Be careful of "dense fog" tomorrow morning after the rain.Dense fog advisory issued for Kanto and Hokkaido

2024/05/13 16:06

Today, the 13th (Monday), a cold front extending from the
low pressure system is passing through Honshu.

Warm, humid air that forms rain clouds flows toward the front,
raining over a wide range of eastern and northern Japan.

The weather will improve tomorrow, but
the moisture from today's rain will remain in the air and
the temperature will drop into tomorrow morning,
there is a risk of thick fog forming tomorrow morning. there is.

As of 4 p.m. on the 13th, the dense fog advisory has been issued for Hokkaido, Gunma, Tochigi, and Ibaraki prefectures, but fog is also expected to occur along other mountains and inland areas. There is a fear.

Please be careful of poor visibility when driving on mountain roads such as expressways.

Please also pay attention to the latest weather and traffic information tomorrow morning, as there may be an impact on trains and other means of transportation.

Active rain clouds are passing through the Kanto region even in places where the 24-hour precipitation exceeds 150 mm

2024/05/13 14:06

On the 13th, a front extended to the Pacific side of Honshu, and a cold front extending from a low pressure system in the Sea of Okhotsk is passing through eastern Japan.
Warm and humid air is flowing towards the front, increasing frontal activity.
On the Pacific side, as of 11:00, there are places where the 24-hour precipitation has exceeded 150 mm.

#24-hour precipitation (as of 11:00)
Kochi Prefecture, Kami City, Shigefuji 189.5mm
Shizuoka Prefecture, Izu City, Amagiyama 178.0mm



Although the peak of heavy rain in Shikoku and the Tokai region has passed, the ground has deteriorated due to the rain that has fallen so far. There are some parts that are loose. Please be careful and be on guard against landslides.

As rain is expected to continue in the Tokai region in the afternoon, caution should be taken against flooding of low-lying areas and rising water levels in rivers. Active linear rain clouds accompanying the
front will pass mainly over the Kanto region.



Towards the evening, When the front passes, there is a risk of localized heavy rain of more than 30mm per hour.
Rain clouds will remain in Chiba and Ibaraki until around 8pm.
Before returning home, be careful of flooding on the roads.

Active rain clouds are passing through the Kanto region even in places where the 24-hour precipitation exceeds 150 mm

2024/05/13 12:55

On the 13th, a front extended to the Pacific side of Honshu, and a cold front extending from a low pressure system in the Sea of Okhotsk is passing through eastern Japan.
Warm and humid air is flowing towards the front, increasing frontal activity.
On the Pacific side, as of 11:00, there are places where the 24-hour precipitation has exceeded 150 mm.

#24-hour precipitation (as of 11:00)
Kochi Prefecture, Kami City, Shigefuji 189.5mm
Shizuoka Prefecture, Izu City, Amagiyama 178.0mm



Although the peak of heavy rain in Shikoku and the Tokai region has passed, the ground has deteriorated due to the rain that has fallen so far. There are some parts that are loose. Please be careful and be on guard against landslides.

As rain is expected to continue in the Tokai region in the afternoon, caution should be taken against flooding of low-lying areas and rising water levels in rivers. Active linear rain clouds accompanying the
front will pass mainly over the Kanto region.



Towards the evening, When the front passes, there is a risk of localized heavy rain of more than 30mm per hour.
Rain clouds will remain in Chiba and Ibaraki until around 8pm.
Before returning home, be careful of flooding on the roads.
In addition, winds are expected to strengthen mainly in the coastal areas, and it is expected to bring heavy rain.

Today's weather: Rain and wind will increase in eastern and northern Japan; weather will recover in western Japan

2024/05/13 06:23

The front will pass through today, the 13th, at the beginning of the week, so rain and wind are expected to intensify from the east to Japan. The weather in western Japan seems to be gradually heading towards recovery.



Eastern to Northern Japan It will rain in the morning due to the passing of a front.
The Tokai and Kanto regions have been experiencing heavy rain since this morning, with 29.0 mm/h observed in Mt. Amagi, Izu City, Shizuoka Prefecture, and 19.0 mm/h in Hakone, Hakone Town, Kanagawa Prefecture. The rain is also getting heavier in central Tokyo, with moderately heavy rain of 12.0 mm/h.
The wind will be strong during commuting hours, and there is a risk of heavy rain in coastal areas.
Please try to have plenty of time in the morning.
The rain is expected to continue until the afternoon in the Tokai region, until the evening in Hokuriku and Tohoku, and into the night in the Kanto region.

The weather in western Japan seems to be gradually improving.
It will rain until the afternoon in the Kinki region, and there are places where there will be heavy rain and thunderstorms in the morning, so be careful.
There will be some sunlight in the afternoon.
It seems to be easier to spend time in areas where the sun shines.

Flood warning announced in Okinawa Prefecture; very heavy rain expected before noon today

2024/05/13 05:49

The atmospheric conditions in the Okinawa region are extremely unstable due to the influence of fronts and moist air flowing into them, and extremely heavy rain with thunderstorms is falling in places.
In Naha City, Okinawa Prefecture, heavy rain has been observed with an hourly rainfall of 41.5 mm/h, and there are areas in Okinawa Prefecture where flood warnings have been issued.



