MANILA- Tropical Storm Siony gained some strength over the Philippine sea, meteorologist PAGASA said just before noon Tuesday as Tropical Storm Rolly was about to leave the country after devastating the east coast of Luzon over the weekend.
Siony was packing up maximum sustained wind speeds of 85 kilometers per hour (kph), with gusts of up to 105 kph, the national weather agency said in its 11 a.m. bulletin. It was last seen 565 kilometers (372 miles) east of the Basque Country, Batanes.
PAGASA said Siony was expected to intensify into a severe tropical storm Wednesday and could turn into a typhoon Thursday before it grazed or hit the ground in the far north of Luzon.
"A landfill scenario over the Batanes-Babuyan Islands area around Friday is still likely," he said. "However, because of the near-steady state projected for this tropical storm, there remains a high degree of uncertainty in the projected path.
On Tuesday, the Siony ditch or extension and the Northeast will bring moderate light with sometimes heavy rains over Batanes, Apayao, Cagayan and Isabela.
PAGASA has warned that flooding can occur during heavy or prolonged rains, especially in areas highly susceptible to these hazards.
Philippines prepares for another tropical cyclone after Typhoon Rolly kills 20 people
The Fury of Super Typhoon Rolly
Meanwhile, Tropical Storm Rolly, which made the storm a super-typhoon and then weakened on its way through parts of southern Luzon on Sunday leaving at least 20 people dead, is about to leave the area of responsibility in the Philippines (PAR).
PAGASA said the tropical cyclone, by far the strongest storm in the world this year, was last seen 540 kilometers west of Subic, Zambales.
Rolly also gained some strength, packing maximum sustained winds of 75 kph and gusts of up to 90 kph.
The agency said Rolly was no longer directly affecting the country and could remain a tropical storm for the entire forecast period.
PAGASA also warned travelers that the combined effects of the two tropical storms and the surge in the northeast would bring choppy seas up to 4.5 meters off the northern coast of Luzon.
Sea travel is risky in these waters, especially for those who use small boats.
Image Courtesy of Japanese Meteorological Agency