The latest storm and low pressure information on December 1 from the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said that some cloud clusters are developing into new low pressure areas near the Philippines.
PAGASA weather forecaster Robert Badrina said the upcoming low pressure is expected to enter the Philippine Forecast Area (PAR) in the coming days.
Along with the potential low pressure, four other weather systems are affecting the Philippines.
Mr Badrina pointed out that the Intertropical Convergence Zone (ITCZ), the easterly wind, the northeasterly monsoon and localized thunderstorms are affecting most parts of the country.
In particular, the tropical convergence zone, where the northern and southern hemisphere winds meet, is affecting the weather in Eastern Visayas, Caraga and Davao. These areas are forecast to see cloudy skies, scattered showers and thunderstorms.
Meanwhile, Batanes recorded cloudy skies with light rains caused by the northeast monsoon.
PAGASA's weather bulletin also stated that Palawan and the rest of Visayas are forecast to have cloudy to cloudy skies, with scattered showers due to local thunderstorms.
In the next 24 hours, similar weather patterns are forecast to prevail across Metro Manila and the rest of Luzon as easterly winds, hot, winds blowing from the Pacific Ocean.
Before the emergence of a new low pressure trough, PAGASA forecasted last weekend that the Philippines could welcome up to 2 more storms before the end of the 2025 typhoon season.
Accordingly, PAGASA forecasts that 1-2 typhoons will form or enter the Philippine Forecast Area (PAR) in December. These two potential storms will be named Wilma and Yasmin.
Historical data shows that December storms, often called Christmas storms, have unpredictable developments, causing great impact.
The fund of December storms is very diverse, with different levels of risk in each region. The potential path of Wilma and Yasmin, based on historical models, shows that a common scenario is a storm entering PAR but not making landfall but changing direction to the east of the Philippines and moving towards Japan.
Some other storms also entered the PAR but changed direction early, not in time to enter the northern or northeastern areas of the Philippines. If they do not make landfall, these storms can still cause heavy rain, rough seas and increase monsoons along the country's east coast.
In the event of a typhoon making landfall in the Philippines, the risk will be higher and the impact will be broader.
Some other potential paths for the December typhoon in the Philippines: Scanning the North or Central Luzon area, then entering the East Sea, towards Hong Kong (China); The storm enters the East Sea towards Vietnam after causing heavy rain in Southern Luzon to Northern Visayas; The storm moves over the East Sea towards Thailand after impacting Southern Visayas to Northern Mindanao.
