Manila, Jan. 21 -- Tropical Depression (TD) Ada (international name Nokaen) still maintains its strength, but is forecast to weaken into a low pressure area (LPA) by Wednesday or Thursday, the weather bureau said in its 5 a.m. bulletin.

The TD packs maximum sustained winds of 55 kph near the center, and gustiness of up to 70 kilometers per hour (kph).

"Dry air entrainment from the surge of northeast monsoon will result in downgrading Ada into LPA," the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said on Wednesday.

Ada was located 1,215 km. east of Northern Luzon as of 4 a.m. The cyclone is moving east southeast at 20 kph.

Still, no tropical cyclone wind signal is hoisted on any part of the cou...