This week’s weather: Spring returns to mid-winter cold; prolonged rain due to stationary front; fear of heavy rain in western and eastern Japan
February 18, 2024 17:20
This week’s weather points are “severe temperature differences” and “heavy rain”. The first half is full of spring, but the second half is back to the cold of mid-winter. The front is stationary near Honshu, resulting in unseasonably long rains, and from around the 20th (Tuesday) to the 22nd (Thursday), there is a risk of heavy rain in western and eastern Japan, so vigilance is required.
Front stagnates, causing unseasonably long rain
Tomorrow, the 19th (Monday), a front is expected to gradually move south from the Sea of Japan, while another front from the west is expected to move east. Heading toward the front, seasonally warm air is expected to flow into northern Japan, causing temperatures across the country to be significantly higher than normal. In particular, northern Japan will experience record warmth. Due to stronger winds from the south, there is a possibility that it will be the first of spring in northern Kyushu.
From the 20th (Tuesday) onwards, the front is expected to remain near Honshu. From around the 22nd (Thursday), warm, humid air will flow toward the front, causing heavy rain, especially from Kyushu to the Kanto region. In Ishikawa Prefecture, there is a possibility of warning-level heavy rain from the 20th (Tuesday) to the 21st (Wednesday), so vigilance is required.
19th (Monday) The weather is downhill, the southerly wind is strong and it’s the first of spring.
Tomorrow, the 19th (Monday), the weather will be downhill nationwide. In western Japan, it will be raining during the morning commute to work and school, and in some places it will be heavy with thunder. Rain is expected to start in the afternoon in eastern and northern Japan. Winds from the south are becoming stronger nationwide, and there may be announcements of “spring weather” in northern Kyushu and Kinki.
“Haru Ichiban” is a “spring storm” that brings stormy weather, so caution and vigilance are required.
Fear of unseasonable heavy rain
It will rain nationwide on the 20th (Tuesday), and after this rain, cold air in the upper atmosphere is expected to move southward. There will be more snowy days in Hokkaido and Tohoku, and the snow may become stronger in some places. On the other hand, from Kyushu to Kanto, it rained intermittently from around the 23rd (Friday), and from the 20th (Tuesday) to the 22nd (Thursday), active rain clouds appeared one after another, with the amount of rain expected to exceed the amount of rainfall in one month of February. There is a risk of heavy rain.
February has the lowest rainfall of the year, especially in central Tokyo, but rain is expected to exceed the average rainfall in February in some places from Kyushu to Kanto. Please be careful about flooding of roads.
Returning from the onset of spring to the coldness of mid-winter
Tomorrow, the 19th (Monday), the temperature is expected to rise even more than today, the 18th (Sunday), setting a record for northern Japan. The predicted temperature is 14℃ in Sapporo, 15℃ in Hakodate, and 18℃ in Aomori. If it rises as expected, it is expected to renew its top spot in February at these locations.
In Hokkaido, the highest temperature ever recorded in February was 15.8℃ (Utoro, Shari Town: February 25, 2010), but there is a possibility that this record could be broken.
From Kyushu to the southern part of Tohoku, there are places where temperatures can reach around 20 degrees Celsius. This is the first time in 20 years since 2004 that Niigata City has experienced temperatures above 20℃ in February. The area around Hokuriku is also likely to experience record warmth for this time of year.
On the 20th (Tuesday), temperatures are expected to rise to around 20℃ in places from Kyushu to Kanto, and 22℃ in central Tokyo, similar to early May temperatures.
However, on the 21st (Wednesday), temperatures will drop sharply in various places, and Sapporo will continue to experience midwinter days with maximum temperatures below 0℃. It’s getting colder in central Tokyo, and there are likely to be days when temperatures are in the single digits, below 10 degrees Celsius.
This week’s weather highlight is that the weather is returning from the onset of spring to the cold of mid-winter. Please be careful about your physical condition as the temperature changes will be very large.
Temperatures will rise in the first half of this week, so be careful of melting snow disasters
As the weather gets warmer, we are worried about disasters caused by melting snow. In places with large amounts of snow, the following three disasters may occur as the snow melts due to rising temperatures and rain.
① “Full-thickness avalanches” are more likely to occur due to melting snow. This is a phenomenon in which all the snow that has piled up on a mountain slides down, and it often occurs when the temperature rises or after rain. Be especially careful on slopes where avalanches have occurred in the past or where there are cracks in the snowpack.
② A large amount of water seeps into the ground due to melting snow, loosening the ground and causing landslides. Be especially careful in mountainous areas and on steep slopes.
③ If the temperature rises or it rains on roads covered with a lot of snow, there is a risk of flooding. This is because snow that collects on the roadside can impede drainage, and snow particles can block drainage ditches. If it rains after heavy snow, even if it is not a heavy rain, please be careful about flooding of roads.
In addition, more snow will fall from the roof, so you need to be careful when removing snow from the roof or working near the eaves.
Latest articles (weather forecaster)
Related Links
2024-02-18 08:20:51
#weeks #weather #Spring #returns #midwinter #cold #prolonged #rain #due #stationary #front #heavy #rain #feared #western #eastern #Japan #weather #forecaster #Rika #Fukutomi #February #tenki.jp
