MANILA - Two areas in the Bicol Region were placed under storm signal number 1 Wednesday night due to Typhoon Ompong (international name Super Typhoon Mangkhut), state weather bureau PAGASA said.

In its 11 p.m. bulletin, PAGASA said the typhoon has maintained its strength, packing maximum sustained winds of 205 kilometers per hour (kph), with gusts of up to 255 kph.

Catanduanes and Camarines Sur, which have been placed under Tropical Cyclone Warning Signal no. 1, will start experiencing occasional rains and gusty winds, PAGASA said.

The eye of the typhoon was last spotted 1,005 kilometers east of Virac, Catanduanes.

The typhoon, which is moving west-northwest at 20 kph, is expected to make landfall over the northern tip of Cagayan on Saturday, September 15.

Ompong may become a super typhoon under PAGASA's categories of tropical cyclones Thursday, reaching a peak intensity of 220 kph winds and 270 kph gusts.

Signal number 1 may be raised over Cagayan, Isabela, Aurora, Quirino, Polilo Islands, Camarines Norte, and Albay on Thursday, September 13.