[Marine Summary] Severe drowning near the Nansei Islands due to Typhoon No. 9 (July 5th to 11th, 2026)

2026/07/17 13:27

Typhoon No. 9 was the most powerful and ferocious typhoon in the Mariana Islands.
After that, a large and strong force passed near the Sakishima Islands.
The sea near the Nansei Islands was severely flooded, with wave heights reaching a maximum of 13 meters when the typhoon passed.
Below is a summary of the ocean (July 5th to 11th, 2026)



#Pressure distribution and waves
On the 6th, a large and ferocious typhoon No. 9 moved westward near the Mariana Islands, and on the 7th and 8th it moved westward east of the Philippines with extremely strong force.
On the 9th, Typhoon No. 9, a large and very strong typhoon, changed its course to the northwest east of the Philippines, and reached the south of Okinawa on the 10th.
On the 11th, Typhoon No. 9 was large and powerful, passing near the Sakishima Islands and moving northwest.
As Typhoon No. 9 approached Japan, waves were rough in the south of Japan and near the Ogasawara Islands on the 7th and 8th, and waves were slightly higher in the east of Japan.
From the 8th to the 9th, there was a storm in the sea near the Nansei Islands, and in the south of Okinawa and the south of Japan, there was a severe storm around the typhoon.
From the 10th to the 11th, the sea near the Nansei Islands was hit by a typhoon, resulting in severe flooding, with wave heights reaching a maximum of 13 meters.



#Sea surface temperature
Sea surface temperatures in the Japanese waters continued to be higher than normal.
The temperature gradually rose significantly above normal, mainly in the central part of the country, reaching a maximum of 3 C above normal.
The East China Sea, the waters near the Nansei Islands, and the south of Japan remained at normal levels, while the waters off the southeastern coast of Kanto continued to be slightly lower than normal.
Off the coast of Sanriku, conditions continued to be at normal levels.
Off the southeastern coast of Hokkaido, sea areas continued to be significantly higher than normal, with temperatures up to 4 C higher than normal.
In the waters near the Kuril Islands, the area slightly below normal has shrunk.
The Sea of Okhotsk was slightly higher than normal.

Today's weather (Friday 17th): The atmosphere is unstable nationwide. Be careful of sudden heavy rain and thunderstorms. The Tokai Kinki region is experiencing intense heat.

2026/07/17 07:58

Atmospheric conditions will be unstable over a wide area today, the 17th (Friday). Please be aware of sudden and severe thunderstorms in places, especially in the afternoon.
It will be hot and humid in many places, so please continue to take precautions against heat stroke.



Today, the weather is likely to be cloudy in many places, and rain clouds are likely to form in some parts of the Kanto region during the morning commuting hours. In the afternoon, rain clouds will appear here and there, mainly in Kyushu, Kanto-Koshin, and Tohoku, and there will be places where it will rain heavily, accompanied by thunder. In eastern Japan, rain will continue into the night.



The probability of lightning strikes is high in Kyushu and eastern Japan from late afternoon to evening, and in Kanto and Koshin areas even into the night. In some places in eastern Japan, it's more than 50%. If the sky suddenly becomes dark or you hear the sound of thunder nearby, please move to a safe place.


There are some places where the sun shines, and the temperature rises during the day, making it extremely hot. Temperatures are expected to rise to 34c in Asahikawa, Hokkaido, where it is sunny, and 32c in Sapporo.
It will be extremely hot in the Tokai and Kinki regions, with Kyoto at 37 degrees Celsius, and places like Osaka and Gifu at 36 degrees Celsius, which is likely to be as hot as body temperature. The humidity will be high and the heat will be uncomfortable, so please take care of your health.

From around July 22nd, dangerous heat of "once in 10 years" will be felt all over the country, so be on guard against heat stroke!

2026/07/17 06:48

Yesterday, the 16th, the Japan Meteorological Agency announced "early weather information regarding high temperatures" for Hokkaido, Kyushu, Amami, and Okinawa.



"Early weather information regarding high temperatures" is announced when the region is expected to experience high temperatures that are at a once-in-a-decade level for this time of year.
The Japanese archipelago will be more likely to be covered in warm air from now on, so it is expected that there will be many days with ``fairly high temperatures'' over the next two weeks.
Extremely high temperatures are expected from Hokkaido to Kyushu and Amami from around the 22nd (Wednesday), and in Okinawa from around the 25th (Saturday). In addition to taking care of your health, please also be careful about managing your crops.



