MANILA -- Tropical depression Amang made landfall over Siargao Island Sunday night, state weather bureau PAGASA said.

Amang made landfall over Siargao Island at 8 p.m.

The storm was last seen 135 kilometers east of Surigao City, Surigao del Norte at 7 p.m.

It has maintained its strength, packing maximum sustained winds of 45 kilometers per hour and 60 kph gusts.

Amang is moving west northwest at 25 kph.

It is expected to bring moderate to heavy rains, with "high risk" of floods and landslides in Caraga, Northern Mindanao, Eastern Visayas, Davao Oriental, Compostela Valley, Catanduanes, Albay, Sorsogon, Masbate, Northern Negros Provinces, Northern Cebu, and Bohol.

PAGASA also raised public storm warning signal number 1 in Eastern Samar, Samar, Biliran, Leyte, Southern Leyte, Eastern Bohol and Northern Cebu, Agusan del Sur, Agusan del Norte, Surigao del Sur, Surigao del Norte, Dinagat Islands and Camiguin.

These areas may be whipped by 30 to 60 kph winds in 36 hours, said the weather agency.

It also advised fishermen and small sea vessels to refrain from sailing off the northern seaboard of Northern Luzon, and eastern seaboards of Luzon, Visayas and Mindanao.

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