As of 8 a.m. Saturday, Tropical Storm Rumbia was centered 1,240 kilometers south-southeast of Taiwan's southernmost tip of Eluanbi, moving in a west-northwesterly direction at a speed of 26 km per hour.
Rumbia is packing maximum sustained winds of 65 kph and gusts reaching 90 kph, the bureau said Saturday morning.
There is little chance the storm will directly hit Taiwan, forecasters said, but they warned that the unstable weather it causes could last until July 2 islandwide.
The sixth tropical storm to be formed in the 2013 Pacific typhoon season, Rumbia means palm tree in Malaysian.
(By Lee Hsin-Yin)