Typhoon No. 12 is likely to emerge. What is the risk of landing From Okinawa to the west of Kyushu, beware of severe thunderstorms, strong winds and high waves [Tropical cyclone information]

2025/08/18 11:46

Today, the 18th (Monday) at 9am, the Japan Meteorological Agency announced that the tropical cyclone that is developing in the south-southeast of Miyako Island is expected to develop into a typhoon within 12 hours.
If the typhoon develops as expected, it will be called Typhoon No. 12 as the third typhoon that will begin in August.



#Tropical Cyclone As of 9am today, Monday the 18th
====
Central location approx. 310km south-southeast of Miyako Island 22 10 minutes north latitude 126 25 minutes east longitude North northeast Slow
Central pressure 1008 hPa
Maximum wind speed 15 m/s (near the center)
Maximum instantaneous wind speed 23 m/s
===

This tropical cyclone is expected to develop into a typhoon within the next 12 hours, and will head north to approximately 240km south of Naha City at 9pm today, Monday the 18th.
After that, we will continue our slow northwards, and pass by the area around Okinawa main island tomorrow, the 19th (Tuesday).


Already, warm and humid air around tropical cyclones has flowed in the area around Okinawa and Amami, and rain clouds have developed locally.
Even if it's sunny, be careful of sudden heavy rain, lightning strikes, and gusts of wind.
And by the time the date changes tonight, active rain clouds from the typhoon itself will begin to appear.
It is expected that there will be areas where heavy rain will fall next tomorrow, the 19th, mainly in the main island of Okinawa.
Depending on the degree of rain cloud development, there is a risk of heavy rain at the level of warning.
Please be careful of landslides, flooding in lowlands, and flooding of rivers.
The wind will also increase from tomorrow, the 19th (Tuesday).
In coastal waters, it is expected to gradually fade with swells tomorrow, the 19th (Tuesday). Be careful of strong winds and high waves.



The typhoon has not developed much after passing around Okinawa, and is expected to continue moving north slowly, reaching the East China Sea on the 20th (Wednesday) and the west of Kyushu on the 21st (Thursday).
From Saturday the 23rd, it will mostly stagnate west of Kyushu.
We believe that the chances of landing in Kyushu are low, but in Kyushu, warm, humid air flows around the typhoon, and rain clouds may develop.
Beware of sudden heavy rain and thunderstorms.
Also, it is expected to change to a tropical cyclone at 9am on the 23rd (Saturday).

The heat stroke warning alert is announced to 23 prefectures, with severe heatstroke continuing from Kanto to west

2025/08/18 06:25

Today, the 18th, the high pressure system will be covered in eastern and western Japan. There are many sunny spots from the Kanto region to western Japan, and the strong sunlight shines through.
The forecast maximum temperatures are 27c in Sapporo, 34c in Sendai, 35c in Tokyo, 39c in Nagoya, 36c in Osaka, 34c in Fukuoka.
We are expected to continue to see severe heat, especially inland areas. Especially in Kanto and Tokai, the heat can be dangerously close to 40 C depending on the location, so please be sure to take full precautions against heatstroke.

/BOn the other hand, in northern Japan, where the front has passed, the atmosphere is relatively dry, so it looks a bit more comfortable to spend time.



The Ministry of the Environment and the Japan Meteorological Agency have issued heatstroke warning alerts for 23 prefectures from the Kanto to western Japan.


In areas where a heatstroke warning alert has been issued, significantly higher temperatures can cause damage to human health due to heatstroke.
Please refrain from activities during hot weather and try to take frequent breaks, drink water, and drink salt.
Also, use air conditioners indoors to ensure that you stay in a cool environment and take full advantage of heatstroke indoors.

Weather for today, the 18th (Monday): Rain is likely to fall in the south of Tohoku; Beware of changes in the sky from East to Western Japan

2025/08/18 05:54

Today, the 18th (Monday), after the Obon holidays, is expected to be covered by high pressure in the area around Honshu. The sun is reaching in Eastern to Western Japan, but in southern Tohoku and Okinawa, you can rest assured that you have a folding umbrella.



The weather will improve in Hokkaido and northern Tohoku, and there will be many sunny spots. Please be careful of changes in the sky as there is a possibility of showers on the Pacific side.
On the other hand, in southern Tohoku and Niigata prefectures, clouds are likely to spread, and there will be times when rain will fall as they are affected by the front and the sheer line. It's safe to have rain gear when you go out.


There will be a wide range of sunlight from Kanto to western Japan. As the temperatures rise, it seems like it will be a day where heatstroke prevention measures will be essential in various places.
In the afternoon, there is a risk of local thunderstorms, mainly inland areas and mountains. Be careful of sudden changes in the weather.


