did not change much.

The distribution of wind speeds in Tropical Storm Cristina was asymmetrical.  Winds to tropical storm force extended out 80 miles (130 km) in the southern half of Cristina’s circulation.  The winds in the northern half of Tropical Storm Cristina were blowing at less than tropical storm force.

Tropical Storm Cristina will move through an environment somewhat favorable for intensification during the next 24 hours.  Cristina will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the western side of an upper level low that is over the Southwestern Caribbean Sea.  The upper level low will produce northeasterly winds that will blow toward the top of Cristina’s circulation.  Those winds will cause moderate vertical wind shear.  The moderate vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification.  The vertical wind shear is forecast to be a little less on Wednesday.  Tropical Storm Cristina could intensify slowly during the next 24 hours.

Tropical Storm Cristina will move around the western part of a high pressure system that is over the Northwestern Caribbean Sea.  The high pressure system will steer Cristina toward the northwest during the next 24 hours.  On its anticipated track, Tropical Storm Cristina will approach the coast of El Salvador on Wednesday evening.

Tropical Storm Cristina will bring strong winds and locally heavy rain to the coast of northwestern Nicaragua, the Pacific coast of Honduras, and the coast of El Salvador.  Heavy rain is likely to cause flash floods in some locations.

Elsewhere, Tropical Depression Boris continued to weaken as it move inland over southern Mexico.  At 11:00 a.m. EDT on Tuesday the center of Tropical Depression Boris was located at latitude 16.9°N and longitude 98.9°W which put the center about 65 miles (105 km) east of Acapulco, Mexico.  Boris was moving toward the northwest at 7 m.p.h. (11 km/h).  The maximum sustained wind speed was 30 m.p.h. (50 km/h) and there were wind gusts to 40 m.p.h. (65 km/h).  The minimum surface pressure was 1004 mb.

Tropical Storm Cristina Forms West of Nicaragua

Tropical Storm Cristina formed over the Eastern North Pacific Ocean west of Nicaragua on Monday afternoon.  At 2:00 p.m. EDT on Monday the center of Tropical Storm Cristina was located at latitude 11.7°N and longitude 87.7°W which put the center about 100 miles (160 km) west-southwest of Managua, Nicaragua.  Cristina was moving toward the north at 5 m.p.h. (8 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 1002 mb.

A Tropical Storm Warning is in effect for the portion of the coast from Puerto Sandino, Nicaragua to the border with Honduras.  A Tropical Storm Warning is in effect for the Pacific coast of Honduras.  A Tropical Storm Warning is in effect for the entire coast of El Salvador.

A low pressure system over the Eastern North Pacific Ocean west of Nicaragua strengthened on Monday afternoon and the U.S. National Hurricane Center designated the system as Tropical Storm Cristina.

The distribution of thunderstorms in Tropical Storm Cristina was asymmetrical because of vertical wind shear.  Thunderstorms were occurring in bands in the southern half of Cristina’s circulation.  Bands in the northern half of Tropical Storm Cristina consisted primarily of showers and lower clouds.  Storms near the center of Cristina generated upper level divergence that pumped mass away to the south and west of the tropical storm.  The removal of mass caused the surface pressure to decrease.

The circulation around Tropical Storm Cristina was relatively small.  Winds to tropical storm force extended out 90 miles (145 km) from the center of Cristina’s circulation.

Tropical Storm Cristina will move through an environment somewhat favorable for intensification during the next 24 hours.  Cristina will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the western side of an upper level low that is over the Southwestern Caribbean Sea.  The upper level low will produce northerly winds that will blow toward the top of Cristina’s circulation.  Those winds will cause moderate vertical wind shear.  The moderate vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification.  Tropical Storm Cristina could intensify slowly during the next 24 hours.

Tropical Storm Cristina will move around the western part of a high pressure system that is over the Northwestern Caribbean Sea.  The high pressure system will steer Cristina toward the north-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Cristina will move toward the coast of Honduras and El Salvador.

