Kanto, Koshin, Tokai region: fears heavy rain will continue in the same location; beware of heavy rain disasters

2025/07/15 07:54

A low pressure system is slowly moving through the western Sea of Japan. In addition, a Pacific high pressure system surges over Japan's East Sea.
With the warm, humid air heading towards the low pressure system and the warm, humid air surrounding the Pacific High Pressure, extremely developed rain clouds are spreading on the eastern Japan Pacific side, mainly in the Tokai region.
As of 7:40am today, the 15th, heavy rain warnings and flood warnings have been issued in Kanagawa, Shizuoka, and Yamanashi prefectures.



In the Tokai region, there is a place where extremely heavy rainfall is poured with lightning, and a linear precipitation zone may occur until midday, the 15th, causing the risk of heavy rain disasters to rise dramatically.
On the 15th, rain will fall intermittently in the Kanto region, causing heavy rain, locally accompanied by thunder.
If the rain clouds develop more than expected or if the rain clouds continue to hit, the area where the warning is issued may expand.



On the 16th, rain will continue in similar areas on the eastern Japan Pacific side due to the effects of warm, humid air towards the south, and there will be some localized heavy rain and extremely heavy rain with lightning. The total rainfall from today, around the 15th to the 18th, could reach 400 mm in most parts of the Kanto region and over 500 mm in Tokai.



In the Kanto, Koshin, and Tokai regions, please continue to be vigilant against landslides, flooding of low land, rising rivers and flooding.
Also, be careful of severe gusts of wind such as lightning strikes and tornadoes.
Please be careful when managing crops as there is a risk of hail falling.

Typhoon No. 5 lands near Cape Erimo, Hokkaido around 2am on the 15th

2025/07/15 03:06

Today, the 15th (Tuesday), around 2am, Typhoon No. 5 landed near Cape Erimo in Hokkaido.


This is the first time in nine years since Typhoon No. 11 in 2016, and this is the first typhoon to land in Japan this year.

#Typhoon No. 5 - Tuesday the 15th, 2am
====
Center location: Approximately 30km northwest of Cape Erimo Movement speed: North: 55km/h
Center pressure: 994hPa
Maximum wind speed: 23m/s (near the center)
Maximum instantaneous wind speed: 35m/s
===

Typhoon No. 5 is expected to continue to move towards the Sea of Okhotsk while maintaining its speed in the future, and is expected to turn into a temperate cyclone around noon today, the 15th.
In Hokkaido, very strong winds will blow southward, mainly on the Pacific side of eastern Hokkaido, and there will be areas where heavy rain will be accompanied by thunder. The maximum expected instantaneous wind speed is expected to be 30 m/s on land in the eastern Pacific Ocean and 35 m/s on sea. There is a risk of a very strong wind blowing so that a sign or something like that will blow.
Please be careful of low land flooding due to heavy rain, landslides, and flooding rivers, and be careful of damage caused by extremely strong winds to flyaways. In addition, in coastal areas and at sea, we need to be vigilant against high waves accompanied by swells today, the 15th.

Tokai region: risk of linear precipitation zones; beware of heavy rain disasters

2025/07/14 20:35

Low pressure is almost stagnant in the western Sea of Japan. In the vicinity of the Kii Peninsula in western Japan, extremely warm and humid air from tropical origin flows into the low pressure system. As of 8:10pm today, the 14th (Monday), a developed strip of rain clouds have passed around the Shima Peninsula. In the Tokai region, due to the warm, humid air towards the south, rain clouds have been exposed to developing areas around Shizuoka Prefecture, causing the rain to become stronger.






From now on, there will be places in the Tokai region where extremely heavy rain will occur with 50 to 70 mm of lightning per hour from tonight to the day, the 15th. Rain can continue in the same location, causing linear precipitation zones to rapidly increase the risk of heavy rain disasters.

In the Tokai region, the 24-hour rainfall expected by 6:00 pm tomorrow, the 15th, is expected to reach 250 mm at high places. Heavy rain continued around the 17th, and the expected total rainfall around the 17th could reach 500-600 mm.



In the Tokai region, beware of landslides, low-level flooding, river flooding and flooding. Also, if you live near rivers or in areas where landslides are at risk, be careful of the latest weather information and evacuation information released by local governments.

Typhoon No. 5 approaches Kanto, wary of sudden stormy weather in Kanto and Tohoku Even if you leave quickly, the Kanto Warning level heavy rain will continue to dawn.

