State weather bureau Philippine Atmospheric, Geophysical and Astronomical Services Administration on Sunday announced that tropical storm "Jenny" has further intensified and may reach typhoon category in the next three days.

PAGASA said that the center of "Jenny" was located 835 kilometers east of Central Luzon packing maximum sustained winds of 85 kilometers per hour near the center and gustiness of up to 105 kph while moving northwestward at 20 kph.

Jenny is forecast to steadily gather strength and may become a severe tropical storm on Sunday and may reach typhoon category on Monday evening or on Tuesday.

The state weather bureau also said that at present, Jenny is not directly affecting the country but due to the proximity of the track forecast to extreme Northern Luzon, "heavy rainfall may be experienced over Batanes, Babuyan Islands, and the northern portions of the mainland of Cagayan, Apayao and Ilocos Norte on Wednesday or Thursday."