Tag Archives: EP13

Tropical Depression Thirteen-E Strengthens to Tropical Storm Lane

Former Tropical Depression Thirteen-E strengthened to Tropical Storm Lane during Friday night.  At 5:00 a.m. EDT on Saturday the center of Tropical Storm Lane was located at latitude 11.1°N and longitude 129.5°W which put the center about 1525 miles (2455 km) west-southwest of the southern tip of Baja California.  Lane 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 1005 mb.

The circulation around formed Tropical Depression Thirteen-E strengthened during Friday night and the U.S. National Hurricane center designated the system as Tropical Storm Lane.  The distribution of thunderstorms in Tropical Storm Lane was asymmetrical.  The inner end of a band of thunderstorms wrapped around the northern side of the center of Lane’s circulation.  Bands in the southern side of Tropical Storm Lane consisted primarily of showers and lower clouds.  Storms near the center of Lane generated upper level divergence that pumped mass away to the east of the tropical storm.

The strongest winds in Tropical Storm Lane were occurring in the band of thunderstorms north of the center of circulation.  Winds to tropical storm force were occurring out to 45 miles (75 km) in the northern side of Lane’s circulation.  The winds in the southern side of Tropical Storm Lane were blowing at less than tropical storm force.

Tropical Storm Lane will move through an environment that will be only marginally favorable for intensification during the next 24 hours.  Lane will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the southeastern part of an upper trough east of Hawaii.  The upper level ridge will produce southwesterly winds that will blow toward the top of Lane’s circulation.  Those winds will cause the vertical wind shear to increase.  The wind shear will inhibit intensification, but Tropical Storm Lane could intensify a little more during the next 12 hours.  The upper level trough will cause the vertical wind shear to increase even more on Sunday, which will cause Lane to weaken

Tropical Storm Lane will move south of a high pressure system over the Eastern North Pacific Ocean.  The high pressure system will steer the Lane toward the west during the next 24 hours.  On its anticipated track, Tropical Storm Lane will move remain far from any land areas.

Tropical Depression Thirteen-E Forms Southwest of Baja California

Tropical Depression Thirteen-E formed over the Eastern North Pacific Ocean southwest of Baja California on Friday afternoon.  At 5:00 p.m. EDT on Friday the center of Tropical Depression Thirteen-E was located at latitude 11.2°N and longitude 128.4°W which put the center about 1460 miles (2350 km) west-southwest of the southern tip of Baja California.  The tropical depression was moving toward the west at 7 m.p.h. (11 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 1006 mb.

A low pressure system over the Eastern North Pacific Ocean southwest of Baja California strengthened on Saturday afternoon and the U.S. National Hurricane Center designated the system as Tropical Depression Thirteen-E.  More thunderstorms formed near the center of Tropical Depression Thirteen-E on Friday afternoon.  Other bands of showers and thunderstorms were revolving around the center of the tropical depression.  Storms near the center of circulation generated upper level divergence that pumped mass away from the tropical depression.

Tropical Depression Thirteen-E will move through an environment that will be somewhat favorable for intensification during the next 24 hours.  The tropical depression will move over water where the Sea Surface Temperatures are near 28°C.  It will move under the western part of an upper level ridge over the Eastern North Pacific Ocean.  The upper level ridge will produce easterly winds that will blow toward the top of the depression’s circulation.  Those winds will cause some vertical wind shear.  The wind shear will inhibit intensification, but the shear may not be enough to prevent intensification.  Tropical Depression Thirteen-E could intensify to a tropical storm during the next 24 hours.

Tropical Depression Thirteen-E will move south of a high pressure system over the Eastern North Pacific Ocean.  The high pressure system will steer the tropical depression toward the west during the next 24 hours.  On its anticipated track, Tropical Depression Thirteen-E will move farther away from Baja California.

Tropical Storm Kenneth Strengthens a Little

Tropical Storm Kenneth strengthened a little over the Eastern North Pacific Ocean southwest of Baja California on Wednesday. At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Kenneth was located at latitude 15.7°N and longitude 124.2°W which put it about 1055 miles (1700 km) west-southwest of the southern tip of Baja California. Kenneth was moving toward the west-northwest at 10 m.p.h. (16 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 1003 mb.

Tropical Storm Kenneth got a little stronger on Wednesday, but the distribution of thunderstorms around was still asymmetrical. The inner end of a rainband wrapped around the western side of the center of Kenneth’s circulation. Many of the thunderstorms were occurring in that rainband. Bands in the eastern half of Tropical Storm Kenneth consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 80 miles (130 km) in the northern side of Kenneth’s circulation. The winds in the southern part of the circulation were blowing at less than tropical storm force.

