Monday, June 17, 2013

TD 91W (EMONG) Update #001


for Monday, 17 June 2013 [9:45 PM PhT]


Issued: 7:00 PM PhT (11:00 GMT) Monday 17 June 2013
Next Update: 7:00 AM PhT (23:00 GMT) Tuesday 18 June 2013

The strong disturbance (LPA) over the Philippine Sea, east of Bicol Region has strengthened into Tropical Depression 91W [EMONG]...expected to accelerate northward across the North Philippine Sea. Its outer rainbands will continue to bring occasional to widespread rains and thunderstorms across portions of the Bicol Region and Eastern Visayas tonight.

This depression is likely to enhance the Southwest Monsoon (Hanging Habagat) and bring windy/cloudy conditions with occasional rains and thunderstorms across Metro Manila, MiMaRoPa, CaLaBaRZON, Western Luzon incl. Western Bicol beginning Tuesday night or early Wednesday.

Residents and visitors along the east coast of Central and Northern Luzon should closely monitor the development of 91W (EMONG).

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 6:00 pm today, the center of Tropical Depression 91W (Emong) was located over the Philippine Sea...about 313 km east of Pandan, Catanduanes or 563 km east of Polillo Island...currently moving north with a forward speed of 15 km/hr in the general direction of the North Philippine Sea.

Maximum Sustained Winds (1-min. avg) are at 45 km/hr near the center with higher gusts. The 24-hour rainfall accumulation near the center of 91W (Emong) is estimated to be heavy (250 mm).


TD 91W (Emong) is expected to accelerate north-northwest to northerly during the next 24 to 48 hours. On the forecast track, the core of 91W (Emong) will be just along the open waters of the North Philippine Sea through Wednesday evening.

91W (Emong) is forecast to slowly intensify during the next 24 hours...becoming a Tropical Storm on Tuesday...and will continue to maintain its strength throughout the forecast period.

The following is the summary of the 2-day forecast outlook on this system:

TUESDAY EVENING: Accelerating northward across the open waters of the North Philippine Sea...about 423 km east of Santa Ana, Cagayan [6PM JUNE 18: 18.2N 126.2E @ 65kph].
WEDNESDAY EVENING: Moving closer to Okinawa-Ryukyu Islands...about to leave the Philippine Area of Responsibility (PAR)...about 250 km southwest of Okinawa, Japan [6PM JUNE 19: 24.6N 126.2E @ 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.

DEVELOPING RAINBANDS - Its westernmost outer rainbands spreading across Southeastern Luzon and Eastern Visayas. Affected Areas: Bicol Region, Samar & Leyte. Tropical Depression Conditions with light, moderate to strong winds (30-60 kph) will be expected along these bands (click here to know more about Rainbands).
24HR TOTAL RAINFALL ACCUMULATION - from 5 up to 50 mm (slight to moderate rainfall) can be expected along areas affected by the rainbands (see above)...with isolated amounts of 51 to 250 mm (moderate to heavy) along areas near the center of 91W (Emong).

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 Mon June 17, 2013
Class/Name: TD 91W (Emong)
Location of Center: 14.2º N Lat 127.1º E Lon
Distance 1: 313 km E of Pandan, Catanduanes
Distance 2: 320 km ENE of Virac, Catanduanes
Distance 3: 359 km ENE of Caramoan, CamSur
Distance 4: 387 km ENE of Legazpi City
Distance 5: 426 km ENE of Metro Naga
Distance 6: 453 km E of Daet, CamNorte
Distance 7: 563 km E of Polillo Island
Distance 8: 581 km SE of Casiguran, Aurora
Distance 9: 585 km ESE of Infanta, Quezon
Distance 10: 658 km ENE of Metro Manila
MaxWinds (1-min avg): 45 kph near the center
Peak Wind Gusts: 65 kph
Present Movement: North @ 15 kph
Towards: North Philippine Sea
24hr Rainfall Accum (near center): Heavy [250 mm]
Minimum Central Pressure: 1002 millibars (hPa)
Max Sea Wave Height (near center): 10 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 TD 91W (EMONG)...go visit our website @:


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