Typhoon No. 4: closest to the Sakishima Islands on the 7th. Beware of high waves with heavy rain and swells

2025/07/06 07:31

Typhoon No. 4 is moving at a slow speed north-northeast in the South China Sea as of 6am today, Sunday the 6th.

#Typhoon No. 4: Sunday the 6th, 6am
====
Center location: South China Sea
Moving speed: North-northeast, slow
Center pressure: 985hPa
Maximum wind speed: 25m/s (near the center)
Maximum instantaneous wind speed: 35m/s
===

Typhoon No. 4 will develop in the future pass near the Taiwan Strait towards the East China Sea, and is expected to be closest to the Yaeyama region of the Sakishima Islands on the 7th.


Wheels will gradually increase in the Sakishima Islands from the 6th, and the rocks will be accompanied by swells in coastal waters. Furthermore, due to the humid air from Typhoon No. 4, rain clouds and thunder clouds become more likely to develop, and depending on the course of Typhoon No. 4, there is a risk of heavy rain at the level of warning.
Please be careful of landslides, flooding of low landslides, and high waves at sea and coastal areas with strong winds and swells.



#Wave forecast
Wave height expected on the 6th
Miyakojima region 2.5 meters with swells
Yaeyama region 3 meters With swells

Wave height expected on the 7th
Miyakojima region 4 meters with swells


# Wind Forecast
Wind direction and maximum wind speed (maximum instantaneous wind speed) expected on the 6th:Yaeyama region: Southeast wind, 17 meters (30 meters)

Wind direction and maximum wind speed (maximum instantaneous wind speed) expected on the 7th:Miyako Island region: South wind, 15 meters (25 meters)
Yaeyama region: South wind, 17 meters (30 meters)

#Rain forecast
The hourly rainfall expected on the 6th is as follows:
Miyako Island area: 30 mm
Yaeyama area: 40 mm

The 24-hour rainfall expected from 6 AM on the 6th to 6 AM on the 7th is as follows:
Miyako Island area: 50 mm
Yaeyama area: 80 mm

Typhoon No. 4: closest to the Sakishima Islands on the 7th. Beware of high waves with heavy rain and swells

2025/07/06 07:21

Typhoon No. 4 is moving at a slow speed north-northeast in the South China Sea as of 6am today, Sunday the 6th.

#Typhoon No. 4: Sunday the 6th, 6am
====
Center location: South China Sea
Moving speed: North-northeast, slow
Center pressure: 985hPa
Maximum wind speed: 25m/s (near the center)
Maximum instantaneous wind speed: 35m/s
===

Typhoon No. 4 will develop in the future pass near the Taiwan Strait towards the East China Sea, and is expected to be closest to the Yaeyama region of the Sakishima Islands on the 7th.


Wheels will gradually increase in the Sakishima Islands from the 6th, and the rocks will be accompanied by swells in coastal waters. Furthermore, due to the humid air from Typhoon No. 4, rain clouds and thunder clouds become more likely to develop, and depending on the course of Typhoon No. 4, there is a risk of heavy rain at the level of warning.
Please be careful of landslides, flooding of low landslides, and high waves at sea and coastal areas with strong winds and swells.



#Wave forecast
Wave height expected on the 6th
Miyakojima region 2.5 meters with swells
Yaeyama region 3 meters With swells

Wave height expected on the 7th
Miyakojima region 4 meters with swells


#Wind forecast

































/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/3/ 15 meters (25 meters)
Yaeyama region Southern wind 17 meters (30 meters)


#Rain forecast

Weather today, Sunday, 6th: Beware of heat stroke in western and eastern Japan; fears heavy rain in the Sakishima Islands

2025/07/06 06:14

Today, Sunday the 6th, there will be many areas around Honshu, covered in high pressure, and there will be many sunny spots. However, in northern and eastern Japan, clouds are more likely to spread due to the influence of humid air, and there is a possibility of showers and thunderstorms everywhere, especially along the mountains. It would be a good idea to have a folding umbrella when you're out.



