Manila, Jan. 15 -- More areas have been placed under tropical cyclone wind signal (TCWS) no. 1 as Tropical Depression Ada is forecast to reach tropical storm category, the weather bureau reported on Thursday.

Ada slightly intensified, packing maximum sustained winds of 55 kilometers per hour (kph) near the center, and gustiness of up to 70 kph, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) reported in its 5 a.m. advisory.

It was last tracked 385 kilometers (km) east-northeast of Hinatuan, Surigao del Sur, or 465 km east of Surigao City, Surigao del Norte. It is moving northwest at 20 kph.

Strong winds will be experienced in the following areas where TCWS no. 1 is hoisted:

Luzon: Sorsogon, an...