Tag Archives: Kingston

Elsa Weakens South of Hispaniola

Former Hurricane Elsa weakened back to tropical storm intensity while it passed south of Hispaniola on Saturday. At 2:00 p.m. EDT on Saturday the center of Tropical Storm Elsa was located at latitude 17.3°N and longitude 73.0°W which put it about 255 miles (410 km) east of Kingston, Jamaica. Elsa was moving toward the west-northwest at 29 m.p.h. (46 km/h). The maximum sustained wind speed was 70 m.p.h. (110 km/h) and there were wind gusts to 85 m.p.h. (135 km/h). The minimum surface pressure was 1002 mb.

A Hurricane Warning was in effect for the portion of the coast from Port Au Prince, Haiti to the southern border with the Dominican Republic. Hurricane Watches were in effect for the Cuban provinces of Camaguey, Granma, Guantanamo, Holguin, Las Tunas and Santiago de Cuba. Tropical Storm Warnings were in effect for the portion of the coast from Port Au Prince to the northern border with the Dominican Republic and from Punta Palenque, Dominican Republic to the southern border with Haiti. Tropical Storm Warnings were also in effect for Jamaica and the Cuban provinces of Camaguey, Granma, Guantanamo, Holguin, Las Tunas, and Santiago de Cuba. A Tropical Storm Watch was in effect for the portion of the coast from Punta Palenque to Cabo Engano, Dominican Republic. Tropical Storm Watches were in effect for Cayman Brac, Little Cayman and the Cuban provinces of Ciego de Avila, Sancti Spiritus, Cienfuegos, Villa Clara and Matanzas.

Strong winds in the lower levels pushed the surface center of former Hurricane Elsa to the west of the center in the middle levels early on Saturday. The displacement between the two centers disrupted the vertical circulation of Elsa and it weakened back to tropical storm intensity. More thunderstorms started to develop east of the center of Tropical Storm Elsa on Saturday morning. Mountains in southwestern Haiti appeared to deflect the low level flow around the northern side of Elsa. More thunderstorms began forming to the north of the center of Tropical Storm Elsa on Saturday afternoon. A NOAA plane appeared to find that the surface pressure was decreasing again at the center of Elsa on Saturday afternoon. Winds to tropical storm force extended out 130 miles (210 km) from the center of circulation.

Tropical Storm Elsa will move through an environment somewhat favorable for intensification during the next 18 hours. Elsa will move over water where the Sea Surface Temperatures are near 28°C. The center of Tropical Storm Elsa will pass just south of Haiti and just north of Jamaica. Elsa will move more slowly during the next 24 hours. It will move into a region where the upper level winds are weak and there will be less vertical wind shear. Tropical Storm Elsa could intensify back to a hurricane on Saturday night.

Tropical Storm Elsa will move south of the subtropical high pressure system over the Atlantic Ocean during the next 18 hours. The high will continue to steer Tropical Storm Elsa toward the west-northwest, but Elsa is likely to more more slowly. An upper level trough over the eastern U.S. is forecast to weaken the high pressure system on Sunday. When the high weakens, then Tropical Storm Elsa will move more toward the northwest. On its anticipated track the center of Tropical Storm Elsa will pass just to the south of the southwestern coast of Haiti. The center of Tropical Storm Elsa could pass north of Jamaica and be near eastern Cuba by Sunday morning. Elsa could approach the Florida Keys on Monday. Elsa will cause gusty winds and locally heavy rain over parts of Haiti, Jamaica and Cuba.

Tropical Depression 29 Forms over the Central Caribbean Sea

Tropical Depression Twentynine formed over the central Caribbean Sea on Saturday afternoon. At 5:00 p.m. EDT on Saturday the center of Tropical Depression Twentynine was located at latitude 15.0°N and longitude 73.2°W which put it about 315 miles (510 km) southeast of Kingston, Jamaica. The depression was moving toward the west at 15 m.p.h. (24 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.

Visible satellite images strongly suggested that a low level center of circulation had developed in an area of thunderstorms over the central Caribbean Sea on Saturday afternoon and the National Hurricane Center designated the system as Tropical Depression Twentynine. The circulation around the depression exhibited more organization. Thunderstorms developed near the center of circulation. Bands of showers and thunderstorms formed and began to revolve around the center. Storms near the center started to generate upper level divergence which pumped mass away from the tropical depression.

Tropical Depression Twentynine will move through an environment favorable for intensification during the next 48 hours. The depression will move over water where the Sea Surface Temperature is near 29°C. It will be in a region where the upper level winds are weak and there will be little vertical wind shear. The depression could intensify into a tropical storm during the next 12 hours. It could strengthen into a hurricane within 48 hours.

Tropical Depression Twentynine will move south of a ridge of high pressure over the western Atlantic Ocean. The ridge will steer the depression toward the west during the next couple of days. On its anticipated path the depression could approach Nicaragua and Honduras in about 48 hours. It could be a hurricane when it gets there.