In western and eastern Japan, the heat will be even more severe today. Today, the 6th, a heat stroke warning alert was issued from western Japan to 19 prefectures in eastern Japan. This is the first announcement this year in Tokyo and Kanagawa prefectures, and the forecast highs in the middle of the day are expected to be a 35 C hot day in central Tokyo and Yokohama.
The heat is also severe in western Japan, with the expected maximum temperature likely to be around 35 C. This can cause dangerous heat to exceed your body temperature, so please take full precautions against heat stroke.


In Okinawa, rain clouds and thunder clouds are expected to become more likely to develop due to the humid air from Typhoon No. 4 and the cold air above. In particular, in the Sakishima Islands, there are likely areas where heavy rain with thunder from the afternoon to the evening.
Also, due to the influence of Typhoon No. 4, winds will gradually increase in the Sakishima Islands from the 6th, and coastal waters will likely be swelled by tomorrow, the 7th. Be careful of landslides, flooding of low land, strong winds and high waves.

The dangerous heat continues for the next week

2025/07/05 17:37

Today, the area around Japan was covered with high pressure, and the country was sunny and it was extremely hot.
There were many midsummer days of 30 C and many places across the country that were hotter than 35 C, and many places were extremely hot, mainly in the west and eastern Japan.

#As of 4pm, there are 681 midsummer days across the country with temperatures above 30c, and 100 hot days above 35c


The heat is continuing every day.




Tomorrow, Sunday will continue to be dangerous nationwide.
In the afternoon, there may be some areas where showers and thunderstorms will occur, mainly along the mountains, so please be careful of health such as heat stroke and sudden heavy rain that involves thunder.




Also, hot weather is expected to continue in various locations for the following week.
In addition to health management such as preventing heat stroke, please be careful about managing agricultural products, livestock, etc.

Weather today, Saturday, the 5th: Weather in western Japan is sunny and the heat continues; East to northern Japan is cloudy

2025/07/05 06:15

Today, Saturday, the 5th, the sun will reach western Japan, which is covered with high pressure, so we need to be vigilant against the extreme heat. Clouds are likely to spread due to the influence of atmospheric pressure in eastern to northern Japan, so be careful of showers.



In Hokkaido, there are probably many places where sunlight reaches it. The temperature will continue to be higher than normal and will be humid, so please be sure to stay hydrated frequently.


There will be some places in Tohoku where rain will fall, mainly in the morning. In the south, there are areas where showers will occur in the afternoon, so it's safe to have a folding umbrella.


In eastern Japan, clouds are likely to spread, and the sky is sometimes sunny.
In the afternoon, rain clouds develop locally inland and along the mountains, so those who go to leisure activities in the mountains should be careful of changes in the sky.


Western Japan and Okinawa will be sunny and severe heat will continue.
It is expected to be extremely hot days in various places exceeding 35 C. When you're out and about, be sure to drink plenty of hydration and salt, and take thorough measures against heatstroke. Also, be careful of heat stroke indoors, such as air conditioning indoors.
In Okinawa, you should be careful of sudden thunderstorms.

Typhoon No. 4 (Danus) may affect Okinawa around next week

2025/07/05 05:47

Today, July 5th, at 3am, a tropical cyclone developing in the South China Sea became Typhoon No. 4 (Danus). Typhoon No. 3 is located to the east of Japan, and two typhoons exist around Japan.



Typhoon No. 4, as of 3am today, the 5th, is in the South China Sea and is almost stagnant.

#Typhoon No. 4: 3am on the 5th (Sat)
====
Center location: South China Sea
Movement: Almost stagnant
Center pressure: 996 hPa
Maximum wind speed: 18 m/s (near the center)
Maximum instantaneous wind speed: 25 m/s
===

In the future, Typhoon No. 4 is expected to move north from the Taiwan Strait to the East China Sea, developing slightly around the 8th.
It is expected that most of the East China Sea will stagnate from the 8th onwards, and in the Okinawa region, moist air from typhoons will flow in easily, and the rain may increase. Also, waves may increase along the coast, so please be careful of future typhoon information.



#Typhoon No. 3 Saturday, 5th, 3am
====
Center location: East Japan
Movement: North Slow
Center pressure: 996 hPa
Maximum wind speed: 20 m/s (near the center)
Maximum instantaneous wind speed: 30 m/s
===

Typhoon No. 3 is expected to continue moving northward east Japan after this. As the country moves far from Japan, it is expected that it will have a small impact on Japan.

