Large and very strong Typhoon No. 30: Caution advised for violent winds and linear precipitation zones

2026/10/23 07:47

As of 4:00 a.m. on the 23rd, Typhoon No. 30?a large and very strong storm?is moving northwest, south of Okinawa, at a speed of approximately 15 km/h. The central pressure is 950 hPa, with maximum sustained winds of 45 m/s near the center and peak gusts reaching 60 m/s.
The typhoon is expected to remain powerful as it passes closest to the Sakishima Islands by the 24th, before moving into the East China Sea.



In the Okinawa region, from today through the 24th, some areas may experience violent winds strong enough to cause the collapse of certain buildings.
Please take strict precautions against these severe winds: move into a sturdy building, and while indoors, stay away from windows.



Additionally, please remain on high alert for high waves accompanied by swells through the 24th.
In the Okinawa region, as tide levels will be high today (the 23rd), please exercise extreme caution regarding potential flooding in low-lying areas along the coast and near river mouths?caused by storm surges or the combination of storm surges and high waves.

A forecast for the potential formation of a linear precipitation zone (a band of heavy rain) has been issued for the Miyakojima and Yaeyama regions. From the afternoon of today, the 23rd, through the early morning of the 24th, a linear precipitation zone may develop, leading to a sharp increase in the risk of disasters caused by heavy rainfall.

Please remain on high alert for landslides, flooding in low-lying areas, and rising or overflowing rivers. Be cautious of severe gusts, including those associated with lightning strikes or tornadoes.

Typhoon No. 30 is expected to shift its course from northward to eastward, approaching Kyushu on the 25th. It is projected to transition into an extratropical cyclone near western or eastern Japan by around the 26th; however, please note that there is a high degree of uncertainty in the typhoon's forecast. Furthermore, as the typhoon moves northward, a weather front located to the south of Japan is expected to shift northward and become increasingly active.

Please continue to monitor the latest information.

Weather for tomorrow, Thursday the 23rd: Conditions to deteriorate from the west; Okinawa region urged to stay on alert for a typhoon.

2026/10/22 18:29

As of 11:00 a.m. today, Thursday the 22nd, a migratory high-pressure system is covering much of western Japan, bringing clear autumn weather to a wide area around Honshu. Meanwhile, in northern Japan, a "west-high, east-low" pressure pattern has developed; cold air?with temperatures of -6C or lower at an altitude of approximately 1,500 meters-is flowing over the waters west of Hokkaido. Over the Sea of ??Japan, "banded clouds"-a characteristic feature of winter-have formed.



Additionally, a large and violent Typhoon No. 30 is moving west-northwest south of Okinawa, and a high-wave warning has been issued for the Okinawa region. Please stay alert and keep track of the latest information regarding this typhoon.



Detailed Weather Forecast by Region (for tomorrow, the 23rd)
Okinawa Region: Typhoon No. 30 Approaching ? High Alert for Violent Winds and Heavy Rain in the Sakishima Islands
Typhoon No. 30 is expected to approach the Sakishima Islands with "very strong" intensity between tomorrow, Friday the 23rd, and the following day, Saturday the 24th. The Sakishima Islands will experience violent winds during this period?strong enough to potentially cause the collapse of some homes. Please move into a sturdy building and stay away from windows; remain on high alert against these severe winds. Furthermore, heavy, warning-level rainfall is expected from tomorrow, Friday the 23rd, through Saturday the 24th. Remain on high alert for landslides, flooding in low-lying areas, and rising or overflowing rivers. Caution is also advised regarding high waves-accompanied by swells?in areas including the Okinawa main island region and the Daito Islands. Depending on the typhoon's path, there is a risk of warning-level storm surges from tomorrow, Thursday the 23rd, through around Saturday the 25th. Please exercise extreme caution regarding flooding or inundation in low-lying areas near coastlines and river mouths.

Western and Eastern Japan: Sunny spells in the morning, but rain and clouds expected across a wide area by evening
While many places will see sunny skies this morning under the influence of a high-pressure system, areas around Kagoshima Prefecture may experience heavy, thundery rain due to a weather front and the influx of moist air. Clouds will spread from the west in the afternoon, with rain expected in many parts of Western Japan by the evening. Eastern Japan is also expected to become overcast by nightfall.

