MANILA - The US Navy's Joint Typhoon Warning Center (JTWC) has upgraded Typhoon "Ruby" into a "supertyphoon." The storm entered the Philippine area of responsibility early Thursday morning.
In its latest bulletin, the JTWC said Ruby was already packing maximum sustained winds of "130 KT" (240 kph) with "GUSTS [of] 160 KT" (296 kph).
A typhoon is classified as a supertyphoon if it brings maximum sustained winds of 220 kph.
In its 5 a.m. bulletin, the Philippine Atmopsheric Geophysical and Astronomical Services Administration (Pagasa) still classified Ruby as a typhoon with maximum sustained winds of 175 kilometers per hour near the centre and gusts of up to 210 kph.
Aldczar Aurelio of Pagasa said Ruby crossed into the PAR at about 2 a.m. and continued on a path towards Eastern Visayas. He said it was still too far to affect the country. As of 4 a.m. Thursday, Ruby was 942 kilometers east northeast of Hinatuan in Surigao del Sur or 1,023 kilometers east of Surigao City, Pagasa said. It is forecast to move west northwest at 25 kph.
State forecasters are monitoring whether it would recurve or change course and head towards southern Japan or make landfall in Eastern Visayas.
Aurelio said there was a 75 per cent chance that Ruby would make landfall in the Philippines and a 25 per cent chance it would change course.
He explained that the recurve would depend on a high pressure area (HPA) in the northeast. If the HPA weakens, Ruby could move upward and avoid the country.
As of Wednesday night, Pagasa said Ruby was headed towards the vicinity of Borongan, Eastern Samar, which it could hit Saturday afternoon or evening.