139mm of Heavy Rain on Hallasan; Rain and Strong Winds in Southern Regions and Jeju Due to Typhoon Champi. Heavy rain poured across Jeju, with a maximum of 139mm falling on Hallasan Mountain by the morning of the 24th. Due to the influence of Typhoon Champi (Typhoon No. 30), rain will continue until the 26th, mainly in Jeju and the southern regions, accompanied by strong winds. 24th..