Triple typhoon on Thursday, 18th - Three typhoons occur on the same day are unusual

2025/09/19 01:00

Typhoon No. 17 occurred at 3pm on Thursday, the 18th. Also, at 9pm, Typhoon No. 18 and Typhoon No. 19 occurred one after another.
According to the Japan Meteorological Agency, it is unusual for three typhoons to occur on the same day.



#Typhoon No. 17 As of 9:00 pm on Thursday, September 18th/region: South China Sea
Move: West-Northwest: 20km/h
Center pressure: 1002hPa
Maximum wind speed: 18m/s (near the center)
Maximum instantaneous wind speed: 25m/s

Typhoon No. 17 We expect to move west in the South China Sea in the future, so there will be no impact on Japan.
It is expected to reach South China at 3pm on Saturday the 20th and become a tropical cyclone again.



#Typhoon No. 18 As of 9:00 pm on Thursday, September 18th/region: East
moving in the Philippines Northwest Slow
Central pressure: 1002hPa
Maximum wind speed: 18m/s (near the center)
Maximum instantaneous wind speed: 25m/s

Typhoon No. 18 In the future, it will develop in the east of the Philippines
































































































































































Although there is a low risk of direct hits on Okinawa, depending on your career path, there is a risk of a major swell in the Sakishima Islands from the 22nd to the 23rd. please note.



#Typhoon No. 19 As of 9:00 pm on Thursday, September 18th/region: Waters near Wake Island/Breakdown: Woosh Island/Breakdown: Woosh 15km/h
Center pressure: 1004hPa
Maximum wind speed: 18m/s (near the center)
Maximum instantaneous wind speed: 25m/s

Typhoon No. 19 As it develops, it will proceed west-northwest along the waters near Minami Torishima, and is expected to become a strong typhoon at 9:00 pm on the 21st. After that, it is expected to proceed to the waters near Ogasawara at 9:00 pm on the 22nd.
Depending on your future career path, there is a risk that the Ogasawara Islands may have an impact.

Please be careful of future typhoon information.

[Towards triple typhoon] Typhoon No. 17 has appeared!! It has strong winds, and there are also two typhoon eggs on the southern seas.

2025/09/18 16:52

Today, the 18th (Thursday) at 3pm, a tropical cyclone developing in the South China Sea became Typhoon No. 17.



#Typhoon No. 17 Live commentary on Thursday, September 18th at 3pm
Area of existence: South China Sea
Movement: WNW 20 km/h
Central pressure: 1002 hPa
Maximum wind speed: 18 m/s (near the center)
Maximum instantaneous wind speed: 25 m/s
Strong wind area 330 km on the east side 220 km

Typhoon No. 17 travels west-northwest along the South China Sea with strong winds.
From now on, we will continue northwest in the South China Sea, and at 3pm on Saturday, 20th, we will reach South China, transforming into a tropical cyclone.
There is no impact on Japan, but if you are considering traveling to South China such as Hong Kong, please check the latest information.

In addition to Typhoon No. 17, there are two tropical cyclones developing southwards.
The Japan Meteorological Agency has announced that these two tropical cyclones are expected to "develop as typhoons" in the future.
If the typhoon develops as expected, it will be called Typhoon No. 18 and Typhoon No. 19 in the order in which the typhoons occur, and it is likely that a triple typhoon will occur.
Please be careful of up-to-date information.

Triple typhoons to occur Typhoons No. 17, Typhoons No. 18, Typhoons No. 19 What will be the impact on Japan Pay attention to future trends

2025/09/18 13:12

As of 9am today, the 18th (Thursday), there are three tropical cyclones developing in the south sea.
The Japan Meteorological Agency has announced that these three tropical cyclones are expected to "develop as typhoons" in the future.
When a typhoon occurs, it is called Typhoon No. 17, Typhoon No. 18, and Typhoon No. 19 in the order in which it occurs.