Next week, temperatures inland are expected to be just one step away from being extremely hot, with maximum temperatures reaching 40c. It looks like the rainy season will end next week in the Kanto-Koshin and Tokai regions.
The risk of heat stroke also increases. In particular, when a heatstroke warning alert is announced, please take proactive measures to prevent heatstroke, such as drinking plenty of water and salt, and avoiding prolonged outdoor activities and using an air conditioner indoors.

[Breaking news] New tropical cyclone develops and becomes typhoon No. 12

2026/07/16 17:45

According to information released by the Japan Meteorological Agency at 16:15 on the 16th, a new tropical cyclone has formed near the Truk Islands.
If this tropical cyclone develops, it is expected to become Typhoon No. 12.



The central pressure is 1006 hPa and it is moving east-northeast at 15 km/h. The maximum wind speed near the
center is 15 m/s, and the maximum instantaneous wind speed is 23 m/s.

At 3pm on the 17th, it is expected to proceed northeast at 15km/h near the Truk Islands, and at 3pm on the 18th, it will change course to the north and proceed at 10km/h.

Please check the latest information regarding your future career path.

Weather for tomorrow 17th (Friday): There is a risk of thunderstorms in Kanto and Tohoku

2026/07/16 17:35

Moist air is expected to flow around the edge of the high pressure system over the east coast of Japan. A front is expected to extend from the continent to the vicinity of the Korean Peninsula.



Clouds tend to spread in the Kanto, Hokuriku, and southern Tohoku regions due to the influence of humid air, and the weather is likely to be unrefreshing. There is a chance of rain and thunderstorms in places.
There is a risk of thunderstorms in Kyushu and western China due to the front, so please bring an umbrella when going out.
In eastern China, Shikoku, Kinki, Tokai, northern Tohoku, and Hokkaido, there are places where the sun can reach, and the intense heat continues. Please take all possible precautions against heatstroke, such as frequently drinking water and salt, taking adequate breaks, and using a parasol or hat when engaging in outdoor activities.

[Sudden weather change] Possibility of heavy rain in the Kanto region by the time you get home. There is a risk of warning-level heavy rain in northern Japan during the three-day weekend (Commentary: Weather forecaster Atsuko Miyake)

2026/07/16 14:26

From today (Thursday) afternoon until tomorrow, the 17th (Friday), the atmospheric conditions will be unstable due to the extremely warm and humid air brought in by the
typhoon.
Please be careful of sudden changes in weather even if it is sunny.



This is the state of the rain clouds at noon today (Thursday).
At this time, rain clouds are beginning to develop in parts of the mountains from the Kanto-Koshin region to the Tohoku region.
Not many rain clouds have flown into the plains yet, but after this, due to the humid air and rising temperatures, rain clouds are likely to form here and there.



Rain clouds are forecast from the evening.
In the Kanto-Koshin and Tohoku regions, rain clouds flow not only along the mountains but also into the plains.
There is also a red sign, indicating that there will be heavy rain locally.
There are likely to be thunderstorms in some places.



At 6pm, rain clouds are expected to gradually disappear in the Tohoku region, but
in the Kanto region, active rain clouds are expected to gradually move southward.

Especially around 7pm to 8pm, when it's time to go home, red signs are noticeable in places like Saitama Prefecture,
There are likely to be places where it will rain heavily.
It seems like it will hit central Tokyo as well.

Please be careful of flooding of roads and low-lying areas.

It seems that there are some areas that will remain active until the date changes.



This heavy rain refers to rain that falls between 30 and 50 mm per hour.
When it rains heavily, you may get wet even if you have an umbrella, and
the rain can turn the road into a river.

Also, the sound of rain becomes so loud that about half of the people who are sleeping notice it.
If you drive too fast, the brakes may become ineffective, so be careful.



The unstable atmosphere will continue tomorrow (Friday) as well.
Looking at the probability of lightning strikes tomorrow afternoon, the probability of lightning strikes is high not only in the Kanto region, but also in the Kyushu, Chugoku, and Shikoku regions.

Please be careful of lightning, gusts of wind, and hail tomorrow.



Rain clouds are already expected to spread over the Kanto region tomorrow (Friday) morning.
There is a risk of heavy rain even in central Tokyo.

