On Tuesday the 24th, most areas nationwide will see rain or snow. On Jeju Island, rain will begin before dawn and is expected to expand nationwide in the morning.
This rain is due to a low pressure system moving up from the south. Rain is expected mainly on Jeju Island and along the southern coast. Jeju could see as much as 80 mm of heavy rain. Busan, Ulsan and South Gyeongsang are forecast for 10–40 mm, and Daegu and North Gyeongsang for 5–30 mm.
By contrast, some inland areas are likely to see snow. Western inland parts of North and South Gyeongsang could get 3–8 cm, with more than 10 cm in places. The southern mountains of Gangwon are expected to see 2–7 cm, North Chungcheong 1–5 cm, and southern Gyeonggi around 1 cm. In Seoul and the greater capital area, precipitation is more likely to be rain than snow, and amounts should not be large.
With low temperatures, rain or melting snow may refreeze, creating black ice and icy roads. The Korea Meteorological Administration urged, "Please pay particular attention to traffic safety and pedestrian safety."
The rain and snow this time could partly ease the dry weather advisories. With recent wildfires continuing, there is interest in whether the rain will help suppression. The wildfire in Hamyang, South Gyeongsang, is now in its third day.
An official at the Korea Meteorological Administration said, "During the Daegu wildfire last year, 1–2 mm of rain fell and helped with suppression," and noted, "This time, too, it could provide some help, but it may vary depending on the scale of the fire and the suppression situation." However, the official added, "Depending on the pressure pattern after the precipitation, there is also a possibility that dry weather advisories will be reissued." .