Tornadoes occur when warm and cool air streams collide resulting in the formation of low pressure storm clouds. These clouds rotate and form a funnel of spiralling wind which can, in a small minority of cases, reach speeds of 300 mph. Tornadoes develop over land whereas hurricanes only form at sea. Both have an "eye" in the middle with winds swirling around this centre. (Source: EnglishClubDOTcom)
Here in the Philippines, the latest tornado was seen in St. Bernard, Southern Leyte when the storm Gener was still in the area. Several fishing boats went missing after that. Hope fishermen didn't got hurt by the incident. On the local news, while the tornado was announcing his fury, seen nearby was an airplane trying to land in Cebu Airport. Frightening...I can sense the turbulence inside the aircraft. Here's another shot taken by gauloises2008.