The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said it may hoist tropical cyclone wind signals if the track of severe tropical storm Inday (international name: Muifa) shifts further west or circulation expands over parts of extreme Northern Luzon.

“The latest forecast scenario for Inday shows that while the hoisting of tropical cyclone wind signals remains less likely at this time, further westward shift in the track forecast and/or expansion in the extent of tropical cyclone winds may result in the hoisting of wind signals over portions of extreme Northern Luzon,” PAGASA said in its 5 a.m. bulletin Saturday, Sept. 10.

PAGASA said the center of Inday was estimated at 495 kilometers east of Basco, Batanes at around 4 a.m.

It has maximum sustained winds of 110 kilometers per hour (kph) near the center and gustiness of up to 135 kph, and was moving west-northwestward at 20 kph.

“Severe tropical storm Inday remains less likely to directly bring heavy rains in the country throughout the forecast period. However, its trough may bring heavy rainshowers during thunderstorms over Southern Luzon and the western portions of Central Luzon and Visayas,” PAGASA said.

Cloudy skies with scattered rain showers and thunderstorms may prevail over Bataan, Zambales, Cavite, Laguna, Batangas, Rizal, Quezon, Oriental Mindoro, Occidental Mindoro, Marinduque, Romblon, Palawan, Bicol Region, and Western Visayas.

Meanwhile, the rest of the country, including Metro Manila, will have partly cloudy to cloudy skies with isolated rain showers or thunderstorms due to localized thunderstorms.

Based on the latest track forecast, Inday will likely leave the country’s area of responsibility between Tuesday and Wednesday, Sept. 13 to 14.