[Towards double typhoon] Will "Typhoon No. 4" occur by tomorrow morning Beware of future trends such as Okinawa.

2025/07/04 12:19

Today, July 4th (Friday) at 9 AM, it was announced that the tropical depression in the South China Sea is expected to develop into a typhoon within the next 24 hours.

If a typhoon occurs next, it will be "Typhoon No. 4."

As of 9am on Friday the 4th, the
tropical cyclone is slowly moving westward through the South China Sea, with a central pressure of 1002hPa, a maximum wind speed near the center of
is 15m/s, and a maximum instantaneous wind speed of 23m/s.



In the future, the power will be slightly stronger and a typhoon will develop by the morning of the 5th (Saturday), and
We will slowly approach the Sakishima Islands in Okinawa towards the end of the week.

In the first half of next week, typhoons that have changed from tropical cyclones in the East China Sea are expected to slow down, and
The effects of rain, wind and waves may last for a long time in the Okinawa region.


Today, the Okinawa region will need to be very careful about the trends in typhoons that change from tropical cyclones.



#Typhoon season has entered#

Currently, Typhoon No. 3 (Moon) is moving north on the sea east of Chichijima.

Typhoon No. 3 has no direct impact on Honshu, but
Typhoon No. 4, which is expected to occur next, could affect Okinawa and other places.
It is expected that a double typhoon will start in July, and the typhoon season is finally underway.

If we look at the number of typhoons that occur in normal years, it has been increasing since July, and around October, 3-6 typhoons occur every month.

This year, as the Pacific High Pressure Forces are prone to moving north in the summer,
We expect typhoons will likely move north along the edge of the Pacific High Pressure.

Even if the typhoon is far away and there is no direct effect, the warm, humid air from the typhoon flows in, causing the air to be unstable.


In particular, on the Pacific side of western Japan, there will likely be an indirect impact of the typhoon from mid-next week, so please be careful of sudden changes in the weather, such as sudden heavy rain or lightning strikes.

New typhoon eggs will appear; "Typhoon No. 4" will occur by tomorrow morning; beware of trends in Okinawa and other areas [Tropical cyclone information]

2025/07/04 11:12

Today, Friday, July 4th, at 9am, the Japan Meteorological Agency announced

/The tropical cyclone in the South China Sea is expected to develop into a typhoon within the next 24 hours.


If a typhoon occurs next, it will be "Typhoon No. 4."

As of 9am on Friday, July 4th, the
Tropical cyclone is slowly moving westward through the South China Sea, with a central pressure of 1002hPa, a maximum wind speed near the center of
is 15m/s, and a maximum instantaneous wind speed of 23m/s.



In the future, the power will be slightly stronger and a typhoon will develop by the morning of the 5th (Saturday), and
We will slowly approach the Sakishima Islands in Okinawa towards the end of the week.

In the first half of next week, typhoons that have changed from tropical cyclones in the East China Sea are expected to slow down, and
The effects of rain, wind and waves may last for a long time in the Okinawa region.


Today, the Okinawa region will need to be very careful about the trends in typhoons that change from tropical cyclones.



#Typhoon season has entered#

Currently, Typhoon No. 3 (Moon) is moving north in the waters near Ogasawara.

Typhoon No. 3 will not have a direct impact on Honshu, but
typhoon season will begin from autumn onwards.

If we look at the number of typhoons that occur in normal years, it has been increasing since July, and around October, 3-5 typhoons occur every month.

This year, as the Pacific High Pressure Forces are prone to moving north in the summer,
We expect typhoons will likely move north along the edge of the Pacific High Pressure.

Even if the typhoon is far away and there is no direct effect, the warm, humid air from the typhoon flows into the air, causing the atmosphere to be unstable.


In particular, on the Pacific side of western Japan, there will likely be an indirect impact of the typhoon from mid-next week, so please be careful of sudden changes in the weather, such as sudden heavy rain or lightning strikes.

Today (4th), the atmosphere will be unstable in various places, and be careful of tropical cyclones.

2025/07/04 06:40

There is a high pressure system near Kyushu, and it is almost stagnant.
On the other hand, the Sea of Japan is a valley of atmospheric pressure.

