Very intense tropical cyclone Indlala*
14 Mar 2007 22:08:00 GMT
Source: Tropical Storm Risk
Mark Saunders
Very intense tropical cyclone Indlala is forecast to strike Madagascar
at about 00:00 GMT on 15 March. Data supplied by the US Navy and Air
Force Joint Typhoon Warning Center suggest that the point of landfall
will be near 15.0 S, 50.8 E. Indlala is expected to bring 1-minute
maximum sustained winds to the region of around 231 km/h (143 mph). Wind
gusts in the area may be considerably higher.
According to the Saffir-Simpson damage scale the potential property
damage and flooding from a storm of Indlala's strength (category 4) at
landfall includes:
* Storm surge generally 4.0-5.5 metres (13-18 feet) above normal.
* Curtainwall failures with some complete roof structure failures on
small residences.
* Shrubs, trees, and all signs are blown down.
* Complete destruction of mobile homes.
* Extensive damage to doors and windows.
* Low-lying escape routes may be cut by rising water 3-5 hours
before arrival of the centre of the storm.
* Major damage to lower floors of structures near the shore.
* Terrain lower than 3 metres (10 feet) above sea level may be
flooded requiring massive evacuation of residential areas as far inland
as 10 km (6 miles).
There is also the potential for flooding further inland due to heavy rain.
The information above is provided for guidance only and should not be
used to make life or death decisions or decisions relating to property.
Anyone in the region who is concerned for their personal safety or
property should contact their official national weather agency or
warning centre for advice.
This alert is provided by Tropical Storm Risk (TSR) which is sponsored
by Benfield, Royal & SunAlliance, Crawford & Company and University
College London (UCL). TSR acknowledges the support of the UK Met Office.