Friday, January 04, 2013

TS SONAMU (AURING) Update #006


for Friday, 04 January 2013 [7:14 PM PhT]


Issued: 7:00 PM PhT (11:00 GMT) Friday 04 Jan 2013
Next Update: 7:00 AM PhT (23:00 GMT) Saturday 05 Jan 2013

Tropical Storm Sonamu (Auring) has moved out of the Philippine Area of Responsibility (PAR) and intensified while over the West Philippine Sea. This system is now heading towards the South China Sea-Gulf of Thailand Area.

Residents and visitors along Spratly Islands and Southern Vietnam should closely monitor the development of Sonamu (Auring).

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 Storm Sonamu (Auring) was located over the West Philippine Sea...about 234 km south of Pagasa Island, Spratlys or 670 km southeast of Nha Trang City, Vietnam...currently moving west-northwest with an accelerated forward speed of 24 km/hr in the general direction of the South China Sea-Gulf of Thailand Area.

Maximum Sustained Winds (1-min. avg) have increased to 75 km/hr near the center with higher gusts. Sonamu (Auring) is a small-to-average-sized tropical cyclone with a diameter of 335 kilometers across. The 24-hour rainfall accumulation near the center and to the northwest of TS Sonamu is estimated to be extreme (450 mm).


Tropical Storm Sonamu (Auring) is expected to move west to west-southwestward throughout the forecast period. On the forecast track, the core of Sonamu (Auring) is expected to move across the South China Sea on Saturday...and should be approaching the Gulf of Thailand while passing to the south of Vietnam on Sunday through Monday.

Sonamu (Auring) is forecast to strengthen on Saturday...before losing strength beginning Monday while over the Gulf of Thailand.

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

SATURDAY EVENING: Intensifies while moving westerly across the South China Sea...about 458 km south-southeast of Nha Trang City, Vietnam [6PM JAN 05: 8.2N 110.2E @ 85kph].
SUNDAY EVENING: Starts to weaken as it approaches the Gulf of Thailand...about 351 km south-southeast of Ho Chi Minh City [6PM JAN 06: 7.7N 107.3E @ 65kph].
MONDAY EVENING: Maintains its Tropical Storm strength as it moves across the Gulf of Thailand...about 414 km south-southwest of Ho Chi Minh City [6PM JAN 07: 7.3N 105.4E @ 65kph].


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.

INNER RAINBANDS - over water (West Philippine Sea)...not affecting any land areas. Tropical Storm Conditions with Tropical Storm Force Winds (62-95 kph) will be expected along these bands.
OUTER RAINBANDS - affecting and spreading across Spratly Islands and the coastal areas of Southeastern Vietnam. Tropical Depression Conditions with light to moderate winds (05-61 kph) will be expected along these bands (click here to know more about Rainbands).
24HR TOTAL RAINFALL ACCUMULATION - from 5 up to 200 mm (slight to heavy rainfall) can be expected along areas affected by the developing rainbands (see above)...with isolated amounts of 201 to 450 mm (heavy to extreme) along areas near, north and west of the center of TS Sonamu (Auring).

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 Fri January 04, 2013
Class/Name: TS Sonamu (Auring)
Location of Center: 9.0º N Lat 114.4º E Lon
Distance 1: 234 km (S) from Pagasa Is., Spratlys
Distance 2: 317 km (WNW) away from Balabac, Palawan
Distance 3: 353 km (WNW) away from Bataraza, Palawan
Distance 4: 374 km (WNW) away from Brooke's Point, Palawan
Distance 5: 478 km (WSW) away from Puerto Princesa
Distance 6: 670 km (SE) from Nha Trang, Vietnam
MaxWinds (1-min avg): 75 kph near the center
Peak Wind Gusts: 95 kph
Present Movement: WNW @ 24 kph
Towards: West Philippine Sea
24hr Rainfall Accum (near center): Extreme [450 mm]
Minimum Central Pressure: 993 millibars (hPa)
Size (in Diameter): 335 km [Small/Average]
Max Sea Wave Height (near center): 12 feet
Possible Storm Surge Height: 1-3 ft (0.3-0.9 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 TS SONAMU (AURING)...go visit our website @:


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