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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Showers will continue through the day and may turn locally heavy with a risk of hail and thunder.
A few sunny spells are likely but remaining rather cloudy with further locally heavy rain or showers expected through the morning.
The football club will make history if they beat Manchester United this weekend - and Gary Lineker will present MOTD in his undies.