Part of the Grand Western Canal near Tiverton has collapsed because of the huge volume of rainwater. Thousands of gallons escaped yesterday from the two hundred year old structure, and some local houses have been evacuated.
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Pupils at Hayle Community School launched the pasty as part of a project they are undertaking.
After a dry end to the day, it will grow colder overnight with a light breeze.
It will turn chilly tonight with largely clear skies and light winds.