Severe Tropical Storm Siony is now moving west-northwestward over the Bashi Channel and is expected to exit the country tonight.
At 1:00 PM today, the center of Severe Tropical Storm Siony was estimated based on all available data at 95 km Northwest of Itbayat, Batanes.
On the forecast track, Siony is forecast to move west-northwestward and pass over the sea off the southern coast of Taiwan within 12 hours. Siony is forecast to exit the Philippine Area of Responsibility (PAR) tonight. Afterwards, it will turn southwestward tomorrow morning over the sea to the southwest of Taiwan and move over the West Philippine Sea.
Severe Tropical Storm Siony is forecast to maintain its strength in the next 12 hours, then will significantly weaken due to increasingly unfavorable conditions associated with a surge of the northeasterly over the West Philippine Sea. It may be downgraded to a Low-Pressure Area on Sunday afternoon.
Areas under Tropical Cyclone Wind Signal #2 are currently experiencing damaging gale- to storm-force winds, while those under TCWS #1 are currently experiencing strong breeze to near gale conditions.
Severe Tropical Storm Siony to exit PAR tonight
Today, the passage of “SIONY” will bring light to moderate with at times heavy rains over Batanes and Babuyan Islands. Flooding (including flashfloods) and rain-induced landslides may occur during heavy or prolonged rainfall especially in areas identified in geohazard maps as highly or very highly susceptible to these hazards.
PAGASA Regional Services Divisions may issue local thunderstorm/rainfall advisories and heavy rainfall warnings while the Hydrometeorology Division and River Basin Flood Forecasting and Warning Centers may issue General Flood Advisories and Basin Flood Bulletins as appropriate.
In the next 24 hours, there remains a minimal to moderate risk of storm surge of up to 2.0 m over the coastal areas of Batanes and Babuyan Islands.
The Low Pressure Area outside the PAR was estimated at 1,075 km East of Mindanao. It is forecast to move generally west-northwestward or northwestward and may enter the PAR this afternoon. It is heading towards the direction of Eastern Visayas and may likely reach the area tomorrow afternoon or evening. This weather disturbance may develop into Tropical Depression “TONYO” within the next 48 hours.