Saturday, August 18, 2007

Hurricane Dean Advisory Number 22

Atlantic Tropical Storm
Hurricane Dean Advisory Number 22

Issued at: 10:55 AM AST 8/18/07 (gateway).


Corrected maximum sustained winds paragraph,

Dean's fury threatens haiti, jamaica and the cayman islands, heavy squalls already approaching hispaniola,

At 11 am, 1500 utc, the government of jamaica has issued a hurricane warning for jamaica. A hurricane warning means that hurricane conditions are expected within the warning area within the next 24 hours. Preparations to protect life and property should be rushed to completion.

A hurricane warning remains in effect for the south coast of the dominican republic from barahona westward to the haiti-dominican republic border, and for the southwestern peninsula of haiti from the haiti-dominican republic border to port-au-prince.

A tropical storm warning remains in effect along the south coast of the dominican republic from cabo engano westward to barahona, and for coast of haiti north of port-au-prince to the northern haiti-dominican republic border. A tropical storm warning means that tropical storm conditions are expected within the warning area within the next 24 hours.

At 11 am, 1500 utc, the government of the cayman islands has issued a hurricane watch for the cayman islands. A hurricane watch means that hurricane conditions are possible within the watch area, generally within 36 hours.

A tropical storm watch is in effect for portions of cuba, from the province of camaguey eastward to the province of guantanamo. A tropical storm watch means that tropical storm conditions are possible within the watch area, generally within 36 hours.

At 11 am, 1500 utc, the tropical storm warning for the british virgin islands, u.s. Virgin islands and puerto rico has been discontinued.

Interests elsewhere in the central and western caribbean, including western cuba, the cayman islands, and the yucatan peninsula of mexico, should closely monitor the progress of dean.

For storm information specific to your area, please monitor products issued by your local weather office.

For storm information specific to your area, including possible inland watches and warnings, please monitor products issued by your local weather office.

At 1100 am ast, 1500z, the center of hurricane dean was located near latitude 15.7 north, longitude 68.6 west or about 565 miles, 910 km, east-southeast of kingston jamaica and about 210 miles, 340 km, south-southeast of santo domingo in the dominican republic.

Dean is moving toward the west-northwest near 17 mph, 28 km/hr. A track between the west and west-northwest is forecast during the next 24 hours. On this track the core of the hurricane will be moving south of hispaniola today and early Sunday.

Maximum sustained winds remain near 150 mph, 240 km/hr, with higher gusts. Dean is a category four hurricane on the saffir-simpson scale. Some fluctuations in intensity are likely during the next 24 hours.

Hurricane force winds extend outward up to 60 miles, 95 km, from the center, and tropical storm force winds extend outward up to 205 miles, 335 km.

Latest minimum central pressure reported by an air force hurricane hunter plane was 929 mb, 27.43 inches.

Storm total rainfall amounts of 5 to 10 inches can be expected over jamaica, with maximum amounts of up to 20 inches. Amounts of 2 to 3 inches can be expected over the dominican republic and haiti with amounts up to 6 inches possible. Additional rain accumulations of 1 to 2 inches are possible over puerto rico, with isolated storm total amounts of 5 inches. These rains could cause life- threatening flash floods and mudslides.

Repeating the 1100 am ast position, 15.7 n, 68.6 w. Movement toward, west-northwest near 17 mph. Maximum sustained winds, 150 mph. Minimum central pressure, 929 mb.

An intermediate advisory will be issued by the national hurricane center at 200 pm ast followed by the next complete advisory at 500 pm ast.


National Weather Service

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