The reason the rainy season is so slow this year is because the cold air from the north is firmly blocking the skies over the Korean Peninsula. High pressure developed near the Ural Mountains of Russia and the Kamchatka Peninsula is continuously pushing cold air from high latitudes toward the Korean Peninsula, making it difficult for the monsoon front to find a way to move north. In addition, the North Pacific High Pressure, which is the key driving force of the rainy season, has not yet secured sufficient strength, so it lacks the power to push up the stagnation front. Japan has already entered the rainy season, but the Korean Peninsula has not yet crossed the threshold of the rainy season due to the cold air mass in the north and the warm, moist air mass in the south.

To make matters worse, Typhoon No. 7 'Mekala' and Typhoon No. 8 'Higos', which occurred in the south, are making the development of the rainy season more complicated. As typhoons are moving north toward Japan and shaking up the atmospheric flow, the boundary of the rainy season front is blurring and the expansion of the North Pacific high pressure is being restricted. According to the Korea Meteorological Administration's numerical forecast model, it is unlikely that the rainy season front will move north in earnest until the end of this month, and the nationwide rainy season is expected to begin with the reorganization of the barometer only in early July. Meteorological experts view the period around July 3 as the watershed for the rainy season, and explain that the start and intensity of the rainy season will be determined by changes in air pressure at this time.

Just because the rainy season starts late, you should not let down your guard and assume that the damage will be minimal. Looking at past cases, the duration of the rainy season tends to be somewhat shorter in years when the rainy season starts late, but when the stagnation front stays near the Korean Peninsula for a long time, localized torrential rain occurs frequently, with extremely heavy rain falling in a short period of time. In particular, recent weather phenomena show a tendency to pour a lot of rain in a short period of time, so thorough preparation for flood damage is required. The fact that approximately 95% of vehicle flooding accidents that occurred over the past five years were concentrated between July and October is the most important indicator that we need to be alert to right now.

The government, local governments, and related organizations are operating a preemptive response system in response to this climate crisis. The Insurance Development Institute is operating a system that sends emergency evacuation notifications in real time to vehicle owners parked in flood risk areas, and the Ministry of SMEs and Startups has completed safety inspections and drainage maintenance for 300 traditional markets and old industrial complexes. In the agricultural field, each local government, including Hwasun-gun, took steps to minimize damage by distributing management tips for each crop, such as drainage maintenance and pest control. In addition, local governments such as Anyang City are doing their best to prevent water pollution accidents by intensively cracking down on environmental pollution practices such as unauthorized discharge of wastewater that can occur during heavy rains.