Story highlights Rail services in Taiwan to be halted as storm draws near; some flights canceled

A storm last month killed at least seven people in Taiwan and 26 in mainland China

(CNN) A strong storm is spinning across the sea toward Taiwan, bringing the threat of powerful winds and heavy rains.

Typhoon Dujuan is forecast to hit Taiwan's east coast on Monday evening. As it churned across the sea early Monday, the storm was packing maximum sustained winds of around 230 kph (145 mph).

The current predicted track calls for the storm to pass to the south of the densely populated region surrounding Taipei, Taiwan's capital city.

It's expected to weaken somewhat before making landfall as the equivalent of a Category 3 hurricane, according to CNN meteorologist Guy Michael. It's also forecast to dump around 500 millimeters (20 inches) of rain on mountainous areas of central Taiwan.