Also, in the afternoon, rain clouds begin to form along the mountains in Kyushu, the Chugoku region, and the Shikoku region.
It is likely that rain and thunderstorms will continue to occur here and there in the Kanto region.

In the Kanto region, heavy rain from evening to night may turn into thunderstorms.
The rain is expected to continue in similar parts of the Kanto region until late at night.

Please be careful of localized heavy rain. The
river may rise or flood, rainwater may flow into low-lying areas, and the
underpass may overflow.
Please stay away from flooded rivers and underpasses.



Starting from the weekend, there will be a three-day holiday, but during the holidays, low pressure systems and fronts will pass through northern Japan.
For this reason, it rains more frequently in northern Japan.
There is a risk of heavy rain in Hokkaido, especially on the 19th (Sunday), so please be careful about how the rain falls.



Let's take a look at the weather in various places.

We need to be careful about the severe heat and sudden changes in the weather tomorrow (Friday) as well.

Osaka and Nagoya are expected to have a very hot day with temperatures reaching 35 degrees Celsius.

Today (Thursday) is already the third consecutive day of extremely hot weather in Nagoya, so if the temperature exceeds 35c tomorrow, it will be the fourth consecutive day of extreme heat. Please be careful of heat stroke.

Also, even in areas marked as sunny, be careful of sudden changes in the weather in the afternoon.



Weekly forecast.
During the three-day weekend starting on the 18th (Saturday), it will be rainy especially in northern Japan and Hokuriku.

The weather in western and eastern Japan is also likely to be cloudy and less clear than in the first half of the holidays.

Although the rainy season has not yet ended in eastern Japan and the Tohoku region,
it is expected to be sunny next week.
I think there will be an announcement of the end of the rainy season in eastern Japan next week.

Tomorrow, the 17th (Friday) Lightning warning area expanded; be careful of heavy rain, gusts of wind, and hail

2026/07/16 12:59

A low pressure system accompanied by a front is passing near Sakhalin. Low pressure On the other hand, there is a high pressure system south of Okinawa, which is stationary near the Nansei Islands.
The Tohoku region is currently covered in rain clouds, and the weather is expected to gradually improve after this.
The heat continues today, with temperatures nationwide being higher than normal,
predicted to be even hotter than midsummer.
Sapporo is expected to be at 31c, Tokyo is expected to be at 35c, and Nagoya is expected to be at 37c, so it looks like the temperature will be unbearable. Please take care of your health.



In addition to the rise in temperature near the ground, the influence of warm, humid tropical air brought in by the low pressure system that was Typhoon No. 9 will make the atmosphere unstable in the afternoon of today (Thursday) the 16th,
and there is a risk of heavy rain accompanied by thunder mainly along the mountains of the Kanto region.



Tomorrow, the 17th (Friday), there will be some sunshine in western Japan, but the atmospheric conditions are unstable mainly in the Kanto, Hokuriku, and Kyushu regions, and there is a risk that rain clouds may form locally in the morning.





It is expected that areas with a higher probability of lightning than today will expand, such as along the mountains of the Kanto and Hokuriku regions and the Kyushu, Chugoku, and Shikoku regions.Please pay close attention to the latest information and be wary of the sudden development of rain clouds.
In the target areas, please be careful of flooding of low-lying land, rising river water, flooding, and landslides.

The end of the rainy season is announced earlier than normal in northern Kyushu, Shikoku, and Kinki. Large typhoon No. 9 approaches the Sakishima Islands on the 11th (weather summary from July 5th to July 11th, 2026)

2026/07/16 07:42

This is a summary of the weather for this period (July 5th to July 11th, 2026).

#Summary of the weather for this period (July 5th to July 11th)
During this period, warm air tends to enter, and after the rainy season front became unclear, some places in western Japan recorded extremely hot days. Particularly in western and northern Japan on the Sea of Japan side, there were some places where the air currents over the mountains caused high temperatures, and the average temperature was above normal, mainly on the Sea of Japan side. Temperatures on the Pacific side of eastern Japan were below normal in some places due to the influence of cool air north of the seasonal rain front.

Although heavy rain was recorded in some places in Kyushu and Shikoku in the first half of the period, the seasonal rain front gradually became unclear and high pressure became dominant, so the total amount of precipitation was below normal in many places. In the second half of the period, Hokkaido recorded much higher-than-normal precipitation due to the effects of a trough in atmospheric pressure and lower-level warm and humid air, and the Sakishima Islands due to the effects of Typhoon No. 9.

