Tropical Depression VONGFONG (AMBO) Final Update





Issued at: 7:00 AM PhT (23:00 GMT) Sunday, 17 May 2020
Current Status and Outlook

VONGFONG (AMBO) has weakened into a Tropical Disturbance (Low Pressure Area) while moving slowly north-northeastward across the western part of the Bashi Channel.

12-hr Outlook: TD VONGFONG (AMBO) is forecast to accelerate northeastward @ 16 km/hr and will continue to decay as it traverses the Luzon Strait and East Taiwan Sea.

*This is the Final Update on this Tropical Cyclone.

For more update, kindly refer to our Graphical Satellite Analysis released ever Monday, Tuesday and Wednesday at

Where is VONGFONG (AMBO)? As of 5:00 AM PhT today, May 17…2100 GMT. The LPA was located over the western part of the Bashi Channel (near 20.0°N 120.0°E), about 171 km west-northwest of Calayan Island, Cagayan or 215 km west-southwest of Basco, Batanes.
How strong is it?

Maximum Sustained Winds (10-min avg): 35 kph near the center…Gustiness: 50 kph.

Past Movement (06 hrs) North-Northeast @ 07 kph, towards Luzon Strait & East Taiwan Sea.
Potential Philippine Landfall Area(s) :: None
What Philippine areas will be directly affected? Heavy to Extreme Rains (50 mm to more than 100 mm expected):

>> Batanes & Babuyan Island Group – Today

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

>> None.

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

+Waves of 1 to 3 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.

12-hr Forecast Outlook Summary**

SUNDAY AFTERNOON: Continues to lose strength as it turns northeastward across the Luzon Strait…about 127 km WNW of Itbayat, Batanes [2AM May 17: 21.2°N 120.7°E @ 30kph].  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 Info > 24 hr. Rain Accumulation (across its circulation): 25 to 210 mm [Light to Heavy]

> Minimum Central Pressure: 1004 millibars (hPa)

> Size of Circulation [Convective Cloud-Based, in diameter]: 450 km (Small)

> Area of Damaging Winds (100 kph or more wind gusts): None.

Additional Information Time/Date: 5:00 AM PhT Sun May 17, 2020
Location of Center/Eye: near 20.0°N Lat 120.0°E Lon
Distance 1:  210 km WSW of Itbayat, Batanes
Distance 2: 251 km NW of Aparri, Cagayan
Distance 3: 282 km NW of  Santa Ana, Cagayan
Distance 4: 294 km S of Kaohsiung, Taiwan
Distance 5: 614 km N of Metro Manila

Information based on data collected by WeatherPhilippines Foundation, Inc. shall not be taken as official data. Weather information broadcasted and distributed by PAGASA remains as official data. WeatherPhilippines shall not be responsible for the private use and reliance of its weather information.

Issued by: David Michael V. Padua for WeatherPhilippines

Image Source: DOST-PAGASA (

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