State weather bureau PAGASA raised tropical cyclone warning signal number 1 over 5 areas in northern Luzon Tuesday morning amid the threat of Tropical Depression Kiko.
In its 5 a.m. advisory, PAGASA said signal number 1 is hoisted over Cagayan, Ilocos Norte, Apayao, Batanes, and the Babuyan group of islands.
The areas should expect winds reaching 60 kilometers per hour in 36 hours.
The tropical cyclone, which is packing maximum sustained winds of 55 kph near the center and gusts of up to 65 kph, maintained its strength early Tuesday as it continues to move towards extreme northern Luzon, PAGASA said.
It is bringing moderate to heavy rainfall within its 300-kilometer diameter.
"Kiko"is expected to pass extreme northern Luzon by Wednesday morning and exit the Philippine area of responsibility by Wednesday night.
It was last spotted 345 km east of Casiguran, Aurora as of 4 a.m. Tuesday.
Meanwhile, moderate to occasionally heavy rains are expected over northern Luzon beginning Tuesday. Residents in these areas advised to be alert against possible flashfloods and landslides, PAGASA said.
Sea travel is also risky over the eastern seaboards of northern and central Luzon due to the approaching tropical depression, the state bureau warned.