Sunshine hours tended to exceed normal levels, mainly from Tohoku to Kyushu on the Sea of Japan side, as the seasonal rain front became unclear near Honshu and there were many sunny days covered by high pressure. In Hokkaido, the number of cloudy and rainy days increased in the latter half of the period due to the effects of a trough in atmospheric pressure and warm, humid air in the lower levels, and there were some places where temperatures were below normal.



[About this period's weather]
#Characteristics of pressure distribution
On the 5th, the seasonal rain front stalled from northern Kyushu to near Shikoku, and the front extended as far east as Japan. The seasonal rain front remained stationary in western Japan until the 6th, but on the 7th the front near western Japan gradually became unclear, and the area around Honshu was widely covered by high pressure near Okinawa and high pressure east of the Chishima Islands. From the 8th onwards, the seasonal rain front was almost invisible around Honshu, and was covered by a high-pressure system extending far to the east of Japan.However, from the 9th to the 11th, the area around Hokkaido was susceptible to the effects of a trough in pressure and lower-level warm, humid air. Meanwhile, Typhoon No. 9, a large and powerful typhoon, moved westward near the Mariana Islands on the 5th, and passed through the Mariana Islands at its peak on the 6th. After that, it became a large and very strong force as it moved westward over the sea east of the Philippines, and around the 10th, it gradually changed its course to the northwest and headed north over the sea south of Okinawa. On the 11th, Typhoon No. 9 became large and powerful and passed near the Sakishima Islands. On this day, a daily maximum instantaneous wind speed of 45.3 m/s was observed in Kitahara, Kumejima Town, Okinawa Prefecture.

#Precipitation
On the 5th, heavy rain occurred mainly in western Japan due to the influence of the seasonal rain front. Extremely heavy rain of 76.0 mm/h occurred in Soeda Town, Fukuoka Prefecture, linear rain bands formed in Kumamoto Prefecture, and extremely heavy rain was observed in Uwajima City, Ehime Prefecture on Shikoku. On the 6th, the rainy season front brought rain over a wide area of western and eastern Japan, with particularly heavy rain observed in western Japan, especially in Kyushu. On the 7th, the rainy season front moved south of Honshu, with somewhat heavy rain near the Izu Islands. In western Japan, the seasonal rain front became unclear, but there was localized rain and thunderstorms along the mountains and inland. On the 8th, the area around Honshu was in a high-pressure zone, with almost no precipitation. The end of the rainy season was announced in northern Kyushu, Chugoku, and Kinki (all 11 days earlier than normal). On the 9th, there was a trough in the atmospheric pressure near Hokkaido, and the inflow of lower-level warm and humid air made the atmosphere unstable, resulting in heavy rain. On the 10th, heavy rain of 43.5 mm/h was observed in Nakatonbetsu, Hokkaido, and on the 11th, extremely heavy rain of 54.0 mm/h was observed in Fukagawa City, Hokkaido. On the 10th and 11th in the Nansei Islands, heavy rain was observed in Kunigami Village and Miyakojima City, Okinawa Prefecture due to Typhoon No.9.

#Temperature
On the 5th, there were some places in northern Japan that were covered in high pressure and the sunlight reached midsummer, and the temperature was recorded at 32.4c in Takasu, Kitaakita City, Akita Prefecture. On the 6th, western Japan experienced cloudy and rainy weather due to the seasonal rain front, but temperatures were high; in Miyazaki Prefecture, a temperature of 34.2 degrees Celsius was recorded in Akae, Miyazaki City, where southerly winds caused a ferohn phenomenon. On the 7th, midsummer air flowed over Kyushu and the temperature rose, with Dazaifu City, Fukuoka Prefecture experiencing an extremely hot day of 35.7c. On the other hand, in Tokyo, there was little sunshine due to easterly winds, and the maximum temperature remained at 24.7 degrees Celsius. On the 8th, the temperature rose due to sunshine and warm air brought in by Typhoon No.9. Extremely hot days were recorded in 10 locations, including Maebaru, Itoshima City, Fukuoka Prefecture, and Hita City, Oita Prefecture. On the 9th, the area around Honshu became an area of high pressure, with clear skies and rising temperatures. An extremely hot day of 35.3c was recorded in Kyoto. On the 10th and 11th, the area around Honshu continued to be in a high-pressure zone, and areas with clear sunshine recorded extremely hot days. On the 10th, Yatsushiro City, Kumamoto Prefecture experienced a heatwave of 37.2c, and on the 11th, Dazaifu City, Fukuoka Prefecture recorded a temperature of 39.2c, the highest in recorded history. The number of observation points on the extremely hot day on the 11th reached 43.

