Tropical Storm Lawin (Jelawat) slightly intensified and changed course, moving in a west-southwest direction before noon Friday.
Philippine Atmospheric, Geophysical and Astronomical Services Administration's (PAGASA) advisory said Tropical Storm Lawin was estimated at 600 km east of Virac, Catanduanes as of 10 a.m. Friday.
It said Lawin packed maximum sustained winds of 75 kph near the center and gustiness of up 90 kph.
Lawin was moving west-southwest at 11 kph and is expected to be 415 km east of Legaspi City Saturday morning, and 250 km northeast of Legaspi City Sunday morning.
By Monday morning it is expected to be 370 km northeast of Infanta, Quezon.
However, the Japan Meteorological Agency indicated Tropical Storm Lawin may eventually move north-northwest.
PAGASA also said that while no tropical storm warnings had been raised, Lawin may bring rainfall of 10 to 20 mm per hour (moderate to intense) within its 600-km diameter.
It added Tropical Storm Lawin is still too far to directly affect any part of the country.