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Learn more about severe weather from highlights of 2011’s storm chases and on-location storm videos from the Orbit production team.
17 January 2011. Presenter Helen Czerski and the team are in Oswego, Upstate New York to discover what triggers Lake Effect Snow. How is it different to regular snow?
3 February 2011. Stephen Kirk sent in his video of his walk up Ben Lawer in the southern part of the Scottish Highlands. Gust winds of up to 70mph where reported.
5 March 2011. Sea ice allows hunters to travel quickly over great distances to find seals - but it's not easy for the team to return home after their time with the Inuits.
Where do these massive whirlpools in the sky come from?
A scale known as the Enhanced F Scale is used to rate twisters in the US and some other countries.
24 May 2011. EF-4 tornado captured by Chaser George Kourounis.
22 May 2011. EF-5 tornado captured by TornadoVideos.net and Basehunter chasers.
What causes them? Helen Czerski explains in her video blog from Kerela, India.
5 July 2011. Haboob timelapse by Blaine Coury
18 August 2011. Near Phoenix - Captured by Craig Hough
May 2011. Footage captured on the island of Miyakojima, Japan by James Reynolds.
August 2011. First hurricane of the 2011 season
August 2011. Captured by James Reynolds on Okinawa prefecture, Japan
... in 4.5 minutes