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Depression Strengthens to Tropical Storm Boris

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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

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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 Depression 13E Strengthens to Tropical Storm Lester, Mexico Issues Warning

Former Tropical Depression Thirteen-E strengthened to Tropical Storm Lester south of Mexico on Friday morning and the government of Mexico issued a Tropical Storm Warning for a portion of the coast. At 8:00 a.m. EDT on Friday the center of Tropical Storm Lester was located at latitude 13.4°N and longitude 96.1°W which put it about 160 miles (255 km) south of Puerto Angel, Mexico. Lester was moving toward the northwest at 5 m.p.h. (8 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 1005 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Punta Maldonado to Zihuatanejo, Mexico. The Tropical Storm Warning included Acapulco. A Tropical Storm Watch was in effect for the portion of the coast from Punta Maldonado to Laguna de Chacahua, Mexico. A Tropical Storm Watch was in effect from Zihuatanejo to Lazaro Cardenas, Mexico.

The circulation around former Tropical Depression Thirteen-E strengthened on Friday morning and the National Hurricane Center upgraded it to Tropical Storm Lester. Even though former Tropical Depression Thirteen-E strengthened to Tropical Storm Lester, the distribution of thunderstorms continued to be asymmetrical. Most of the thunderstorms were occurring in bands in the western half of Lester’s circulation. Bands in the eastern half of the circulation consisted primarily of showers and lower clouds. Storms near the center of circulation generated upper level divergence that pumped mass away to the west of the tropical storm. Winds to tropical storm force extended out 45 miles (75 km) in the southern half of Lester’s circulation. The winds in the northern half of the circulation were blowing at less than tropical storm force.

Tropical Storm Lester will move through an environment somewhat favorable for intensification during the next 36 hours. Lester will move over water where the Sea Surface Temperatures are near 30˚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 the tropical depression. Those winds will cause vertical wind shear and the wind shear will inhibit intensification. Tropical Storm Lester likely to strengthen gradually during the next 36 hours.

Tropical Storm Lester will move around the southwestern part of a high pressure system that extends over Mexico. The high pressure system will steer Lester toward the northwest during the next 36 hours. On its anticipated track Tropical Storm Lester will approach the southwest coast of Mexico on Saturday morning. Lester will bring gusty winds and locally heavy rain to Guerrero. Heavy rain could cause flash floods in some locations.

Tropical Depression Forms South of Mexico, Watch Issued

Tropical Depression Thirteen-E formed over the Eastern North Pacific Ocean south of Mexico on Thursday and the government of Mexico issued a Tropical Storm Watch for a portion of the coast. At 8:00 p.m. EDT on Thursday the center of Tropical Depression Thirteen-E was located at latitude 12.8°N and longitude 95.6°W which put it about 215 miles (345 km) south-southeast of Puerto Angel, Mexico. The tropical depression was moving toward the northwest at 3 m.p.h. (5 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.

A Tropical Storm Watch was in effect for the portion of the coast from Laguna de Chacahua to Zihuatanejo, Mexico. The Tropical Storm Watch includes Acapulco.

The circulation around a low pressure system over the Eastern North Pacific Ocean strengthened on Thursday and the National Hurricane Center designated the system as Tropical Depression Thirteen-E. Tropical Depression Thirteen-E had a well defined low level center of circulation but the distribution of thunderstorms was asymmetrical. Most of the thunderstorms were occurring in bands in the western half of the tropical depression. Bands in the eastern half of the circulation consisted primarily of showers and lower clouds. Storms near the center of circulation generated upper level divergence that pumped mass away to the west of the tropical depression.

Tropical Depression Thirteen-E will move through an environment somewhat favorable for intensification during the next 36 hours. The tropical depression will move over water where the Sea Surface Temperatures are near 30˚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 the tropical depression. Those winds will cause vertical wind shear and the wind shear will inhibit intensification. Tropical Depression Thirteen-E is likely to strengthen gradually during the next 36 hours.

Tropical Depression Thirteen-E will move around the southwestern part of a high pressure system that extends over Mexico. The high pressure system will steer the tropical depression toward the northwest during the next 36 hours. On its anticipated track Tropical Depression Thirteen-E will approach the southwest coast of Mexico on Saturday morning. It is likely to be a tropical storm when it approaches the coast.