This is the strongest earthquake since 1952 occurred in the Kamchatka region PETROPAVLOVSK-KAMCHATSKY, July 30. /TASS/. The strongest earthquake over the entire recorded observation period rocked the Kamchatka Region with its magnitude reaching 8.7 according to various estimates. A tsunami wave made landfall on the coast near Severo-Kurilsk, the government of the Sakhalin Region told TASS. TASS has gathered the key facts about the emergency. What occurred - Seismologists recorded a strong