Issued at: 7:00 PM PhT (11:00 GMT) Friday, 23 April 2021
Next update: 7:00 AM PhT (23:00 GMT) Saturday, 24 April 2021
Current Status & Outlook BISING (SURIGAE) barely a Typhoon (TY) as it tracks east-northeastward across the North Philippine Sea…expected to exit the northeastern border of the Philippine Area of Responsibility (PAR) on Sunday.

24-hr Outlook: TY BISING (SURIGAE) is forecast to move eastward at a decreased speed of 13 km/hr across the northeastern part of the North Philippine Sea. This cyclone is expected to weaken rapidly, will be downgraded into a Tropical Storm (TS) within the next 12 to 24 hours.

Where is BISING (SURIGAE)? As of 5:00 PM PhT today, April 23…0900 GMT:

  • Location of Center/Eye: Along the northern portion of the North Philippine Sea (near 23.0°N 129.4°E)
  • Distance 1: 814 km east-northeast of Basco, Batanes
  • Distance 2: 827 km east-southeast of Taipei, Taiwan
  • Distance 3: 905 km northeast of Santa Ana, Cagayan
How strong is it? Maximum Sustained Winds (1-min avg): 120 kph near the center…Gustiness: 150 kph.
Past Movement (06 hrs) East-Northeast @ 20 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.

2-Day Forecast Outlook Summary**
  • SATURDAY AFTERNOON: Weakens rapidly to a Tropical Storm (TS) as it turns eastward across the northeastern portion of the North Philippine Sea, southwest of Okinawa, Japan…about 1,068 km ENE of Basco, Batanes [2PM Apr 24: 22.9°N 132.0°E @ 85 kph].  Confidence Level: HIGH
  • SUNDAY AFTERNOON: Moves out of PAR as it nears Extratropical transition, re-intensifies while moving across the Western Pacific Ocean…about 1,632 km ENE of Basco, Batanes [2PM Apr 25: 22.8°N 137.6°E @ 95 kph].  Confidence Level: HIGH

**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 550 mm [Light to Extreme]
  • Minimum Central Pressure: 975 millibars (hPa)
  • Size of Rain Circulation (in Diameter): Medium (735 km)
  • Size of Wind Circulation (55-kph Wind Diameter): Medium (660 km)
  • Area of Damaging Winds (100 kph or more wind gusts): 160 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)


Typhoon2000 (T2K) Integrated Multi-Agency Tracks

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



None…already lowered.

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


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