MANILA, Dec. 16 — Typhoon "Nona" has weakened slightly and is moving slowly over the West Philippine Sea, the state weather bureau Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said in its 11 a.m. weather bulletin on Wednesday.
PAGASA weather forecaster Aldczar Aurelio said as of 10 a.m., the eye of typhoon Nona was located based on all available data including Tagaytay and Subic Doppler Radars at 90 km west of Ternate, Cavite (14.3°N, 119.9°E).
The typhoon's maximum sustained winds decreased from 130 kph to 120 kph near the center and its gustiness also was reduced from 160 to 150 kph.
Nona continues to move west northwest, decelerating its speed from 9 kph to 7 kph.
Aurelio said the weakening and slow movement of the typhoon is due to interaction of landmass and the presence of northeast monsoon cold winds.
However, Aurelio said typhoon Nina continues to bring rains and gusty wind in most parts of Luzon including Metro Manila until Thursday morning.
He noted that gradual weather improvement is expected on Thursday afternoon as typhoon Nona is expected to weaken into a tropical depression category and exits PAR by Friday.
Meanwhile, public storm warning signal no. 2 (61-120 kph expected in 24 hours) is raised in the provinces of Bataan, Southern Zambales, Cavite, Batangas and Lubang Island.
Signal no. 1 (30-60 kph expected in 36 hrs) is hoisted over Metro Manila, as well as in the provinces of Zambales, Pampanga, Bulacan, Tarlac, Rizal, Laguna, Northern Occidental Mindoro and Northern Oriental Mindoro.
Flashfloods and landslides are expected over the areas under Public Storm Warning Signals.
Storm signals elsewhere have been lifted.
The estimated rainfall amount is from heavy to at times intense within the 250 km diameter of the typhoon.
Meanwhile, Aurelio said the tropical depression outside the Philippine Area of Responsibility (PAR) was estimated at 1,180 km east of Mindanao (7.5°N, 136.5°E) packed with maximum winds of 45 kph. It is forecast to move west northwest at 23 kph.
Aurelio said tropical depression is expected to enter PAR on Wednesday afternoon and will be named "Onyok", the 15th tropical cyclone to affect the country this year.
However, it will not directly affect the country but on Friday, it is expected to hit land in eastern Mindanao or in Davao region or in Caraga region.
He added that the tropical depression is expected to intensify into a tropical storm since its in the sea. (PNA)