The fire started at a factory on Hampton Park Road in Hereford at around 8am.
Some residents in the nearby area have been evacuated to Hereford Leisure Centre on Holmer Road.
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Any early cloud will break, with some sunny spells developing during the morning.
Generally cloudy with fairly persistent rain through this evening.
A cloudy evening, with sporadic outbreaks of rain or drizzle. These will ease away overnight, with a few clear spells around dawn.