2025/07/14 12:47

# Typhoon No. 5 approaches Kanto Wary of sudden stormy weather in Kanto and Tohoku Landing in Hokkaido
Typhoon No. 5 is heading north southeast of Choshi City, accompanied by a storm zone.
In Chiba, Ibaraki, and Fukushima prefectures, there are places where storm warnings have been issued, mainly in the coastal areas.



After this, we will head north from Tokai in the Kanto region off the coast of Sanriku with a storm zone.
It is expected to approach Kanto in the afternoon and tonight to approach Tohoku, and head northwards quite close to Miyagi and Iwate prefectures.
For this period, the movement speed is fast, so be careful of sudden storms.
The rain and wind will suddenly increase at the closest point, with localized heavy rain of over 30mm per hour with lightning, and in Tohoku, extremely heavy rain of over 50mm per hour.
Also, extremely strong winds will blow over the seas from Kanto to Tohoku, with a maximum instantaneous wind speed of 35 meters. It will be a huge swell with a swell.



Even on land, the maximum instantaneous wind speed is expected to be 25 meters on the coast.
Tomorrow, the 15th (Tuesday), it is expected to continue to be in a state of barge at sea in the Kanto region and a major barge at sea in the Tohoku region.
Please be careful of high waves accompanied by storms and swells from today, the 14th (Monday) in Kanto, and from the evening of the 14th (Monday) to the afternoon of tomorrow, the 15th (Tuesday), in Tohoku, from the evening of today, the 14th (Monday), before noon.


It is expected to land on the Pacific side of Hokkaido tomorrow morning, the 15th (Tuesday), and tomorrow, the morning morning, the 16th (Wednesday), a temperate cyclone is expected to change to the east of the Kuril Islands.
There will be a very strong southerly wind on the Pacific side of Hokkaido tomorrow, the 15th (Tuesday), and the sea will be a huge rock with swells. Beware of high waves.
Also, heavy rain with lightning may fall, causing heavy rain in the eastern Pacific Ocean.

#The typhoon quickly moved northward. Warning-level heavy rainfall in Kanto as soon as the next day



Today, the 14th (Monday), a low pressure system in the western Sea of Japan is moving north, and is expected to move to the northeastern district of China by the next day, the 16th (Wednesday).
On the other hand, tomorrow, on Wednesday the 16th, a Pacific high pressure system will surge south of Japan.
In the Kanto region, warm, humid air flows towards the low pressure system and warm, humid air flows around the edge of the Pacific high pressure system, as well as the effects of the cold air above, are expected to make the atmosphere extremely unstable.
There will be some areas where there will be very heavy rain with lightning and heavy rain.
Typhoon No. 5 will quickly move north, leaving Kanto tomorrow, the 15th (Tuesday), but in the Kanto region, fears of heavy warning-level rain are expected to continue tomorrow, the 16th (Wednesday).
Even if the typhoon is far away, beware of heavy rain disasters for the past few days.

Typhoon No. 5 approaches Kanto region, beware and beware of heavy rain disasters

2025/07/14 07:45

Typhoon No. 5 is located about 190km east of Hachijojima at 6am today, the 14th, and is moving north-northwest at a speed of 35km/s. The central pressure is 985hPa, the maximum wind speed near the center is 25m/s, and the maximum instantaneous wind speed is 35m/s.

Typhoon No. 5 will develop in the future and will head north east of Kanto, and will approach the Kanto region from the Izu Islands today, the 14th. Additionally, tomorrow, the 15th, we will proceed to the Hokkaido region, and although the typhoon will be absent, it is expected to continue to be affected by warm, humid air. For this reason, the atmosphere will become unstable in the Kanto-Koshin region by tomorrow, the 15th.


In the Kanto region, today, the 14th, we need to be vigilant against high waves accompanied by storms and swells. In addition, in the Kanto-Koshin region, the 15th, beware and beware of landslides caused by heavy rain, flooding of low land, and rising rivers, and be careful of lightning strikes and gusts of wind. After that, please be aware of the latest information as there is a risk of heavy rain on the 16th tomorrow.



