The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) placed nine areas under Tropical Cyclone Wind Signal (TCWS) No. 1 as Tropical Storm “Maring” continues to assimilate the remnants of former Tropical Depression Nando.

In its 5 a.m. bulletin Sunday, the weather bureau hoisted TCWS No. 1 over Catanduanes, Batanes, Cagayan including Babuyan Islands, northeastern portion of Isabela, Eastern Samar, eastern portion of Northern Samar, eastern portion of Samar, Dinagat Islands and Surigao del Norte.

PAGASA said “Maring” was estimated based at 660 kilometers east of Virac, Catanduanes with maximum sustained winds of 85 km per hour near the center and gustiness of up to 105 kph while moving northward at 20 kph.

Meanwhile, “Nando” that weakened into low pressure area (LPA) was estimated at 555 km east of Virac, Catanduanes.

The weather bureau said the merger of “Maring” and the LPA “will likely be completed in the next six to 12 hours”.

“Afterwards, the merger cyclone is forecast to gradually intensify within the forecast period. It may be upgraded to severe tropical storm category within the next 24 to 36 hours,” it added.

Samar provinces, Surigao del Norte and Dinagat Islands will experience rains with gusty winds due to “Maring”.

The rest of Visayas and of Mindanao, Mimaropa, and Bicol Region will have partly cloudy to cloudy skies with isolated rain showers also due to “Maring” and southwesterlies.

As for Metro Manila and the rest of Luzon, cloudy with scattered rain showers and thunderstorms will prevail due to localized thunderstorms.

Residents in affected areas are warned against possible flash floods or landslides during severe thunderstorms.

PAGASA forecast light to moderate to strong winds moving northeast to northwest will blow over the seaboards of Luzon with slight to moderate coastal waters.

Moderate to strong winds blowing southwest will be experienced in the eastern seaboards of Visayas and Mindanao with slight to moderate to rough coastal waters.

Meantime, the rest of the country will experience moderate to strong winds moving southwest to west.

The maximum temperature will be 32.6 °C and the minimum temperature will be 25.6 °C.