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Showing posts with label cyclone. Show all posts
Showing posts with label cyclone. Show all posts

Wednesday, September 28, 2016

Cyclone rips through South Australia-loses power.





Sunday, November 04, 2012

Cyclones, Hurricanes Occurring More Frequently



New post on The Extinction Protocol: 2012 and beyond

Tropical cyclones are occurring more frequently than before

by The Extinction Protocol
October 18, 2012 – CLIMATE - Are there more tropical cyclones now than in the past? - or is it just something we believe because we now hear more about them through media coverage and are better able detect them with satellites? New research from the Niels Bohr Institute clearly shows that there is an increasing tendency for cyclones when the climate is warmer, as it has been in recent years. The results are published in the scientific journal PNAS. How can you examine the frequency of tropical cyclones throughout history when they have not been systematically registered? Today cyclones are monitored from satellites and you can follow their progress and direction very accurately. But it is only the last approx. 40 years that we have been able to do this. Previously, they used observations from ships and aircraft, but these were not systematic measurements. In order to get a long-term view of the frequency of cyclones, it is necessary to go further back in time and use a uniform reference. Climate scientist Aslak Grinsted of the Centre for Ice and Climate at the Niels Bohr Institute at the University of Copenhagen therefore wanted to find some instruments that have stood and registered measurements continuously over a long period of time. “Tropical cyclones typically form out in the Atlantic Ocean and move towards the U.S. East Coast and the Gulf of Mexico. I found that there were monitoring stations along the Eastern Seaboard of the United States where they had recorded the daily tide levels all the way back to 1923. I have looked at every time there was a rapid change in sea level and I could see that there was a close correlation between sudden changes in sea level and historical accounts of tropical storms,” explains Aslak Grinsted. Aslak Grinsted now had a tool to create statistics on the frequency of cyclones that make landfall - all the way back to 1923. He could see that there has been an increasing trend in the number of major storm surges since 1923. –Terra Daily
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Wednesday, February 02, 2011

Most Powerful Cyclone in Australia's History Threatening



Australians flee, jam shelters ahead of "catastrophic cyclone"

Weather satellite image of tropical cyclone Yasi
Reuters – A weather satellite image, courtesy of the Japan Meteorological Agency, shows tropical cyclone Yasi 
CAIRNS, Australia (Reuters) – 

Thousands of  residents fled their homes and crammed into shelters in northeastern Australia as a cyclone described as the most powerful in the country's history and with a 650 km (400 mile) wide front barreled toward the coastline on Wednesday.
"We are facing a storm of catastrophic proportions," Queensland state premier Anna Bligh said after Cyclone Yasi was upgraded to a maximum-strength category five storm.
It is expected to hit the coast on Wednesday evening, packing winds in excess of 280 km (175 miles) per hour. The weather bureau predicted it would be the strongest ever to hit Australia, Sky TV reported.
"All aspects of this cyclone are going to be terrifying and potentially very very damaging," Bligh added, noting the greatest threat to life could come from storm surges along the coast with the system due to hit when the tide is high.
Mines, rail lines and coal ports have all shut down, with officials warning the storm could drive inland for hundreds of kilometers, hitting rural and mining areas still struggling to recover after months of devastating floods.
Outside a shuttered night market in the tourist city of Cairns, nervous backpackers tried to flag down cars and reach temporary evacuation centers at a nearby university.
"We are terrified. We have had almost no information and have never seen storms like this," said Marlim Flagar, 20, from Sweden.
At a sprawling shopping center on the outskirts of Cairns, hundreds of people streamed into a makeshift shelter, carrying backpacks, blankets and food.
"We've bought tinned food and cucumbers. That's all we could find this morning," said Natalie Zerbach, on holiday from Germany.
The cyclone is 650 km off the coast of northeastern Australia and is expected to make landfall at 10 pm (7 a.m. EST) on the Queensland coast between Cairns and Innisfail. Its strength is on a par with Hurricane Katrina, which devastated New Orleans in 2005.
More than 400,000 people live in the cyclone's expected path, which includes the cities of Cairns, Townsville and Mackay. The entire stretch is popular with tourists and includes Australia's Great Barrier Reef.
The weather was overcast with winds picking up in Cairns early on Wednesday. The main streets were largely deserted. Shops were closed and windows taped to stop shards of flying glass.
At a coffee shop on the Cairns waterfront, Scott Warren covered windows with black plastic sheeting and sandbags from a pickup truck, trying to work out how high he would need to build the barrier to escape a possible storm surge of seawater.
"We get a heap of cyclones every year, but this one has got everyone's attention," Warren said. "We're hoping for the best, but expecting the worst to be honest."
An updated cyclone warning from Queensland disaster officials said: "Severe tropical cyclone Yasi is a large and very powerful tropical cyclone that poses an extremely serious threat to life and property. This impact is likely to be more life threatening than any experienced during recent generations."
On Tuesday the military began evacuating nearly 40,000 people from low-lying coastal areas, with the high winds expected to create a storm surge of 5 meters, which could carry water far inland.
At Cairns airport, people queued from dawn to catch the last flights out of the city before the terminal was locked down and sandbagged against potential storm surges.
"We're so relieved to be on," said Paul Davis, from Sydney, as he stood in the line with his partner Sylvia Leveridge and 3 year-old daughter Ella.
Queensland, which accounts for about a fifth of Australia's economy and 90 percent of steelmaking coal exports worth about $20 billion a year, has had a cruel summer, with floods sweeping the eastern seaboard in recent months, killing 35 people.
(Writing by Ed Davies, Editing by Dean Yates)


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