At least 30 areas are expected to reach a "dangerous level" of heat index up to 47 degrees Celsius on Wednesday, April 24, according to the state weather bureau PAGASA.
The following areas are forecasted to experience a 42 to 46 degrees Celsius heat index:
- Central Bicol State University of Agriculture in Pili, Camarines Sur – 46 degrees Celsius
- San Jose, Occidental Mindoro – 45 degrees Celsius
- Puerto Princesa City, Palawan – 45 degrees Celsius
- Aborlan, Palawan – 45 degrees Celsius
- Dagupan City, Pangasinan – 45 degrees Celsius
- Aparri, Cagayan – 45 degrees Celsius
- Naia, Pasay City – 44 degrees Celsius
- Tuguegarao City, Cagayan – 44 degrees Celsius
- Guiuan, Eastern Samar – 44 degrees Celsius
- Science Garden, Quezon City – 43 degrees Celsius
- Sangley Point, Cavite – 43 degrees Celsius
- Central Luzon State University in Muñoz, Nueva Ecija – 43 degrees Celsius
- Legazpi City, Albay – 43 degrees Celsius
- Virac (Synop), Catanduanes – 43 degrees Celsius
- Masbate City, Masbate – 43 degrees Celsius
- Coron, Palawan – 43 degrees Celsius
- Roxas City, Capiz – 43 degrees Celsius
- Iloilo City, Iloilo – 43 degrees Celsius
- La Granja, La Carlota, Negros Occidental – 42 degrees Celsius
- Dumangas, Iloilo – 42 degrees Celsius
- Daet, Camarines Norte – 42 degrees Celsius
- Baler (Radar), Aurora – 42 degrees Celsius
- Casiguran, Aurora – 42 degrees Celsius
- Barangay Ambulong in Tanauan, Batangas – 42 degrees Celsius
- Alabat, Quezon – 42 degrees Celsius
- Isabela State University in Echague, Isabela – 42 degrees Celsius
- Iba, Zambales – 42 degrees Celsius
- Catbalogan, Samar – 42 degrees Celsius
- Catarman, Northern Samar – 42 degrees Celsius
- Tacloban City, Leyte – 42 degrees Celsius
The heat index is the human discomfort index that gives the "apparent" temperature, or what humans perceive or feel as the temperature affecting their body.
The effect-based danger classification ranges from 42°C to 51°C, and its effects on the body are that heat cramps and exhaustion are likely, and heat stroke is probable with continued exposure.
Symptoms of heat-related illnesses include sweating heavily, exhaustion or fatigue, dizziness, blacking out, weak but fast pulse, nausea, and vomiting.
PAGASA last March 22 declared the start of the warm and dry season in the country.