Northern Japan: Generally sunny, but be mindful of the temperature difference between day and night
Much of Northern Japan will see sunshine during the day. However, due to the influence of cold air?with temperatures in the Kitami region of Hokkaido, for example, dropping as low as -3C?it will become quite cold during the morning and evening hours. Please take care of your health, as there will be a significant temperature variation throughout the day.





Get your laundry done by tomorrow, Thursday the 23rd! From the day after tomorrow, Friday the 24th, through around Tuesday the 27th, low-pressure systems and fronts will move across the Japanese archipelago, leading to unsettled, dreary weather nationwide. Tomorrow, Thursday the 23rd, will be the last chance to take advantage of any sunshine. It is recommended that you finish tasks like washing heavy items or airing out bedding by tomorrow.

First Signs of Winter in Hokkaido: First Snowfall in Wakkanai and Asahikawa

2026/10/22 12:18

Today, Thursday the 22nd, a cold air mass?with temperatures around -6 at an altitude of approximately 1,500 meters?has moved over northern Hokkaido. As a result, the first snowfall of the season has been recorded in both Wakkanai and Asahikawa. This marks the first snowfall of the season nationwide, arriving two days later than last year and three days later than the long-term average.





In Hokkaido, conditions conducive to rain or snow are expected to persist until this evening, particularly along the Sea of ??Japan coast. While precipitation in lowland areas is likely to fall mostly as rain, higher-altitude regions and some inland areas may see snow, which could lead to snow accumulation on mountain passes.
The rain and snow are expected to gradually taper off as the night progresses.



Drivers crossing mountain passes should ensure their vehicles are equipped for winter conditions and exercise extra caution.
If you are planning a long-distance trip by car, it is advisable to be prepared with items such as studless (winter) tires, winter-ready windshield wipers, and de-icing spray.

[Typhoon Information] Large and violent Typhoon No. 30 is set to approach the Sakishima Islands between tomorrow and the 24th; frontal activity is also intensifying near the main Japanese islands (Honshu).

2026/10/22 07:59

As of 6:00 a.m. today, Wednesday the 22nd, the large and violent Typhoon No. 30 (Champa) is located south of Okinawa. It is moving northwest at a speed of approximately 20 km/h and is accompanied by a zone of violent winds. The central pressure is 905 hPa, with maximum sustained winds of 55 m/s near the center and peak gusts reaching 80 m/s. A zone of violent winds-with sustained speeds of 25 m/s or greater-extends 280 km to the northeast and 220 km to the southwest of the center.

Typhoon No. 30 is expected to continue moving northwest. While it may weaken slightly, it is projected to remain "very strong" or "strong" as it approaches the Sakishima Islands between tomorrow, Friday the 23rd, and the following day, Saturday the 24th.
Thereafter, the typhoon is expected to shift its course toward the north or northeast, potentially affecting western Japan, including the Kyushu region. Furthermore, even before the typhoon's arrival, rain is expected to persist across the main island of Honshu due to a weather front. Please stay updated with the latest weather information.

In the Okinawa region, where Typhoon No. 30 is approaching, residents should remain on high alert for violent winds, high waves (accompanied by swells), and landslides. Please also be cautious of flooding in low-lying areas, as well as rising water levels or overflowing in rivers. In the Amami region, please exercise caution regarding high waves accompanied by swells.

# Typhoon No. 30 - Wednesday, the 22nd, 6:00 AM
------------------------------------
Size: Large
Intensity: Violent
Center Location: South of Okinawa
Movement: Northwest at 20 km/h
Central Pressure: 905 hPa
Maximum Sustained Wind Speed: 55 m/s (near the center)
Maximum Instantaneous Wind Speed: 80 m/s
------------------------------------

As the typhoon approaches, the Okinawa region is expected to experience "violent winds"-strong enough to potentially cause the collapse of some homes-from tomorrow, Friday the 23rd, through Saturday the 24th. Please take strict precautions against these severe winds: move into a sturdy building, and while indoors, stay away from windows.
Additionally, the Okinawa region should remain on high alert for high waves accompanied by swells through Saturday the 24th, and the Amami region should also exercise caution regarding high waves accompanied by swells through Saturday the 24th. [Wind Forecast]
Expected maximum wind speeds (peak instantaneous wind speeds) for the 22nd:
Okinawa Region: 23 m/s (35 m/s)

Expected maximum wind speeds (peak instantaneous wind speeds) for the 23rd:
Okinawa Region: 40 m/s (55 m/s)

