Chanthu currently shows wind speeds of 240 kilometers per hour (149 miles per hour), although it may weaken slightly as it approaches Taiwan.
Speaking Thursday to Taiwan’s central news agency, Central Weather Bureau forecaster Wu Wan-hua said she expected to see torrential rains in the southern part of the island.
There is also the risk of high winds, floods and mudslides on Taiwan’s high ground.
Although it is a much weaker storm than Super Typhoon Chanthu, Conson is still expected to have wind speeds of up to 150 kmph (92 mph) before the weekend falls.
The Vietnamese government has also ordered the ships to stay in port and has prepared evacuation plans, Reuters was quoted as saying, citing state media. As many as 800,000 people in the northern provinces of Vietnam could be affected by the arrival of the storm, the fifth to hit land this year.
Vietnam is not the only country affected by Tropical Storm Conson. The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) has issued a 3 out of 5 signal for heavy rain, strong wind and coastal flooding as the country will see these conditions for the next 24 hours.
The Vietnam Weather Agency has warned that there will likely be between six and eight more typhoons and tropical storms in the South China Sea this year.
Reuters contributed to this article.