As a tropical cyclone approaches Okinawa, the weather moves downhill. Even if it is sunny during the day, the weather will be disrupted after the evening, so if you are late to get home, please bring rain gear.

The dangerous heat continues for a week after the end of the Bon Festival.

2025/08/17 17:59

The Sea of Okhotsk has a low pressure system that moves eastward, with a front extending west of Hokkaido and into the Sea of Japan.
On the other hand, there is a high pressure system on the Tokai region of Japan, spreading around Honshu.


In Hokkaido and northern Tohoku, rain clouds have spread due to the influence of the front, and heavy rain, flood warnings, and landslide warning information have been issued.
There is a risk of heavy rain coming along tomorrow morning with lightning, so be careful of landslides caused by heavy rain, flooding of low land, flooding of rivers and flooding.


It was sunny and severe heat in the southern Tohoku region and Kyushu region. As of 5pm, there were 691 midsummer days at a temperature of 30 C and 127 hot spots nationwide, and 35 C and 35 C and 127 hot spots at a temperature of 100 C and 35 C and 390.







There will be many days when the weather is covered in high pressure and sunny or warm air for the next week after tomorrow, and there will be many days when the weather will be covered in high pressure and sunny or warm air, so
Extreme heat is expected to continue throughout the wide area from Tohoku to Kyushu.
In addition to health management such as preventing heat stroke, please be careful about managing agricultural products, livestock, etc.







As a heat stroke prevention measure, it is important to stay hydrated frequently and avoid the heat.
It is important to avoid direct sunlight, especially when going out, by wearing a parasol or hat, and using the shade.
Also, don't worry about being indoors, and try to keep up with proper hydration and temperature control.



Specific measures to prevent heat stroke are as follows.

1. Avoid the heat:
When going out: Wear a parasol or hat and use the shade. Avoid going out during hot times.
Indoor: Make sure to control the temperature appropriately (use air conditioners and fans appropriately). Make sure to ventilate frequently.
When active: Don't overdo it on hot days and take frequent breaks.

2. Hydration:
Relax: Refreshing hydration frequently during the hot season to prevent dehydration.
Drinks suitable for hydration: Barley tea, oral rehydration solutions, sports drinks, etc. are suitable.

3. Salt supplement:
Salt supplement when sweating: It is also important to replenish the salt that is lost along with sweat.
Foods suitable for replenishing salt: Add a little salt to umeboshi, salted kelp, rice balls and other foods.

4. Clothing:
Breathable Clothing: Wear clothes made of breathable materials (cotton, linen, etc.).
Moisture-absorbing and quick-drying underwear: Choose underwear that is excellent in moisture-absorbing and quick-drying.

5. Health management:
Notes when you are not feeling well:
Special care is required when you are not feeling well, as the risk of heatstroke increases.
Note for the elderly:
Special care is required in elderly people as their temperature control function decreases.

Beware of extreme heat in East and Western Japan; beware of heavy rain in Northern Japan

2025/08/17 06:02

Today (17th), you should be careful of extreme heat in eastern and western Japan.
The Ministry of the Environment and the Japan Meteorological Agency have issued heat stroke warning alerts to 18 prefectures, including Tokyo, Aichi, and Hiroshima, with the forecast of 38 degree celsius in Maebashi and Kumagaya and 37 degree celsius in Gifu and Yamaguchi. Make sure to take full precautions against heat stroke.
Also, the heat is expected to continue this week, mainly in eastern and western Japan, and it is likely to be severe in Tokai and Kinki
.
The Obon holiday has ended, and I think there will be many people starting this week for work.
Please try to stay in a cool environment using an air conditioner indoors, or other facilities, and make sure to drink plenty of water and salt, and take full precautions against heatstroke.



/BOn the other hand, due to the passage of the front and approaching, there are likely
areas where rain will fall locally, with heavy thunder, mainly on the Sea of Japan side. Be careful of low land flooding due to heavy rain, landslides, and flooding of rivers.

Tomorrow, Sunday the 17th, the cold front will pass from Hokkaido through Tohoku. There may be heavy rain at the warning level

2025/08/16 17:27

The Primco State has a cyclone with a front, moving east.
The low pressure system will continue to move east in the future, and tomorrow, Sunday the 17th, the cold front extending from the low pressure system will pass around Hokkaido and approach the Tohoku region through the night.




Warm, humid air flows towards the front, making the atmosphere extremely unstable.
For this reason, in Hokkaido and the Tohoku region, extremely heavy rain may fall with thunder, causing heavy rain.
If the rain clouds develop more than expected, or if the developed rain clouds continue to hit the same location, there is a possibility that heavy rain will occur at the warning level.


