Coastal areas in eastern side of the country fronting the Pacific Ocean may experience tsunami of less than one meter, the Philippine Institute of Volcanology and Seismology warned Thursday following a magnitude 8.7 earthquake off Russian coast.

State seismologists said the first tsunami waves are expected to arrive between 1:20 p.m. to 2:40 p.m., July 30. They said it may not be the largest and the waves may continue for hours.

Phivolcs advised the public to be alert for unusual waves and stay away from the beach and not go to the coast of the following provinces until the cancellation of the advisory: 

Batanes Group of Islands
Cagayan
Isabela
Aurora
Quezon
Camarines Norte
Camarines Sur
Albay
Sorsogon
Catanduanes
Northern Samar
Eastern Samar
Leyte
Southern Leyte
Dinagat Islands
Surigao del Norte
Surigao del Sur
Davao del Norte
Davao Oriental
Davap Occidental
Davao del Sur
Davao de Oro

Residents whose houses are located very near the shoreline were also advised to move further inland while owner of boats in harbors, estuaries, or shallow coastal water should also move away from the waterfront.

Phivolcs said boats already at sea should stay offshore in deep waters until further notice.

(With reports from GMA News Online)