Saturday, January 12, 2013

LPA 94W (BISING) StormWatch #008


for Saturday, 12 January 2013 [6:50 PM PhT]


Issued: 7:00 PM PhT (11:00 GMT) Saturday 12 Jan 2013
Next Update: 7:00 AM PhT (23:00 GMT) Sunday 13 Jan 2013

Tropical Disturbance 94W (LPA) [Bising] continues to move faster north-northwestward across the North Philippine Sea. Its rainbands no longer affecting land areas.

This disturbance will continue to enhance the Northeast Monsoon (Amihan) and bring 15-35 km/hr winds with "on-and-off" slight to moderate rains across Luzon including Metro Manila, Mindoro, Marinduque and the Bicol Region tonight and tomorrow.

Residents and visitors along Eastern Luzon should closely monitor the development of 94W (LPA) [BISING].

Do not use this for life or death decision. This update is intended for additional information purposes only. Kindly refer to your national weather agency for official warnings, advisories or bulletins.


As of 6 PM today, the center of Tropical Disturbance 94W (LPA) [Bising] was located over the North Philippine Sea...about 287 km north-northeast of Pandan, Catanduanes or 374 km east of Casiguran, Aurora...currently moving north-northwest with an increased forward speed of 24 km/hr.

Maximum Sustained Winds (1-min. avg) remain at 35 km/hr near the center with higher gusts. A WeatherPhilippines/Meteomedia Automated Weather Station (AWS) situated in Barangay Dapdap in Legazpi City, Albay has registered 148.8 millimeters (mm) of rainfall in a span of 24 hours, which is considered heavy. While, another AWS in Infanta, Quezon registered a 24-hr rain of 152.7 mm. The 24-hour rainfall accumulation near the center of 94W (Bising) is estimated to be heavy (250 mm).


Tropical Disturbance 94W (LPA) [Bising] is expected to continue moving north-northwest with a turn to the north-northeast during the next 24 hours. On the forecast track, the core of 94W (LPA) will continue to move across the open waters of the North Philippine Sea through Sunday evening...hundreds of kilometers to the east of Batanes Islands.

94W is forecast to maintain its strength through the next 24 hours...and will begin its transition into a Winter Storm (aka. Frontal System) while moving towards the sea south of Japan.

*Please be reminded that the Forecast Outlook changes every 6 hours, and the Day 3 Forecast Track have an average error of 250 km...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.


Below is the summary of the storm's parts and its hazards affecting specific areas. You can also view this image link for you to understand the parts.

RAINBANDS - over water (Philippine Sea) longer affecting land areas. Tropical Disturbance Conditions with light, moderate to strong winds (05-50 kph) will be expected along these bands (click here to know more about Rainbands).
24HR TOTAL RAINFALL ACCUMULATION - from 5 up to 100 mm (slight to heavy rainfall) can be expected along areas affected by the rainbands (see above)...with isolated amounts of 101 to 250 mm (heavy) along areas near the center of 94W (LPA) [Bising].

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


Time/Date: 6:00 PM PhT Sat January 12, 2013
Class/Name: LPA 94W (Bising)
Location of Center: 16.3º N Lat 125.6º E Lon
Distance 1: 287 km (NNE) away from Pandan, Catanduanes
Distance 2: 350 km (ESE) from Virac, Catanduanes
Distance 3: 374 km (E) from Casiguran, Aurora
Distance 4: 379 km (NE) away from Daet, CamNorte
Distance 5: 436 km (SE) from Santa Ana, Cagayan
MaxWinds (1-min avg): 35 kph near the center
Peak Wind Gusts: 55 kph
Present Movement: NNW @ 24 kph
Towards: North Philippine Sea
24hr Rainfall Accum (near center): Heavy [250 mm]
Minimum Central Pressure: 1007 millibars (hPa)
Max Sea Wave Height (near center): 12 feet
Possible Storm Surge Height: 0 ft (0 m)

T2K/WP StormTracks (for Public): GIF | Google Map (Flash)







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

For the complete details on LPA 94W (BISING)...go visit our website @:


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