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Friday, June 1, 2012

Onset of Rainy Season and TD AMBO

The observed weather patterns during the past fews days signal the onset of South West (SW) monsoon season. The occurrence of an intermittent to continuous rains in Metro Manila and the western sections of Luzon and Visayas ( areas under Type 1 climate ) due to early morning and late afternoon and evening showers and thunderstorms and the prevailing SW wind flow, are weather patterns associated with SW Monsoon. The presence of the a Low Pressure Area (LPA) east of Visayas and it's likely strengthening into a tropical cyclone is expected to bring simultaneous rains over the western sections of the country and the most areas of Luzon and Visayas, reinforcing the monsoon trough and enhancing the SW monsoon as it moves towards the north. With these developments the onset of the rainy season in the country has been established. However, breaks in the rain events are commmonly experienced that last for several days to weeks due to the strengthening of the ridge of the North Pacific high pressure area.

Right After the onset of rainy season, the first tropical cyclone enter the Philippine Area of Responsibility (PAR) and named AMBO.

For this year 2012 here are the list on name of tropical cyclone within the Philippine Area of Responsibility (PAR)


AMBO
BUTCHOY
COSME
DINDO
ENTENG
FRANK
GENER
HELEN
IGME
JULIAN
KAREN
LAWIN
MARCE
NINA
OFEL
PABLO
QUINTA
ROLLY
SIONY
TONYO
ULYSSES
VICKY
WARREN
YOYONG
ZOSIMO


The First Severe  Weather Bulletin issue for 2012 from PAGASA!!!


Severe Weather Bulletin Number ONE
Tropical Cyclone Warning: Tropical Depression "AMBO"
Issued at 11:30 p.m., Thursday, 31 May 2012
The Active Low Pressure Area (ALPA) east of Samar has intensified into a tropical depression and was named "AMBO"
Location of Center:
(as of 10:00 p.m.)
260 km East of Borongan, Eastern Samar
Coordinates:12.3°N, 128.0°E
Strength:Maximum winds of 55 kph near the center
Movement:Forecast to move Northwest at 15 kph
Forecast Positions/Outlook:Friday evening:190 km Northeast of Virac, Catanduanes
Saturday evening:340 km East Northeast of Tuguegarao City
Sunday evening:510 km Northeast of Tuguegarao City or
at 430 km East Southeast of Basco, Batanes
Areas Having Public Storm Warning Signal
PSWS #LuzonVisayasMindanao
Signal No. 1
(45-60 kph winds)
CatanduanesSamar ProvincesNone
Residents living in low lying and mountainous areas under signal # 1 are alerted against possible flashfloods and landslides.

Estimated rainfall amount is from 10 - 15 mm per hour (heavy) within the 200 km diameter of the Tropical Depression.

Fishing boats and other small seacrafts are advised not to venture out into the eastern seaboards of Luzon, Visayas and Northeastern Mindanao.

The public and the disaster coordinating councils concerned are advised to take appropriate actions and watch for the next bulletin to be issued at 5 AM tomorrow. 





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