Friday, July 18, 2014

Typhoon RAMMASUN (GLENDA) Final Update [#014]


for Thursday, 17 July 2014 [2:30 PM PhT]


Issued at: 2:00 PM PhT (06:00 GMT) Thursday 17 July 2014

Typhoon RAMMASUN (GLENDA) has weakened further as it moved out the Philippine Area of Responsibility (PAR) early this morning.

Meanwhile, as of 1:00 pm today, Tropical Disturbance 93W (LPA) - a rapidly developing, compact system over the Caroline Islands was estimated about 280 km WNW of Yap Island (near 9.9N 135.6E)...with maximum winds of 35-55 kph near the center, and was moving westward slowly towards the southern-easternmost part of the Philippine Sea. Various dynamic forecast models indicate this system will become a Tropical Cyclone within the next 12 to 24 hours.
Residents and visitors along Hainan, Southern China should closely monitor the development of TY Rammasun (Glenda).

Information based on data collected by WeatherPhilippines Foundation, Inc. shall not be taken as official data. Weather information broadcasted and distributed by PAGASA remains as official data. WeatherPhilippines shall not be responsible for the private use and reliance of its weather information.


Below are the regions or places in the Philippines that could be affected by the current tropical cyclone.



As of 11:00 AM PhT today...0300 GMT.

Location: Over the South China Sea (near 16.5N 115.1E)
About: 540 km west-northwest of Iba, Zambales...or 570 km southeast of Qionghai, Hainan, China
Maximum Sustained Winds (1-min avg): 140 kph near the center...Gustiness: 165 kph
24 hr. Rain Accumulation (near the center): 100 to 350 mm [Heavy to Extreme]
Size (in diameter): 555 km (Small)
Area of Damaging Winds (95 kph or more): 90 kilometers from the center
Past Movement: West-northwest @ 18 kph
Forecast Movement: Northwest @ 21 kph
Towards: Hainan Island


TY Rammasun (Glenda) is expected to move northwestward during the next 24 hours...with a little turn to the west-northwest through 48 hours. On the forecast track, the typhoon will be approaching the northeastern coast of Hainan by Friday morning...and will traverse Northern Hainan and the Gulf of Tonkin by Saturday.

Rammasun is expected to reintensify during the next 24 it moves across the South China Sea. Advance Intensity Forecast (AIF) shows its 1-minute maximum sustained winds increasing to 160 kph (Category 2 Typhoon) by Friday morning.

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

FRIDAY MORNING: Regains Category 2 Typhoon status as it approaches the northeastern coast of Hainan...about 160 km east of Qionghai, Hainan, China [8AM JUL 18: 19.0N 112.0E @ 160kph].
SATURDAY MORNING: Weakens as it approaches the northeastern coast of Vietnam...about 85 km east northeast of Ha Long, Vietnam [8AM JUL 19: 21.2N 107.8E @ 140kph].

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

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


Time/Date: 11:00 AM PhT Thu Jul 17, 2014
Class/Name: TY Rammasun (Glenda)
Minimum Central Pressure: 967 millibars (hPa)

Location of Eye: Near 16.5º N Lat 115.1º E Lon
Distance 1: 670 km WNW of Metro Manila
Distance 2: 590 km WNW of Subic, Zambales
Distance 3: 540 km WNW of Iba, Zambales
Distance 4: 570 km SE of Qionghai, China
Distance 5: 650 km S of Hong Kong, China






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

For the complete details on TY RAMMASUN (GLENDA)...go visit our website @:


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Posted by: " (Michael V. Padua)" <>
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