June 17, 2013 12:15
Heavy clouds heralded rain on Monday morning, marking the official start of the monsoon season.
The Korea Meteorological Administration said rain will scatter as a cold air mass from the North collides with a hot air mass and destabilize the atmosphere.
It predicted that over 20 mm of rain per hour accompanied by thunder and lightning will fall in the central regions from early Tuesday morning, moving to southern parts in the afternoon and to the south coast and Jeju on Wednesday.
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