Weather forecast for today, the 16th (Thursday): Severe heat in a wide area, take full precautions against heatstroke! Be careful of sudden weather changes in the afternoon, especially in the Kanto-Koshin region.

2026/07/16 07:20

Today, the 16th (Thursday), a low pressure system accompanied by a front will move near Sakhalin. From Hokkaido to the Sea of Japan side of northeastern Japan and Hokuriku, there will be rain from the morning, with some localized areas experiencing heavy rain. Daytime rain will gradually stop in many places around this time.
However, the sun will reach after the rain, so it is expected to be extremely hot. In Hokkaido, Kitami and Obihiro cities are expected to experience extreme heat of 35 degrees Celsius. In Sapporo, the temperature will rise to 32 degrees Celsius, which will be much hotter than normal.



From Tohoku to Kyushu, many places are expected to experience severe heat following the previous day. Heat stroke warning alerts have been issued by the Ministry of the Environment and the Japan Meteorological Agency for the region from Tohoku to Kyushu, and the number of such areas is 27, the highest number this season.
In eastern Japan, temperatures are expected to reach 37 degrees Celsius in Kofu and Nagoya, and temperatures are expected to reach 35 degrees Celsius during the day in central Tokyo, potentially marking the first extremely hot day of the year.
Even in western Japan, temperatures are expected to rise to around 35 degrees Celsius in many places, and inland areas may experience dangerous heat that can exceed body temperature.

Please be extremely careful to avoid heat stroke, drink plenty of water and salt, and take adequate breaks.



In the afternoon, atmospheric conditions will be unstable, especially in inland and mountainous areas of the Kanto-Koshin region. The weather may change suddenly after noon, especially in areas where there is a high probability of lightning, so please be careful of sudden rain or thunderstorms. Developed rain clouds that form inland or along the mountains may flow into the plains, so be careful of flooding of roads and low-lying land due to sudden heavy rain.There is also the possibility of lightning strikes, tornadoes, and other strong gusts of wind, so if you see signs that developed rain clouds or thunderclouds are approaching, please take precautions such as taking shelter inside a sturdy building.

The atmosphere will be extremely unstable in the Kanto-Koshin region tomorrow, the 16th (Thursday). Be careful of sudden thunderstorms and gusts of wind in the afternoon.

2026/07/15 18:35

There is a risk of guerrilla thunderstorms in the Kanto-Koshin region tomorrow, the 16th (Thursday). It is possible that this will coincide with the time you are returning home, so be careful of sudden changes in the weather. There are many extremely hot days with maximum temperatures over 35 degrees Celsius, and the intense heat continues. Please be careful of heat stroke.



The strong sun will shine tomorrow, the 16th (Thursday), but the atmospheric conditions are likely to become unstable in the afternoon as temperatures rise. There will be scattered showers and thunderstorms, with localized rain clouds.

The expected 1-hour precipitation on the 16th is high in the areas,
Northern Kanto region 40 mm
Southern Kanto region 30 mm
Koshin region 30 mm

The expected 24-hour precipitation from 18:00 on the 15th to 18:00 on the 16th is
Northern Kanto region 60 mm
Southern Kanto region 60 mm
Koshin region 60mm

Then, the predicted 24-hour precipitation from 18:00 on the 16th to 18:00 on the 17th is expected to be heavy in some places: 60mm
in the northern Kanto region and 60mm

in the southern Kanto region.

There is a risk of thunderstorms occurring during the time you return home, so please be careful of flooding on the roads.

There are three main phenomena that can be a precursor to guerrilla heavy rain (localized heavy rain).



#Pitch black clouds approach
Developed cumulonimbus clouds that bring about torrential rain appear pitch black. A sudden darkening of the sky is also a sign of torrential rain.
#I hear the sound of thunder
If you hear a rumbling sound, a thundercloud is approaching.
#Cold wind suddenly blows
From a cumulonimbus cloud that has developed, cold wind blows down along with raindrops.

If you feel any of these signs, immediately evacuate to a safe place.