Petropawlowsk-Kamtschatki-An earthquake of the strength 7.7 shaked the Kamchatka peninsula in the Far East of Russia in the night. The center of the quake was at a depth of almost 40 kilometers below the surface of the sea, about 125 kilometers northeast of Petropawlowsk-Kamtschatki, as the agency TASS reported. The authorities issued a tsunami warning.