Tropical Storm Kenneth will move through an environment that will become unfavorable for intensification during the next 24 hours. Kenneth will move over water where the Sea Surface Temperatures are near 27°C. An upper level trough east of Hawaii will produce southwesterly winds that will blow toward the top of Kenneth’s circulation. Those winds will cause the vertical wind shear to increase. Tropical Storm Kenneth will start to weaken when the vertical wind shear increases.

Tropical Storm Kenneth will move around the southern side of a high pressure system over the Eastern North Pacific Ocean. The high pressure system will steer Kenneth toward the north-northwest during the next 24 hours. On its anticipated track, Tropical Storm Kenneth will stay far away from Baja California and Hawaii.

Tropical Storm Kenneth Forms Southwest of Baja California

Tropical Storm Kenneth formed over the Eastern North Pacific Ocean southwest of Baja California on Tuesday afternoon. At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Kenneth was located at latitude 15.1°N and longitude 121.0°W which put it about 900 miles (1450 km) southwest of the southern tip of Baja California. Kenneth was moving toward the west at 16 m.p.h. (26 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.

A low pressure system over the Eastern North Pacific Ocean southwest of Baja California strengthened on Tuesday afternoon and the U.S. National Hurricane Center designated the system as Tropical Storm Kenneth. The distribution of thunderstorms around Tropical Storm Kenneth was very asymmetrical. Most of the thunderstorms were occurring in a couple of bands in the northwestern part of Kenneth’s circulation. Bands in the other parts of the tropical storm consisted primarily of showers and lower clouds. Winds to tropical storm force were also occurring in the northwestern quadrant of Tropical Storm Kenneth. The winds in the other parts of Kenneth’s circulation were blowing at less than tropical storm force.

Tropical Storm Kenneth will move through an environment somewhat favorable for intensification during the next 24 hours. Kenneth will move over water where the Sea Surface Temperatures are near 27°C. It will move under the southern part of an upper level ridge over the Eastern North Pacific Ocean. The ridge will produce easterly winds that will blow toward the top of Kenneth’s circulation. Those winds will cause moderate vertical wind shear. The wind shear will inhibit intensification. Tropical Storm Kenneth could intensify on Wednesday, if the vertical wind shear is not too strong. An upper level trough east of Hawaii will produce southwesterly winds that will affect Kenneth later this week. The southwesterly winds will cause more vertical wind shear and the wind shear will cause Tropical Storm Kenneth to weaken.

Tropical Storm Kenneth will move around the southern side of a high pressure system over the Eastern North Pacific Ocean. The high pressure system will steer Kenneth toward the west-northwest during the next 24 hours. On its anticipated track, Tropical Storm Kenneth will move farther away from Baja California.

Tropical Depression Lester Brings Rain to Southern Mexico

Tropical Depression Lester brought rain to southern Mexico on Saturday afternoon. At 2:00 p.m. EDT on Saturday the center of Tropical Depression Lester was located at latitude 16.5°N and longitude 98.5°W which put it about 85 miles (135 km) east-southeast of Acapulco, Mexico. Lester was moving toward the north at 10 m.p.h. (16 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 1009 mb.

Former Tropical Storm Lester quickly weakened to a tropical depression after the center made landfall on the coast of Mexico east of Acapulco. The government of Mexico discontinued the tropical storm warnings and watches for the coast. Tropical Depression Lester is forecast to dissipate quickly as it moves farther inland over Mexico. Even though Lester will weaken quickly, bands in the eastern side of Lester’s circulation will drop locally heavy rain over parts of Guerrero and Oaxaca. Heavy rain could cause flash floods in some locations.

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.

Marty Weakens to a Tropical Depression

Former Tropical Storm Marty weakened to a tropical depression over the Eastern North Pacific Ocean. At 11:00 a.m. EDT on Tuesday the center of Tropical Depression Marty was located at latitude 20.6°N and longitude 118.1°W which put it about 550 miles (885 km) west-southwest of the southern tip of Baja California. Marty was moving toward the west at 12 m.p.h. (19 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 1006 mb.

Former Tropical Storm Marty weakened to a tropical depression on Tuesday morning when it moved over cooler water. Few, if any, thunderstorms were occurring in the circulation around Tropical Depression Marty. The low level circulation was symmetrical and well organized, but it consisted almost entirely of showers and low clouds.

Tropical Depression Marty will move through an environment unfavorable for intensification during the next several days. Marty will move over water where the Sea Surface Temperatures are near 25°C. The cool water will not supply enough energy to Marty for it to be able to strengthen.

Since the circulation of Tropical Depression Marty exists primarily in the lower levels, it will be steered by the winds near the surface. Marty will move south of the subtropical high pressure system over the Eastern North Pacific Ocean. The high will steer Marty toward the west during the next few days. On its anticipated track Tropical Depression Marty will move farther away from Mexico.

