APRIL 30 HEAT INDEX UPDATE – DOST-PAGASA reveals that thirty-four (34) areas in the Philippines have a heat index classified as ‘Dangerous’ in its effects. With apparent temperatures ranging from 42-51°C, heat cramps and heat exhaustion are likely in these areas.

What is Heat Index Today – April 30, 2024

• NAIA Pasay City, Metro Manila – 45°C
• Science Garden Quezon City, Metro Manila – 42°C
• Laoag City, Ilocos Norte – 45°C
• Dagupan City, Pangasinan – 48°C
• MMSU, Batac, Ilocos Norte –  43°C
• Bacnotan, La Union – 42°C
• Calayan, Cagayan –  42°C
• Aparri, Cagayan – 47°C
• Tuguegarao City, Cagayan – 44°C
• ISU, Echague, Isabela – 42°C
• Iba, Zambales – 43°C
• Baler (Radar), Aurora – 42°C
• Casiguran, Aurora – 44°C
• Cubi Pt., Subic Bay Olongapo City – 42°C
• Sangley Point, Cavite – 43°C
• Alabat, Quezon –  43°C
• Coron, Palawan – 43°C
• San Jose, Occidental Mindoro – 43°C
• Puerto Princesa City, Palawan – 46°C
• Aborlan, Palawan – 43°C
• Daet, Camarines Sur – 44°C 
• Legazpi City, Albay – 46°C

Also Read: 36 Areas Hit ‘Dangerous’ Heat Index

• Virac (Synop), Catanduanes – 46°C 
• Masbate City, Masbate – 46°C
• CBSUA-Pili, Camarines Sur – 47°C
• Roxas City, Capiz – 44°C
• Mambusao, Capiz – 42°C
• Iloilo City, Iloilo – 45°C
• Dumangas, Iloilo – 44°C
• La Granja, La Carlota, Negros Occidental – 43°C 
• Siquijor, Siquijor – 42°C
• Catarman, Northern Samar – 44°C
• Catbalogan, Samar – 42°C
• Tacloban City, Leyte – 47°C
• Dipolog, Zamboanga Del Norte – 42°C

Moreover, heat stroke is probable in these areas with continued exposure.

Meanwhile, below is the effect-based classification of Heat indices among different parts of the country as projected by the Impact Assessment and Applications Section (IAAS). Climatology and Agrometeorology Division (CAD), DOST-PAGASA.

Yellow Warning 27-32°C: Caution

Fatigue is possible with prolonged exposure and activity. Continuing activity could lead to heat cramps.

Yellow Orange Warning 33-41°C: Extreme Caution

Heat cramps and heat exhaustion are possible. Continuing activity could lead to heat stroke.

Orange Warning 42-51°C: Danger

Heat cramps and heat exhaustion are likely; heat stroke is probable with continued exposure.

Red Warning 52°C: Extreme Danger

Heat stroke is imminent.

Meanwhile, PAGASA advises the public to take precautions due to the elevated heat index. According to Solis, spokesperson for PAGASA, individuals are encouraged to stay hydrated by drinking plenty of water and to minimize outdoor activities, particularly from 10 a.m. to 4 p.m., when temperatures are at their peak. Solis also emphasizes avoiding beverages such as tea, soda, and alcohol, as they can exacerbate dehydration.

Sources: (1), (2)

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