#Disaster prevention matters
[Heavy Rain]
In the main island of Okinawa and the Sakishima Islands, extremely heavy rain is expected to fall at 50 mm per hour in many places until noon today, the 13th. Please be careful of landslides, flooding of low-lying areas, and rising river waters. Depending on the degree of rain cloud development, there is a risk of heavy rain reaching warning level.

#Forecasted amount of rain (in areas where there is a lot)
+Forecasted amount of rain for 24 hours until 6:00 tomorrow 14th
Okinawa Main Island region 80mm
Sakishima Islands 80mm

[ Lightning/gusts of wind]
Cumulonimbus clouds will develop in the Okinawa main island region and Sakishima Islands today, the 13th, and there is a risk of damage from lightning strikes, tornadoes, and other violent gusts. Please be careful during outdoor activities. Also, if there are signs that a cumulonimbus cloud is approaching, please take precautions such as moving to a sturdy building.
Please be careful of lightning strikes, gusts of wind, and sudden heavy rain under developed cumulonimbus clouds in the Daitojima region until tomorrow the 14th.

Tokai region: Heavy rain as front passes; Shizuoka Prefecture is on alert for landslides, flooding of low-lying land, etc.

2024/05/13 05:32

Today, the 13th, a low pressure system will move northeast over the Sea of Okhotsk, and a cold front extending from this low pressure system will pass from northern Japan to eastern Japan. In addition, another front is expected to extend toward the Pacific side of eastern Japan into the evening of the 13th, merge with the front extending from the low pressure system in the Sea of Okhotsk, and then move toward the east of Japan.
As warm and humid air flows towards these fronts from the south, the atmospheric conditions in the Tokai region become unstable, with heavy rain accompanied by thunder and extremely heavy rain falling into the early afternoon of today, the 13th. There will be a place for it.
In Shizuoka Prefecture, heavy rain is expected to reach warning level in some places. If rain clouds develop more than expected or become stagnant outside of Shizuoka Prefecture, there is a possibility of warning-level heavy rain.

[Rain live report]
Precipitation amount from the start of rain (5:00 a.m. yesterday, 12th) to 5:00 a.m. today, 13th (preliminary figures from AMeDAS)
Aichi Prefecture
Tomizawa, Shinjo City 52.5mm
Gifu Prefecture
Gujo City Hirugano 80.5mm
Shirakawa Village Miboro 68.5mm
Gujo Nagataki 67.0mm
Shizuoka Prefecture
Amagiyama, Izu City 105.0mm
Shizuoka Airport 72.0mm
Shizuoka 71.0mm



# Expected amount of rain (in most places)
+Precipitation expected for 1 hour today on the 13th
Aichi Prefecture 40mm
Gifu Prefecture 30mm
Mie Prefecture 40mm
Shizuoka Prefecture 60mm

+Until 6:00 tomorrow 14th Expected 24-hour precipitation
Aichi Prefecture 70mm
Gifu Prefecture 70mm
Mie Prefecture 80mm
Shizuoka Prefecture 130mm

[Disaster Prevention Matters]
In Shizuoka Prefecture, landslides, flooding of low-lying land, Please be careful of rising water levels and flooding of rivers. In the Tokai region, please be careful of landslides, flooding of low-lying areas, and rising river waters. Also, be careful of lightning, gusts of wind, and hail.

A front passes, rain is expected to fall over a wide area, leading to warning-level heavy rain; vigilance is needed for landslides.

2024/05/13 05:16

A cold front is extending from a low pressure system moving northeast across the Sea of Okhotsk through northern Japan and into western Japan. Today, the 13th, this front will pass from northern Japan to eastern Japan. Another front is extending from southern China to the Pacific side of western Japan. This front is expected to extend toward the Pacific side of eastern Japan into the night of today, the 13th, merge with the front extending from the low pressure system in the Sea of Okhotsk, and then move toward the east of Japan. As warm, humid air flows toward these fronts, atmospheric conditions are expected to become extremely unstable in places from the Nansei Islands to northern Japan.



#Disaster prevention matters
[Heavy rain, thunder, gusts]
From the Nansei Islands to northern Japan, there will be very heavy rain accompanied by thunder and heavy rain in some places today, the 13th.

#Expected amount of rain (in areas where there is a lot)
+Expected amount of rain in the 24 hours up to 6:00 tomorrow 14th
Kanto-Koshin region, Izu Islands 180mm
Tokai region 130mm
Tohoku Region 120mm
Okinawa 80mm

The Nansei Islands, western Japan, and northern Japan will be on alert for landslides, inundation of low-lying areas, and rivers rising and flooding from today, the 13th, and in eastern Japan until dawn tomorrow, the 14th. Be careful of strong wind gusts such as tornadoes. If there are signs that a cumulonimbus cloud is approaching, please take precautions such as moving inside a building.
There is also a risk of hail, so please be careful when managing agricultural products and agricultural facilities.

