Super Typhoon Uwan has now weakened into a typhoon with Signal No. 4, as the highest tropical cyclone warning signal hoisted over 13 areas in Northern and Central Luzon, the state weather bureau said early Monday morning.

In its 2 a.m. tropical cyclone bulletin, PAGASA said the center of the eye of Uwan was in the vicinity of Bagulin, La Union as of 1 a.m. Monday and is still moving northwestward at 30 km/h with maximum sustained winds of 165 km/h near the center, gustiness of up to 275 km/h, and central pressure of 945 hPa.

The highest tropical cyclone warning signal in effect is now Signal No. 4. The tropical warning signals are as follows:

PAGASA also issued a new storm surge warning for low-lying and exposed coastal communities in Ilocos Region, Cagayan Valley, Central Luzon, Metro Manila, CALABARZON, most of MIMAROPA, Camarines Norte, Camarines Sur, Catanduanes, Masbate including Burias Island, Aklan, Antique, Guimaras, Negros Occidental, Negros Oriental that may be hit with storm surges exceeding heights of three meters.

Earlier, Uwan made landfall over Dinalungan, Aurora at 9:10 p.m. Sunday night.

The state weather bureau said the typhoon will emerge over La Union's coastal waters on Monday morning and will maintain its strength over the West Philippine Sea until Tuesday, November 11.

Uwan will begin to turn northwestward to northward from Monday until Tuesday while remaining at typhoon category, and will turn northeastward towards the Taiwan Strait on Wednesday.

"It is forecast to make landfall over western Taiwan on Thursday (13 November), then rapidly weaken over the Taiwan landmass before emerging over the waters near Ryukyu Islands before weakening further into a remnant low," PAGASA said.

However, the state weather bureau warned that "heavy rainfall, severe winds, and storm surge may still be experienced far from the landfall point or center track, and even in areas outside the forecast confidence cone." -- JMA, GMA Integrated News