Expected maximum wind speeds (peak instantaneous wind speeds) for the 24th:
Okinawa Region: 40 m/s (55 m/s)

[Wave Forecast]
Expected wave heights for the 22nd:
Amami Region: 6 m (with swells)
Okinawa Region: 9 m (with swells)

Expected wave heights for the 23rd:
Amami Region: 6 m (with swells)
Okinawa Region: 11 m (with swells)

Expected wave heights for the 24th:
Amami Region: 6 m (with swells)
Okinawa Region: 11 m (with swells)





In the Okinawa region, from tomorrow, the 23rd (Friday), through the day after tomorrow, the 24th (Saturday), please exercise extreme caution regarding landslides, flooding in low-lying areas, and rising or overflowing rivers.
Also, be alert for lightning strikes and severe gusts, such as those caused by tornadoes. If there are signs that a developed cumulonimbus cloud is approaching, please take steps to ensure your safety, such as by moving indoors.

[Rainfall Forecast]
Expected 24-hour rainfall totals (in areas with the heaviest precipitation):
Okinawa Region: 150 mm (from 6:00 on the 22nd to 6:00 on the 23rd)

Okinawa Region: 300 mm (from 6:00 on the 23rd to 6:00 on the 24th)

Okinawa Region: 150 mm (from 6:00 on the 24th to 6:00 on the 25th)



Additionally, depending on the path of the typhoon, there is a risk of warning-level storm surges in the Okinawa region from tomorrow, the 23rd (Friday), through around the 25th (Sunday).

Please stay updated on any disaster-related weather information issued hereafter.

[Breaking News] "Level 5 Special Flood Warning" issued for the Koyoshi River in Akita Prefecture

2026/10/21 20:33

At 7:45 PM today, Wednesday the 21st, a "Level 5 Flood Emergency Warning" was issued for the Koyoshi River in Akita Prefecture.

At the Meih? reference observation station (Yurihonjo City) on the Koyoshi River, water levels have reached the "flood occurrence" threshold. It is possible that flooding is already underway along the Koyoshi River, and there is a risk of inundation in Yurihonjo City. Please immediately check for evacuation information issued by your local municipality and take appropriate disaster-prevention measures to ensure your personal safety.



An "Emergency Warning" corresponds to "Alert Level 5," indicating that a disaster is either occurring or imminent. There is an extremely high probability that a disaster is already in progress.
Your life is in immediate danger; please take steps to ensure your safety right away.




Currently, a low-pressure system is rapidly intensifying as it moves northeast near Hokkaido. A cold front extending from this system is passing through the Tohoku region.
Warm, moist air is flowing toward the low-pressure system and the front, resulting in active rain clouds over the Tohoku region, including Akita Prefecture.
Please remain on high alert for rising river levels and potential flooding caused by heavy rain through the early morning hours of tomorrow, Thursday the 22nd.

Typhoon No. 30, packing very strong force, approaches the Sakishima Islands; caution advised regarding violent winds and high waves.

2026/10/21 19:09

As of 6:00 PM today, Wednesday the 21st, the large and violent Typhoon No. 30 is moving west-northwest, east of the Philippines. It has a central pressure of 900 hPa, and a distinct eye is visible near its center.



Typhoon No. 30 is expected to move northwest, passing south of Okinawa. By the day after tomorrow, Friday the 23rd, it is projected to gradually shift its course toward the north and approach the Sakishima Islands while maintaining "very strong" or "strong" intensity.



In the Okinawa region, very strong winds are expected tomorrow, Thursday the 22nd. By the day after tomorrow, Friday the 23rd, there is a risk of violent winds?intense enough to cause the collapse of some homes. Please take strict precautions against these severe winds: move into a sturdy building before the winds intensify, and stay away from windows while indoors. Wind Forecast
Expected maximum wind speeds (peak instantaneous wind speeds) for the 21st:
Okinawa Region: 18 m/s (30 m/s)
Expected maximum wind speeds (peak instantaneous wind speeds) for the 22nd:
Okinawa Region: 23 m/s (35 m/s)
Expected maximum wind speeds (peak instantaneous wind speeds) for the 23rd:
Okinawa Region: 40 m/s (60 m/s)

While sea conditions in the Okinawa region are already rough, they are expected to become extremely rough starting tomorrow, Thursday the 22nd. Through around the 24th, please exercise extreme caution regarding high waves accompanied by swells. Furthermore, depending on the typhoon's path, there is a risk of warning-level storm surges in the Okinawa region from Friday the 23rd through around the 25th. In the Amami region, please also remain on alert for high waves accompanied by swells from tomorrow, Thursday the 22nd, through around the 24th.