[Wind Prediction]
In the Kanto region and the Izu Islands, strong and extremely strong winds are expected to blow, mainly at the sea, on the 14th.
#Expected wind strength
+Maximum wind speed expected today (maximum instantaneous wind speed)
Under the Kanto region: 25m/s (35m/s)
Izu Islands: 18m/s (25m/s)
Underground in the Kanto region: 18m/s (25m/s)

[Wave prediction]
In the Kanto region, swells will be a major rock today, the 14th, and tomorrow, the 15th will be a barge. It is expected that the sea will be accompanied by swells by tomorrow, the 15th.
#Expected wave height
+Expected wave height (with swell)
Kanto region: 6m
Izu Islands 4m
+Expected wave height to tomorrow, the 15th
Kanto region: 5m
Izu Islands 5m




[Rain Prediction]
The warm, humid air flowing towards the typhoon will unstable the atmosphere, and in the Kanto-Koshin region, heavy rain with lightning is expected to fall from the morning of the 14th to the late night of the 15th. If the typhoon's path, degree of development and developed rain clouds continue to hit more than expected, there is a possibility that heavy rain will occur at an alarm level.
#Expected amount of rain (at a large location)
+1 hour precipitation expected today on the 14th
Northern Kanto region 40mm
South Kanto region 40mm
Koshin region 40mm
Izu Islands 30mm
Expected 15th
Northern Kanto region 40mm
South Kanto region 40mm
Koshin region 40mm
Izu Islands 30mm
+24-hour precipitation expected by the dawn tomorrow, the 15th: Northern Kanto region 120mm
Southern Kanto region 120mm
Koshin region 100mm
Izu Islands 80mm
+24-hour precipitation expected by the dawn tomorrow,
150mm
Southern Kanto region 150mm
Koshin region 120mm
Izu Islands 80mm

Weather today, Monday the 14th: Typhoon approaches the Kanto region; warning of increasing rain and wind; careful of heavy rain in western Japan as well

2025/07/14 05:57

Typhoon No. 5 is expected to approach Kanto today, Monday the 14th. Furthermore, due to the effects of the low pressure system, rain will fall in western Japan, and there is a risk of heavy rain.



In Kanto, Typhoon No. 5 is approaching, so it's likely to rain. Please bring a sturdy umbrella when you go out, as there is a risk of rain hitting the coastline.
It will rain in the afternoon on the Pacific side of Tohoku, and it will rain in Hokkaido at night. Be careful of the increasing rain and wind, mainly on the Pacific side.


In western Japan, umbrellas will be a popular day due to the effects of low pressure.
Rain is expected to fall in Okinawa and Kyushu, mainly in the morning. The sunny weather is likely to gradually return to the afternoon. The rain clouds will gradually move eastward, and rain will gradually begin to fall in Chugoku, Shikoku and Kinki as well. Please bring rain gear when you go out even if it's not raining.
Rain is expected to start falling in Tokai and Hokuriku at night. Due to the influence of humid air coming in from the south, extremely heavy rain will fall, mainly on the Pacific side, causing heavy rain. Beware and vigilance of landslides, flooding of low lands, and rising rivers are necessary.

Even with rain, the temperature will be high and you will feel humid and humid. Be careful of heat stroke, such as frequent hydration.

Weather and Eastern Japan: Warning and caution against heavy rain disasters from the 15th.

2025/07/13 19:47

As of 3:00 p.m. today, the 13th, a tropical cyclone is moving east-southeast through the East China Sea. This tropical cyclone will progress from the East China Sea to Kyushu, and is expected to become unclear by the morning of the 14th. A new low pressure system is also expected to emerge in the western Sea of Japan and move north.

In western and eastern Japan, the air condition is expected to become extremely unstable due to the effects of warm, humid air flowing towards tropical cyclones and cyclones and cold air flowing into the sky. At night, there will be extremely heavy rain, mainly on the Pacific side, such as Shikoku, Kinki, and Tokai, with lightning, and there will be heavy rain.
There is a risk that the rain clouds will organize and locally cause heavy rain of more than 80mm per hour, and if the rain clouds develop more than expected or continue to flow in developed rain clouds, it may result in heavy rain at an alarm level.


In western Japan and eastern Japan, it is necessary to be careful and vigilant against landslides, flooding of low landslides, and rising rivers from the 15th. Also be careful of severe gusts of wind, such as lightning strikes and tornadoes.




[Rain Prediction]
+24-hour precipitation expected by the evening of the 15th (at a high place)
Tokai region: 80mm
Kinki region: 100mm
Chugoku region: 80mm
Shikoku region: 200mm
South Kyushu region: 120mm
Amami region: 100mm
+24-hour precipitation expected by the evening of the 15th (at a high place)
Tokai region: 200mm
Kinki region: 120mm

Typhoon No. 5 goes to East and Northern Japan, while tropical cyclones go to Western Japan!