There is a risk of heavy rain over a wide area into tomorrow. Be careful of landslides, flooding of low-lying land, and rising and flooding rivers.

2024/05/12 19:15

There is a low pressure system near Sakhalin, and a cold front is extending near the Tsushima Strait. This front will pass from northern Japan to eastern Japan until tomorrow, the 13th. In addition, another front is extending from southern China to near Kyushu. This front is expected to extend to the Pacific side of western Japan today, the 12th, and to the Pacific side of eastern Japan until tomorrow, the 13th. As warm, humid air flows toward these fronts, atmospheric conditions are expected to become extremely unstable in places from the Nansei Islands to northern Japan.




#Disaster prevention matters
[Heavy rain, thunder, gusts]
From the Nansei Islands to northern Japan, there will be extremely heavy rain accompanied by thunder and heavy rain in some places until tomorrow the 13th.

#Forecasted amount of rain (in areas where there is a lot)
+Forecasted amount of rain for 24 hours until 18:00 tomorrow 13th
Tokai region 250mm
Kanto-Koshin region, Shikoku region 180mm
Izu Islands, Kinki region 150mm
Tohoku region, Okinawa region 120mm

From the Nansei Islands to northern Japan, landslides, flooding of low-lying areas, Be wary of rising water levels and flooding of rivers, and avoid lightning strikes, tornadoes, etc. Be careful of strong wind gusts. If there are signs that a cumulonimbus cloud is approaching, please take precautions such as moving inside a building.
There is also a risk of hail, so please be careful when managing agricultural products and agricultural facilities.

Tomorrow (Monday): Stormy weather across the country. Heavy rain possible during commutes to and from school. Be prepared for heavy rain.

2024/05/12 14:16

Today, the 12th (Sunday), the rain is increasing mainly in western Japan due to the influence of a front extending from a low-pressure system near Primorye and
from another continent near Kyushu.

Tonight, extremely heavy rain like waterfalls will fall in western Japan,
Tomorrow (Monday), extremely heavy rain will fall on the Pacific side of eastern Japan,
A wide range of areas will be at a warning level. There is a risk of heavy rain.



Tonight's rain clouds Let's take a look at the predictions.

Warm and humid air heading towards the front is flowing into western Japan,
especially in Shikoku and Kyushu, where the signs are yellow and red,
where there are likely to be heavy or very heavy rain. .

Rain is also beginning to fall on the Sea of Japan side of northern Japan and Hokuriku, which are close to the front, and it is likely to become a localized downpour.



Tomorrow(Monday) ), the center of active rain clouds shifts to eastern and northern Japan.

In eastern Japan, including the Kanto region, it will rain throughout the day,
especially during the morning commute to and from school.
The rain is likely to be so heavy that roads will turn into rivers.

Also, it was pouring rain when I was heading home in the evening, and
the wind was strong in coastal areas, so even if I had an umbrella, my clothes might get wet.

In preparation for heavy rain or rough weather tomorrow, it would be a good idea to bring a large sturdy umbrella,
boots, a raincoat, and a towel.



Alarm grade Looking at the possibility of heavy rain,
tonight until dawn tomorrow (Monday) in Kyushu and the Tokai region,
from tomorrow (Monday) morning to evening on the Pacific side of Kinki and Tohoku.
Warning-level heavy rain is possible.




It's about time The season of heavy rain is approaching.
Tomorrow's rain is likely to be the first heavy rain of the season in some places.

Revisit your preparations for heavy rain,
If a heavy rain disaster occurs, check where to evacuate,
route to take, etc. using
hazard maps, etc. .

Okinawa: unstable until tomorrow 13th (Monday); watch out for severe thunderstorms

2024/05/12 05:39

The Okinawa region is expected to experience extremely unstable atmospheric conditions through tomorrow, the 13th (Monday) due to the front and moist air flowing into it.

In the main island of Okinawa and the Sakishima Islands, heavy rain is expected to fall at a rate of 40mm per hour in many places until tomorrow, the 13th (Monday). Please be careful of landslides, flooding of low-lying areas, and rising river waters. Depending on the degree of rain cloud development, there is a risk of heavy rain reaching warning level.



#Forecast rainfall

Forecast rainfall for 24 hours until 6:00 am on the 13th (Monday) tomorrow (in areas with the most)
Okinawa main island region 80mm
Sakishima Islands 100mm
Then, until 6:00pm on the 14th (Tuesday) the day after that 24-hour forecast rainfall (in heavy areas)
Okinawa Main Island region 50-100mm
Sakishima Islands 50-100mm

Cumulonimbus clouds will be expected in Okinawa Mainland region and Sakishima Islands through tomorrow 13th (Monday) There is a risk that the storm will develop and cause damage from lightning strikes, tornadoes, and other violent gusts. Please be careful during outdoor activities. In addition, if there are signs that a cumulonimbus cloud is approaching, please take precautions such as moving to a sturdy building. In the Daitojima region, please be careful of lightning strikes, gusts of wind, and sudden heavy rain under developed cumulonimbus clouds tomorrow, the 13th (Monday).