A large industrial unit fire has broken out in Southend Road between East Hanningfield and Rettendon.
Around 45 firefighters and 11 fire engines are currently tackling the blaze.
The Essex Fire Service addressed the situation on their social media account.
They said: "We’re currently at the scene of large industrial unit fire in Southend Road between East Hanningfield and Rettendon.
"If you live or are travelling nearby, please keep your windows and doors closed."
The East of England Ambulance Service has classified the incident as a "significant" event.
The explosions have reportedly been heard up to 12 miles away.
The Essex County Fire and Rescue Service have focused on preventing the flames from spreading to neighbouring commercial units and farm properties.
They are drifting several miles and remaining clearly visible across south Essex, Chelmsford, and Maldon.
Residents have taken to social media to express their concern about the situation.
