Title: Tropical Cyclone ISAAC. USA, August 2012
Authors: PROBST PamelaFRANCHELLO GIOVANNIANNUNZIATO AlessandroDE GROEVE TomANDREDAKIS Ioannis
Publisher: Publications Office of the European Union
Publication Year: 2012
JRC N°: JRC77878
ISBN: 978-92-79-27983-6 (print)
978-92-79-27982-9 (pdf)
ISSN: 1018-5593 (print)
1831-9424 (online)
Other Identifiers: EUR 25657 EN
OPOCE LB-NA-25657-EN-C (print); LB-NA-25657-EN-N (online)
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC77878
DOI: 10.2788/72622
10.2788/72586
Type: EUR - Scientific and Technical Research Reports
Abstract: Tropical Cyclone ISAAC, after causing damage and deaths in Haiti, moved towards the coast of SE Louisiana (USA), where it made two landfalls. After the second landfall, it started moving inland in SE Louisiana, passing W of New Orleans on Aug 29 afternoon/evening (UTC), weakening into a tropical storm, then late on Aug 30 became a tropical depression. Tropical Cyclone ISAAC affected the southern parts of Louisiana, Mississippi and Alabama with heavy rainfall, strong winds and storm surge, causing flooding, power outages, damage to property and, according to media report, killing at least 7 people. Most of this damage has been caused by heavy rains and storm surge. The Joint Research Centre (JRC) followed the event through the information automatically collected and analysed in the Global Disasters Alerts and Coordination System (GDACS). GDACS classification, for TC ISAAC in the USA, was: Green for the wind impact, Orange for rain impact and Red for storm surge impact. On 27 August 2012, 2 days before the landfall, the JRC HyFlux2 storm surge model indicated a possible storm surge in the order of 2.5-3.5m for Aug 29 morning (UTC) in the coastal area E-SE of New Orleans, Louisiana Online observations and NOAA reports confirmed the forecasts. This report analyses and discusses the GDACS automatic impact assessments and compares the JRC HyFlux2 deterministic storm surge forecasts with the probabilistic forecasts provided by NOAA.
JRC Directorate:Space, Security and Migration

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