Rain goes on as Typhoon Bising moves slowly offshore

Typhoon Bising (Surigae) maintained its strength and slow pace on Monday afternoon, April 19, still affecting parts of Luzon and the Visayas due to its wide diameter.

The Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) said in its 5 pm bulletin on Monday that Bising was already 500 kilometers east of Infanta, Quezon, continuing to move north northwest slowly.

The state weather bureau earlier explained that Bising's slow movement is due to two high pressure areas – one on its left, the other on its right.

The typhoon continues to have maximum sustained winds of 195 kilometers per hour (km/h) and gustiness of up to 240 km/h, but it may eventually weaken in the coming days.

PAGASA maintained the following rainfall forecast for areas affected by Bising:

Monday, April 19

Moderate to heavy rain, with at times intense rain
  • Bicol
  • Northern Samar
  • Samar
  • Eastern Samar
  • Biliran
  • northern part of Leyte

Tuesday, April 20

Moderate to heavy rain
  • Bicol
  • Northern Samar
Light to moderate rain, with at times heavy rain
  • northern part of Aurora
  • eastern part of mainland Cagayan
  • eastern part of Isabela

Those areas must stay on alert for floods and landslides. (READ: FAST FACTS: Tropical cyclones, rainfall advisories)

Tropical cyclone wind signals also remain in place. This is the list of areas covered as of 5 pm on Monday:

Signal No. 2 (winds of 61 to 120 km/h)
  • Catanduanes
  • eastern part of Camarines Sur (Siruma, Tinambac, Lagonoy, Garchitorena, Caramoan, Goa, Tigaon, San Jose, Presentacion, Sagñay, Buhi)
  • eastern part of Albay (Tiwi, Malinao, Tabaco City, Malilipot, Santo Domingo, Bacacay, Rapu-Rapu, Legazpi City, Manito)
  • eastern and central parts of Sorsogon (Castilla, Sorsogon City, Prieto Diaz, Gubat, Barcelona, Casiguran, Juban, Magallanes, Bulan, Bulusan, Irosin, Santa Magdalena, Matnog)
  • Northern Samar
  • northern part of Samar (Santo Niño, Almagro, Tagapul-an, Calbayog City, Santa Margarita, Gandara, Matuguinao, San Jose de Buan, San Jorge, Tarangnan, Pagsanghan, Catbalogan City, Paranas, Jiabong, Motiong, Hinabangan, San Sebastian)
  • northern part of Eastern Samar (San Julian, Sulat, Taft, Can-avid, Dolores, Maslog, Oras, San Policarpo, Arteche, Jipapad)
Signal No. 1 (winds of 30 to 60 km/h)
  • eastern part of Cagayan (Lal-lo, Gattaran, Alcala, Baggao, Amulung, Solana, Iguig, Tuguegarao City, Enrile, Peñablanca, Camalaniugan, Aparri, Buguey, Santa Teresita, Gonzaga, Santa Ana)
  • Isabela
  • Quirino
  • northern and central parts of Aurora (Baler, Dipaculao, Dinalungan, Casiguran, Dilasag)
  • eastern part of Quezon (Calauag, Guinayangan, Tagkawayan, Buenavista, San Narciso, San Andres) including Polillo Islands
  • Camarines Norte
  • rest of Camarines Sur
  • rest of Albay
  • rest of Sorsogon
  • Masbate including Burias and Ticao Islands
  • rest of Samar
  • rest of Eastern Samar
  • Biliran
  • Leyte
  • northern part of Cebu (Tabogon, Borbon, San Remigio, Bogo City, Medellin, Daanbantayan) including Bantayan and Camotes Islands

PAGASA said tropical cyclone winds that are "at least strong breeze to near gale in strength extend outward up to 440 kilometers" from Bising's center.

"Destructive typhoon-force winds," meanwhile, "extend outward up to 110 kilometers" from the center.

Bising also continues to enhance the northeasterly wind flow, which is bringing strong breeze to near-gale conditions to the following areas:

  • most of Northern Luzon
  • Aurora
  • remaining parts of Quezon that are not under any tropical cyclone wind signal

PAGASA said Bising is likely to keep moving north or north northwest until Wednesday evening, April 21, or early Thursday morning, April 22. After that, the typhoon would head northeast or east northeast, moving away from Luzon without making landfall.

Bising might leave the Philippine Area of Responsibility (PAR) on Saturday, April 24, or Sunday, April 25.

Forecast track of Typhoon Bising (Surigae) as of April 19, 2021, 5 pm.

Image from PAGASA

For now, Bising and the enhanced northeasterly wind flow are still affecting coastal waters.

Travel is risky for all types of vessels in the following seaboards:

Very rough to very high seas (waves 5 to 12 meters high)
  • eastern seaboard of Luzon
Rough to very high seas (waves 2.5 to 7 meters high)
  • northern and eastern seaboards of Eastern Visayas

Small vessels would be at risk in these seaboards and "mariners without the proper experience should immediately seek safe harbor":

Rough to very rough seas (waves 2.5 to 4.5 meters high)
  • northern and western seaboards of Northern Luzon
  • eastern seaboard of Caraga
Rough seas (waves 2.5 to 4 meters high)
  • remaining seaboards of localities under tropical cyclone wind signals
  • eastern seaboard of Davao Oriental

Small vessels and inexperienced mariners should avoid sailing here:

Moderate to rough seas (waves 1.2 to 3 meters high)
  • western seaboard of Central Luzon

The Philippine Coast Guard said 3,258 passengers, drivers, and cargo helpers; 43 vessels; and 1,220 rolling cargoes had been stranded in Eastern Visayas, Bicol, Central Visayas, and Northeastern Mindanao as of 4 pm on Monday.

Bising is the Philippines' second tropical cyclone for 2021. The country usually gets an average of 20 tropical cyclones each year. (READ: LIST: PAGASA's names for tropical cyclones in 2021)

For the next 6 months, PAGASA estimates the following number of tropical cyclones inside PAR:

  • April - 0 or 1
  • May - 0 or 1
  • June - 1 or 2
  • July - 1 to 3
  • August - 2 or 3
  • September - 2 or 3

– 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.