Philippine tropical cyclones

Tropical Storm Siony joins Typhoon Rolly in PAR

Acor Arceo

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Tropical Storm Siony joins Typhoon Rolly in PAR

Screenshot from PAGASA video

Tropical Storm Siony (Atsani) is the Philippines' 19th tropical cyclone for 2020. It comes as Typhoon Rolly (Goni) hits Luzon.

With Luzon still being battered by Typhoon Rolly (Goni), another tropical cyclone entered the Philippine Area of Responsibility (PAR) on Sunday, November 1.

The Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) said in a bulletin released past noon on Sunday that the tropical storm with the international name Atsani entered PAR at 8 am.

It was given the local name Siony, as the Philippines’ 19th tropical cyclone for 2020. (READ: LIST: PAGASA’s names for tropical cyclones in 2020)

Siony is located 1,365 kilometers east of Central Luzon, moving west northwest at a relatively fast 30 kilometers per hour (km/h).

At the moment, the tropical storm has maximum sustained winds of 75 km/h and gustiness of up to 90 km/h. (READ: FAST FACTS: Tropical cyclones, rainfall advisories)

Fortunately, Siony “remains less likely to affect any portion of the country over the next 2 to 3 days,” according to PAGASA.

There are currently no tropical cyclone wind signals raised due to Siony and no rainfall warnings.

More detailed forecasts on Siony are expected in the coming days.

Forecast track of Tropical Storm Siony (Atsani) as of November 1, 2020, 11 am.
Image from PAGASA

An average of 20 tropical cyclones form within or enter PAR each year.

These are PAGASA’s latest estimates for the number of tropical cyclones inside PAR in the next 6 months:

  • November 2020 – 1 to 3
  • December 2020 – 2 or 3
  • January 2021 – 0 or 1
  • February 2021 – 0 or 1
  • March 2021 – 0 or 1
  • April 2021 – 0 or 1

Last October 2, the state weather bureau warned Filipinos to expect more rain in the coming months due to the onset of La Niña–

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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.