In the Hokkaido region, from the dawn of the 17th to the evening, be careful of heavy rainfall and severe gusts of winds such as landslides, flooding of rivers, tornadoes, and hail.
On the Sea of Japan side of the Tohoku region, be careful and be careful of landslides, flooding of low landslides, and rising rivers from the afternoon of the 17th until late at night.
In addition, in the Tohoku region, be careful of severe gusts of winds, lightning strikes, and hail from before noon to late at night on the 17th.




[Rain forecast]
The forecast for the 17th is high,
Hokkaido: Northern Sea of Japan Side: 30mm
Hokkaido: Southern Sea of Japan Side: 30mm
Hokkaido: Western Pacific Side: 30mm
Hokkaido: Northern Sea of Okhotsk: 30mm
Tohoku: Sea of Japan Side: 50mm


/B: The forecast for the 24-hour precipitation is high from 6pm on the 16th to 6pm on the 17th,
/B: Northern Sea of Japan Side: 100mm
/B: Hokkaido: Southern Sea of Japan Side: 80mm
Hokkaido: Western Pacific Side: 70mm
Hokkaido: Northern Sea of Okhotsk: 100mm
Tohoku: Sea of Japan Side: 80mm































































































































































































































/
Please be careful of low land flooding due to heavy rain, landslides, and flooding of rivers.
Depending on the degree of rain cloud development, there is a risk of heavy rain at the level of warning.
In addition, there is a risk of severe gusts of wind, lightning, and hail, such as tornadoes, mainly in the northern part of the Sea of Japan side.
Please be careful about outdoor activities and agricultural crop management.
If there are signs of developing cumulonimbus clouds approaching, try to ensure safety by moving inside a sturdy building.
On the Tohoku Sea of Japan side, beware and beware of landslides caused by heavy rain, flooding of low landslides, and rising rivers from the afternoon of the 17th until late at night.
In addition, in the Tohoku region, be careful of damage to agricultural crops and agricultural facilities, etc. from before noon to late at night on the 17th, severe gusts of winds such as tornadoes, lightning strikes, and hail.
If there are signs of developing cumulonimbus clouds approaching, try to ensure safety by moving inside a sturdy building.

Dangerous heat, mainly in western Japan. Be careful of sudden changes in the weather in the afternoon inland and mountains in the west to eastern Japan.

2025/08/16 07:25

The area around Honshu is covered by tall high pressure systems, and today, the 16th, many areas will be sunny, mainly in western and northern Japan.
In western Japan, strong sunlight will shine brightly, and many days are expected to be extremely hot at 35 C or higher. The temperature rises to 38 C in Yamaguchi City, Kurume City (Fukuoka Prefecture), and Hita City (Oita Prefecture), making it a dangerous heat. Take full precautions against heat stroke.



In the afternoon, the atmosphere conditions are expected to be unstable, mainly in western and eastern Japan. Looking at today's lightning probability forecast, the probability is high, especially inland and mountains in western Japan and eastern Japan, so you'll likely need to be careful of sudden changes in the weather. Locally, there is a risk of heavy rain or thunderstorms with more than 30 mm of lightning per hour, and extremely heavy rain over 50 mm of lightning per hour. In particular, if you are going to leisure activities on mountains or rivers, be careful of changes in the sky and sudden changes in the weather.
Also, rain clouds may flow into the plains, so it's a good idea to carry a folding umbrella when you go out, even if it's sunny.

Latest month forecast: The intense heat that continues through September: Western and Eastern Japan are again trending in rainy weather

2025/08/15 20:06

On Thursday, the Japan Meteorological Agency announced the latest one-month forecast, which will provide an estimate of the weather for the next month.



According to the prediction results from the numerical forecast model, the Pacific high pressure system is predicted to rise from the southeastern sea in Japan to the east and western Japan. North and Eastern Japan are subject to a period of mobility high pressure, while North, East and West Japan are likely to be covered by high pressure throughout the period.
On the other hand, since the Sea of Okhotsk side is a low-pressure area, it is expected to be affected periodically by low pressure and front lines, mainly on the Sea of Japan side of North Japan.
The average temperature around 1500m above the sky is high nationwide, and the area around Honshu is likely to be covered in warm air throughout the period.



In western and eastern Japan, high pressure will continue to be more likely to be covered in high pressure, so there will be more sunny days and the precipitation will be lower than normal. The weather in northern Japan is likely to change cyclically due to the effects of low pressure and fronts, but there will be many sunny days throughout the period, and precipitation will likely be on the same level as normal or less than normal.
From August 7th to 12th, due to the stagnant front and low pressure system, linear precipitation occurred in Kyushu and Hokuriku, causing record-breaking heavy rain. It looks like there will be a tendency for rain again in the future. Use water carefully on a daily basis.


The average temperature one month away will be higher than normal nationwide from Hokkaido to Okinawa. The Japan Meteorological Agency has released an "Early Weather Information on High Temperatures" stating that the average five-day temperature from around the 20th is likely to be significantly higher than normal. This information is intended to encourage caution at least six days in advance when the temperature is likely to rise that is only once every 10 years.



