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TYPHOON “BISING” SLIGHTLY ACCELERATES AND INTENSIFIES AS IT MOVES WEST-NORTHWESTWARD OVER THE PHILIPPINE SEA

DOST – PAGASA Issued at 05:00 pm, 17 April 2021

Tropical Cyclone: WARNING

(Valid for broadcast until the next advisory to be issued at 5 AM tomorrow)
TYPHOON “BISING” SLIGHTLY ACCELERATES AND INTENSIFIES AS IT MOVES WEST-NORTHWESTWARD OVER THE PHILIPPINE SEA.
  • Hazards affecting land areas
  • Heavy Rainfall:
  • Tomorrow (18 April), the rainbands of Typhoon “BISING” will bring moderate to heavy with at times intense rains over Eastern Visayas, Bicol Region, and the southern portion of Quezon.
  • By Monday (19 April), moderate to heavy with at times intense rains over Northern Samar, Bicol Region, and the southern portion of Quezon.
  • Under these conditions, flooding (including flashfloods) and rain-induced landslides may occur especially in areas identified in hazard maps as highly or very highly susceptible to these hazards.
  • Severe Winds:
  • Tropical cyclone winds of at least strong breeze to near gale in strength extend outward up to 400 km from the center of the typhoon. Gale-force winds extend outward up to 300 km from the center of the typhoon. Destructive typhoon-force winds extend outward up to 90 km from the center of the typhoon.
  • Hazards affecting coastal waters
  • In the next 24 hours, rough to high seas (3.0 to 10.0 m) will be experienced over the eastern seaboards of Luzon and areas where TCWS is in effect while rough to very rough seas (2.8 to 4.5 m) over the remaining seaboards of Northern Luzon and the eastern seaboards of Mindanao (that are not under TCWS). Sea travel is risky for all types of seacrafts over these waters, especially those under TCWS.
  • Track and Intensity Outlook
  • Typhoon “BISING” will move northwestward over the Philippine Sea until tomorrow afternoon. Afterwards, the typhoon will slow down and move generally northward until Tuesday (20 April) afternoon before moving generally northward or north-northwestward over the Philippine Sea east of Northern and Central Luzon.
  • Considering the uncertainty in the track forecast of typhoon “BISING”, a westward shift in the current forecast track may result in potentially significant impacts over the eastern portions of Southern Luzon and Visayas.
  • “BISING” is forecast to further intensify and reach its peak intensity (up to 205 km/h) tomorrow.

Location of Eye/center

At 4:00 PM today, the center of the eye of Typhoon “BISING” was located based on all available data at 460 km East of Guiuan, Eastern Samar (11.6 °N, 129.9 °E )

Movement

Moving West Northwestward at 25 km/h

Strength

Maximum sustained winds of 195 km/h near the center and gustiness of up to 240 km/h

Forecast Position

  • 24 Hour(Tomorrow afternoon): 300 km East of Virac, Catanduanes(13.5°N, 127.0°E)
  • 48 Hour(Monday afternoon):555 km East of Infanta, Quezon( 15.0°N, 126.8°E)
  • 72 Hour(Tuesday afternoon): 490 km East of Casiguran, Aurora( 16.7°N, 126.7°E)
  • 96 Hour(Wednesday afternoon):515 km East of Aparri, Cagayan( 18.6°N, 126.5°E)
  • 120 Hour(Thursday afternoon):555 km East of Basco, Batanes( 20.5°N, 127.3°E)

Wind Signal (Areas with TCWS)

Tropical Cyclone Wind Signal no. 2

AFFECTED AREAS

  • Luzon
    • Catanduanes
  • Visayas
    • Northern Samar, Eastern Samar, and Samar
  • Mindanao
    • –

Meteorological Condition

  • A tropical cyclone will affect the the locality.
  • Winds of greater than 61 km/h and up to 120 km/h may be expected in at least 24 hours.

