Colonel Vladyslav Nazarov, spokesman for the Southern Operational Command, reported the information on Facebook.
The total volley may include 20 Kalibr missiles. Nazarov warned that Russian forces have intensified reconnaissance with drones.
"Taking into account the night attack by Shahed-131/136 “kamikaze” drones and the increased activity of enemy aircraft, preparations for missile strikes are evident," the statement said.