Today, Northern Japan is expected to have cloudy and rainy weather in the morning, due to the effects of moist air and cold air above, and there will be some areas where it will fall violently with thunder.

Also, in eastern and western Japan, there are many sunny spots in the morning, but in the afternoon, the atmosphere becomes unstable due to the effects of humid air and solar radiation, and there are likely some places that cause rain or thunderstorms.



[Rain forecast]
The 24-hour precipitation expected from 6am on the 4th to 6am on the 5th is a high place, and
#Hokkaido
+Northern part of the Sea of Japan side: 80mm
+South part of the Sea of Japan side: 100mm
+Western part of the Pacific side: 100mm
+East part of the Pacific side: 80mm
+Northern part of the Sea of Okhotsk side: 60mm
+South of the Sea of Okhotsk side: 60mm

#Tohoku region
+Tohoku Sea of Japan side: 100mm

/B#Kanto region
/B+Northern Kanto region: 100mm
/B#Kanto region
/B+North Kanto region: 100mm
/B+South Kanto region: 60mm
/B+Koshin region: 100mm
/B/BThere is a risk of heavy rain locally in other regions as well.
Beware of landslides, flooding of low land, flooding of rivers, lightning strikes and gusts of wind, hail, and
Beware of sudden, heavy rain.



In addition, tropical cyclones are occurring around the Philippines.
It will be stagnant for a while from now on, but it is expected that it will develop around the 10th
/Move into the East China Sea.
Please be careful of future weather information.

Typhoon No. 3 Ogasawara Atmospheric unstable; the weather around Honshu is on the rise, and the dangerous heat of overheating

2025/07/03 13:16

Weekly Weather Forecast
#Widely Air Condition Very Unstable Weather Changes - Warning-class heavy rain
#High Pressure Power Increases, Tropical Nights due to dangerous heat exceeding body temperature
#Typhoon No. 3 has occurred



#Widely Air Condition Very Unstable Weather Changes - Warning-class heavy rain
On Wednesday, yesterday, Hyogo Prefecture, Kyoto Prefecture, Tochigi Prefecture, Fukushima Prefecture, Miyagi Prefecture, and Yamagata Prefectures, and record-breaking heavy rain information was announced.
Tomorrow, the 5th (Saturday), we need to be vigilant against sudden, extremely severe thunderstorms, especially in the afternoon.
The high pressure system will stagnate near western Japan.
From Okinawa to Tohoku, the temperature will rise with clear weather and warm, humid air surrounding the high pressure, and the atmosphere is expected to become extremely unstable, especially in the afternoon.
Even in the sun, the weather will change dramatically, with localized, extremely heavy rain with lightning.
If the rain clouds stagnate, there is a risk of heavy rain at the level of an alarm.
Also, a low pressure system will advance to the Sea of Okhotsk, and cold air will pass over northern Japan tomorrow, Saturday the 5th.
There are some areas in Hokkaido that are raining, and the atmosphere is expected to become unstable due to the warm, humid air facing the low pressure system and the cold air above.
Please be careful as the rain may suddenly become more intense.





#Pacific high pressure increases in power Tropical nights due to the dangerous heat of exceeding body temperature
After that, the Pacific high pressure will gradually increase in power.
From Sunday the 6th to Monday the 7th, the Pacific High Pressure is expected to protrude near western Japan, and from Tuesday the 8th to Thursday the 10th, it is expected to protrude into the Sea of Japan.
At this time, there may be some places where the end of the rainy season will be announced.
There will be some places where the summer sun will shine, and there will be some hot days and tropical nights every day.
There is a high temperature reaching 36 C, mainly in western Japan and Tokai, and there are some areas where the temperature is likely to be dangerous, exceeding the body temperature.



#Typhoon No. 3 has emerged
Today, Thursday the 3rd, at 3am, a tropical cyclone developing in the waters near Ogasawara became Typhoon No. 3 (Moon).
In the Ogasawara Islands, the atmosphere condition is expected to become unstable due to the effects of warm, humid air around the typhoon until tomorrow, the 4th (Friday).
Beware of sudden heavy rain, lightning strikes, and gusts of wind.