Impact of the Wind

  • Light to Moderate damage to high risk structures.
  • Very light to light damage to medium-risk structures.
  • No damage to very light damage to low risk structures.
  • Unshielded, old dilapidated schoolhouses, makeshift shanties, and other structures of light materials are partially damaged or unroofed.
  • A number of nipa and cogon houses may be partially or totally unroofed.
  • Some old galvanized iron (G.I.) roofs may be peeled or blown off.
  • Some wooden, old electric posts are tilted or downed.
  • Some damage to poorly constructed signs/billboards.
  • In general, the winds may bring light to moderate damage to the exposed communities. Most banana plants, a few mango trees, ipil-ipil and similar types of trees are downed or broken.
  • Some coconut trees may be tilted with few others broken.
  • Rice and corn may be adversely affected.
  • Considerable damage to shrubbery and trees with some heavy-foliaged trees blown down.

Precautionary Measures

  • The sea and coastal waters are dangerous to small seacrafts
  • Special attention should be given to the latest position, the direction and speed of movement and the intensity of the storm as it may intensify and move towards the locality.
  • The general public especially people travelling by sea and air are cautioned to avoid unnecessary risks.
  • Outdoor activities of children should be postponed.
  • Secure properties before the signal is upgraded.
  • Disaster preparedness agencies / organizations are in action to alert their communities.

What To Do

  • Prepare flashlights, batteries , matches, kerosene lamps, or candles and charcoal in anticipation of power failure, first aid kit and store ready to eat foods.
  • Keep your cell phones fully charged.
  • Elevate household things in case of flooding.
  • For fishing folks, secure fishing boats in safe area.

Tropical Cyclone Wind Signal no. 1

AFFECTED AREAS

  • Luzon
    • Sorsogon, Albay, the eastern portion of Camarines Sur (Calabanga, Naga City, Pili, Bula, Bombon, Magarao, Canaman, Gainza, Camaligan, Milaor, Minalabac, Tinambac, Siruma, Lagonoy, Goa, Tigaon, Ocampo, Baao, Iriga City, Nabua, Balatan, Bato, Buhi, Sagnay, San Jose, Garchitorena, Presentacion, Caramoan, San Fernando), and the eastern portion of Masbate (Baleno, Masbate City, Mobo, Uson, Dimasalang, Palanas, Cataingan, Pio V. Corpuz) including Ticao Island
  • Visayas
    • Biliran, Leyte, Southern Leyte, and Camotes Islands
  • Mindanao
    • Dinagat Islands, Surigao del Norte (including Siargao and Bucas Grande Islands), and Surigao del Sur

Meteorological Condition

  • A tropical cyclone will affect the locality.
  • Winds of 30-60 km/h may be expected in at least 36 hours or intermittent rains may be expected within 36 hours. (When the tropical cyclone develops very close to the locality a shorter lead time of the occurrence of the winds will be specified in the warning bulletin.)

Impact of the Wind

  • Very light or no damage to low risk structures.
  • Light damage to medium to high risk structures.
  • Slight damage to some houses of very light materials or makeshift structures in exposed communities. Some banana plants are tilted, a few downed and leaves are generally damaged.
  • Twigs of small trees may be broken.
  • Rice crops, however, may suffer significant damage when it is in its flowering stage.

Precautionary Measures

  • When the tropical cyclone is strong or is intensifying and is moving closer, this signal may be upgraded to the next higher level.
  • The waves on coastal waters may gradually develop and become bigger and higher.
  • The people are advised to listen to the latest severe weather bulletin issued by PAGASA every six hours. In the meantime, business may be carried out as usual except when flood occur.
  • Disaster preparedness is activated to alert status.

What To Do

  • Inspect your house if necessary repair/fixing is needed.
  • Clean up drainage system.
  • Harvest crops tha can be yielded.
  • Monitor the latest Severe Weather Bulletin issued By PAGASA every six hours and hourly updates.

SOURCE: http://bagong.pagasa.dost.gov.ph/tropical-cyclone/severe-weather-bulletin/2