Tropical cyclones cause millions of dollars in damages every year in Australia. Characterised by violent winds, heavy rain and a spiraling shape cyclones can last between 2 to 6 days and are caused by a low pressure area in the atmosphere.
Australian Cyclone season starts on November first and ends on the 30th of April, according to the Australian Bureau of Meteorology Australia experiences around 11 tropical cyclones each cyclone season with an average of 4 tropical cyclones crossing the coast, though the impacts of the cyclone can still be felt on the coastal regions, even when a cyclone remains well off shore. This year meteorologists are expecting an average or near average amount of cyclones.
On February 3 2011 Cyclone Yasi struck Northern QLD, causing servere damage to affected areas with the worst affect areas being around Tully, Tully Heads, Silkwood, Mission Beach Innisfail and Cardwell.
It is estimated the Yasi caused $3.5 billion damage with $2 billion damage done to the agricultural industry and another $1 billion lost in the tourism industry, and left an estimated 170 000 homes and businesses without power, some of those people being left without power for up to a month. Click here to learn how Baintech’s Black Out Buster can ensure you’re not caught out during a cyclone.
Tropical Cyclone Category System
Cyclone intensity is defined by the maximum wind speed of a cyclone over flat land or open water, with the wind strength varying with distance from the cyclone eye.
|CATEGORY 1 Tropical Cyclone|
|Other Damage:||Damage to some crops, trees and caravans, Craft may drag moorings.|
|Risk of Power Failure:||Negligible|
|Strongest Winds:||GALES (typical gusts of 90 – 125 km/h)|
|CATEGORY 2 Tropical Cyclone|
|Other Damage:||Significant damage to signs, trees and caravans. Heavy damage to some crops|
|Risk of Power Failure:||Slight|
|Strongest Winds:||DESTRUCTIVE (typical gusts of 125 – 164 km/h)|
|CATEGORY 3 Severe Tropical Cyclone|
|Building Damage:||Some roof and structural damage|
|Other Damage:||Some caravans destroyed.|
|Risk of Power Failure:||Likley|
|Strongest Winds:||VERY DESTRUCTIVE (typical gusts of 165 – 224 km/h)|
|CATEGORY 4 Severe Tropical Cyclone|
|Building Damage:||Significant roofing loss and structural damage.|
|Other Damage:||Many caravans destroyed and blown away. Dangerous airborne debris.|
|Risk of Power Failure:||Almost certain widespread power failure|
|Strongest Winds:||VERY DESTRUCTIVE (typical gusts of 225 – 279 km/h)|
|CATEGORY 5 Severe Tropical Cyclone|
|Building Damage:||Widespread destruction|
|Risk of Power Failure:||Certain widespread power failure|
|Strongest Winds:||VERY DESTRUCTIVE (typical gusts more than 280 km/h)|
Three ways to prepare your business for cyclone season
sources: Australian Bureau of Meteorology, Wikipedia