#Tropical cyclone a - typhoons in the South China Sea - In the future, impacts South China, such as Hong Kong
#Tropical cyclone b - In the future, strong typhoons in the future, impacts Okinawa, accompanied by storm zone
#Tropical cyclone c - In the future, to the sea near Ogasawara, taking notice of trends

#Tropical cyclone a - 9am commentary on Thursday, September 18th
Areas of existence: South China Sea
Travel: Northwest 20 km/h
Central pressure: 1006 hPa
Maximum wind speed: 15 m/s (Near center)
Maximum instantaneous wind speed: 23 m/s

#Tropical cyclone b Live commentary on Thursday, September 18th at 9am
Assembly area East of the Philippines
Move West NW 15 km/h
Center pressure 1004 hPa
Maximum wind speed 15 m/s (Near center)
Maximum instantaneous wind speed 23 m/s

#Tropical cyclone c Live commentary on Thursday, September 18th at 9am
Assembly area Way near Wake Island
Move West 15 km/h
Center pressure 1008 hPa
Maximum wind speed 15 m/s (Near center)
Maximum instantaneous wind speed 23 m/s


#Tropical cyclone a In the future, typhoons in the South China Sea It is expected to move west through the South China Sea after the typhoon develops within 12 hours, and will not affect Japan.
It is expected to reach South China at 9am on Saturday the 20th and become a tropical cyclone again, but if you are considering traveling to South China such as Hong Kong, please check the latest information.

#Tropical cyclone b: Strong typhoons will affect Okinawa with a storm zone
Tropical cyclone b to the east of the Philippines is expected to develop into a typhoon within 24 hours and then move west and northwest with a storm zone.
By the time the 22nd (Monday), it will develop into a strong force and reach the south of Okinawa's Sakishima Islands.
Although there is a low chance that it will hit Okinawa directly, there is a risk of impact, such as winds strengthening, waves rising, and localized rain clouds developing. Please be aware of future information.

#Tropical Cyclone C: Going to the sea near Ogasawara in the future with a storm zone Trends warning
Tropical Cyclone C on the sea near Wake Island is expected to continue moving west after developing into a typhoon within 24 hours.
By around Tuesday, the 23rd, we will proceed to the waters near Ogasawara with a storm.
There is a risk that it will affect the Ogasawara Islands.
Also, the trends that follow are still uncertain.
Please be careful of future information.

Southern autumn rain front: Sea of ??Japan side is wary of heavy rain disasters; in the Kanto region, the air condition is extremely unstable in the afternoon

2025/09/18 07:14

Today, the 18th (Thursday), the autumn rain front stagnates near the Sea of Japan, and a low pressure system on the front is moving eastward through the Sea of Japan. Due to the cold air above and the warm, humid air flowing towards the front, the atmosphere is becoming extremely unstable, mainly on the Sea of Japan side from Tohoku to northern Kyushu.



It has been widely raining from the Tohoku Sea of Japan side to Kyushu, and as of 7:00am in southern Tohoku, Hokuriku, and Sanin, some heavy rain warnings and flood warnings have been issued. In addition, in Yamagata and Niigata prefectures, landslide warning information has been issued, and there are some areas where the risk of landslides is increasing.

Today, the morning will continue to be covered in active rain clouds along the Sea of Japan side, accompanied by the front. Heavy rain may continue in similar places.

The front will gradually move south, and rain clouds are expected to flow into the Pacific Ocean side in the afternoon.



Today, in the Kanto region, the temperature will be sunny and rising, mainly in the morning, and there will likely be some hot days when the expected maximum temperature during the day is above 35 C.
However, in the afternoon, as we descend south of the front, the cold air flows into the sky, and the warm, humid air heading towards the front and the rising temperature during the day will make the atmosphere extremely unstable. Rain clouds and thunder clouds will develop rapidly from the evening, and there is a risk of heavy rain and extremely heavy rain with thunder, not only inland and along mountains, but also in plains.
Even on the Kinki-Pacific side and Shikoku, the weather can change suddenly from midday to the evening.

/Beware and beware of landslides, flooding of low land, rising rivers and flooding. You should also be careful of severe gusts of wind, such as lightning strikes and tornadoes.

Thunderclouds are developing inland areas of western and eastern Japan; tornado warnings have been announced in Gunma and Tochigi prefectures and other areas

2025/09/17 19:59

As of 7:30pm today, the 17th (Wednesday), the atmosphere is unstable inland and along mountains in western and eastern Japan, with some areas where rain clouds and thunder clouds are developing locally.

As of 7:30pm, we can see that particularly developed rain clouds have been appearing from radar in the northern Kanto, northern Kinki, and the area around Tokushima Prefecture in the Shikoku region. As of 7:30pm, the Japan Meteorological Agency issued tornado warnings in Tochigi, Gunma, Kyoto, Hyogo and Tokushima prefectures, making it prone to severe gusts of winds such as tornadoes.



Weight conditions will continue to be prone to severe gusts of wind such as tornadoes, so please be careful about the situation in the sky. At the same time, you should be careful of lightning strikes and hail falling.


