Issued at: 7:00 PM PhT (11:00 GMT) Tuesday, 20 April 2021
Next update: 7:00 AM PhT (23:00 GMT) Wednesday, 21 April 2021
Current Status & Outlook Typhoon BISING (SURIGAE) with its large ragged “eye” continues to move slowly north-northwestward across the Central Philippine Sea, farther away from Catanduanes. 

This typhoon will continue to bring overcast skies with “on-&-off” rains, severe thunderstorms and gusty winds across the eastern sections of Northern Luzon and Catanduanes.  Meanwhile, its Trough will also bring cloudy skies with isolated to scattered rain showers and thunderstorms across portions of Eastern & Central Luzon including Metro Manila, Visayas, &  MiMaRoPa.

24-hr Outlook: TY BISING (SURIGAE) is forecast to continue moving north-northwestward at an increased speed of 12 km/hr across the northwestern part of the Central Philippine Sea. This cyclone is expected to weaken into a Category 3 TY within the next 12 to 24 hours.

Where is BISING (SURIGAE)? As of 5:00 PM PhT today, April 20…0900 GMT:

  • Location of Center/Eye: Along the northwestern portion of the Central Philippine Sea (near 16.2°N 125.9°E)
  • Distance 1: 304 km northeast of Pandan, Catanduanes
  • Distance 2: 345 km northeast of Caramoan, Camarines Sur
  • Distance 3: 410 km east of Casiguran, Aurora
How strong is it? Maximum Sustained Winds (1-min avg): 215 kph near the center…Gustiness: 260 kph.
Past Movement (06 hrs) North @ 10 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+
  • Coastal Areas of Batanes, Cagayan, Aurora, Northern Quezon, & Bicol Region – Today.

+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**
  • WEDNESDAY AFTERNOON: Weakens to a Category 3 Typhoon (TY) as it moves slowly NNW-ward towards the southwestern portion of the North Philippine Sea, E of Northern Cagayan…about 260 km E of Santa Ana, Cagayan [2PM Apr 21: 18.2°N 124.6°E @ 205 kph].  Confidence Level: HIGH
  • THURSDAY AFTERNOON: Weakens further to a Category 2 TY as it turns northward well to the east of Batanes Group of Islands…about 276 km E of Basco, Batanes [2PM Apr 22: 20.0°N 124.6°E @ 175 kph].  Confidence Level: HIGH
  • FRIDAY AFTERNOON: Recurves & accelerates  toward the NE & ENE across the North Philippine Sea…just a Category 1 TY…about 677 km ENE of Basco, Batanes [2PM Apr 23: 22.1°N 128.3°E @ 150 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 825 mm [Light to Extreme]
  • Minimum Central Pressure: 935 millibars (hPa)
  • Size of Rain Circulation (in Diameter): Medium (690 km)
  • Size of Wind Circulation (55-kph Wind Diameter): Medium (770 km)
  • Area of Damaging Winds (100 kph or more wind gusts): 185 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



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


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