Typhoon Jongdari is rapidly heading north toward South Korea and is forecast to reach southern waters in the Yellow Sea by Tuesday night.
  
According to the Korea Meteorological Administration, the ninth typhoon of the year is expected to pass waters west of Jeju Island at around 6 p.m. on Tuesday and reach the southern waters in the Yellow Sea later at night.
  
The typhoon is forecast to continue to move its way northward in the Yellow Sea before weakening into a tropical depression by midnight.
  
As the storm approaches, Jeju Island is experiencing increased rainfall and stronger winds. A typhoon advisory has been in effect for all lands and waters of Jeju since 2 p.m.
 
Rain is forecast nationwide on Wednesday. Over 100 millimeters of rain is expected for Jeju Island, southern and western coastal areas, and Mount Jiri through Wednesday.
  
In response to the typhoon, the interior ministry activated a Level One emergency posture, while raising the nation's crisis alert level from "attention" to "caution."