For the past several days, strong to gale force northeasterly winds has prevailed over the seaboards of Northern Luzon due to the strengthening of the high pressure system over Siberia. Moreover, gradual cooling of the surface air temperature over the Northeastern part of Luzon has been observed. These meteorological conditions indicate the onset of Northeast Monsoon (Amihan) season in the country.
With these developments, the northeast wind flow is expected to become dominant over most parts of the country, bringing cold and dry air. Surges of cold temperatures may also be expected in the coming days to months.