The Central Weather Bureau is monitoring a rare situation involving three separate tropical storms in the Pacific.
As of 11pm Taiwan time, forecasters were saying they might issue a sea warning some time in the middle of the night or in the early hours of Monday morning.
They added that a land warning could follow on Monday night or in the early hours of Tuesday morning.
As of 2pm on Sunday, the tropical storm was centered 413km south of Taiwan's southernmost tip, moving at a speed of five kilometers per hour in a north-northwesterly direction.
Forecasters say the storm has already made landfall on the Philippine island of Luzon, and that in turn had an impact on the strength of the storm.
Forecasters say that the strength of a high pressure system in the Pacific will have an impact on whether Linfa will affect Taiwan. If the system weakens as expected, they say that Linfa will accelerate toward the north and sweep through waters east of Taiwan. But if the high pressure system maintains strength, Linfa could move west before turning north toward Taiwan, posing a threat to western Taiwan. Either way, the storm is expected to be closest to Taiwan on Wednesday morning.
Forecasters say that the high pressure system will also have an effect on whether they issue a warning for Tropical Storm Chan-hom. As for Tropical Storm Nangka, meteorologists say that storm is still quite a distance away, so it’s too early to tell whether it will have an effect on Taiwan.