The weather disturbance outside the Philippine area of responsibility (PAR) has intensified into a typhoon, the state weather bureau confirmed on Thursday afternoon, Sept. 15.

Typhoon Nanmadol was last spotted 1,655 kilometers (km) east northeast of extreme Northern Luzon outside PAR with maximum sustained winds of 120 kilometers per hour (kph), and gustiness of up to 150 kph.

It is moving northeastward at 15 kph and it remains less likely to directly affect the country. However, PAGASA warned that this weather disturbance is expected to further enhance the southwest monsoon, locally called “habagat.”

The typhoon-enhanced southwest monsoon will then bring scattered rain showers and thunderstorms in Palawan, Mindoro provinces, Western Visayas, Zamboanga Peninsula, Basilan, Sulu, and Tawi-tawi within the forecast period.

Residents of these areas were advised to remain vigilant against possible flash floods and landslides that may occur during moderate to heavy rains.

Partly cloudy to cloudy skies with isolated rain showers may prevail over Metro Manila and the rest of the country due to the southwest monsoon and localized thunderstorms.

Meanwhile, the latest forecast track for typhoon Nanmadol showed that the cyclone will still enter the Philippine boundary.

“Posible pa rin itong pumasok ng PAR bukas, ngunit ito ay dadaplis lamang dito sa northeastern na kanto ng ating PAR. Pagpasok nito bukas ng umaga ay lalabas either hapon o gabi (It may still enter PAR tomorrow, but it is expected to just pass in the northeastern corner of the country’s area of responsibility. When it enters tomorrow morning, it will also exit the Philippine boundary either in the afternoon or evening),” said Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) weather specialist Raymond Ordinadio.

“Halos isang araw lang itong mananatili sa ating area of responsibility kaya wala itong magiging direktang epekto sa anumang bahagi ng bansa (It will only stay in our area of responsibility for almost one day so it will not have a direct effect on any part of the country),” he furthered.

Nanmadol will be given the domestic name Josie once inside the Philippine boundary.