Wednesday, July 15, 2009

TD ISANG (91W) - Update #003

for Wednesday, 15 July 2009 [12:07 PM PST]

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Typhoon2000 (T2K) NEWS (Wed July 15 2009):

Currently issuing 6-hrly E-Mail, SMS & Web Updates on the TD ISANG [91W] (except for 12:00 AM).


+ Philippines (PAGASA/10-min avg): 55 km/hr
+ Japan (JMA/10-min avg): 45 km/hr
+ USA (JTWC/1-min avg): 35 km/hr


As of 12:00 PM PST (04:00 GMT) Wed 15 July 2009
View: Advisory Archives (2004-2009)

  • Tropical Depression ISANG (91W) has rapidly accelerated to the NW while over the Philippine threatens Extreme Northern Luzon. This system is expected to enhance the SW Monsoon across Western Visayas starting today.

    *Residents and visitors along Eastern & Extreme Northern Luzon should closely monitor the progress of ISANG.

    *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: ISANG is expected to continue tracking towards the NW across the warm waters of the Philippine Sea. The 2 to 3-day medium range forecast shows ISANG passing about 250 km. to the east of Cagayan tomorrow and shall be in the vicinity of Batanes by Friday morning July 17. This system is expected to attain Tropical Storm status later tonight or early tomorrow.

    + Effects: ISANG's circulation continues to consolidate...Its weak outermost bands continues to spread across Eastern Visayas and the coastal areas of Eastern Bicol Region...Cloudy skies, possible light to moderate rains with squalls and thunderstorms can be expected along these bands.

    + Current SW Monsoon Intensity: MODERATE >> Mostly cloudy skies w/ light to moderate occasional rains, thunderstorms, squalls and moderate SW winds not exceeding 40 kph can be expected over the following affected areas: CALAMIAN GROUP, PALAWAN & WESTERN 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 94W (LPA) west of Luzon remains weak over the South China Sea...currently located near lat 16.4N lon 115.7E...or about 495 km WNW of Dagupan City...with 1-min maximum sustained winds of 30 kph...drifting WNW slowly while embedded within the broad Monsoon Trough (ITCZ).

    This system will be closely monitored for possible development into a Significant Tropical Cyclone within the next 2 to 3 days. 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 July 15 2009
    Location of Center: 14.5º N Lat 127.6º E Lon
    Distance 1: 370 km (200 nm) ENE of Virac, Catanduanes
    Distance 2: 415 km (225 nm) ENE of Gota Beach
    Distance 3: 450 km (242 nm) ENE of Legazpi City
    Distance 4: 485 km (260 nm) ENE of Metro Naga/CWC
    Distance 5: 510 km (275 nm) ENE of Daet, Cam Norte
    Distance 6: 620 km (335 nm) SE of Casiguran, Aurora
    Distance 7: 635 km (343 nm) ESE of Infanta, Quezon
    Distance 8: 700 km (378 nm) East of Metro Manila
    MaxWinds (10-min avg):
    55 kph (30 kts) near the center
    Peak Wind Gusts: 70 kph (38 kts)
    Saffir-Simpson Scale: Tropical Depression
    Coastal Storm Surge Height: 0 feet [0 m]
    Central Pressure: 1000 millibars (hPa)
    Recent Movement: NW @ 28 kph (15 kts)
    General Direction: Philippine Sea
    Size (in Diameter): 350 km (190 nm) / Average
    Max Sea Wave Height (near center): 8 ft (2.4 m)
    PAGASA TrackMap (for Public): 8 AM PST Wed July 15
    JTWC Ship Avoidance TrackMap:
    18Z Tue July 14
    Zoomed Satellite Pic: Near Real-Time

    8 AM (00 GMT) 16 JULY: 17.6N 125.3E
  • 8 AM (00 GMT) 17 JULY: 19.7N 122.4E
    8 AM (00 GMT) 18 JULY: 21.8N 119.5E

    REMARKS: 8 AM (00 GMT) 15 JULY POSITION: 14.5N 127.6E.




    > Image source:  NOAA SATELLITE CENTER 


      ^ - 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 ISANG (91W)...go visit our website @:


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