TAIPEI -- Taiwan's meteorological agency issued a land warning on Thursday afternoon as Typhoon Usagi approaches the island, following its issuance of a sea warning in the morning.

Mapped: Typhoon Usagi weakens over Philippines but Taiwan braces for severe weather - Heavy rains accompanying storm may cause flash flooding in low-lying and inland areas

Typhoon Usagi struck the northern Philippines on Thursday afternoon, the fifth powerful storm to impact the country in three weeks, with the system set to swing north and move toward Taiwan.