Potential disturbance after Bebinca may extend habagat rains - PAGASA | ABS-CBN

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Potential disturbance after Bebinca may extend habagat rains - PAGASA

Potential disturbance after Bebinca may extend habagat rains - PAGASA

Ariel Rojas,

ABS-CBN News

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MANILA – The southwest monsoon or habagat enhanced by tropical storm Bebinca would bring rains over the western sections of Southern Luzon, Visayas, and Mindanao this weekend, PAGASA said Friday.

However, a potential weather disturbance that may form east of Luzon early next week could extend the duration of the monsoon rains.

"Imbes po na 3 to 4 days [from Thursday] ang ulan dito sa western part ng Southern Luzon at Visayas at area ng Mindanao ay magtutuluy-tuloy po yan hanggang 5 to 6 days kung mabuo po ang low pressure area dito sa east ng ating bansa," senior weather forecaster Glaiza Escullar explained.

(Instead of 3 to 4 days of rains over the western sections of Southern Luzon, Visayas, and Mindanao, it may continue up to 5 or 6 days if a low pressure area forms east of the country.)

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She said the public should focus on the hazards from the monsoon rains.

"Dahil saglit lang naman ang pagpasok ng Philippine area of responsibility ng bagyong Bebinca, ang binibigyan po natin ng emphasis dito ay ang southwest monsoon o habagat na maaari po nyang ma-enhance."

(Because tropical storm Bebinca will only stay briefly inside the Philippine area of responsibility, we are giving emphasis on the southwest monsoon that it will enhance.)

https://newThe southwest monsoon or habagat enhanced by tropical storm Bebinca would bring rains over the western sections of Southern Luzon, Visayas, and Mindanao this weekend, PAGASA said Friday.s-image-api.abs-cbn.com/Prod/editorImage/1726203135347GXU7j5BbgAIf4cd.jpg  


HABAGAT RAINS

 

Over the weekend until midday Monday, heavy to intense rains are projected over Mimaropa and parts of Bicol Region, Western Visayas, and Negros Island Region while moderate to heavy rains may also be experienced over the rest of Southern Luzon and Visayas as well as Metro Manila and parts of Central Luzon and Mindanao.

Several provinces in these regions have been placed under heavy rainfall warnings and flooding have been reported in some areas.

PAGASA stations in southern Luzon recorded the heaviest rainfall between 8 a.m. September 12 and 8 a.m. September 13.

Two weeks’ worth of rain in September or 243.8 millimeters was observed in Coron, Palawan while San Jose, Occidental Mindoro logged 172.9 mm, equivalent to more than ten days of rain.

While the concentration of monsoon rains are experienced in the central part of the country, several dams in Luzon showed some increase in their respective water levels in the past 24 hours.

Magat had 1.76 meters increment, San Roque water level increased by half-meter, and Pantabangan recorded a 0.44-m rise.

But state hydrologists do not see the Bebinca-enhanced monsoon rains significantly increasing the water level in Angat Dam.

"It will need at least 560 mm ng pag-ulan para po ma-reach yung normal high water [level] na 210 [meters]. So ngayon po I think hindi naman po ganun kalakas or kataas yung forecast rainfall for the Angat watershed," senior hydrologist Rosalie Pagulayan said.

(Angat Dam will need at least 560 mm of rain to reach its normal high water level of 210 meters. For now, I think our rainfall forecast for the Angat watershed will not be enough.)

 

DETERIORATING BEBINCA, BRIEF PAR STAY

 

As of 10 a.m. Friday, tropical storm Bebinca was located 1,500 kilometers east of Extreme Northern Luzon, with sustained winds of 85 kph and up to 105 kph gusts. It is moving north northwestward at 20 kph.

Bebinca will only be inside the Philippine area of responsibility (PAR) between Friday afternoon and early Saturday.

The country's sixth storm this year will be assigned the local name Ferdie. 

The storm deteriorated ahead of its PAR entry due to dry air intrusion and strong vertical wind shear or change in wind speed and direction with height.

Tropical cyclones require moist air as the condensation of moisture to form clouds releases energy that fuels the storm. Weak wind shear meanwhile keeps the storm vertical, which promotes intensification.

Bebinca is seen to re-intensify into a severe tropical storm and even reach typhoon strength once it exits the PAR, where the environmental conditions are more favorable.



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