Eyewitnesses have told ITV News Central a number of loud explosions could be heard from the fire at G&P batteries in Darlaston, Walsall.
50 firefighters are currently tackling the blaze on Willenhall Road.
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It will be a cloudy start with rain clearing east during the morning.
Feeling cool with outbreaks of rain accompanied by strong winds.
It will be a rather cloudy and damp evening as a band of rain sinks slowly south across the region.