MANILA, Philippines — The Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa) on Sunday placed more areas in Luzon under Signal No. 1 as Tropical Depression Enteng slightly intensified.

Under Signal Number 1 are the southeastern portion of Cagayan (Baggao and Peñablanca), the eastern portion of Isabela (Palanan, Dinapigue, Divilacan, San Agustin, San Guillermo, Jones, Echague, San Mariano, Maconacon, San Pablo, Cabagan, Tumauini and Ilagan City), the southern portion of Quirino (Nagtipunan and Maddela), the northern portion of Aurora (Dilasag, Casiguran, Dinalungan, Dipaculao and Baler), Polillo Islands, the southern portion of mainland Quezon (Tagkawayan, Guinayangan, Buenavista, San Narciso, Mulanay, San Andres, San Francisco, Lopez, Calauag, Catanauan, Gumaca, Macalelon, General Luna, Quezon, Alabat and Perez), Camarines Norte, Camarines Sur, Catanduanes, Albay, Sorsogon, and Masbate including Ticao and Burias Islands.

In Visayas, Signal No. 1 was raised in Northern Samar, Samar, Eastern Samar, Biliran, and the northeastern portion of Leyte (Babatngon, San Miguel, Tacloban City, Alangalang, Santa Fe, Palo and Barugo).

Estimated some 100 kilometers northeast of Catarman, Northern Samar, the tropical depression is moving westward at 15 kilometers per hour (kph) with maximum sustained winds of 55 kph near the center and gustiness of up to 70 kph.

Pagasa said "Enteng" may make landfall in the vicinity of Catanduanes or Albay in the next 12 hours.

Another landfall in Northern Luzon or Babuyan Islands was not ruled out.

Pagasa said "Enteng" has the possibility of reaching typhoon category by Thursday or Friday.