If a tornado comes near you, if it's indoors, try to ensure safety by closing the windows and curtains, leaving the window, moving to a room without a window, or by entering a sturdy desk to protect your head.


If you are outdoors, it is important to hide behind the objects of a sturdy building and protect your head and neck.
It is dangerous to store sheds, garages, and prefabricated ones.
If there is no evacuation site, lie in the shade or ditch.

Record-wide "high temperatures" are even in the ocean; sea surface temperatures around Japan are "severely high" [Summary of the oceans, September 7th-13th, 2025]

2025/09/17 13:23

The average summer temperature in Japan this year (2025) was significantly higher than last year and the year before last, marking the highest for the third consecutive year.
It has also been an unusual summer, with records of extremely hot days and spots above 40 C.

Not only is the temperature at sea, but the sea surface temperature is quite high, and this year, the typhoon approaches the average year (three) but
The sea surface temperature has not dropped much.


Below is a summary of the oceans (September 7th to 13th, 2025).



#Pressure arrangement and waves
On the 7th, a cyclone with a front went eastward through Hokkaido, and a front extending from the
Cyclone made south through Honshu on the 8th.
On the evening of the 7th, the waves were 2m high off Noto.
On the morning of the 8th, the waves were around 3m off Sanriku, but the waves subsided overnight.

/From the 9th to the 11th, the front line stagnated near Honshu.
In the waters around Japan, the waves were around 1m high, and the waves remained relatively mild.

From the 12th to 13th, the pressure slope increased between the cyclone on the front that stagnates in the Sea of Japan and the high pressure that is increasing its strength near the Sea of Okhotsk. On the night of the 13th, the waves rose to around 3m from Sanin to Akita.





#Sea surface temperature
The sea surface temperature in the Japanese Sea is much higher than normal, and
On the central and western continental sides, it has been up to 5 C higher than normal.


In the East China Sea, higher than normal waters have spread.
The Nansei Islands also have a higher sea area than usual.

On the Pacific side, the average sea area has been reduced, and the average sea area has expanded to above normal.


The waters off Sanriku continued to be much higher than normal.
In the south of the coast of Kuril Island, lower than normal waters continue.

The Sea of Okhotsk has reduced the average sea area, and the
Coastal areas continue to be much higher than normal.

[Double typhoons to occur] Will "Typhoons No. 17 and No. 18" occur one after the next by tomorrow morning (information on tropical cyclones)

2025/09/17 11:56

As of 9am today, Wednesday, September 17th, two tropical cyclones (typhoon eggs) have emerged on the sea south of Japan.



The Tropical Cyclone A landed on Luzon, the Philippines while still in a tropical cyclone, and
The Tropical Cyclone B travels westward east of the Philippines.



It is expected that both tropical cyclones A and B will develop by tomorrow, the 18th (Thursday), and a double typhoon is expected.


If a typhoon occurs, it will be "Typhoon No. 17" or "Typhoon No. 18."



Information on tropical cyclone a
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ kt)
Maximum instantaneous wind speed 23 m/s (45 kt)
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The typhoon that changes from tropical cyclone A has not developed much, and is expected to return to tropical cyclone in South China by the morning of Saturday the 20th.



Information on tropical cyclone b
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ kt)
Maximum instantaneous wind speed: 23 m/s (45 kt)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------


They will head north to the south of Okinawa towards the end of the week, with a storm zone expected to occur.

The forecast circle is still large, and the path and speed of the typhoon is not clear, but there is a "storm warning zone" in which a storm zone may enter the Sakishima Islands in Okinawa, so you need to be very careful about the trends in the typhoons ahead.



The future course of the typhoon and the speed of moving north will affect the balance and activity with the autumn rain front near Honshu.


Weather around Honshu may change dramatically over the next week, so
Please be sure to keep up to date with the latest information.

Tohoku Region 17th: Highly wary of landslides and lowland flooding

2025/09/17 07:40

A low pressure system accompanied by a front is moving east-northeast around the Primco State. The low pressure system that occurs on the front extending from this low pressure system will move northeasterly through the Sea of Okhotsk on the 17th, with a cold front passing through the Hokkaido region.



Another front extends from China to the Tohoku region through the Korean Peninsula and the Sea of Japan. This front line is expected to travel south from the Tohoku region on the 17th through the Sea of Japan, and south from eastern Japan on the 18th.
In Northern Japan to Western Japan, the air condition will be extremely unstable due to the effects of low pressure and warm, humid air flowing towards the front, as well as cold air above and rising daytime temperatures.

