MANILA (UPDATE) – Typhoon Chedeng (international name: Maysak) weakened further as it moved across sea towards the Aurora-Isabela area, state weather bureau PAGASA said Thursday.
PAGASA said as of 10 a.m., the typhoon was seen carrying maximum winds of 175 kilometers per hour near the center with gustiness of up to 210 kph.
It was last spotted 915 kilometers east-northeast of Borongan, Eastern Samar, moving west northwest at a speed of 19 kph.
The weather bureau said the typhoon’s diameter also shrunk to 500 kilometers from 600 km when the typhoon entered the Philippine area of responsibility (PAR) Wednesday night.
However, the typhoon is still moderate to heavy rains within the 150-200 km radius from the eye.
PAGASA expects Chedeng to weaken further as it approaches the eastern seaboard of Luzon, and may continue to lose intensity upon landfall either late Saturday or early Sunday.
The typhoon may hit the Aurora-Isabela area and traverse the central and northern Luzon regions before exiting PAR by Monday afternoon.
PAGASA warned that despite weakening, the typhoon is still packing strong winds and heavy rains.
According to NASA, the typhoon was seen “dropping rain at a rate of over 70 mm (2.8 inches) per hour northwest of a well-defined eye,” based on data from its Global Precipitation Measurement core observatory's Microwave Imager (GMI).
Tropical Storm Ondoy, which caused massive flooding in 2009, dumped rains at a rate of 57 mm per hour while Typhoon Yolanda brought rains of over 100 mm per hour.
No storm signals have been raised so far, but PAGASA said it will raise storm signal number 1 in Bicol and northern Samar provinces by Thursday afternoon. Sea travel over these areas will be suspended once the signal has been raised.
Residents living in the coastlines of Samar, Bicol, and Aurora are warned of possible storm surges or surface waves of less than 3 meters.
PAGASA also issued warnings against possible landslides and flashfloods. Fisherfolks are also advised not to venture out over the eastern seaboard of Bicol Region and of Visayas.
Eastern Luzon may experience rain and gusty winds as early as Friday, but stormy weather is expected over the Bicol region as well as central and northern Luzon by Saturday.
Greater Metro Manila will also experience rain and gusty winds while the rest of the country will have warm and humid conditions on Saturday.
The Department of Interior and Local Government (DILG), meanwhile, said it has coordinated with the local government units of 9 regions that are expected to be affected by the typhoon.
DILG said special attention will be given to Aurora, Isabela, Quirino and northern part of Quezon, which will be hit by the typhoon's 75 km radius.