Flash floods and landslides may threaten parts of Mindanao in the next 24 hours as a low-pressure area moved closer to General Santos City Friday afternoon.
State weather forecasters also said the LPA has a good chance of becoming a cyclone as it is still at sea and can gather strength.
"May posibilidad ito (maging bagyo dahil) nasa dagat pa iyan (It has a chance of becoming a cyclone because it is still at sea)," PAGASA forecaster Gener Quitlong said in an interview on dzBB radio.
However, he said their models for now show it may not affect Metro Manila, though it may affect Mindanao and Eastern Visayas.
If the LPA becomes a cyclone, it will be locally codenamed Jolina.
As of 4 p.m., PAGASA said the LPA was estimated at 308 km east of General Santos city and embedded along the inter-tropical convergence zone affecting Mindanao.
"The regions of Caraga, Davao and SOCCKSARGEN will experience cloudy skies with moderate to heavy rainshowers and thunderstorms which may trigger flash floods and landslides," it said in its 5 p.m. bulletin.
Central and Eastern Visayas and the rest of Mindanao will have cloudy skies with light to moderate rain showers and thunderstorms, it added.
PAGASA said Metro Manila and the rest of the country will be "partly cloudy to cloudy with isolated rain showers or thunderstorms."
Meanwhile, PAGASA said moderate to occasionally strong winds from the southwest to south will prevail over the western section of Northern and Central Luzon and the coastal waters along these areas will be moderate to occasionally rough.
Light to moderate winds coming from the northeast to southeast will prevail over the rest of Luzon and Visayas and coming from the northeast to northwest over Mindanao.
The coastal waters along these areas will be with slight to moderate. — TJD, GMA News