MANILA, Sept. 19 (PNA) — The Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA) has downgraded from red to orange the rainfall advisory for Metro Manila and other nearby provinces in Luzon but warned that moderate to heavy rains due to southwest monsoon enhanced by Tropical Storm “Mario” are still expected.
PAGASA weather observer Christian Ison told the Philippines News Agency (PNA) that orange rainfall warning was issued at 6 p.m. in Metro Manila, Bulacan, Pampanga, Rizal and Cavite.
The orange rainfall advisory, the second in its three-stage rainfall warning system is raised in areas where rainfall is between 15 mm and 30 mm within one hour. Flooding is a definite threat in communities under the orange alert.
Ison said that red rainfall advisory, the highest in its rainfall warning system, was issued Zambales, Bataan, Tarlac and Nueva Ecija.
Under red rainfall advisory is issued when downpours constitute an emergency. This is raised when observed rainfall is more than 30 mm within one hour or if rainfall has continued for the past three hours and is more than 65 mm.
With severe flooding is expected, residents of the above-mentioned areas to take precautionary measures.
He added yellow rainfall warning is still up in Laguna, Batangas and Quezon.
Under the heavy rainfall warning system, a yellow rainfall advisory is raised when the expected rainfall amount is between 7.5 mm and 15 mm within one hour and likely to continue.
Communities given this advisory are advised to be aware of the weather condition and warned that flooding may be possible in low-lying areas. (PNA)