Preliminary Event Briefing - Tropical Cyclone Irma - Wind and Storm Surge - Haiti and the Turks and Caicos Islands - September 10, 2017


Irma, now recognized as the most powerful Atlantic Ocean hurricane in recorded history, formed as a tropical storm on 30 August at 15UTC, west of the Cape Verde Islands and it was upgraded to hurricane status on 31 August at 15UTC. Irma intensified moving across the Atlantic Ocean, reaching the Leeward Islands as a major hurricane (category 5) on 6 September at approximately 12UTC. Antigua and Barbuda, Anguilla and St. Kitts and Nevis experienced hurricane-force winds and storm surge up to 2.2 m. In the following hours, Irma moved towards the west-northwest, affecting the British Virgin Islands, Puerto Rico, Dominican Republic, Haiti, Turks and Caicos Islands and Cuba. At the time of writing of this report, Irma is forecasted to affect The Bahamas, and the states of Florida, Georgia and South Carolina in the United States, before finally dissipating.

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