The 2006 London tornado was a significant United Kingdom

tornado A tornado is a violently rotating column of air that is in contact with the surface of Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. It is often referred to as a twister, whirlwind or cyclone, although the ...

spawned from a

squall line A squall line, or quasi-linear convective system (QLCS), is a line of thunderstorms, often forming along or ahead of a cold front. In the early 20th century, the term was used as a synonym for cold front (which often are accompanied by abrupt a ...

moving over the city on 7 December 2006 at approximately 11:02 GMT. Its intensity is estimated to have been T5 on the

TORRO scale The TORRO tornado intensity scale (or T-Scale) is a scale measuring tornado intensity between T0 and T11. It was proposed by Terence Meaden of the Tornado and Storm Research Organisation (TORRO), a meteorological organisation in the United Kingdo ...

, equating to F2 on the

Fujita scale The Fujita scale (F-Scale; ), or Fujita–Pearson scale (FPP scale), is a scale for rating tornado intensity, based primarily on the damage tornadoes inflict on human-built structures and vegetation. The official Fujita scale category is determ ...

Meteorological synopsis

On the morning of 7 December, the UK was under the influence of a strong

Atlantic Ocean The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth#Surface, Earth's surface and about 24% of its water surface area. During the ...

low pressure system In meteorology, a low-pressure area (LPA), low area or low is a region where the atmospheric pressure is lower than that of surrounding locations. It is the opposite of a high-pressure area. Low-pressure areas are commonly associated with inclem ...

, which was named ''Ulrike'', bringing unstable weather conditions to much of the UK, and the south in particular. At approximately 07:30 GMT, a small band of

thunderstorm A thunderstorm, also known as an electrical storm or a lightning storm, is a storm characterized by the presence of lightning and its acoustics, acoustic effect on the Earth's atmosphere, known as thunder. Relatively weak thunderstorm ...

s initialised over

Cornwall Cornwall (; or ) is a Ceremonial counties of England, ceremonial county in South West England. It is also one of the Celtic nations and the homeland of the Cornish people. The county is bordered by the Atlantic Ocean to the north and west, ...

moving east-northeast across the country. By approximately 10:00 am, the squall line had reached

Salisbury Salisbury ( , ) is a city status in the United Kingdom, cathedral city and civil parish in Wiltshire, England with a population of 41,820, at the confluence of the rivers River Avon, Hampshire, Avon, River Nadder, Nadder and River Bourne, Wi ...

, where a drop in

humidity Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. Humidity indicates the likelihood for precipitation (meteorology), precipitation, dew, or fog t ...

was recorded, which may have resulted in an increase of

atmospheric pressure Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as , which is equivalent to 1,013. ...

behind the squall, causing it to accelerate forward. This increased motion in combination with a change in wind direction ahead of the storm may have initialised the rotation of the

mesocyclone A mesocyclone is a meso-gamma mesoscale (or storm scale) region of rotation ( vortex), typically around in diameter, most often noticed on radar within thunderstorms. In the Northern Hemisphere, it is usually located in the right rear flank ( ...

in one of the now strong storm cells, resulting in the touchdown of the T5 tornado in Kensal Rise, London, at 11 am.

Aftermath

The

London Fire Brigade The London Fire Brigade (LFB) is the Fire department, fire and rescue service for London, the capital of the United Kingdom. It was formed by the Metropolitan Fire Brigade Act 1865 (28 & 29 Vict. c. 90), under the leadership of superintendent ...

and structural surveyors assessed the damage and structural safety of affected properties. In the meantime, several hundred people were displaced from their homes until they had been declared safe for their occupants to return.

Brent London Borough Council Brent London Borough Council, also known as Brent Council, is the local authority for the London Borough of Brent in Greater London, England. It is a London borough council, one of 32 in London. The council has been under Labour majority contro ...

, speaking to a national newspaper, announced that none of the affected properties are likely to be demolished, though a total of 29 homes have been declared as unfit for habitation due to the damage caused by the tornado.

References

External links

Six hurt as tornado hits London – BBC News
* {{DEFAULTSORT:2006 London Tornado

Tornado A tornado is a violently rotating column of air that is in contact with the surface of Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. It is often referred to as a twister, whirlwind or cyclone, although the ...

Tornado, london 2006 Tornado 2006 London 21st century in the London Borough of Brent Tornadoes in the United Kingdom Tornado, London

London London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...

Weather events in England

Meteorological synopsis

Aftermath

See also

References

External links