On Wednesday the 21st, most areas nationwide will continue to see a strong cold snap with morning lows around minus 10 degrees and daytime highs at or below 0.
According to the Korea Meteorological Administration and others on the 20th, morning lows are forecast at minus 17 to minus 4 degrees, with daytime highs at minus 6 to 3 degrees.
Skies will be mostly clear nationwide, while the Chungcheongnam area, the Jeolla region and Jeju will be mostly cloudy.
Snow will fall from dawn along the Jeolla west coast and on Jeju, and from the morning in the southern inland of North Jeolla and in Gwangju and the central inland of South Jeolla. From late afternoon, snow is forecast for the northern inland of Chungcheongnam and the central and southern parts of Chungcheongbuk, and from night along the western South Jeolla south coast.
There will be places with flurries under 0.1 centimeter in Chungcheongnam, the central and southern parts of Chungcheongbuk, and the Jeolla region (excluding the Jeolla west coast).
Expected snowfall over the two days through the 22nd is 1 to 3 centimeters on the five West Sea islands; around 1 centimeter in Sejong, the northern inland of Chungcheongnam, and the central and southern parts of Chungcheongbuk; 3 to 8 centimeters along the southern West Sea coast of North Jeolla, the West Sea coast of South Jeolla, and coastal Jeju (10 centimeters or more in heavier Jeolla areas); 1 to 5 centimeters in Gwangju, the central inland of South Jeolla, the western South Sea coast, the northern West Sea coast of North Jeolla, and the southern inland; 5 to 20 centimeters in the highlands of Jeju (25 centimeters or more in heavier spots); and 5 to 15 centimeters in Jeju's mid-mountain areas.
Expected precipitation is around 1 millimeter on the five West Sea islands, Sejong, the northern inland of Chungcheongnam, and the central and southern parts of Chungcheongbuk; 5 to 10 millimeters along the southern West Sea coast of North Jeolla and the West Sea coast of South Jeolla; under 5 millimeters in Gwangju, the central inland of South Jeolla, the western South Sea coast, the northern West Sea coast of North Jeolla, and the southern inland; 10 to 30 millimeters on Ulleungdo and Dokdo; and 5 to 20 millimeters on Jeju.
Heavy snow of 1 to 3 millimeters per hour is forecast along the southern West Sea coast of North Jeolla, the West Sea coast of South Jeolla, Ulleungdo, Dokdo and Jeju, so caution is advised to prevent accidents.
Fine dust levels will be at a "good" level nationwide.
Waves will run 1.0 to 3.5 meters off the East Sea, 1.0 to 3.0 meters off the West Sea, and 0.5 to 3.0 meters off the South Sea. On the outer offshore waters (the open sea within about 200 kilometers from the coastline), wave heights are expected at 1.5 to 4.0 meters in the East and South seas and 1.0 to 4.0 meters in the West Sea.
Forecast lows by major city: ▲ Seoul minus 13 degrees ▲ Incheon minus 14 degrees ▲ Daejeon minus 11 degrees ▲ Gwangju minus 6 degrees ▲ Daegu minus 9 degrees ▲ Busan minus 5 degrees ▲ Ulsan minus 7 degrees ▲ Jeju 1 degree.
Forecast highs: ▲ Seoul minus 5 degrees ▲ Incheon minus 6 degrees ▲ Daejeon minus 3 degrees ▲ Gwangju 0 degrees ▲ Daegu 0 degrees ▲ Busan 2 degrees ▲ Ulsan 1 degree ▲ Jeju 2 degrees.