There is a possibility that there will be a record-breaking hot day in the future, and nighttime temperatures will continue to be less likely to drop. Be sure to take full precautions against heat stroke, day and night. You also need to be careful about managing your crops.

Tomorrow, severe thunderstorms and extremely severe thunderstorms in Tokai and Kanto - Warning: Weather changes suddenly in the future - The dangerous heat that exceeds the temperature will return

2025/08/15 13:11

Obon - the Pacific High Pressure Power will increase after the Obon holidays
Weekly Weekly Weekly Weekly Weekly Weather Forecast
#Warning for sudden weather Not only in the mountains, but also in the plains
#Dangerous heat that exceeds body temperature is expected to return to 38 C in Gifu, Nagoya, and Kofu
#Cannot be aware of sudden weather conditions as well as in the plains



#Warning for sudden weather Not only in the mountains, but also in the plains

The other day, due to the influence of the front, there was heavy rain around Honshu.
However, due to the growing influence of the Pacific High Pressure over the next week, the front line will be unclear near Honshu.
We expect sunny days to continue, mainly in western and eastern Japan.

However, tomorrow, the 16th (Saturday), clouds will likely spread on the Pacific Ocean side of the west and eastern Japan due to the influence of moist air.
In the Tokai and Kanto, due to the influence of valleys of atmospheric pressure, there are also areas where rain will fall in the plains.
There will be heavy rain and extremely heavy rain inland and along mountains.

From the next day, onwards, in western and eastern Japan, you should be careful of sudden changes in the weather even if it's sunny.
The air condition is likely to become unstable due to rising temperatures during the day or the effects of humid air.
In the afternoon, rain clouds tend to develop mainly inland areas and along mountains, so when leisure activities in the mountains, be careful of changes in the sky and keep safety first.
Also, rain clouds can flow into the plains, so it's safe to carry an umbrella that can be used in both sunny and sunny areas.



#Dangerous heat that exceeds body temperature is expected to return to 38 degrees Celsius in Gifu, Nagoya and Kofu
In the last few days, the heat has settled down for a while due to rain from the front.
However, the dangerous heat that exceeds the temperature has returned for the next week.
Again, there are more places where the highest temperature is over 35 C, and there will be some places where the temperature is dangerously high, not only in western Japan but also in eastern Japan, where the temperature is dangerously high, especially inland areas.
We expect the highest temperature to be in Gifu tomorrow, the 16th (Saturday), 37c in Kumagaya tomorrow, and 38c in Monday, the 18th (Mon) in Gifu, Nagoya, and Kofu.
In areas where a heatstroke warning alert has been issued, try to spend your time in a cooler environment with air conditioning indoors, taking frequent breaks, hydrate and salt.
This is a summer vacation, and it is a time when three generations of people go out more, but elderly people, infants, and young children are prone to heat stroke, so be careful and people around you should also talk to them.
Even in areas where heatstroke warning alerts have not been announced, when leisure activities outdoors, be sure to take thorough measures against heatstroke, such as drinking plenty of hydration, using hats and parasols, and taking breaks in cool places.





#Low pressure and fronts pass through the area around Northern Japan
Low pressure and fronts are expected to pass through one after another, and rain will likely fall in a short period, mainly on the Sea of Japan side.
Caution is required as there is a risk of heavy rain or thunderstorms locally.
On the days when the sun is exposed, the temperature will likely exceed 30 C in Hokkaido.

Heat stroke warning alerts are announced in Tokai and Western Japan

2025/08/15 06:34

The area around Japan is expected to continue to be covered by high pressure. The strong sunlight is shining, especially in western Japan, and the heat will continue today.

The forecast maximum temperatures are 30 C in Sapporo, 32 C in Sendai, 33 C in Tokyo, 36 C in Nagoya, 36 C in Osaka, 34 C in Kochi, and 35 C in Fukuoka.
In addition, in Hita, Kurume, and Saga, the temperature may exceed 38 C, which is expected to be 38 C. If you are working outdoors, such as those who are working in recovery from heavy rain, please take full precautions against heat stroke.



The Ministry of the Environment and the Japan Meteorological Agency have issued heatstroke warning alerts from Tokai to Western Japan, and have been announced for 22 regions.


In areas where a heatstroke warning alert has been issued, significantly higher temperatures can cause damage to human health due to heatstroke.
There are probably many people planning to go out during the Obon holidays, but in areas where the announcement is made, please refrain from activities during hot times as much as possible, and be careful to take frequent breaks, drink water and salt.
Also, use air conditioners indoors to ensure that you stay in a cool environment and take full advantage of heatstroke indoors.