Typhoon “Bising” (international name “Surigae”) moved north-northwest over the Philippine Sea east of mainland Cagayan Valley on Wednesday morning, April 21, based on the latest severe weather bulletin of the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA).
PAGASA located the center of the eye of Bising at 395 kilometers east of Tuguegarao City, Cagayan around 4 a.m.
It said Bising has maintained its maximum sustained winds of 175 kilometers per hour (kph) near the center and gustiness of up to 215 kph while moving north-northwest at 15 kph.
Tropical cyclone wind signals have been lifted or downgraded in a few areas but signal numbers 1 and 2 were kept hoisted over the eastern section of Luzon.
In the PAGASA’s 5 a.m. bulletin, the eastern portion of Cagayan and eastern portion of Isabela remained under Signal No. 2.
Meanwhile, Signal No. 1 was still up in Batanes, rest of Cagayan including Babuyan Islands, rest of Isabela, Quirino, Apayao, eastern portion of Kalinga, eastern portion of Mountain Province, eastern portion of Ifugao, northern and central portions of Aurora, Polillo Islands, northern portion of Camarines Norte, northeastern portion of Camarines Sur, and northern portion of Catanduanes.
“Tropical cyclone winds of at least strong breeze to near-gale in strength extend outward up to 440 km from the center of the typhoon. (Likewise), destructive typhoon-force winds extend outward up to 90 km from the center of the typhoon,” PAGASA warned.
In the next 24 hours, PAGASA said the northeasterly wind flow enhanced by Bising will also bring strong breeze to near-gale conditions with higher gusts over the coastal and mountainous areas of Northern Luzon that are not under any tropical cyclone wind signal.
Bising and the enhanced northeasterly surface wind flow may also trigger rough to high seas over the northern and eastern seaboards of Luzon with wave heights up to 2.5-9.0 meters (m).
Rough to very rough seas will likewise prevail over the western coastline of Northern Luzon (2.8-4.5 m) and the northern and eastern coasts of Northern Samar (2.5-5.0 m).
“Sea travel is risky for all types of seacrafts over these waters,” PAGASA advised.
Bising’s projected track and intensity
Typhoon Bising is expected to continue to move generally north or north-northwest until Thursday morning, April 22 when the typhoon will be nearest the landmass of northern Luzon, PAGASA said.
Afterward, the typhoon will begin to move northeast away from the Luzon landmass throughout Thursday and east-northeastward by Friday, April 23.
Bising is projected to exit the Philippine area of responsibility (PAR) by Sunday, April 25.
PAGASA said Bising will gradually weaken throughout the forecast period and could be downgraded into a severe tropical storm by Saturday and a tropical storm by Sunday.
Bising will likely be at 330 km east of Calayan, Cagayan by Thursday morning; 440 km east of Basco, Batanes by Friday morning; 900 km east-northeast of extreme northern Luzon by Saturday morning; and 1,445 km east of extreme northern Luzon or outside the PAR by Sunday morning.