Severe Tropical Storm SIONY (ATSANI) Advisory No. 06

Severe Tropical Storm SIONY (ATSANI) Advisory No. 06

SEVERE TROPICAL STORM SIONY (ATSANI) ADVISORY NO. 06 Issued at: 7:00 AM PhT (23:00 GMT) Thursday, 05 November 2020 Next update: 7:00 PM PhT (11:00 GMT) Thursday, 05 November 2020
Current Status & Outlook	Severe Tropical Storm SIONY (ATSANI) has started moving west towards Extreme Northern Luzon…threatens Batanes-Babuyan Group of Islands. It should pass over or very close to Basco-Itbayat Area on or before noontime tomorrow. 24-hr Outlook: STS SIONY (ATSANI) is forecast to begin accelerating westward at an increased forward speed of 19 km/hr later today, and could become a minimal Typhoon (Category 1) by early tomorrow morning (Nov 06), before passing over or very close to Batanes Group.
Where is SIONY (ATSANI)?	As of 5:00 AM PhT today, November 05…2100 GMT: Location of Center/Eye: Over the mid-southern portion of the North Philippine Sea  (near 20.0°N 127.8°E) Distance 1: 614 km east of Basco, Batanes Distance 2: 612 km east-northeast of Santa Ana, Cagayan Distance 3: 673 km east-northeast of Aparri, Cagayan
How strong is it?	Maximum Sustained Winds (1-min avg): 95 kph near the center…Gustiness: 120 kph.
Past Movement (06 hrs)	West @ 11 kph, towards Batanes-Babuyan Island Group
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): BATANES & BABUYAN ISLAND GROUP – beginning Friday Early Morning (Nov 06). Damaging Winds (gusts of more than 100 km/hr expected): BATANES – beginning Friday Early Morning (1 AM) until Early Afternoon (2 PM).
Potential Storm Surge/Coastal Flooding Areas+	Coastal Waters of Extreme Northern Luzon – Today through Friday. +Waves of 3 meters in height is expected in storm surge-prone areas, particularly in coastal areas on where the Tropical Cyclone is headed. Kindly visit the PAGASA Storm Surge Updates  for more details.
2-Day Forecast Outlook Summary**	FRIDAY EARLY MORNING: Approaching the coastal waters of Batanes-Babuyan Island Group as a Category 1 Typhoon…about 163 km E of Basc0, Batanes [2AM Nov 06: 20.3°N 123.5°E @ 120 kph].  Confidence Level: HIGH  SATURDAY EARLY MORNING: Strenghens further as it exits the northwestern border of the Philippine Area of Responsibility (PAR), while moving on a WNW track…about 256 km W of Itbayat, Batanes [2AM Nov 07: 21.1°N 119.4°E @ 130 kph].  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's Meteorological Information	24-hr. Rain Accum. (across its circulation): 25 to 300 mm [Light to Heavy] Minimum Central Pressure: 994 millibars (hPa) Size of Rain Circulation (in Diameter): Average (560 km) Size of Wind Circulation (55-kph Wind Diameter): Small (495 km) Area of Damaging Winds (100 kph or more wind gusts): 110 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)

PAGASA TROPICAL CYCLONE WIND SIGNALS

Image/Screenshot Source: DOST-PAGASA (http://pubfiles.pagasa.dost.gov.ph/tamss/weather/signals.jpg)

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