tropical cyclones in PH

Tropical Depression Lannie leaves PAR; LPA to enter

Acor Arceo
Tropical Depression Lannie leaves PAR; LPA to enter

LANNIE. Satellite image of Tropical Depression Lannie as of October 6, 2021, 11:30 am.

NOAA

Tropical Depression Lannie exits the Philippine Area of Responsibility on Wednesday, October 6, after crossing parts of Mindanao, the Visayas, and Luzon over a two-day period

Tropical Depression Lannie left the Philippine Area of Responsibility at 5 am on Wednesday, October 6, only two days after it developed inside PAR.

But a low pressure area (LPA) is expected to enter PAR shortly after Lannie’s exit.

Tropical Depression Lannie

Lannie was already 770 kilometers west of Calapan City, Oriental Mindoro, or 670 kilometers west of Subic, Zambales, said the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) said in its 11 am bulletin on Wednesday.

The tropical depression slowed down a bit, moving northwest at 20 kilometers per hour from the previous 25 km/h.

It is now expected to head for the central part of Vietnam, instead of China.

Lannie maintained its strength as it left PAR, with maximum sustained winds of 45 km/h and gustiness of up to 55 km/h. (READ: FAST FACTS: Tropical cyclones, rainfall advisories)

Though the tropical depression is already outside PAR, its trough or extension may still bring rain to the following areas on Wednesday:

  • Metro Manila
  • Central Luzon
  • Southern Luzon
  • Antique
  • Aklan

PAGASA added that the enhanced northeasterly wind flow will bring occasional gusts to extreme Northern Luzon, while the enhanced southwesterlies will cause similar conditions in coastal and mountainous areas along the western parts of Central Luzon and Southern Luzon.

A gale warning also remains in effect for the seaboards of Northern Luzon and the western seaboards of Southern Luzon. Waters are rough to very rough, with waves 2.8 to 4.5 meters high.

Fishing boats and other small vessels are advised not to sail, while larger vessels should watch out for big waves, said PAGASA.

In the remaining western seaboards of Luzon and in the eastern seaboard of the Philippines, moderate to rough seas will persist. Travel is risky for small vessels.

Lannie, the Philippines’ 12th tropical cyclone for 2021, made landfall 10 times. It crossed parts of Mindanao, the Visayas, and Luzon as the filing of certificates of candidacy for the 2022 elections continued, but did not cause massive disruption.

The tropical depression made landfall in these areas:

Monday, October 4

  • Bucas Grande Island, Socorro, Surigao del Norte – 4:30 am
  • Cagdianao, Dinagat Islands – 5 am
  • Liloan, Southern Leyte – 7:30 am
  • Padre Burgos, Southern Leyte – 8 am
  • Mahanay Island, Talibon, Bohol – 12:30 pm
  • Banacon Island, Jetafe, Bohol – 12:45 pm
  • San Fernando, Cebu – 1:45 pm
  • Guihulngan City, Negros Oriental – 3:30 pm

Tuesday, October 5

  • Iloc Island, Linapacan, Palawan – 6:15 am
  • El Nido, Palawan – 6:45 am
PROJECTED PATH. Forecast track of Tropical Depression Lannie as of October 6, 2021, 11 am.
PAGASA
Low pressure area

Meanwhile, the LPA being monitored by PAGASA is expected to enter on Wednesday.

Earlier, before dawn, the LPA was located 1,525 kilometers east of the Visayas.

It may develop into a tropical depression inside PAR, and would be given the local name Maring. Updates on the LPA are expected in succeeding bulletins.

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:

2021
  • October – 2 or 3
  • November – 2 or 3
  • December – 1 or 2
2022
  • 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. – Rappler.com

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.