Wednesday, September 23, 2009

TD PRE-ONDOY (96W) - Update #001


for Wednesday, 23 September 2009 [12:20 PM PST]

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Typhoon2000 (T2K) NEWS (Wed September 23 2009):

Now initializing the 6-hrly advisories (except 12:00 AM) on the newly-formed TD PRE-ONDOY (96W).


+ Japan (JMA/10-min avg): 45 km/hr
+ USA (JTWC/1-min avg): 30 km/hr


12:00 PM PST (04:00 GMT) Wed 23 September 2009
View: Advisory Archives (2004-2009)

  • The strong tropical disturbance or LPA off the Philippine Sea, east of Central Luzon has become Tropical Depression PRE-ONDOY (96W)...likely to threaten the main island of Luzon this weekend.

    *Residents and visitors along the Eastern Coast of Luzon and Bicol Region should closely monitor the progress of PRE-ONDOY.

    *Kindly refer to your local warnings & bulletins issued by your country's official weather agency. This advisory is intended for additional information purposes only.

    + Forecast Outlook: PRE-ONDOY is expected to continue consolidate and intensify while moving on a slow westward to Luzon. The 3-day initial forecast shows the system becoming a strong tropical storm as it moves closer to Central Luzon. It shall be passing more or less 200 km north of Northern Bicol on Saturday Sep 26 as a Cateogory 1 Typhoon. More forecast outlook will be issued later.

    + Effects: PRE-ONDOY's circulation continues to organize off the Philippine Sea...Its western outer rainbands expected to reach the Bicol Region and Samar Provinces tomorrow.

    + Current SW Monsoon Intensity: WEAK >> Light southwesterly winds not in excess of 30 kph with occasional widespread rains or thunderstorms can be expected along the following affected areas: SOUTHERN LUZON, BICOL REGION, MASBATE, NORTHERN MINDANAO, PALAWAN AND REST OF VISAYAS. Possible landslides, mudslides, mudflows (lahars) and life-threatening flash floods are likely to occur along steep mountain/volcanic slopes, river banks, low-lying & flood-prone areas of the affected areas.

    + Tropical Cyclone Watch:

    (1) Tropical Disturbance 95W (LPA) located off the South China Sea continues to move towards Vietnam's coast...
    currently located near lat 16.0 lon 112.8E...or about 510 km ESE of Da Nang, Vietnam...with 1-min maximum sustained winds of 30 kph...forecast to move West @ 20 kph.

    (2) Tropical Disturbance (LPA) developing over the Caroline Islands, south of Guam...
    currently located near lat 8.8N lon 143.5E...or about 1,890 km East of Northern Mindanao...with 1-min maximum sustained winds of 30 kph...almost stationary.

    These systems will be closely monitored for potential development into Tropical Cyclones within the next 2 to 3 hours. Watch for more information on this new disturbance as new data arrives. Kindly click the cool
    T2K Graphical Satellite Analysis, issued everyday @ 2 PM PST (06 GMT) on tropical systems across the Western Pacific.

    [Important Note: Please keep in mind that the above forecast outlook, effects, current monsoon intensity, & tropical cyclone watch changes every 6 to 12 hrs!] 
    Time/Date: 12:00 PM PST Wed September 23 2009
    Location of Center: 14.9º N Lat 132.9º E Lon
    Distance 1: 940 km (507 nm) ENE of Virac, Catanduanes
    Distance 2: 990 km (535 nm) ENE of Gota Beach, Caramoan
    Distance 3: 985 km (532 nm) ENE of Sorsogon City
    Distance 4: 1,010 km (545 nm) ENE of Legazpi City
    Distance 5: 1,055 km (570 nm) ENE of Metro Naga/CWC
    MaxWinds (1-min avg):
    45 kph (25 kts) near the center
    Peak Wind Gusts: 65 kph (35 kts)
    Saffir-Simpson Scale: Tropical Depression
    Coastal Storm Surge Height: 0 feet [0 m]
    Central Pressure: 1004 millibars (hPa)
    Recent Movement: West @ 07 kph (04 kts)
    General Direction: Eastern Luzon
    Size (in Diameter): 500 km (270 nm) / Average
    Max Sea Wave Height (near center): 9 ft (2.7 m)
    T2K TrackMap (for Public): 12 PM PST Wed Sep 23
    Zoomed Satellite Pic: Near Real-Time

  • T2K 12, 24, & 36 HR. FORECAST:

    8 AM (00 GMT) 24 SEPTEMBER: 14.8N 131.6E / 65-85 KPH (Tropical Storm) / W @ 11 KPH
  • 8 AM (00 GMT) 25 SEPTEMBER: 14.8N 127.8E / 95-120 KPH (Tropical Storm) / W @ 15 KPH
    8 AM (00 GMT) 26 SEPTEMBER: 15.0N 125.2E / 130-160 KPH (Typhoon-Cat 1) / WNW @ 15 KPH




    > Image source:  NOAA SATELLITE CENTER 


    > Image source: (

      ^ - JTWC commentary remarks (for Meteorologists) from their latest warning.

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


    For the complete details on TD PRE-ONDOY (96W)...go visit our website @:


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