Tropical Depression VONGFONG (AMBO) Update No. 19





Issued at: 7:00 PM PhT (11:00 GMT) Saturday, 16 May 2020
Next update: 7:00 AM PhT (23:00 GMT) Sunday, 17 May 2020
Current Status and Outlook

VONGFONG (AMBO) rapidly decaying over the Balintang Channel as it weakens into a Tropical Depression…expected to accelerate northeastward across the East Taiwan Sea. Scattered thunderstorms will continue to persist across Northern Luzon through Sunday.

24-hr Outlook: TD VONGFONG (AMBO) is forecast to move northeastward @ 24 km/hr and will degenerate into a Tropical Disturbance (LPA) through Sunday afternoon (May 17).

Where is VONGFONG (AMBO)? As of 5:00 PM PhT today, May 16…0900 GMT. The ill-defined center was located over the western part of the Balintang Channel (near 19.5°N 120.3°E), about 115 km north-northwest of Pagudpud, Ilocos Norte or 215 km southwest of Itbayat, Batanes.
How strong is it?

Maximum Sustained Winds (10-min avg): 45 kph near the center…Gustiness: 65 kph.

Past Movement (06 hrs) North to North-Northeast @ 26 kph, towards Bashi Channel & 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):

>> Some areas of Northern Luzon – 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.

1-Day Forecast Outlook Summary**

SUNDAY AFTERNOON: Weakens into a Tropical Disturbance (LPA) while moving northeastward across the East Taiwan Sea…about 219 km ENE of Taitung, Taiwan [2PM May 17: 23.2°N 123.2°E @ 35kph].  Confidence Level: MEDIUM.

**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 300 mm [Light to Heavy]

> Minimum Central Pressure: 1002 millibars (hPa)

> Size of Circulation [Convective Cloud-Based, in diameter]: 640 km (Small)

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

Additional Information Time/Date: 5:00 PM PhT Sat May 16, 2020
Location of Center/Eye: near 19.5°N Lat 120.3°E Lon
Distance 1:  148 km NNW of Laoag City, Ilocos Norte
Distance 2: 190 km NW of Aparri, Cagayan
Distance 3: 226 km WNW of  Santa Ana, Cagayan
Distance 4: 258 km NW of Tuguegarao City, Cagayan
Distance 5: 554 km N of Metro Manila
24 hr. Forecast Coordinates (Class): 23.2°N 123.2°E (LPA)

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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