Severe Tropical Storm Siony update: At 10:00 AM today, the center of Severe Tropical Storm Siony was estimated based on all available data at 475 km East of Basco, Batanes.
Siony maintains its strength while moving westward towards Luzon Strait, Pagasa’s recent weather bulletin said.
Siony will accelerate westward or west-northwestward in the next 48 hours. On the forecast track, the center of Siony will likely pass over (landfall) or near (close approach) the Batanes or Babuyan Islands’ vicinity tomorrow morning. After leaving the Philippine Area of Responsibility on Friday afternoon or evening, this tropical cyclone is forecast to turn towards the southwest on Saturday morning and accelerate over the West Philippine Sea towards the general direction of central or southern Vietnam.
Siony is forecast to reach typhoon category with a peak intensity of 120 km/h by tomorrow morning as it passes near or over the Batanes-Babuyan Islands area. After exiting the PAR, Siony will gradually weaken due to increasingly unfavorable conditions over the West Philippine Sea associated with a northeasterly surge.
Strong breeze to near gale conditions due to the prevailing northeasterlies will continue over Batanes, Babuyan Islands, the northern portion of Ilocos Norte, and the northern and eastern coastal areas of mainland Cagayan until the arrival of tropical cyclone winds.
Based on all available meteorological data, the earliest onset of strong breeze to near gale conditions associated with Siony over the areas currently under Tropical Cyclone Wind Signal (TCWS) #2 and #1 will be between tonight and tomorrow early morning.
Severe Tropical Storm Siony update
Damaging gale- to storm-force winds will begin to affect areas under TCWS #2 tomorrow morning. Based on the intensity outlook for Siony, TCWS #3 remains to be the highest wind signal to be hoisted during the passage.
In the next 24 hours, the trough of “SIONY” will bring scattered light to moderate with at times heavy rain showers over Pangasinan and most parts of Central Luzon, Metro Manila, CALABARZON, MIMAROPA, Bicol Region, Visayas, and Mindanao. Moderate to heavy rains due to “SIONY” will begin affecting Batanes and the Babuyan Islands tomorrow early morning.
Siony update Tropical Cyclone Wind Signal
Signal No. 1- Batanes and Babuyan Islands
Signal No. 2 -The northern portion of mainland Cagayan (Santa Ana, Gonzaga, Lal-Lo, Allacapan, Santa Teresita, Buguey, Camalaniugan, Aparri, Ballesteros, Abulug, Pamplona, Sanchez-Mira, Claveria, Santa Praxedes), the northern portion of Apayao (Santa Marcela, Luna, Calanasan), and the northern portion of Ilocos Norte (Adams, Pagudpud, Bangui, Dumalneg, Burgos, Vintar, Pasuquin, Bacarra)