It is expected that it will snow over a wide area of Kanto Koshin from the 10th to the 11th, and there is a risk of heavy snowfall even in the plains of the southern Kanto region such as the 23rd ward of Tokyo.
On the 10th, general entrance exams for private high schools in Tokyo and Kanagawa will be concentrated, and entrance exams are scheduled for many private universities.
When and how long will it snow?
Snow caused by the south bank low pressure, which is explained as "difficult to forecast" every time.
We have summarized the outlook of the Japan Meteorological Agency as of the 9th, points to note when walking on snowy roads, and the impact on transportation.
“The evening of the 10th is completely snowy”
On the afternoon of the 9th, at the explanation held jointly by the Japan Meteorological Agency and the Ministry of Land, Infrastructure, Transport and Tourism, Mr. Yuji Adachi, director of the Meteorological Agency's Forecast Division, Meteorological Monitoring and Warning Center, said, "Since it is expected that snow and rain will start in the morning, we will start activities. I don't think it has accumulated so much during the time of day. Depending on the weather during the day, it may be completely snowy in the evening. "
It is the low pressure system that will occur off the coast of Tokaido that brings snow.
It is similar to the situation during the heavy snowfall from the 6th to the 7th of last month in the sense that there is a larger scale system, so to speak, a low pressure system at a remote location.
It is expected to start descending from dawn at an early stage, and the
period requiring caution is
▽ from the morning of the 10th to the dawn of the 11th
▽ in Koshin and Shizuoka prefecture from the morning of the 10th to the late night
.
Adachi says, "Snow turns into rain during the day, and it will snow again from night to the morning of the 11th."
Even if the snow melts, the temperature will drop in the evening, so it is possible that the snow will make your feet slippery and that transportation will be affected.
It is said that the same effect will continue on the morning of the 11th, even if the snow has stopped.
The key to the risk of bad forecasts is the “cold pool”
On the other hand, in response to the reporter's question, "What is the fluctuation range of the forecast?", Director Adachi replied, "If cold air stays near the surface of the earth, it may snow more than expected and the amount of snow may increase."
Since the Kanto Plain is surrounded by mountains, cold air may stay for several hundred meters in thickness, mainly in the north.
This is also known as the "cold pool" or "cold layer".
The "cold air pool" may spread to the southern part of the Kanto region due to precipitation, cold nights, and northerly winds. In that case, even if it rains, it may turn into snow near the surface of the earth. I have.
This time, he explains that the forecast may be "bad" and snow may continue to fall because the range of rain and snow is wider than last month.
Even "wet snow" has an effect
Another situation that is different from last month is that the temperature is high.
This also changes the nature of the snow.
Whereas it was dry snow last month, it could be "wet snow" this time.
Since "wet snow" contains water, it becomes heavier, and inland areas, snow accretion on electric wires and trees may cause power outages and damage agricultural facilities.
Also, even in urban areas, the snow may melt quickly and freeze easily, so caution is required.
Adachi said, "There is a possibility that transportation may be affected in the evening of tomorrow, and it is quite possible that it will affect our lives in the morning of tomorrow. In the case of heavy snow, refrain from going out unnecessarily. I want you to think about it. When you go out, think about your way home before you act. "
I think that going out may be unavoidable, such as for entrance exams.
Please proceed with preparations based on the fact that there are various scenarios.
Damage and countermeasures to be aware of in urban areas with little snow
We have summarized the precautions and countermeasures in urban areas where it usually does not snow much.
Fall while walking
The first thing to watch out for is a fall while walking due to snow or freezing of the road surface.
Especially in areas where you are not accustomed to snow, you may get serious injuries.
During the heavy snowfall last month, when the snowfall was 10 cm in central Tokyo and 8 cm in Tsukuba, Ibaraki Prefecture, pedestrians and bicycles fell one after another, and more than 500 people in Tokyo alone had their heads and waists. He was injured by hitting and was taken to the hospital.
When walking on a snowy road, you need to pay attention to the following points.
▽ Avoid leather shoes and sneakers.
▽ Wear non-slip shoes with grooves on the bottom and shoes with non-slip.
▽ Reduce the stride length (penguins walking).
▽ Walk with the entire sole of your shoes on the ground.
▽ Free both hands with a rucksack.
▽ Wear gloves and a hat to soften the impact when falling.
▽ When you fall, start from your hips.
Particular attention should be paid to pedestrian crossings (above the white line), slopes, roadsides, pedestrian bridges, shade, parking lots, and entrances to underground malls.
Even if it looks like there is no snow, the road surface may freeze and become slippery when it gets cold.
Check the condition of the road surface carefully and walk carefully.
Install winter tires and chains
Car slip accidents and large-scale stalling are not just problems in snowy areas.
The heavy snow last month caused a truck rollover on the Metropolitan Expressway, and some roads were stuck for about 10 hours.
The first thing to check when driving a car is the preparation of "winter tires" and "tire chains".
Driving on snowy roads with summer tires is extremely dangerous, and slipping can lead to accidents and traffic jams.
If you have already replaced your winter tires, check again to see if the rubber is worn.
It is safe to load the following items in your car in advance in case you get stuck.
▽ Winter clothes (thick jacket, gloves, blanket, body warmer)
▽ Scoop
▽ Water and food
▽ Portable toilet
Traffic impact Sky flight <18:00 on the 9th>
By air, the flight has already been canceled on the 10th for 181 flights departing from and arriving at Haneda Airport.
As of 6:00 pm, all flights have been canceled on the 10th, departing from and arriving at Haneda Airport: ▽ All Nippon Airways has 96 flights, ▽ Japan Airlines has 73 flights, and ▽ Star Flyer has 12 flights.
Airlines are calling for the latest information on their websites, etc., as the number of canceled flights may increase depending on how it snows.
Traffic impact Railway <9th 17:00>
JR East has decided to suspend 67 limited express trains such as "Azusa" and "Kaiji" on the Chuo Line connecting Tokyo and Chiba with Yamanashi and Nagano.
In addition, JR and major private railway lines in the Tokyo metropolitan area are currently scheduled to operate as usual, but we will make decisions while observing the snow conditions in the future.
Since there is a possibility that major delays and suspensions will occur in the future, railway companies are calling for them to check the latest operation status on their websites and take action with plenty of time.
Traffic impact Metropolitan Expressway
In order to prevent stalling due to the effects of snow, the Metropolitan Expressway has announced a section where there is a possibility of "planned and preventive road closure" that will be closed before full-scale snow accumulation after the 10th.
According to the Metropolitan Expressway, there is a possibility of "planned / preventive closure" in the following sections.
▽ Central Circular Line Inner and outer loops between Gangbuk Junction and Oi Junction
▽ No. 7 Komatsugawa Line Komatsugawa Junction
▽ No. 10 Harumi Line Up and Down Line between Shinonome Junction and Harumi
▽ No. 11 Daiba Line Up and Down between Shibaura Junction and Ariake Junction Line
▽ Wangan Line To the west between the airport central entrance and Daikoku Junction
▽ Saitama Shintoshin Line Up and down line between Yono and Saitama Minuma
▽ No. 7 Yokohama North Line Up and down line between Namamugi Junction and Yokohama Kohoku Junction
▽ No. 7 Yokohama Northwest Line This is the up and down line between Yokohama Kohoku Junction and Yokohama Aoba Junction.
It is said that the Metropolitan Expressway may be closed in a wider area depending on how it snows, so check the latest information on the homepage etc. and wear winter tires and chains when driving a car. I am calling.