MANILA – The southwest monsoon (habagat) will continue to cause rains across Luzon, while parts of Mindanao will also experience rains due to the intertropical convergence zone (ITCZ), the weather bureau said Tuesday.
In its 4 a.m. bulletin, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said scattered rains and thunderstorms caused by "habagat" will prevail over Ilocos Region, Abra, Benguet, Zambales, Bataan, Tarlac, and Pampanga.
The same weather condition caused by the ITCZ is forecast over Basilan, Sulu, Tawi-Tawi, Sultan Kudarat, South Cotabato, Sarangani, Davao Occidental, and Davao Oriental.
Floods and landslides are possible in those areas due to moderate to heavy rains.
"Habagat" will also cause isolated rain showers or thunderstorms over the rest of Luzon.
Localized thunderstorms will bring isolated rain showers over the rest of the archipelago.
As of 2 a.m., meanwhile, no low pressure area is being monitored for possible tropical cyclone formation.
Moderate to strong winds and moderate to rough seas are forecast over the northern and western sections of Luzon.
Elsewhere, light to moderate winds and slight to moderate seas will continue to prevail.
Meanwhile, the heat index could peak at 47°C in Guiuan, Eastern Samar.
A 45°C heat index is forecast in Aparri, Cagayan; Tuguegarao City, Cagayan; ISU Echague, Isabela; Virac (Synop), Catanduanes; and Masbate City, Masbate.
The heat index could reach 44°C in Infanta, Quezon; Calapan, Oriental Mindoro; Daet, Camarines Norte; Juban, Sorsogon; and Dipolog, Zamboanga del Norte.
PAGASA forecasts a 43°C heat index in these areas:
Sangley Point, Cavite City
Alabat, Quezon
Coron, Palawan
Cuyo, Palawan
Legazpi City, Albay
CBSUA-Pili, Camarines Sur
Roxas City, Capiz
Dumangas, Iloilo
Catbalogan, Western Samar
Tacloban City, Leyte
Borongan, Eastern Samar
Surigao City, Surigao del Norte
A 42°C heat index is expected in the following:
Sinait, Ilocos Sur
Baler (Radar), Aurora
Casiguran, Aurora
Ambulong, Tanauan, Batangas
San Jose, Occidental Mindoro
Romblon City, Romblon
Bicol University - Guinobatan, Albay
Iloilo City, Iloilo
Siquijor, Siquijor
Catarman, Northern Samar
Maasin, Southern Leyte
Zamboanga City, Zamboanga del Sur
Butuan City, Agusan del Norte
Heat index refers to the temperature felt by the human body when relative humidity is factored in with actual air temperature.
Under "danger” level conditions, ranging from 42°C to 51°C, the public is warned of increased risks of heat cramps, heat exhaustion, and heat stroke with prolonged exposure. (PNA)