Jakarta, July 31 -- The Meteorology, Climatology, and Geophysics Agency (BMKG) has confirmed that the early tsunami warning is still in effect since oscillations or variations in sea level measurements are still being observed at several monitoring stations.

At a press conference on Wednesday, BMKG's director of earthquakes and tsunamis, Daryono, informed that the agency has not lifted the tsunami warning yet because wave oscillations can suddenly amplify in the final phase.

Five provinces have been put on tsunami alert -- North Sulawesi, Gorontalo, North Maluku, Papua, and West Papua, according to the tsunami early warning issued by the BMKG following the 8.7M earthquake in Kamchatka, Russia, on Wednesday morning.

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