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MANILA - State weather bureau PAGASA is predicting heavy rains in the western part of Luzon and parts of the Visayas in the next 3-5 days as tropical depression 'Domeng' threatens to intensify into a tropical storm by Friday.

DOST-PAGASA Senior Weather Specialist Chris Perez said weather research and forecasting models showed that heavy rains are expected in the western section of Luzon, including parts of the Visayas, in the next 3-5 days.

"Around 44.6 mm (of rain) for the next 24 hours and 32 (mm), 23 (mm) and even 71.5 (mm)sa Sangley Point, Cavite by Friday," he said.

He said the continuous rains can be considered a threat for possible flash floods and landslides.

The weather bureau said Domeng, last spotted 805 kilometers east of Catarman, Northern Samar as of 10 a.m., is not expected to make landfall in the country.

Domeng has maintained its strength, packing 45 kph winds near the center and gusts of up to 60 kilometers per hour. It is moving northwest at 15 kilometers per hour.

The storm is expected to enhance the southwest monsoon (habagat) until Monday, the state weather bureau said in its 11:00 a.m. update.