tropical cyclones in PH

Severe Tropical Storm Maring bringing torrential rain to Northern Luzon

Acor Arceo
Severe Tropical Storm Maring bringing torrential rain to Northern Luzon

MARING. Satellite image of Severe Tropical Storm Maring (Kompasu) as of October 11, 2021, 2 pm.


Severe Tropical Storm Maring (Kompasu) could pass very close to the Babuyan Islands as early as Monday afternoon, October 11, but landfall in mainland northern Cagayan remains a possibility

Torrential rain from Severe Tropical Storm Maring (Kompasu) is expected in Northern Luzon on Monday, October 11, with the tropical cyclone nearing the Babuyan Islands.

In its 2 pm bulletin on Monday, the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) said Maring was just 150 kilometers east northeast of Aparri, Cagayan, or 170 kilometers east southeast of Calayan, Cagayan.

The severe tropical storm continues to move west, accelerating from 15 km/h to 20 km/h.

It still has maximum sustained winds of 95 km/h and gustiness of up to 115 km/h. (READ: FAST FACTS: Tropical cyclones, rainfall advisories)

With Maring slightly speeding up, it could already pass very close to or over the Babuyan Islands between Monday afternoon and evening.

But PAGASA is still not ruling out landfall in mainland northern Cagayan or a close approach to Batanes.

The weather bureau updated its rainfall forecast at 2 pm on Monday, warning that rain could become torrential in parts of Northern Luzon. Flash floods and landslides are “highly likely,” warned PAGASA.

Heavy to intense rain, with at times torrential rain
  • Batanes
  • northern part of mainland Cagayan including Babuyan Islands
  • Ilocos Norte
  • Ilocos Sur
  • Apayao
  • Abra
  • Mountain Province
  • Benguet
Moderate to heavy rain, with at times intense rain
  • rest of mainland Cagayan
  • rest of Ilocos Region
  • rest of Cordillera Administrative Region
Light to moderate rain, with at times heavy rain
  • rest of Cagayan Valley
  • Central Luzon

Aside from Maring, the southwest monsoon or hanging habagat continues to affect parts of the country. The severe tropical storm is enhancing the southwest monsoon.

Monsoon rain
  • Visayas
  • Zamboanga Peninsula
  • Palawan
  • Occidental Mindoro
  • Oriental Mindoro

The list of areas under tropical cyclone wind signals remained unchanged as of 2 pm.

Signal No. 2 (damaging gale-force to storm-force winds)
  • Batanes
  • Cagayan including Babuyan Islands
  • northern part of Isabela (Palanan, Divilacan, Maconacon, Ilagan City, Tumauini, Cabagan, San Pablo, Santa Maria, Santo Tomas, Delfin Albano, Quirino, Gamu, Roxas, Mallig, Quezon)
  • Apayao
  • Kalinga
  • Mountain Province
  • Abra
  • Ilocos Norte
  • Ilocos Sur
Signal No. 1 (strong winds)
  • rest of Isabela
  • Nueva Vizcaya
  • Quirino
  • Ifugao
  • Benguet
  • La Union
  • Pangasinan
  • Aurora
  • Nueva Ecija
  • Tarlac
  • Zambales
  • Pampanga
  • Bulacan
  • northern part of Bataan (Samal, Morong, Dinalupihan, Abucay, Orani, Hermosa)
  • northern part of Quezon (General Nakar, Infanta) including Polillo Islands
  • Calaguas Islands

Occasional gusts remain possible in island, coastal, and mountainous areas of most places in the country due to Maring’s “expansive wind field” and the enhanced southwest monsoon.

  • rest of Luzon
  • Visayas
  • Dinagat Islands
  • Surigao del Norte
  • Agusan del Norte
  • Misamis Oriental
  • Misamis Occidental
  • Camiguin
  • Zamboanga del Norte

PAGASA also warned that there is a “minimal to moderate risk” of life-threatening storm surges up to 1 meter high in the next 24 hours.

“Rising seawater along with the high waves from the shoreline moving inland may cause flooding in the low-lying coastal localities of Cagayan, including Babuyan Islands, and Ilocos Norte,” the weather bureau said.

Sea travel remains dangerous.

Rough to high seas

Conditions risky for all vessels

  • seaboards of areas under Signal Nos. 1 and 2 (waves 2.5 to 7.5 meters high)
Rough to very rough seas

Small vessels advised not to sail, larger vessels alerted against big waves

  • seaboards of Southern Luzon and Western Visayas (waves 2.8 to 4.5 meters high)
  • western seaboard of Central Luzon not under a tropical cyclone wind signal (waves 2.8 to 4.5 meters high)
Moderate to rough seas

Conditions risky for small vessels

  • remaining seaboards of Luzon and Visayas (waves 1.2 to 2.8 meters high)
  • northern, eastern, and western seaboards of Mindanao (waves 1.2 to 2.8 meters high)

Maring is seen to exit the Philippine Area of Responsibility (PAR) on Tuesday morning, October 12.

Outside PAR, it could intensify into a typhoon on Tuesday afternoon or evening.

It may make landfall in the Chinese island province of Hainan on Wednesday morning or afternoon, October 13, and then start weakening.

PROJECTED PATH. Forecast track of Severe Tropical Storm Maring (Kompasu) as of October 11, 2021, 2 pm.

Maring is the Philippines’ 13th tropical cyclone for 2021 and the second for October.

On Sunday morning, October 10, Maring had completed its merger with the remnant low that was formerly Tropical Depression Nando. The two tropical cyclones had interacted over the Philippine Sea, resulting in the merger.

Nando, the Philippines’ 14th tropical cyclone for 2021, had no impact on weather in the country.

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 estimates for the next six months:

  • October – 2 or 3
  • November – 2 or 3
  • December – 1 or 2
  • January – 0 or 1
  • February – 0 or 1
  • March – 0 or 1

The weather bureau is also monitoring the possible emergence of La Niña in the fourth quarter of 2021. –

Acor Arceo

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