What causes hurricanes? What happens when 2 tropical cyclones collide?

Hurricane Matthew and newly formed hurricane Nicole, October 6, 2016. Image source: NASA / Earth Observatory
What happens when 2 tropical cyclones collide? When the Atlantic becomes crowded with tropical storms and hurricanes, they can sometimes run into one another. It’s a phenomenon known as the Fujiwhara Effect, named for the meteorologist who first described it. The Fujiwara effect, KHSB


Every year, coastal regions brace themselves for violent windstorms known as hurricanes. But how do these storms form and grow?..

Read Full Article, National Geographic (10-06-2016)

Matthew strengthens to Category 4 hurricane, CBS News (10-06-2016)
Hurricane Matthew has strengthened to a catastrophic Category 4 storm as it barrels toward the heavily populated coast of Florida. The biggest threat Matthew poses may be storm surge…

NHC says Nicole strengthens into hurricane south of Bermuda; Reuters (10-06-2016)

Hurricane Nicole forms east of Hurricane Matthew; TCPalm (10-06-2016)

Half of Weather Disasters Linked to Climate Change; National Geographic (11-07-2015)
Human-caused changes in climate played a role in 14 of 28 storms, droughts, and other 2014 extreme weather events investigated by global scientists…

New report finds human-caused climate change increased the severity of many extreme events in 2014, NOAA (11-05-2015)
Human activities, such as greenhouse gas emissions and land use, influenced specific extreme weather and climate events in 2014, including tropical cyclones in the central Pacific, heavy rainfall in Europe, drought in East Africa, and stifling heat waves in Australia, Asia, and South America, according to a new report. The report, “Explaining Extreme Events of 2014 from a Climate Perspective” published by the Bulletin of the American Meteorological Society, addresses the natural and human causes of individual extreme events from around the world in 2014, including Antarctica…

Rare Double Cyclones Sock Australia—Where Else Has This Happened? National Geographic (02-25-2015)
Although a first for the country, double cyclones or hurricanes are not unheard of in other parts of the world. Scientists predict that climate change will reduce the overall number of tropical cyclones, but the most severe storms, category 3 or higher on the Saffir-Simpson scale, will become more common…

Rare Cyclone Heads for Arabia; NASA Earth Observatory (10-31-2015)
Citizens of the arid Arabian Peninsula were bracing for strong winds, a storm surge, and extreme rainfall as Category 4 Cyclone Chapala was forecast to make landfall in Yemen. Only two tropical cyclones have hit the Peninsula since reliable records started in 1979, and Chapala has the potential to be the strongest of them all…

New Report Finds Human-Caused Climate Change Increased Severity Of 2013 Weather Events In Asia, Europe And Australia; NOAA (09-29-2014)

8 Charts That Show How Climate Change Is Making The World More Dangerous; Guardian UK (07-14-2014)
According to a report from the World Meteorological Organisation, natural disasters are occurring nearly five times as often as they were in the 1970s. But some disasters, such as floods and storms, pose a bigger threat than others…