It nearly cloud and/or always starts as a circulating funnel cloud
and may debris/dust at the be accompanied by a ground.
A funnel cloud
becomes a fully fledged tornado when it touches the floor, and Mr Jackson explained they are more common in the UK than people might think.
- tornadoes that do not touch the ground - had already swept across Scotland's Isle of Lewis and Co Londonderry in Northern Ireland.
A Met Office spokesman said it had actually been a funnel cloud
, which is effectively a tornado which does not touch the ground.
The only way at this time to identify that the funnel cloud
has touched down is by someone seeing it, and then reporting it before they run like a greyhound for the next county.
A few miles away, extending down from a black cloud bank, a funnel cloud
twisted and writhed menacingly, like some sinister living thing.
The funnel cloud
was spotted in the evening rush hour on Thursday.
The funnel cloud
did not originate, it simply appeared among the other elements, advancing like a torpedo.
I was twelve and I rode on the back of a big boy's bicycle flat into a funnel cloud
that picked us up and threw us clean into the ditch.
If you're anywhere beneath this whirling piece of meteorological give and take -- a funnel cloud
-- you are in a bad, dangerous place known to stormchasers as `the bear cage'.
A cold-air funnel is another generally weak tornado or funnel cloud
, which has yet another means of production--relatively cool, comparatively stable conditions.
Tornadoes give distinct warning signs, including powerful thunderstorms producing haft, still air with little wind, a cloud of debris, a greenish sky with a possible funnel cloud
extending from the clouds, and a loud roar similar to a freight train.