Monday, December 29, 2014

TD 23W (SENIANG) Update #002


for Sunday, 28 December 2014 [9:00 PM PhT]


Issued at: 7:30 PM PhT (11:30 GMT) Sunday 28 December 2014
Next Update: Early Monday Morning, 29 December 2014

Tropical Depression 23W (SENIANG) has maintained its strength as it moves slowly over the southwestern part of the South Philippine Sea just to the east of Surigao del Sur. 23W (SENIANG) is expected to directly affect most parts of Visayas and Mindanao including Palawan this coming week.

This cyclone will enhance the Northeast Monsoon (Hanging Amihan) - bringing cooler, windy and mostly cloudy conditions with occasional slight to moderate rains along the northern and eastern sections of Luzon..

Residents and visitors along Visayas, Mindanao and Palawan. should closely monitor the development of 23W (Seniang).

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.


Below are the regions or places in the Philippines that could be affected or that are being affected by the hazards generated by the current tropical cyclone.


  • Heavy to Extreme Rains (100 mm or more): Eastern Mindanao especially Dinagat and Siargao Islands, Surigao Provinces, Eastern portions of Agusan Provinces, Northern portions of Compostela Valley and Davao Oriental. - tonight through Monday afternoon (Dec 29).
  • Heavy Rains (50 mm to 100 mm): Southern portion of Southern Leyte, Misamis Oriental, Bukidnon and the Northern portion of Davao Region. - tonight through Monday afternoon (Dec 29).
  • Moderate to Heavy Rains (30 mmto 50 mm): Eastern Visayas, Cebu, Siquijor, Bohol, Northern portion of Zamboanga del Norte, Lanao Provinces, Cotabato, Northern part of Maguindanao, and Davao del Sur including Davao City and Samal Island. - tonight through Monday evening (Dec 29).

  • Moderate to Strong Winds (gusts of up to 75 kph): Caraga Region. - tonight through Monday afternoon (Dec 29).


As of 5:00 PM PhT today...0900 GMT.

Classification/Name: TD 23W (Seniang)
Location: Over the southwestern part of the Philippine Sea (near 8.1N 127.6E)
About: 145 km east-southeast of Bislig City, Surigao del Sur...or 130 km east-northeast of Cateel, Davao Oriental
Maximum Sustained Winds (10-min avg): 55 kph near the center...Gustiness: 75 kph
24 hr. Rain Accumulation (near and west of the center): 50 to 300 mm [Moderate to Extreme]
Minimum Central Pressure: 1000 millibars (hPa)
Size of Circulation [Convective Cloud-Based, in diameter]: 930 km (Medium)
Area of Damaging Winds (95 kph or more): None
Past Movement: Northwest @ 10 kph
Forecast Movement: Northwest to West-Northwest @ 12 kph
Towards: Surigao del Sur


TD 23W (Seniang) is expected to continue moving northwestward during the next 24 hours and will turn west-nortwestward through 48 hours. On the forecast track, TD 23W (Seniang) will be making landfall along the northern shores of Surigao del Sur by Monday morning (between 5-8 AM)...and will traverse Surigao del Sur-Surigao del Norte-Agusan del Norte Area through Monday afternoon. It shall then move across the Bohol Sea on its way to Bohol and Cebu islands, and central part of Negros through Tuesday afternoon.

TD 23W (Seniang) is expected to maintain its strength throughout the forecast period. Advance Intensity Forecast (AIF) shows its 10-minute maximum sustained winds remains at 55 kph by Tuesday afternoon .

The following is the 3-day forecast outlook summary for this system:

MONDAY AFTERNOON: Maintains its strength as it moves over Surigao del Norte-Agusan del Norte Area...about 45 km south-southeast of Surigao City [2PM DEC 29: 9.3N 125.6E @ 55kph].
TUESDAY AFTERNOON: Traverses the central part of Negros Island...maintaining its strength...about 25 km east-northeast of Kabankalan City, Negros Occidental [2PM DEC 30: 10.1N 123.0E @ 55kph].
WEDNESDAY MORNING: Crosses the northern part of Palawan. Intensified into a Tropical Storm after traversing the Sulu Sea...about 65 km north-northeast of Puerto Princesa City, Palawan [2PM DEC 31: 10.2N 119.0E @ 65kph].

*Please be reminded that the Forecast Outlook changes every 6 hours, and the Day 2 and 3 Forecast Track has an average error of 100 and 250 km respectively...while the wind speed forecast error, averages 35 kph 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.

Important Note: Please keep in mind that the above hazards summary and forecast outlook changes every 6 to 12 hrs!


Time/Date: 5:00 PM PhT Sun Dec 28, 2014
Location of Center: Near 8.1º N Lat 127.6º E Lon
Distance 1: 260 km SE of Siargao Island
Distance 2: 145 km ESE of Hinatuan, Surigao del Sur
Distance 3: 300 km SE of Surigao City
Distance 4: 340 km ESE of Camiguin Island
Distance 5: 245 km ESE of Butuan City









>> To know the meteorological terminologies and acronyms used on this update visit the ff:

For the complete details on TD 23W (SENIANG)...go visit our website @:


:: Kindly view our site's disclaimer at:

Copyright © 2014     All Rights Reserved


Posted by: " (Michael V. Padua)" <>
Reply via web post Reply to sender Reply to group Start a New Topic Messages in this topic (1)



No comments: