Metro Manila and most parts of the Philippines will experience cloudy skies due to the easterlies, while three areas are expected to reach “danger” level heat indices on Saturday, March 15, according to the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA).
In its weather forecast, PAGASA said the easterlies will affect the country.
Cloudy skies with scattered rains and thunderstorms are expected in Eastern Samar, Leyte, Southern Leyte, Dinagat Islands, Surigao del Norte, Surigao del Sur, and Davao Oriental due to the easterlies.
Similarly, the easterlies will also bring partly cloudy to cloudy skies with isolated rain showers or thunderstorms to Metro Manila and the rest of the country.
PAGASA warned of possible flash floods or landslides due to moderate to heavy rains or severe thunderstorms.
Heat index
Meanwhile, PAGASA noted that the heat index in three areas may reach the “danger” level.
Based on PAGASA's two-day forecast as of 5 p.m. on March 14, Dagupan City in Pangasinan, Aparri in Cagayan, and Zamboanga City in Zamboanga del Sur are expected to record the highest heat index at 42 degrees Celsius (°C).
PAGASA also noted that Metro Manila and most parts of the country are under the “extreme caution” level, with the heat index expected to range between 31°C and 41°C.
The heat index refers to the apparent temperature or how hot it feels due to the combined effects of actual air temperature and humidity, according to PAGASA.
As per PAGASA’s heat index classification, areas with a heat index of 27°C to 32°C are under the “Caution” level. Individuals in these areas may experience fatigue due to prolonged exposure and activity. Continued activity could also lead to heat cramps.
Areas under “Extreme Caution” may experience heat cramps and heat exhaustion, and prolonged activity may lead to heat stroke, PAGASA said.
PAGASA also noted that areas classified under the “Danger” level may suffer from heat cramps and exhaustion, with heat stroke considered “probable” with continued exposure.
Areas with a heat index of 52°C and beyond fall under the “Extreme Danger” level, where “heat stroke is imminent,” PAGASA said.