W. Va. Code § 51-2-4
If any term of such court has ended without dispatching all its business, or if there be a failure to hold any term, or whenever he thinks the public interest requires it, the judge of the circuit court may, by a warrant directed to the clerk, appoint a special term thereof and prescribe in such warrant whether a grand or petit jury, or both, are to be summoned to attend such term. The clerk shall enter the warrant in the order book of the court, inform the prosecuting attorney and the sheriff of such appointment, post a copy of the warrant at the door of the courthouse, and issue all proper process returnable to such special term; and the sheriff shall execute such process, and summon a grand or petit jury, or both, as may be prescribed in the warrant. Any such special term may be held in any county, although at the time the same is held a term of the circuit court is being held, or required to be held, in any other county of the same judicial circuit, and it may be held by the judge of another circuit, or by a special judge elected by the attorneys practicing in such court in the manner prescribed by law.
W. Va. Code § 51-2-4