Status:Ongoing analysis Material Status: Finalised Material from: Linus, Fernando
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Discussed in the following Daily reports: |
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1. Impact
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Tropical cyclone Irma hit several countries along its swath in the Caribbean. On 5-6 September TC Irma made its first landfall on some of the Leeward Islands. The first to be hit was Barbuda as a Category 5 cyclone and later on 6 September on St. Barthélemy, Saint Martin/Sint Marteen and Anguilla. All these islands were within the eyewall of the cyclone and wind gusts up to 70 m/s was reported on Barbuda. The cyclone later hit Virgin Islands, Turks and Caicos Islands and also affected Puerto Rico and Hispaniola. On 8 September the cyclone hit the Bahamas and made landfall on Cuba 8-9 September, also here as a category 5 cyclone. Finally the cyclone made landfall on the southern tip of Florida on 10 September |
2. Description of the event
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4. Experience from general performance/other cases
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5. Good and bad aspects of the forecasts for the event
Gust forecasts for western Florida at short range were far too high. This was not due to an excessive contribution from the convection-related gust contribution. This very curious finding is subject to further investigation at ECMWF.