Korea is bracing for a season of tropical nights as the entire country is under either a heatwave warning or advisory.<br /> The mid-day temperature for the capital city of Seoul today reached 33 degrees Celsius... while in the southeastern city of Gyeongju and Yeongcheo it got up to 37 degrees.<br />Heat wave advisories are issued when the mercury level is forecast to stay above 33 degrees for at least two days in a row, and warnings go out when it's staying above 35. <br />