2025/07/13 17:53

There is a tropical cyclone in the East China Sea, and it moves northeast, while Typhoon No. 5 is located northeast of Chichijima, and it is currently heading north.




#The tropical cyclone will progress from the East China Sea to Kyushu, and will become unclear by the morning of the 14th, but a new cyclone is expected to emerge in the western Sea of Japan and head north.
In Western Japan and the Tokai region, warm, humid air flowing towards tropical cyclones and cyclones, and cold air flowing into the sky will become extremely unstable, causing extremely heavy rain due to lightning, resulting in heavy rain.
There is also a risk that the rain clouds will organize and cause severe localized rain.
If the rain clouds develop more than expected or if the influx of developed rain clouds continues, there is a possibility that heavy rain will occur at an alarm level.

[Rain forecast]
There is a high 24-hour precipitation expected from 6pm on the 13th to 6pm on the 14th,
Tokai region: 80mm
Kinki region: 100mm
Chugoku region: 80mm
Shikoku region: 200mm
South Kyushu region: 120mm
Amami Region: 100mm

The 24-hour precipitation expected from 6pm on the 14th to 6pm on the 15th is a high 24-hour precipitation, and
Tokai region: 200mm
Kinki region: 120mm


[Disaster Prevention]
From western Japan to eastern Japan, beware and beware of landslides, low-lying flooding of landslides, and river flooding from the 15th.
Also be careful of severe gusts of wind, such as lightning strikes and tornadoes.
If there are signs of developing cumulonimbus clouds approaching, try to ensure safety by moving inside the building.




#As Typhoon No. 5 develops in the future, it will head north from the Ogasawara Islands to the east of Kanto, and on the 14th, it is expected to approach the Kanto region from the Izu Islands.
We are expected to continue moving north since then, and will approach Hokkaido from the Tohoku region on the 15th.


In the Kanto region, Tohoku and Hokkaido, the wind is very strong, heavy rain will occur, and the warm, humid air flowing towards the typhoon will unstable the atmosphere, and there are areas where heavy rain will fall with lightning.
Depending on the course of the typhoon and the degree of development, heavy rain may occur at an alarm level.
Also, it is expected to cause a major storm or a major storm at sea with swells.

[Wind forecast]
Maximum wind speed expected on the 13th (maximum instantaneous wind speed)
18 meters (25 meters)

Maximum wind speed expected on the 14th (maximum instantaneous wind speed)
25 meters (35 meters)
Izu Islands 18 meters (25 meters)
Ogasawara Islands 15 meters (25 meters)
18 meters (25 meters)
18 meters (25 meters) Meters)

Maximum wind speed expected from the 14th to the 15th (maximum instantaneous wind speed)
Tohoku Pacific side Seaside 25 meters (35 meters)
Tohoku Pacific side Land 13 meters (25 meters)


Maximum wind speed expected from the 15th (maximum instantaneous wind speed)
Hokkaido Pacific side Western sea 23 meters (35 meters)
Hokkaido Pacific side East sea 23 meters (35 meters)

[Wave forecast]
Wave height expected on the 13th
Ogasawara Islands 4 meters with swells

Wave height expected on the 14th
Kanto region 6 meters with swells
Izu Islands 5 meters with swells
Ogasawara Islands 4 meters with swells

Wave height expected from the 14th to the 15th
Tohoku Pacific side 7 meters with swells

Wave height expected on the 15th
Western Pacific side of Hokkaido 7 meters with swells
East Pacific side of Hokkaido 7 meters with swells
East Pacific side of Hokkaido 7 meters with swells

[Rain forecast]
There is a high hourly rainfall forecast on the 13th,
Ogasawara Islands: 30mm

The 1 hourly rainfall forecast on the 14th,
Tohoku Pacific side: 50mm
Northern Kanto region: 40mm
Southern Kanto region: 30mm
Koshin region: 40mm
Izu Islands: 30mm
Ogasawara Islands: 30mm

Expected from 6pm on the 13th to 6pm on the 14th, 2 The 4-hour precipitation is high,
Tohoku Pacific side: 100mm
Northern Kanto region: 100mm
Southern Kanto region: 80mm
Koshin region: 60mm
Izu Islands: 80mm
Ogasawara Islands: 120mm

The 24-hour precipitation is high, which is expected from 6pm on the 14th to 6pm on the 15th,
Eastern Hokkaido Pacific side: 120mm
Tohoku Pacific side: 80mm

[Disaster Prevention Issues]
Please be careful of high waves with storms and swells on the 14th at the seas in the Kanto region.
In the Ogasawara Islands, on the 14th, and in the Kanto-Koshin region, on the 14th, be careful and be careful of landslides caused by heavy rain, flooding of low land, and rising rivers, and be careful of lightning strikes and gusts of wind.