#Rain forecast

The 24-hour precipitation expected from 6:00 on the 17th to 6:00 on the 18th is high,
Tohoku region: 100 mm

/B: The 24-hour precipitation expected from 6:00 on the 18th to 6:00 on the 19th is high,
/B: The 24-hour precipitation expected from 6:00 on the 18th to 6:00 on the 19th is high,
: Tohoku region: 60 mm
/B: The 100 mm
/B: In the Tohoku region: 17th, be careful of landslides, low-cost flooding, river flooding and flooding. Also, be careful of severe gusts of winds such as lightning strikes and tornadoes in northern and western Japan from the 18th.

Typhoon No. 17 to occur; typhoon eggs east of the Philippines; after typhoon development, almost stagnates in the South China Sea [Tropical cyclone information]

2025/09/16 16:59

As of 3:00 p.m. today, the 16th (Tuesday), the Japan Meteorological Agency has announced that it is expected to develop into a typhoon within 24 hours regarding the tropical cyclone developing in the east of the Philippines.
As expected, if it develops into a typhoon, it will be called "Typhoon No. 17."



#Tropical Cyclone Tuesday, September 16th at 3pm
Existence Area East
Location of the Philippines east
Central location 15 20 minutes N latitude 123 40 minutes east
Move north-northwest Slow
Central pressure 1006 hPa
Maximum wind speed 15 m/s (near the center)
Maximum instantaneous wind speed 23 m/s
In the future, the tropical cyclone east of the Philippines will proceed northward, and will develop into a typhoon in the east of the Philippines at 3pm tomorrow, the 17th (Wednesday), and typhoons will develop in the east of the Philippines.
They will proceed westward on the 18th on the 18th, and reach the South China Sea by Friday the 19th, and are expected to develop even further.
Then, on Sunday the 21st, the movement will be slower and almost stagnant in the South China Sea.


We do not expect a direct impact on Japan.
For now, we do not expect to land in mainland China, but as the South China Sea will slow down for a few days, the impact may last for a long time in South China and elsewhere.
If you are planning to travel to this area, please be careful of the latest information.

Autumn rain front again to Japan tomorrow and tomorrow, the Tohoku Sea of Japan side, and the fear of heavy rain on the southern Kanto region, including Tokyo,

2025/09/16 12:05

#Autumn rain front returns to Japan again tomorrow, heavy rain will rain on the Sea of Japan side of the Tohoku region
Today, the 16th (Tuesday), the area around Japan is covered with high pressure, and the sun is reaching a wide range of air conditioning.
However, the autumn rain front is stagnating in mainland China, and will likely reach the central Japan Sea tonight, and tomorrow, the 17th (Wednesday) to the northeast.
The next day, the 18th (Thursday), is expected to head south from west to eastern Japan.



In Tohoku, the atmosphere will be extremely unstable due to the effects of warm, humid air heading towards the front line from the morning of the 17th (Wednesday) to the 18th (Thursday).
In particular, on the Tohoku Sea of Japan side, there are areas where heavy rain falls, like a 40mm bucket flipped over an hour due to lightning.
The 24-hour precipitation until the morning of the 18th (Thursday) is expected to be 100mm at a high location, and if the rain clouds develop more than expected or stagnate in the same location, there is a risk of heavy rain at the warning level.
Also, heavy rain of 30mm per hour will fall on the Tohoku Pacific side.
We expect the 24-hour precipitation to be 50mm until the morning of the 18th (Thursday).



On the Tohoku Sea of Japan side, beware and beware of landslides caused by heavy rain, flooding of low landslides, and rising rivers from tomorrow morning, Wednesday the 17th to the 18th (Thursday).
In addition, in Tohoku, be careful of damage to agricultural crops and agricultural facilities caused by severe gusts of winds such as tornadoes and lightning strikes, hail, from dawn to late at night, tomorrow, the 17th (Wednesday) to the end of the night.

#Autumn rain front: It will go down south of the west to south of the east Japan; heavy rainfall in Kanto; warning level in Kanto
Tomorrow, the 18th (Thursday), the autumn rain front is expected to go south of the west to south of the east Japan.
Also, the front line will become more active as the pressure valleys above pass through.
There are some areas where rain will be temporarily falling along the Sea of Japan side of the Western Japan, eastern Japan, and Tohoku.
Thunderclouds will also develop locally in the southern Kanto region, such as in Tokyo, and there is a risk of heavy rain at the level of warning.
Please be careful of the latest information.