From Friday the 23rd through around Saturday the 24th, please exercise extreme caution regarding landslides, flooding in low-lying areas, and rising water levels or overflowing of rivers. Additionally, from tomorrow, Thursday the 22nd, through around Saturday the 24th, please be wary of lightning strikes and violent gusts, such as those caused by tornadoes. If there are signs that a developed cumulonimbus cloud is approaching, take immediate steps to ensure your safety?for example, by moving into a sturdy building.

Typhoon No.30 Approaching the Sakishima Islands with Very Strong Intensity: Take Strict Precautions(Analysis by Weather Forecaster Junko Miyake)

2026/10/21 14:41

Typhoon No.30's impact on the Okinawa region.



Let's look at the latest information on Typhoon No.30.
Typhoon No.30 is currently large and extremely intense.
It is moving west-northwest over the area east of the Philippines.
Its central pressure is 900 hPa, marking the peak of its development.

From here, the central pressure is expected to rise to 915 hPa tomorrow (Thursday),
and to 950 hPa the day after tomorrow (Friday).
Although the typhoon will weaken slightly,
it will still maintain very strong intensity as it approaches the Sakishima Islands of Okinawa Prefecture.

Please complete your typhoon preparations by tomorrow (Thursday),
before the rain and wind begin to intensify.



Let's zoom in a bit more.
The typhoon is increasingly likely to pass near the Sakishima Islands of Okinawa.
It will approach while maintaining its storm-force wind area.
In particular, the Yaeyama Islands, including Ishigaki Island,
should be on high alert for violent winds, high waves, and heavy rain.

On Thursday 22, maximum instantaneous wind speeds may reach 35 m/s,
strong enough to blow off roof tiles.
On Friday 23, winds may reach 60 m/s, an extremely violent level.

This level of wind strength is especially expected in the Yaeyama region.
Waves will be extremely rough, and heavy rain may continue through Saturday 24.



What happens when winds reach a maximum instantaneous speed of 60 m/s?

Outdoor activity becomes extremely dangerous.
Many trees may fall, and utility poles and streetlights may topple.
Some houses may even collapse under such violent winds.

Preparations must be completed before the storm winds arrive.
Bring any loose outdoor items indoors.

Close shutters outdoors, and stay away from utility poles and large trees.

Reinforce windows.
Even with reinforcement, windows may still break,
so stay away from windows when the winds intensify.



Now, here is the upcoming weather for Okinawa.
From Friday 23 through Saturday 24,
stormy conditions are expected mainly in the Sakishima Islands.

In particular, the Yaeyama region, including Ishigaki Island,
may experience prolonged severe weather.
Prepare early for violent winds, high waves, and heavy rain.

Even after the typhoon passes, moist air will remain,
and cloudy, unsettled weather is likely to continue.

Typhoon No.30 May Approach Honshu Next Week: Unseasonable Summer Heat Today, First Snow Possible in Hokkaido Tomorrow(Analysis by Weather Forecaster Junko Miyake)

2026/10/21 13:49

Today, Wednesday 21, record-breaking heat has been observed in some areas, but tomorrow, Thursday 22, Hokkaido may see its first snowfall of the season.



Current Weather Chart
This is the weather chart for Wednesday at 9 a.m.
A low-pressure system with a front is located over the Sea of Japan.
Warm air is flowing northward toward this low and its associated front.
Temperatures have risen mainly in western and eastern Japan.
By noon, the highest temperature was recorded in Owase City, Mie Prefecture, reaching 32.3C, breaking the previous October record.
Many locations, including Osaka and Kyoto, have exceeded 30C.



From tonight through tomorrow (Thursday), the low-pressure system over the Sea of Japan is expected to rapidly intensify as it moves toward Hokkaido.
The cold front extending from this system will pass through Honshu, bringing heavy rain and strong winds in some areas.

Rain Clouds at 11:30 a.m.
Rain clouds stretch across northern Japan and the Sea of Japan side.
At this time, rainfall is not particularly intense, but localized heavy rain and thunderstorms are expected tonight.



