[News Now] 20cm of snow from the first snow in freezing cold...Until when should I get off?

■ Host: Anchor Kim Sun-young and Anchor Jung Ji-woong
■ Starring: Airport staff YTN Disaster Advisory Committee

* The text below may differ from the actual broadcast content, so please check the broadcast for more accurate information. Please specify [YTN NewsNOW] when quoting.

[Anchor]
This time, we will point out how much more snow will fall in the future with the YTN Disaster Advisory Committee. Welcome. This year, heavy snow began almost from the first snow so that the weather could not be predicted.

[Airport Jin]
As you know, you had a 10cm view yesterday. It's a little difficult to predict 10cm at first sight. Even if it's expected, there aren't many cases. But 20cm of snow fell. It's no exaggeration to say that it's a record-breaking snowfall. The weather that continues this year is the first weather we experience. The weather that didn't exist before, these things are appearing. It's the first time you've experienced such heavy snow at the beginning of winter. The snow currently piled up in Seoul is about 15cm. 16. It built up to 5cm and then melted a little. I wonder how much snow it will fall, but I don't know exactly how much it will fall. Because it melts when it falls. So when you're looking at the forecast, you're looking at the amount of snow. How much will it stack up? If the weather is warm, it melts right away even if it snows a lot, so it doesn't matter, but the problem is that it's cold.

[Anchor]
In the case of Seoul, the highest snowfall in November for the first time in 117 years?

[Airport Jin]
As I said earlier, snow accumulates, and some record how much it accumulates a day, and some see how much more snow accumulates and how badly it accumulates. How much accumulated a day is called the divine snow theory, and how much accumulated we usually have is called the snow theory. In the case of Seoul, the most recent new snow, that is, snow in a day, was recorded at 9.5cm in 1996. The record was broken because 16.5cm was recorded today. You can think of it as the first snow in 117 years. And the most snow accumulated in November was 12.4cm on November 28, 1972, and this record was also broken. So this first snow can be considered heavy snow. 117 years, so it's the first phenomenon we've seen since we started observing it, so you can look at it like this.

[Anchor]
We came here more overnight than we expected yesterday. Why is that?

[Airport Jin]
That's how much water vapor is currently in the atmosphere. It rained a lot this summer, too. To see how much rain or snow falls when it falls, you have to see how much water vapor is contained in it. The water vapor becomes clouds and condenses and falls. But yesterday, the clouds passing south passed first. The cloud passing south is a hot cloud. Wasn't the temperature relatively high these days? There was a lot of water vapor while the temperature was higher than usual, but the cold air suddenly approached from the north, so the low pressure developed. As it develops further, the water vapor supplied also appears to have fallen slightly more than expected.

However, the snow is different from the comparison, so if the snow comes in at 20cm, it is only about 30mL in terms of water. However, the composition of the eyes is not good. That's why it's harder to predict a lot of snow because it's not dense. It may be easy to reduce precipitation by 5mm or 10mm. It's not easy to lower 5cm or 10cm more.

[Anchor]
Heavy snow warnings have been issued throughout the country in Gangwon and Jeonbuk regions of the metropolitan area. In what circumstances and at what level does the heavy snow warning come into effect?

[Airport Jin]
You probably know it from your experience, but if you brought a car on your way to work, it would be a mess even if you go down 3cm or 5cm in Seoul, if the snow doesn't clear up properly. So the heavy snow warning is based on 5cm. You have to be careful when you drop 5cm. If snow removal is not done, there may be a big confusion. The heavy snow warning is 20cm. So, a heavy snow warning has been issued in the Seoul area. There's a possibility of 20cm. In particular, in the case of mountainous areas, it snows a little more, so a heavy snow warning is issued when it is over 30cm. The standards for heavy snow warnings are lower than I thought. Even if it's only 5cm, a heavy snow warning is issued because if the snow isn't cleared properly, especially in large cities with a lot of traffic, if it's pushed a little bit in front of you, there's literally confusion. I'm sure you've experienced that a lot, but why do you get pushed back while driving? If you go there, there's nothing clogged. If you slow down in front of you, you'll get stuck in the back. Even if it snows a little bit like this, it can't speed up, so there can be a lot of people. Of course, it's for safety, but I'm telling you to use public transportation because if you expect to go for about an hour, it could be longer, so I'm telling you that it's better to use public transportation.

[Anchor]
If you look at the characteristics of this snow, it is said to be a wet snow. hold water How is this custom formed?

[Airport Jin]
If you look at snow clouds under a microscope, you'll remember that some have ice crystals, and if you look at snow clouds, they're hexagonal. In the meantime, it's a condition that something can go in. When it comes to wet snow, there are many cases of well-developed eyes in hexagonal shapes. It contains a lot of water vapor. It's more humid than hard powdered snow, so we usually get big eyes. It's good to make a snowman. It's because it's too humid. So it's heavy because a lot of water vapor goes into it. It is about three times heavier than normal dry construction. Because it is this heavy, even if the snow is only about 30cm, the facility will be damaged. These days, it is less because greenhouses are built strong rather than very easily as before, but in the case of a greenhouse built in the past, even if only 30cm of snow accumulates, it can collapse. So it's heavy snow that directly affects the facilities, you can see it like this. The reason is that there is a lot of water vapor.

