Tropical Storm Grace Brings Wind and Rain to Cayman Islands

Tropical Storm Grace brought wind and rain to the Cayman Islands on Wednesday morning. At 8:00 a.m. EDT on Wednuesday the center of Tropical Storm Grace was located at latitude 19.1°N and longitude 81.4°W which put it about 20 miles (30 km) southwest of Grand Cayman. Grace was moving toward the west-northwest at 16 m.p.h. (26 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 993 mb.

A Hurricane Warning was in effect for the portion of the coast from Cancun to Punta Herrero, Mexico. The Hurricane Warning included Cozumel. A Hurricane Watch was in effect for the Cayman Islands. A Tropical Storm Warning was in effect for the Cayman Islands. Tropical Storm Warnings were in effect for the portions of the coast from Cancun to Campeche, Mexico and from Punta Herrero to Puerto Costa Maya, Mexico. Tropical Storm Watches were in effect for the Cuban provinces of Isla de la Juventud and Pinar del Rio.

Tropical Storm Grace was getting better organized on Wednesday morning. A reconnaissance plane was reporting that an eye with a diameter of 18 miles (29 km) was forming at the center of Grace. The developing eye was surround by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the center of Tropical Storm Grace. Storms near the center of circulation were generating upper level divergence that was pumping mass away from the tropical storm. The removal of mass was causing the surface pressure to decrease. Winds to tropical storm force extended out 115 miles (185 km) from the center of Grace.

Tropical Storm Grace will move through an environment favorable for intensification during the next 18 hours. Grace 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 centered near Florida. The ridge will produce easterly winds that will blow toward the top of Grace’s circulation. Those winds will cause some vertical wind shear, but the shear will be too small to prevent intensification. Tropical Storm Grace is likely to strengthen to a hurricane over the northwestern Caribbean Sea. A period of rapid intensification could occur once an inner core with an eye and an eyewall forms at the center of Grace.

Tropical Storm Grace will move south of a subtropical high pressure system over the Atlantic Ocean. The high will steer Grace toward the west-northwest during the next several days. On its anticipated track Tropical Storm Grace will approach the Yucatan Peninsula on Wednesday night. Grace will be a hurricane when it approaches the Yucatan. It will bring strong winds and locally heavy rain. Flash flooding is likely to occur in some locations. Grace will also cause a storm surge along the east coast of the Yucatan Peninsula.

Elsewhere, Tropical Depression Fred was dropping heavy rain over parts of the northeastern U.S. and Tropical Storm Henri was passing south of Bermuda.

At 5:00 a.m. EDT on Wednesday the center of Tropical Depression Fred was located at latitude 38.6°N and longitude 81.8°W which put it about 20 miles (30 km) northwest of Charleston, West Virginia. Fred was moving toward the northeast at 20 m.p.h. (32 km/h). The maximum sustained wind speed was 25 m.p.h. (40 km/h) and there were wind gusts to 35 m.p.h. (55 km/h). The minimum surface pressure was 1011 mb. Flood Watches and Flash Flood Watches were in effect for parts of the eastern U.S.

At 8:00 p.m. EDT on Wednesday the center of Tropical Storm Henri was located at latitude 30.1°N and longitude 65.7°W which put it about 160 miles (260 km) south-southwest of Bermuda. Henri was moving toward the west at 6 m.p.h. (10 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 9980 mb. A Tropical Storm Watch was in effect for Bermuda.