Tropical Storm Marty Develops South of Baja California

Tropical Storm Marty developed over the Eastern North Pacific Ocean south of Baja California on Monday morning. At 5:00 a.m. EDT on Monday the center of Tropical Storm Marty was located at latitude 20.0°N and longitude 111.0°W which put it about 210 miles (340 km) south-southwest of the southern tip of Baja California. Marty was moving toward the west at 15 m.p.h. (24 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 1000 mb.

The circulation of former Hurricane Grace developed into Tropical Storm Marty south of Baja California on Monday morning. Although the surface circulation of former Hurricane Grace dissipated when it moved across central Mexico during the weekend, the circulation in the middle and upper troposphere remained intact. New thunderstorms began to form when the middle and upper parts of the circulation moved over the Eastern North Pacific west of Mexico. Downdrafts in those thunderstorms transported momentum down to the surface and a low level circulation spun up. More thunderstorms formed near the low level center on Monday morning and the National Hurricane Center designated the system as Tropical Storm Marty.

The circulation around Tropical Storm Marty was well organized. Thunderstorms near the center of Marty were generating upper level divergence that was pumping mass away from the tropical storm. Bands of showers and thunderstorms were revolving around the center of Tropical Storm Marty. Winds to tropical storm force extended out 70 miles (110 km) from the center of Marty.

Tropical Storm Marty will move through an environment somewhat favorable for intensification during the next 24 hours. Marty will move over water where the Sea Surface Temperatures are near 27°C. It will move under the southern part of an upper level ridge centered near Baja California. The ridge will produce easterly winds that will blow toward the top of Marty’s circulation. Those winds will cause vertical wind shear. The wind shear will inhibit intensification, but it will not be strong enough to keep Tropical Storm Marty from getting stronger during the next 24 hours. Marty will move over cooler water on Tuesday and there will be less energy available to the tropical storm.

Tropical Storm Marty will move south of a subtropical high pressure system over the Eastern North Pacific Ocean. The high will steer Marty toward the west during the next several days. On its anticipated track Tropical Storm Marty will move farther away from Baja California.

Elsewhere, the circulation of former Hurricane Linda was approaching Hawaii. At 2:00 a.m. EDT on Monday the center of former Hurricane Linda was located at latitude 21.0°N and longitude 154.8°W which put it about 115 miles (185 km) east of Wailuku,, Hawaii. It was moving toward the west at 12 m.p.h. (19 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 1006 mb. The circulation of former Hurricane Linda will bring gusty winds and locally heavy rain to parts of Hawaii during the next several days.

Tropical Storms Hernan and Iselle Form West of Mexico

Tropical Storms Hernan and Iselle formed west of Mexico.  At 11:00 a.m. EDT on Thursday the center of Tropical Storm Hernan was located at latitude 19.1°N and longitude 106.2°W which put it about 95 miles (155 km) south-southwest of Cabo Corrientes, Mexico.  Hernan was moving toward the north-northwest 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 1001 mb.

The circulation around Tropical Storm Hernan was not well organized.  An upper level ridge over the southwestern U.S. and northern Mexico was producing northeasterly winds which were blowing toward the top of Hernan.  Those winds were causing strong vertical wind shear.  As a result of the shear, the stronger thunderstorms were occurring in bands in the southern part of the circulation.  Bands in the other parts of Tropical Storm Hernan consisted primarily of showers and lower clouds.  Winds to tropical storm force extended out 100 miles in the southern half of Hernan.  Winds in the northern half of the circulation were blowing at less than tropical storm force.

Tropical Storm Hernan will move through an environment unfavorable for intensification during the next several days.  Hernan will move over water where the Sea Surface Temperature is near 29°C.  So, there will be plenty of energy in the upper ocean to support intensification.  However, the upper level ridge will continue to cause strong vertical wind shear, which will inhibit potential intensification.  Tropical Storm Hernan is likely to weaken on Friday when it moves over colder water.  Hernan could approach the southern end of Baja California on Friday.

At 11:00 a.m. EDT on Thursday the center of Tropical Storm Iselle was located at latitude 17.0°N and longitude 115.8°W which put it about 560 miles (900 km) southwest of the southern tip of Baja California.  Iselles was moving toward the northeast 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 1001 mb.

The circulation around Tropical Storm Iselle was also not well organized.  It was being sheared by the same upper level ridge that was causing strong vertical wind shear over Tropical Storm Hernan.  Most of the thunderstorms in Iselle were also occurring in the southern half of the circulation.  Tropical storm force winds extended out 100 miles from the center in the southern half of Tropical Storm Iselle.  Iselle will also move through an environment unfavorable for intensification.