Monday, December 29, 2014



for Monday, 29 December 2014 [7:25 PM PhT]


Issued at: 6:50 PM PhT (10:50 GMT) Monday 29 December 2014
Next Update: Tuesday Early Morning, 30 December 2014

Tropical Storm JANGMI (SENIANG) has emerged over Bohol Sea and is now passing very close to Camiguin Island...expected to make another landfall over Southern Negros early tomorrow morning between 1 to 3 AM. Stormy weather will continue to prevail across Northern Mindanao and the Visayas through the evening.

This cyclone will continue to 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 including the Bicol Region

Residents and visitors along Visayas, Mindanao and Palawan. should closely monitor the development of Jangmi (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): Portions of Eastern and Western Samar, Most parts of Leyte, Southern Leyte, Cebu, Bohol, Siquijor, Negros Oriental, Northern and Central Negros Occidental, Eastern Misamis Oriental, Caraga, Camiguin, Dinagat and Siargao Islands - tonight through Tuesday morning (Dec 30).
  • Heavy Rains (50 mm to 100 mm): Rest of Samar Provinces, Rest of the Visayas, Northern portions of Zamboanga Peninsula, Misamis Occidental, some portions of Lanao Provinces, Bukidnon, and the Northern part of Davao Region - tonight through Tuesday morning (Dec 30).
  • Moderate to Heavy Rains (30 mm to 50 mm): Eastern and Southern Bicol including Masbate-Burias-Ticao Islands, Boracay, Northernmost Antique, Western Aklan, Most parts of Zamboanga Peninsula, Northern Maguindanao, Cotabato and the Rest of Davao Region including Davao and Samal Island - tonight through Tuesday morning (Dec 30).
  • Tropical Storm Force Winds (Gusts of not more than 85 kph): Northern Caraga, Eastern Misamis Oriental including Camiguin Island, Dinagat and Siargao Islands, Southern Leyte and Bohol - tonight.


As of 5:00 PM PhT today, Dec 29...0900 GMT.

Classification/Name: TS Jangmi (Seniang)
Location: Over Bohol Sea (near 9.4N 124.7E)
About: 20 km North of Camiguin Island...or 100 km ESE of Tagbilaran City, Bohol
Maximum Sustained Winds (10-min avg): 65 kph near the center...Gustiness: 85 kph
24 hr. Rain Accumulation (near and west of the center): 50 to 350 mm [Moderate to Extreme]
Minimum Central Pressure: 996 millibars (hPa)
Size of Circulation [Convective Cloud-Based, in diameter]: 690 km (Medium)
Area of Damaging Winds (95 kph or more): None
Past Movement: WNW @ 15 kph
Forecast Movement: West @ 13 kph
Towards: Southern Negros


TS Jangmi (Seniang) is expected to move westward during the next 24 hours and will bend slightly west-southwest slowly throughout the forecast outlook. On the forecast track, TS Jangmi (Seniang) will pass very close to the southern shores of Bohol and Cebu tonight, and shall traverse Southern Negros by early Tuesday morning. The storm shall be over Sulu Sea on Tuesday afternoon...and shall be approaching Southern Palawan on Wednesday afternoon.

TS Jangmi (Seniang) is expected to maintain its strength throughout the forecast period. Advance Intensity Forecast (AIF) shows its 10-minute maximum sustained winds remaining at 65 kph by Wednesday afternoon.

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

TUESDAY AFTERNOON: Over Sulu Sea after crossing Southern Negros...turns to the west-southwest...about 130 km west of Dumaguete City, Negros Oriental [2PM DEC 30: 9.3N 122.1E @ 65kph].
WEDNESDAY AFTERNOON: Maintains its strength as it moves across the western part of Sulu Sea, approaching the eastern shores of Southern Palawan...about 100 km south-southeast of Puerto Princesa City, Palawan [2PM DEC 31: 8.9N 119.1E @ 65kph].
THURSDAY AFTERNOON: Moving across the West Philippine Sea, after crossing Southern Palawan...about 220 km west of Bataraza, Palawan [2PM JAN 01: 8.7N 115.6E @ 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 Mon Dec 29, 2014
Location of Center: Near 9.4º N Lat 124.7º E Lon
Distance 1: 100 km WSW of Surigao City
Distance 2: 105 km WNW of Butuan City
Distance 3: 135 km SE of Metro Cebu
Distance 4: 155 km E of Dumaguete City
Distance 5: 220 km ESE of Kabankalan City
Distance 6: 670 km ESE of Puerto Princesa









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

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