Rains will be felt beginning late this evening, according to the Philippine Atmospherics, Geophysical and Astronomical Services Administration.
Pagasa warned that the Bicol region and Quezon province will experience intense rains beginning Tuesday, as Tropical Storm Glenda moves towards Central Luzon.
Southern and central Luzon including Metro Manila will also experience rains and gusty winds beginning Tuesday, and the weather is expected to turn stormy by Tuesday evening until Wednesday.
In a news conference Sunday night, PAGASA officials also warned of floods and landslides in Central Luzon (Region 3) and some areas of Ilocos (Region 1) and Cagayan Valley (Region 2) as a result of Tropical Storm Glenda.
Tropical Storm Glenda is sure to make landfall, according to weather forecaster Jori Luiz.
He said that if the storm maintained its current path, it would make landfall over Aurora, Quezon.
However if there were changes in the path, the storm could hit land over Isabela or Cagayan, or somewhere over Bicol, he said.
“We’re forecasting heavy rains will occur when Tropical Storm Glenda hits land,” said chief weather forecaster Robert Sawi.
The storm is expected to exit over Zambales or Bataan on Thursday.
The storm’s effect will be felt Monday morning over Zambales, Bataan, Cavite and Batangas, while the rest of Luzon will begin to experience rains by Monday night, according to Luiz.
He said Mindanao and parts of Eastern Visayas would experience rains beginning Monday night, with the storm enhancing the southwest monsoon.
Luiz said Tropical Storm Glenda would bring intense rains over Bicol region by Tuesday night.
Dr. Vicente Malano, Pagasa chief, said the storm would likely dump “intense rains” at 20 millimeters per hour.
Located east of the Bicol region and moving westwards, Tropical Storm Glenda has been tracked to enter the Philippine area of responsibility past 10 p.m. Sunday.
As it neared the country Sunday, Tropical Storm Glenda packed sustained winds at 65 kilometers per hour and gustiness of up to 80 kilometers per hour.
Pagasa said the storm might intensify into a typhoon upon entering the Philippine area of responsibility.
Pagasa chief hydrologist Sonia Serrano said the storm would hopefully bring up the water levels in the country’s dams, including the Angat Dam which supplies Metro Manila’s water needs. She said all dams have been below normal levels.