Tropical Storm Cristina will bring strong winds and locally heavy rain the coast of northwestern Nicaragua, the Pacific coast of Honduras, and the coast of El Salvador.  Heavy rain is likely to cause flash floods in some locations.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Boris strengthened a little south of Mexico.  At 2:00 p.m. EDT on Monday the center of Tropical Storm Boris was located at latitude 15.3°N and longitude 99.2°W which put the center about 120 miles (195 km) south-southeast of Acapulco, Mexico.   Boris was moving toward the east-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 1001 mb.

A Tropical Storm Warning is in effect for the portion of the coast from Laguna de Chacahua to Tecpan de Galeana, Mexico.  The Tropical Storm Warning includes Acapulco.

Tropical Storm Boris will bring strong winds and very heavy rain to parts of Guerrero and Oaxaca.  Heavy rain is likely to cause flash floods in some locations.

Depression Strengthens to Tropical Storm Boris

Former Tropical Depression Two-E strengthened to Tropical Storm Boris over the Eastern North Pacific Ocean southeast of Acapulco, Mexico early on Monday.  At 8:00 a.m. EDT on Monday the center of Tropical Storm Boris was located at latitude 15.9°N and longitude 99.2°W which put the center about 85 miles (135 km) southeast of Acapulco, Mexico.   Boris was moving toward the northeast at 2 m.p.h. (3 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 is in effect for the portion of the coast from Laguna de Chacahua to Tecpan de Galeana.  The Tropical Storm Warning includes Acapulco.

Former Tropical Depression Two-E strengthened early on Monday and the U.S. National Hurricane Center designated the system as Tropical Storm Boris.

More thunderstorms formed near the center of Tropical Storm Boris on Sunday night.  More thunderstorms were also developing in bands revolving around the center of Boris’ circulation.  Storms near the center of Boris generated upper level divergence that was pumping mass away to the west of the tropical storm.  The removal of mass caused the surface pressure to decrease slowly,

Although the circulation around Tropical Storm Boris was large, the strongest winds were occurring close to the center of circulation.  Winds to tropical storm force extended out 35 miles (55 km) from the center of Boris’ circulation.

Tropical Storm Boris will move through an environment somewhat favorable for intensification during the next few hours.  Boris will move over water where the Sea Surface Temperatures are near 31°C.  It will move under the southeastern part of an upper level ridge that is over Mexico.  The upper level ridge will produce easterly winds that will blow toward the top of Boris’ circulation.  Those winds will cause moderate vertical wind shear.  The moderate vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification.  Tropical Storm Boris could intensify during the next few hours.

Tropical Storm Boris around the southwestern side of a high pressure system that is over southeastern Mexico.  The high pressure system will steer Boris toward the north during the next 24 hours.  On its anticipated track, Tropical Storm Boris will make landfall on the coast of Mexico near Acapulco later on Monday.

Tropical Storm Boris will being strong winds and very heavy rain to parts of Guerrero and Oaxaca.  Heavy rain is likely to cause flash floods in some locations.

Tropical Depression Two-E Forms South of Acapulco

Tropical Depression Two-E formed over the Eastern North Pacific Ocean south of Acapulco, Mexico on Sunday.  At 2:00 p.m. EDT on Sunday the center of Tropical Depression Two-E was located at latitude 15.7°N and longitude 99.8°W which put the center about 85 miles (135 km) south of Acapulco, Mexico.  The tropical depression was moving toward the northeast at 6 m.p.h. (10 km/h).  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.

The government of Mexico issued a Tropical Storm Warning that is in effect for the portion of the coast from Laguna de Chacahua to Tecpan de Galeana.  The Tropical Storm Warning includes Acapulco.

A low pressure system over the Eastern North Pacific Ocean south of Acapulco strengthened on Sunday and the U.S. National Hurricane Center designated the system as Tropical Depression Two-E.

