Low pressure area brings rain as it heads for Eastern Visayas

The low pressure area (LPA) inside the Philippine Area of Responsibility (PAR) is bringing heavy rain to parts of the Visayas and Mindanao on Thursday, September 16.

The Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) said in an advisory issued at 11 am on Thursday that the LPA was located 255 kilometers southeast of Guiuan, Eastern Samar, or 230 kilometers east of Surigao City, Surigao del Norte.

PAGASA added that the LPA is "less likely" to develop into a tropical depression in the next 24 hours, but it is moving west northwest toward Eastern Visayas.

Here is the weather bureau's updated rainfall forecast for the LPA on Thursday:

Moderate to heavy rain
  • Eastern Samar
  • Samar
  • Northern Samar
  • Dinagat Islands
Light to moderate rain, with at times heavy rain
  • rest of Visayas
  • Zamboanga Peninsula
  • Bangsamoro Autonomous Region in Muslim Mindanao
  • Surigao del Norte

"Under these conditions, isolated flash flooding and rain-induced landslides are possible," PAGASA warned. (READ: FAST FACTS: Tropical cyclones, rainfall advisories)

Earlier on Thursday, the weather bureau also said the intertropical convergence zone (ITCZ) will continue to affect Palawan, the Visayas, and Mindanao.

The ITCZ is a belt near the equator where the trade winds of the Northern Hemisphere and Southern Hemisphere meet, usually causing LPAs or thunderstorms.

In other parts of the Philippines, including Metro Manila, there are isolated rain showers or localized thunderstorms on Thursday.

If the LPA becomes a tropical depression, it would be given the local name Lannie. (READ: LIST: PAGASA's names for tropical cyclones in 2021)

The Philippines has seen 11 tropical cyclones in 2021 – most recently the back-to-back Typhoon Jolina (Conson) and Typhoon Kiko (Chanthu).

PAGASA 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.