Friday, August 09, 2013

TD 11W (LABUYO) Update #002


for Friday, 09 August 2013 [6:57 PM PhT]


Issued: 6:00 PM PhT (10:00 GMT) Friday 09 August 2013
Next Update: 6:00 AM PhT (22:00 GMT) Saturday 10 August 2013

Tropical Depression 11W (LABUYO) has accelerated and maintained its strength during the past 12 hours and is now inside the Philippine Area of Responsibility (PAR)...continues to threaten Northern Luzon.

Residents and visitors along Luzon including Batanes Group of Islands and Taiwan should closely monitor the development of 11W (Labuyo).

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


As of 5:00 pm today, the center of TD 11W (Labuyo) was located over the easternmost part of the Philippine Sea...about 910 km east-northeast of Catarman, Northern Samar or 940 km east of Virac, Catanduanes...currently moving west-northwest with an increased forward speed of 26 km/hr in the general direction of Northern Luzon.

Maximum Sustained Winds (1-min. avg) remain near 45 km/hr near the center with higher gusts. The 24-hour rainfall accumulation near the center of 11W (Labuyo) is estimated to be heavy (300 mm).


TD 11W (Labuyo) is expected to continue moving generally west-northwestward throughout the forecast period. On the forecast track, the core of 11W (Labuyo) will be approaching the eastern shoreline of Isabela and Cagayan on Sunday afternoon...and cut across Northern Luzon via Northern Isabela-Southern Cagayan-Kalinga-Apayao-Ilocos Provinces beginning midnight until mid-morning on Monday. By Monday afternoon, 11W will move out of the Philippine Area of Responsibility (PAR).

11W (Labuyo) is expected to gradually strengthen within the next 24 hours...becoming a Tropical Storm (TS) on Saturday...and eventually could become a Typhoon on Sunday. Advance Intensity Forecast (AIF) shows the potential Typhoon reaching peak winds of more than 150 km/hr on Sunday .

The following is the summary of the 2-day forecast outlook and an extended 3-day forecast on this system:

SATURDAY AFTERNOON: Becomes a TS as it moves across the Philippine Sea...about 535 km east-northeast of Pandan, Catanduanes [5PM AUGUST 10: 15.3N 129.0E @ 85kph].
SUNDAY AFTERNOON: Becomes a typhoon...still over the Philippine Sea, but approaching Isabela-Cagayan Area...about 160 km east of Palanan, Isabela [5PM AUGUST 11: 16.9N 123.9E @ 150kph].
MONDAY AFTERNOON: Moving across the West Philippine Sea, exiting the PAR...weakens slightly...about 300 km west-northwest of Laoag City, Ilocos Norte [5PM AUGUST 12: 18.7N 117.8E @ 140kph].

*Please be reminded that the Forecast Outlook changes every 6 hours, and the Day 2 and 3 Forecast Tracks have 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.


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.

DEVELOPING RAINBANDS - where Tropical Depression Conditions with light, moderate to strong winds (30-62 kph) will be expected. Affected Areas: None (still over Philippine Sea). (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 outer & inner rainbands (see above)...with isolated amounts of 101 to 300 mm (heavy) along areas near the center of 11W (Labuyo).

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


Time/Date: 5:00 PM PhT Fri Aug 09, 2013
Class/Name: TD 11W (Labuyo)
Location of Center: 13.9º N Lat 132.9º E Lon
Distance 1: 910 km ENE of Catarman, Northern Samar
Distance 2: 940 km E of Virac, Catanduanes
Distance 3: 980 km E of Caaramoan, CamSur
Distance 4: 995 km ENE of Legazpi City
Distance 5: 1050 km E of Metro Naga
Distance 6: 1080 km E of Daet, CamNorte
Distance 7: 1185 km ESE of Casiguran, Aurora
Distance 8: 1190 km ESE of Polillo Island
MaxWinds (1-min avg):45 kph near the center
Peak Wind Gusts: 65 kph
Present Movement: WNW @ 26 kph
Towards: Northern Luzon
24hr Rainfall Accum (near center): Heavy [300 mm]
Minimum Central Pressure: 1002 millibars (hPa)
Max Sea Wave Height (near center): 12 feet

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 TD 11W (LABUYO)...go visit our website @:


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