southwest monsoon

Scattered rain, thunderstorms in Metro Manila on day of Duterte’s SONA 2021

Acor Arceo

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Scattered rain, thunderstorms in Metro Manila on day of Duterte’s SONA 2021

PHILIPPINE WEATHER. Satellite image as of July 26, 2021, 7:40 am.

PAGASA

The southwest monsoon continues to affect the Philippines, especially Luzon, on Monday, July 26

As President Rodrigo Duterte delivers his sixth and final State of the Nation Address (SONA) at the Batasang Pambansa in Quezon City on Monday, July 26, scattered rain and thunderstorms are expected in Metro Manila.

The rain is still due to the southwest monsoon or hanging habagat, which continues to affect the Philippines, especially Luzon.

Here is the rainfall forecast of the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) for the country, as of 4 am on Monday:

Monsoon rain
  • Ilocos Region
  • Zambales
  • Bataan
  • Occidental Mindoro
Scattered rain showers and thunderstorms
  • Metro Manila
  • Abra
  • Benguet
  • Tarlac
  • Pampanga
  • Bulacan
  • Cavite
  • Batangas
Isolated rain showers or thunderstorms
  • rest of the Philippines

PAGASA warned that flash floods and landslides could occur during periods of moderate to heavy rain or severe thunderstorms.

In a separate outlook for the SONA issued on Sunday, July 25, the state weather bureau said the southwest monsoon “will continue to be the dominant weather system” until Friday, July 30.

“Moderate to strong southwesterly winds will prevail and Manila Bay will be moderate to rough,” PAGASA added.

No tropical cyclone is expected to form within or enter the Philippine Area of Responsibility (PAR), so far.

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PAGASA is still monitoring a tropical cyclone outside PAR, Tropical Storm Nepartak.

Nepartak was located 2,980 kilometers east northeast of extreme Northern Luzon before dawn on Monday, moving north at 20 kilometers per hour (km/h).

The tropical storm has maximum sustained winds of 75 km/h and gustiness of up to 90 km/h.

It is heading for Japan and not expected to enter PAR. (READ: FAST FACTS: Tropical cyclones, rainfall advisories)

There have been six tropical cyclones inside PAR in 2021. The latest, Typhoon Fabian (In-fa), did not make landfall in the country but enhanced the southwest monsoon the past week. Fabian was also the second tropical cyclone for July.

An average of 20 tropical cyclones form within or enter PAR each year. (READ: LIST: PAGASA’s names for tropical cyclones in 2021)

These are PAGASA’s latest available estimates per month:

2021
  • July – 1 to 3
  • August – 2 or 3
  • September – 2 or 3
  • October – 2 or 3
  • November – 2 or 3
  • December – 1 or 2
2022
  • January – 0 or 1

The rainy season has been underway since early June. – Rappler.com

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Acor Arceo

Acor Arceo is the head of copy and editorial standards at Rappler. Trained in both online and TV newsrooms, Acor ensures consistency in editorial standards across all sections and also supervises Rappler’s coverage of disasters.