Most parts of the country, except Ryanggang and Jagang provinces, witnessed a small amount of rainfalls on May 13-14, with no effect on the drought.

Starting from late April, the country experienced the highest daytime temperature. The temperature began to lower a little than an average year from mid-May but has gone up since May 18.

The high temperature has made the rate of overall soil humidity remain under 65 percent.

Water level of the country's major irrigation reservoirs stands at 55.4 percent on an average. Water storage in Lake Kumsong in South Phyongan Province dropped even to 0.5 percent, in particular.

Affected by alternate high and low pressures, rainfalls are believed to be usual in springs in Korea.

But, in this spring cold air, which should have come towards the south, continues to stay in the north while the warm and dried air persistently come from continents on middle latitudes, causing a long-time drought in Korea.

Such an atmospheric phenomenon is said to last until early June only to cause drought.