TYPHOON BISING (SURIGAE) ADVISORY NO. 15

Issued at: 7:00 AM PhT (23:00 GMT) Friday, 23 April 2021
Next update: 7:00 PM PhT (11:00 GMT) Friday, 23 April 2021
Current Status & Outlook Typhoon BISING (SURIGAE) racing towards the northeast across the North Philippine Sea…continues to decay…likely to exit the northeastern border of the Philippine Area of Responsibility (PAR) on Sunday (Apr 25). 

The typhoon’s westernmost rainbands are no longer affecting any parts of the Philippines.

24-hr Outlook: TY BISING (SURIGAE) is forecast to move east-northeastward at a speed of 17 km/hr across the northern part of the North Philippine Sea. This cyclone is expected to weaken rapidly, will be downgraded into a Severe Tropical Storm (STS) within the next 12 to 24 hours.

Where is BISING (SURIGAE)? As of 5:00 AM PhT today, April 23…2100 GMT:

  • Location of Center/Eye: Along the northwestern portion of the Central Philippine Sea (near 22.1°N 127.3°E)
  • Distance 1: 578 km east-northeast of Basco, Batanes
  • Distance 2: 640 km east of Taitung, Taiwan
  • Distance 3: 671 km northeast of Santa Ana, Cagayan
How strong is it? Maximum Sustained Winds (1-min avg): 150 kph near the center…Gustiness: 185 kph.
Past Movement (06 hrs) Northeast @ 21 kph, across the Philippine Sea
Potential Philippine Landfall Area(s)
  • None.
What Philippine areas will be directly affected? Heavy to Extreme Rainfall (50 mm to >100 mm expected for 24 hrs):

  • None.

Damaging Winds (gusts of more than 100 km/hr expected):

  • None. 
Potential Storm Surge/Coastal Flooding Areas+
  • None.

+Waves of 2 to 6 meters in height is expected in storm surge-prone areas, particularly in coastal areas on where the Tropical Cyclone is headedKindly visit the PAGASA Storm Surge Updates  for more details.

3-Day Forecast Outlook Summary**
  • SATURDAY EARLY MORNING: Weakens rapidly to a Severe Tropical Storm (STS) as it moves ENE-ward across the northern portion of the North Philippine Sea, southwest of Okinawa, Japan…about 924 km E of Taipei, Taiwan [2AM Apr 24: 23.4°N 130.5°E @ 100 kph].  Confidence Level: MEDIUM
  • SUNDAY EARLY MORNING: Maintains its weakening trend, just a Tropical Storm (TS) as it rapidly moves ESE to Eastward across the easternmost portion of the North Philippine Sea. Just about to exit the NE border of PAR…about 1,270 km E of Basco, Batanes [2AM Apr 25: 21.3°N 134.2°E @ 75 kph].  Confidence Level: MEDIUM
  • MONDAY EARLY MORNING: Begins Extratropical Transition while outside of PAR, as it speeds up ENE-ward across the Western Pacific Ocean, NNE of the Northern Marianas…about 2,052 km E of Basco, Batanes [2AM Apr 26: 23.0°N 141.7°E @ 75 kph].  Confidence Level: LOW

**Important Note: Please be reminded that the Forecast Outlook changes every 6 hours, and the Day 2 and 3 Forecast Track have an average error of 100 and 250 km respectively… while the wind speed forecast error, averages 35 km/hr per day. Therefore, a turn to the left or right of its future track and changes in its wind speed must be anticipated from time to time.

Other Storm’s Meteorological Information
  • 24-hr. Rain Accumulation (across its circulation): 25 to 520 mm [Light to Extreme]
  • Minimum Central Pressure: 965 millibars (hPa)
  • Size of Rain Circulation (in Diameter): Medium (670 km)
  • Size of Wind Circulation (55-kph Wind Diameter): Medium (660 km)
  • Area of Damaging Winds (100 kph or more wind gusts): 120 km from the center.
Information based on data collected by Typhoon2000 (T2k) shall not be taken as official data. Weather information broadcasted and distributed by PAGASA remains as official data. Typhoon2000 (T2k) shall not be responsible for the private use and reliance of its weather information.

Issued by: David Michael V. Padua for Typhoon2000 (T2K)

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Typhoon2000 (T2K) Integrated Multi-Agency Tracks

For more info: http://www.typhoon2000.ph/multi/?name=SURIGAE

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PAGASA TROPICAL CYCLONE WIND SIGNAL

None…already lowered.

Image/Screenshot Source: DOST-PAGASA (https://pubfiles.pagasa.dost.gov.ph/tamss/weather/signals_bising.png)

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