[Anchor]
It's still snowing, how long does this snow last?

[Airport Jin]
There were two possibilities that something unusual could snow this time. Yesterday, as I said earlier, it mainly sprayed snow as the low pressure developed over the rain clouds in the south passed. The snow-sprayed areas were mainly in the central and northern parts of the country, and the areas where heavy snow warnings or warnings were issued this morning were Seoul, Gyeonggi and Gangwon. From tonight, there is cold air and very cold air in the upper 5km. There is a cold air of about 40 degrees, and this cold air comes down and affects it. When the cold air comes down, the sea is warm. So snow clouds form as you pass through the ocean. Clouds form like a mist. If it develops, it can spray a lot of snow, but it depends on the direction of the wind. So at first, the northwest wind blows, so it mainly affects the west coast or this side, and then the wind changes to the west wind, affecting the central region. It's snowing for the second time tonight, you can see it like this. So it looks like this snow is going to go back and forth for about two days. [Anchor] More people are coming than today? The amount

[Airport Jin]
itself looks similar. The southern part of the country receives more than today. The southern part of the country doesn't fall that much today, but the southern part of the country will fall more tomorrow. Snowfall of up to 20 to 30cm is expected in the mountains. That's how much it accumulates. And up to 10cm of snow will be piled up in the Seoul metropolitan area. 5cm is a lot of difficulty before, but you have to be careful because it's 10cm. [Anchor] And I'm curious that the temperature will drop tomorrow?

[Airport Jin]
When it snows, the snow is white. Then it reflects the sun's light. Then the heat on the ground will not be transferred. So when it snows, the temperature drops a little more than usual on the day after it snows. The forecast is for the central part of the country and most of the southern inland areas are below zero. When I came in, the temperature in Seoul went back and forth around 0 degrees, and I think the snow removal is good. That's why it's melted a lot. But the problem is that it melts at night. It freezes at night and then it snows again. That's why you don't know where it's slippery when you look at it. So it can be very dangerous.

Also, there is a possibility of thin ice on the road. Snow removal has been completed, but there is a possibility that the melted snow freezes as the temperature drops again at night. Of course, you will do snow removal, so tomorrow morning is likely to be slippery than today. So it's better to be prepared for slippery roads.

[Anchor]
You mentioned snow removal, so what are the responses that each household can do while it's snowing?

[Airport Jin]
You can pay less attention to the big roads, of course I'm not saying to pay attention. In the case of a side road, it's not easy to remove snow. Every time you tell me to clean up the snow in front of your house, but it's not easy. There is a high possibility of freezing due to a lot of accumulation, so it's better to be careful especially in alleys and high roads. You still use public transportation tomorrow, especially for those who bring a car because they can't afford to, slow down, spread the distance from the car in front of you, and suddenly apply the brake, the car turns. That's why you should be careful about those things. I'm sure everyone who drives has some preparations, so don't forget those preparations and be more careful.

[Anchor]
I keep saying that I can't predict the weather these days, but since it snows from the first snow, how much snow is going to fall this winter, but there's a story like this.

[Airport Jin]
I also want to tell you that it will snow to some extent this winter, but the Korea Meteorological Administration makes a forecast. It's not called a forecast. That's because the outlook is less reliable. But it's hard to predict even a day or two. But it's hard to predict winter in the long run. However, on average, how different is the temperature than what was experienced in the past 30 years? I'm looking at this. At first, December alone will be similar to or slightly lower than the average year. So many places expressed that this winter's cold is coming, but this changed. The direction has changed than expected in December that the temperature will be a little lower. The hot air in the south is likely to affect it. So, December, January, and February are all forecasting temperatures similar to or slightly higher than usual. So, the extreme cold is not likely to continue indefinitely, but the trend is fluctuating these days. You went through it this summer, too. It's hot, but it's raining a lot. So I think this temperature will be large in winter. When it's cold, there will be days when it drops below minus 15 degrees Celsius.

[Anchor]
It's cold and snowing continuously, but isn't there a strong wind forecast here? Are you concerned about the damage caused by this strong wind?

[Airport Jin]
Usually, when the cold comes in, when the cold air comes in, how to express it is usually when the mountain is high and the valley is deep, the current is strong. When such a strong high pressure comes, the pressure difference increases. So there's a strong rush of air. That's why there's a strong wind. So when it's cold, you can see strong winds, snow, and rain coming together. It is less than yesterday, but strong winds of 20m per second are expected to continue today.

[Anchor]
Since a lot of snow is predicted tonight, the weather is cold, so icy roads are expected. I think each local government should thoroughly remove snow. I pointed out the situation related to heavy snow with YTN Disaster Advisory Committee member. Thank you for talking today.