Tag Archives: Tropical Storm Lisa

Tropical Storm Lisa Strengthens, Hurricane Warning Issued for Belize

Tropical Storm Lisa strengthened over the Northwest Caribbean Sea northeast of Honduras on Tuesday afternoon and a Hurricane Warning was issued for the entire coast of Belize. At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Lisa was located at latitude 16.7°N and longitude 83.3°W which put it about 330 miles (530 km) east of Belize City, Belize. Lisa was moving toward the west at 15 m.p.h. (24 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 1000 mb.

Hurricane Warnings were in effect for Belize and the Bay Islands, Honduras. A Hurricane Watch was in effect for the portion of the coast from Chetumal to Puerto Costa Maya, Mexico. Tropical Storm Warnings were in effect for the entire North Coast of Honduras, the coast of Guatemala, and the portion of the coast from Chetumal to Punta Herrero, Mexico.

Tropical Storm Lisa strengthened on Tuesday. The inner end of a rainband wrapped around the center of Lisa’s circulation. Other bands of showers and thunderstorms were revolving around the core of Tropical Storm Lisa. Storms near the core generated upper level divergence that pumped mass away from the tropical storm. The circulation around Tropical Storm Lisa was small. Winds to tropical storm force extended out 70 miles (110 km) from the center of circulation.

Tropical Storm Lisa will move through an environment favorable for intensification during the next 24 hours. Lisa will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the axis of an upper level ridge over the Caribbean Sea. The upper level winds are weak near the axis of the ridge and there will be little vertical wind shear. Tropical Storm Lisa is likely to strengthen to a hurricane during the next 12 hours. Lisa could intensify more rapidly after an inner core with an eye and an eyewall forms.

Tropical Storm Lisa will move south of a high pressure system over the Gulf of Mexico. The high pressure system will steer Lisa toward the west during the next 36 hours. On its anticipated track, the center of Tropical Storm Lisa will be north of Honduras on Tuesday night. Lisa will approach Belize on Wednesday afternoon. Tropical Storm Lisa will be a hurricane when it approaches Belize. Tropical Storm Lisa could bring gusty winds and locally heavy rain to the north coast of Honduras. Lisa will bring strong winds and heavy rain to Belize. Heavy rain could cause flash floods in some locations. Lisa will also cause a storm surge along the coast of Belize.

Elsewhere over the Atlantic Ocean, Tropical Storm Martin developed east-northeast of Bermuda. At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Martin was located at latitude 35.4°N and longitude 54.5°W which put it about 630 miles (1010 km) east-northeast of Bermuda. Martin was moving toward the east at 15 m.p.h. (24 km/h). 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 991 mb.

Tropical Storm Lisa Develops South of Jamaica

Tropical Storm Lisa developed over the Caribbean Sea south of Jamaica on Monday morning. At 11:00 a.m. EDT on Monday the center of Tropical Storm Lisa was located at latitude 15.5°N and longitude 77.3°W which put it about 175 miles (285 km) south of Kingston, Jamaica. It was moving toward the west at 14 m.p.h. (22 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 was in effect for Jamaica.

The National Hurricane Center designated former Potential Tropical Cyclone Fifteen as Tropical Storm Lisa on Monday morning. The distribution of thunderstorms in Tropical Storm Lisa was still asymmetrical. Thunderstorms were occurring in bands in the eastern side of Lisa’s circulation. Bands in the western side of Tropical Storm Lisa consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 100 miles (160 km) in the eastern side of Lisa. The winds in the western side of the circulation were blowing at less than tropical storm force.

Tropical Storm Lisa will move through an environment favorable for intensification during the next 36 hours. Lisa will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the western part of an upper level ridge over the Caribbean Sea. The upper level ridge will produce southwesterly winds that will blow toward the top of Lisa’s circulation. Those winds will cause some vertical wind shear, but the wind shear will not be enough to prevent intensification. Tropical Storm Lisa is likely to strengthen gradually during the next 36 hours.

Tropical Storm Lisa will move south of a high pressure system over the western Atlantic Ocean. The high pressure system will steer Potential Tropical Cyclone Fifteen toward the west during the next 36 hours. On its anticipated track, the center of Tropical Storm Lisa could be north of Honduras by Tuesday night. Lisa could approach Belize on Wednesday afternoon. Tropical Storm Lisa could be a hurricane when it approaches Belize.

Tropical Storm Lisa Develops West of the Cape Verde Islands

Tropical Depression Thirteen intensified into Tropical Storm Lisa west of the Cape Verde Islands on Tuesday.  At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Lisa was located at latitude 16.4°N and longitude 31.0°W which put it about 465 miles (750 km) west of the Cape Verde Islands.  Lisa was moving toward the northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 45 m.p.h. (70 km/h) and there were wind gusts to 60 m.p.h. (95 km/h).  The minimum surface pressure was 1004 mb.

The degree of organization of the circulation of Tropical Storm Lisa depends on the level of the atmosphere.  The low level circulation is not well organized.  There is a broad center of circulation, but it does not have a tight core of thunderstorms.  Most of the thunderstorms are east of the center of circulation.  There are also several fragmented rainbands in the eastern half of the circulation.  There are only lower clouds and a few showers in the western half of the circulation.  However, the circulation is more well organized in the upper levels.  The thunderstorms in the eastern half of the circulation are generating upper level divergence which is pumping out mass toward the northeast and toward the northwest.  It appears that the circulation could be tilted toward the northeast with height.

The environment around Tropical Storm Lisa is marginal for intensification.  Lisa is moving over water where the Sea Surface Temperature (SST) is near 28°C.  However, an upper level trough north of Lisa is producing southwesterly winds which are blowing across the tropical storm.  The winds are causing moderate vertical wind shear, which probably contributed to the asymmetrical distribution of thunderstorms.  Tropical Storm Lisa could intensify somewhat on Wednesday, if the upper level winds diminish.  When Lisa moves farther north later this week, it will move over cooler SSTs and into a region where the upper level winds are stronger.  Less energy in the upper ocean and more vertical wind shear will cause Tropical Storm Lisa to weaken later this week.

Tropical Storm Lisa is moving northwest toward a section of the subtropical ridge which is weaker.  Lisa is expected to continue to move in that general direction for the next several days.  Tropical Storm Lisa will move farther into the middle of the Atlantic Ocean and it will not threaten any land areas this week.