For the sea on the Tohoku Pacific side, beware of damage to ships and coastal facilities due to high waves accompanied by storms and swells from the evening of the 14th to the 15th.
Also, on the Tohoku Pacific side, beware and beware of landslides caused by heavy rain, flooding of low landslides, and rising rivers from the afternoon of the 14th to the 15th.


In the Hokkaido region, beware of damage to coastal facilities due to high waves and overflow waves on the 15th.
Please be careful of low land flooding due to heavy rain, landslides, flooding rivers, and strong winds.

Typhoon No. 5: Beware of future information

2025/07/13 06:44

Typhoon No. 5 broke out south of Chichijima. The typhoon is moving north at a slow speed. The central pressure is 998 hectopascals. The maximum wind speed of
near the center is 18 meters and the maximum instantaneous wind speed is 25 meters.
While typhoons are developing in the future, it is expected to approach eastern and northern Japan on the 14th.



[Rain forecast]
There is a high precipitation projected from 6am on the 13th to 6am on the 14th
#Ogasawara Islands 100mm

#Ogasawara Islands 100mm

#Tohoku region 120mm
#Kanto region 100mm
#Ogasawara Islands 100mm

[Wind forecast]
Maximum wind speed expected on the 13th (maximum instantaneous wind speed)
#Ogasawara Islands 18m (25m)

Maximum wind speed expected on the 14th (maximum instantaneous wind speed)
#Tohoku region: 25m (35m)
#Kanto region: 23m (35m)
#Izu Islands: 18m (30m)
#Ogasawara Islands: 15m (25m)


Beware and beware of landslides, flooding of low lands, flooding of rivers, high waves with strong winds and swells,
Please be careful of lightning and gusts of wind.
Please also be aware of future weather information.

"Typhoon No. 5" is due to emergence, it is more west than originally expected, is it much closer to Kanto at the end of the week What will the impact be

2025/07/12 11:54

As of 9am today, Saturday the 12th, the tropical cyclone, which is almost stagnant in the waters near Ogasawara, is expected to develop into a typhoon by tonight.


If a typhoon occurs next, it will be called "Typhoon No. 5."



As of 9am today, Saturday the 12th, the tropical cyclone is approximately 300km southwest of
Chichijima, and is almost stagnant.

The central pressure is 1002hPa, the maximum wind speed near the center is 15m/s, and the maximum instantaneous wind speed is 23m/s.


As soon as possible, a typhoon is expected to be on the southwest sea of Chichijima by tonight, and
A typhoon is expected to approach Chichijima and Hahajima as soon as it becomes a typhoon.

After that, the typhoon will move north as it progresses along the warm sea level, and by the morning of the 14th, the week is expected to approach the Izu Islands and Kanto region.


This has changed from forecasts to approach the Kanto region more than previously expected.



This is a prediction for rain tomorrow morning, Sunday the 13th.


The typhoon that changes from a tropical cyclone will likely be closest to the Ogasawara Islands (Chichijima and Hahajima) tomorrow, the morning of the 13th (Sunday).

/Beware and vigilance of increasing rain and wind.

The characteristic of this typhoon that changes from the tropical cyclone this time is that it has long, active rain clouds not only near the center of
, but also in the south, so rain is expected to last for a long time even after the typhoon passes.


Even in the Ogasawara Islands, heavy rain may occur from the morning of the 14th (Monday) to the morning of the 13th (Sunday) when typhoons approach.

In the Ogasawara Islands, the 24-hour rainfall from 6:00am on the 13th to 6:00am on the 14th is expected to be 100mm at high places.


Please be careful of landslides and be careful of strong winds and high waves.



By the time the date changes to Monday the 14th, a typhoon is expected to move north towards the southern seas of Kanto.

Also, another tropical cyclone is expected to move north in the East China Sea, and
It is expected that warm, humid air will continue to flow easily around Honshu.


To mid-next week, there will likely be many areas where heavy rain will occur, mainly on the Pacific side of the west and north Japan.


It is likely that there will be days when the wind will be strengthened due to the approaching typhoons and the weather will be rough.

Please continue to check the latest weather and typhoon information.