MANILA, Philippines – The state weather bureau has raised a yellow warning over Metro Manila due to tropical storm "Helen".
"Moderate to heavy rainfall is expected over Metro Manila most likely to continue for the next 3 hours," PAGASA said in its Twitter account.
"POSSIBLE FLOODING in low-lying areas and those located near the river and creek channels.," it added.
Under yellow warning, residents in low-lying areas are advised to monitor the situation in their surroundings.
PAGASA said tropical storm "Helen" is now crossing over northern Luzon and is expected to enhance the southwest monsoon.