Severe Weather warning for the UK as Heatwave ends with a bang

Britain's sizzling heatwave is set to come to an end with warnings of thunderstorms and even tornados.The erratic conditions could bring mayhem to parts of the UK as tennis fans flock to Wimbledon and thousands make the annual pilgrimage to the Glastonbury music festival.Storms moved into south Wales and some southern parts of England overnight, with prolonged outbreaks of rain expected throughout Wales and north-western England which could lead to local flash flooding.

PA WeatherCentre assistant manager Paul Knightly said the storms were likely to bring lightning and hailstones up to the size of golf balls.

"Winds in the upper atmosphere will be fairly strong, and this will promote the development of some severe thunderstorms.

"These may bring hailstones up to the size of golf balls, wind gusts up to 65 mph, extremely heavy rainfall leading to local flash flooding, and possibly isolated tornadoes.
"People should remember that with any thunderstorm, the main threat is cloud to ground lightning, and tomorrow's storms are likely to be very electrically active.

"If a storm approaches, try to get indoors quickly, and do not stand under trees."
The Tornado and Storm Research Organisation (TORRO), which is a privately funded group researching extreme weather phenomenon, predicted possible tornados.

The group was founded in 1974 and has been making severe weather forecasts for the last five years.
Britain experiences an average of 35 small scale tornados each year, mostly concentrated in the south and east of England

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