"Do continue to monitor local news and look out for advisories from Pagasa", it added, referring to the Philippine Atmospheric, Geophysical and Astronomical Services Administration.
A powerful typhoon ripped off tin roofs, flooded low-lying villages and damaged an airport overnight and early Tuesday as it blew through a Philippine region where tens of thousands of villagers had fled to safety.
In Manila, officials shut the worldwide airport for seven hours starting before noon Tuesday as the typhoon roared through provinces south of the capital.
Typhoon Kammuri barrelled across the Philippines with fierce winds and rain Tuesday, leaving at least four people dead, forcing hundreds of thousands of villagers to abandon high-risk communities and prompting officials to shut Manila's global airport.
A typhoon struck the Philippines on Tuesday, killing one man and bringing heavy rains that prompted suspension of air travel and government offices in the capital, and warnings of floods, storm surges and landslides.
Almost 70,000 people have already fled their homes in the Bicol region, where the typhoon is expected to strike first.
"We're aiming for zero casualties and we can attain that with preemptive evacuations, " said Ricardo Jalad, who heads the government's disaster response agency.
Ninoy Aquino International Airport's runways were opened at 6 p.m. local time to allow airlines to bring back their aircraft to Manila, General Manager Ed Monreal said in a statement. The 20th storm to enter the Philippines this year is following a track similar to typhoon Rammasun in July 2014, which killed 106 people in the southeast Asian country and damaged properties worth 38.6 billion pesos ($759 million).
The windsurfing competition was halted as a precaution and triathlon events were held earlier than scheduled.
"There could have been more if we did not do pre-emptive evacuations", Dolor told reporters. The storm is another difficulty for the Games, which suffered from a string logistical glitches and a rush of last-minute construction in the run-up to Saturday's opening.
Metro Manila and a dozen areas are under signal 2.
Around 8,750 athletes and team officials are expected at this year's 30th edition - the biggest ever - along with another 12,000 volunteers. Organisers hope more than 500 million viewers will tune in on TV by the end of the competition on December 11.