"One of the storage tanks located at the Calcasieu Refining Facility sustained a lightning strike shortly before 2:00 p.m. afternoon [19:00 GMT]. The lighting strike ignited the product inside (Naphtha) of it and it became engulfed in flames," the police said in a statement.
A mandatory evacuation order was issued for the surrounding area within 1.5 miles of the incident, the police added, sharing photos of the blaze and a plume of black smoke from it.
No injuries have been reported, the NBC broadcaster said.