A few more thunderstorms were forming near the center of Tropical Depression Two-E on Sunday afternoon.  More thunderstorms were also developing in bands revolving around the center of the tropical depression.  Storms near the center of Tropical Depression Two-E started to generate upper level divergence that was pumping mass away to the west of the tropical depression.  The removal of mass was causing the surface pressure to decrease slowly,

Tropical Depression Two-E will move through an environment somewhat favorable for intensification during the next 18 hours.  The tropical depression will move over water where the Sea Surface Temperatures are near 31°C.  It will move under the southeastern part of an upper level ridge that is over Mexico.  The upper level ridge will produce easterly winds that will blow toward the top of the tropical depression.  Those winds will cause moderate vertical wind shear.  The moderate vertical wind shear will inhibit intensification, but the wind shear may not be enough to prevent intensification.  Tropical Depression Two-E could intensify to a tropical storm.

Tropical Depression Two-E around the western side of a high pressure system that is over southeastern Mexico.  The high pressure system will steer the tropical depression toward the north during the next 24 hours.  On its anticipated track, Tropical Depression Two-E will make landfall on the coast of Mexico east of Acapulco in less than 24 hours.

Tropical Depression Two-E could be a tropical storm at the time of landfall.  In any case, the tropical depression or tropical storm will being strong winds and heavy rain to Guerrero and Oaxaca.  Heavy rain is likely to cause flash floods in some locations.

Elsewhere over the Eastern North Pacific Ocean, Tropical Depression Amanda continued to weaken slowly far to the east-southeast of Hawaii.  At 11:00 a.m. EDT on Sunday the center of Tropical Depression Amanda was located at latitude 11.5°N and longitude 135.4°W which put the center about 1425 miles (2295 km) east-southeast of Hilo, Hawaii.  Amanda was moving toward the southwest at 5 m.p.h. (8 km/h).  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 1007 mb.

Tropical Storm Ivo Forms South of Mexico

Tropical Storm Ivo formed over the Eastern North Pacific Ocean on Wednesday afternoon.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Ivo was located at latitude 14.2°N and longitude 99.1°W which put the center about 195 miles (310 km) south-southeast Acapulco, Mexico.  Ivo was moving toward the west-northwest at 22 m.p.h. (35 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 1008 mb.

A low pressure system over the Eastern North Pacific Ocean south of Mexico strengthened on Wednesday afternoon and the U.S. National Hurricane Center designated the system as Tropical Storm Ivo.

The circulation around Tropical Storm Ivo organized quickly on Wednesday afternoon.  Thunderstorms developed near the center of Ivo’s circulation.  Thunderstorms also formed in bands revolving around the center of Tropical Storm Ivo.  Storms near the center of Ivo began to generate upper level divergence that pumped mass away from the tropical storm.

The circulation around Tropical Storm Ivo was small.  Winds to tropical storm force extended out 25 miles (40 km) in the northern side of Ivo’s circulation.  The winds in the southern side of Tropical Storm Ivo were blowing at less than tropical storm force.

Tropical Storm Ivo will move through an environment mostly favorable for intensification during the next 24 hours.  Ivo will move over water where the Sea Surface Temperatures are near 29°C.  It will move under the southern side of an upper level ridge over Mexico.  The upper level ridge will produce easterly winds that will blow toward the top of Ivo’s circulation.  However, the winds in the lower atmosphere will also blow from the east.  Since the winds in the upper and lower levels of the atmosphere will blow from the same direction, there will be less vertical wind shear.  Tropical Storm Ivo is likely to strengthen during the next 24 hours.

Tropical Storm Ivo will move around the southern side of a high pressure system that is over Mexico.  The high pressure system will steer Ivo toward the west-northwest during the next 24 hours.  On its anticipated track, Tropical Storm Ivo will move parallel to the coast of southern Mexico.

Bands in the northern side of Ivo’s circulation could drop heavy rain on parts of southern Mexico.  Heavy rain could cause flash floods in Guerrero, Michoacan, and Colima.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Henriette continued to churn toward the Central Pacific.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Henriette was located at latitude 18.1°N and longitude 131.3°W which put the center about 1555 miles (2505 km) east Hilo, Hawaii.  Henriette was moving toward the west at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 1005 mb.