Rainfall Forecast
Rain clouds will spread from northern Japan to Hokuriku and the Sea of Japan side of western Japan.
Rainfall will intensify as the front passes, though the duration is not expected to be long.

When it rains, extremely heavy downpours exceeding 30 mm per hour, accompanied by lightning, are likely.
Even in places where it is not raining now, be alert for sudden heavy rain, lightning, and tornadoes or other violent gusts.

After midnight tonight, rain will stop in many areas, though some locations on the Sea of Japan side of northern Japan and Hokuriku may see rain lingering until morning.



Even after the rain stops, strong west to northwest winds will continue.
These winds will carry cold air aloft into the region.

In Hokkaido, snow is expected in mountainous areas from early tomorrow morning, and snow clouds may reach some lowland areas as well.

Since the first snowfall dates for Wakkanai and Asahikawa are October 19, it is not unusual for the first snow of the season to arrive around now.



Meanwhile, Typhoon No.30 is located over the southern seas.
It is currently large and extremely intense, with a central pressure dropping to 900 hPa, marking the peak of its development.

The typhoon will gradually weaken slightly while moving northwest.
It is expected to approach the Sakishima Islands of Okinawa around Friday 23 to Saturday 24.

The Sakishima Islands may experience very strong winds, high waves, and heavy rain at warning levels.
Before winds strengthen, secure any items that could be blown away and prepare for the typhoon.

Afterward, the typhoon may curve significantly westward and could approach Honshu.
It may take on characteristics of an extratropical cyclone while approaching and could intensify again.
Please continue to pay close attention to updates on the typhoon and low-pressure systems.



Tomorrow's Weather (Thursday)
Tomorrow, weather will improve in many areas.
Rain in Niigata and Akita will likely end by morning.
In Hokkaido, rain or snow will continue through the morning, along with strong winds.

In western and eastern Japan, sunny intervals will appear, but winds will remain strong.
Some places will again exceed 25C, but the strong winds will make it feel less warm than the temperature suggests.



Weekly Forecast
In Okinawa, the typhoon is expected to bring stormy weather from Friday 23 to Saturday 24.
After that, Honshu may also experience widespread rain and strong winds due to the influence of the typhoon or the low-pressure system that develops from it.
Please continue to stay updated with the latest information.

Weather for tomorrow, Thursday the 22nd: Snow accumulation expected in parts of Hokkaido; caution advised regarding a typhoon in the Okinawa region.

2026/10/21 13:20

As of 11:00 a.m. today, Wednesday the 21st, a low-pressure system accompanied by a front is moving northeast over the Sea of ??Japan. Due to this system and its front, rain is falling in many areas, stretching from the Sea of ??Japan side of Western Japan through to Northern Japan. Meanwhile, warm air from the south is flowing into the Pacific-facing regions of Western and Eastern Japan, leading to unseasonably warm weather.





The low-pressure system over the Sea of ??Japan is expected to intensify as it passes over Northern Japan, reaching the Sea of ??Okhotsk by tonight. Consequently, the pressure pattern will shift toward a "high-pressure to the west, low-pressure to the east" configuration by tomorrow, Thursday the 22nd.



In the Hokuriku region and along the Sea of ??Japan side of the Tohoku region, the influence of moist air and cold air will bring cloudy skies and scattered rain. On the Sea of ??Japan side of Hokkaido, it will be cloudy with intermittent rain, and some areas may experience thunderstorms. As the pressure gradient steepens around the low-pressure system, winds will strengthen; therefore, caution is advised regarding strong winds across Northern Japan through tomorrow, Thursday the 22nd. Additionally, in Hokkaido, the influx of cold air may lead to snow accumulation, so please be mindful of potential traffic disruptions caused by frozen road surfaces. The Pacific-facing regions of Western and Eastern Japan are expected to be gradually covered by a high-pressure system moving in from the continent. Consequently, Western Japan will see widespread clear skies. Eastern Japan will also be generally clear, though the influence of moist air may lead to increased cloud cover, particularly during the morning and evening hours.





Meanwhile, Typhoon No. 30 is approaching the Okinawa region. Due to the typhoon, the Okinawa region will experience cloudy and rainy weather tomorrow, Thursday the 22nd, with the possibility of thunderstorms in some areas. Heavy rainfall is expected in parts of the Okinawa main island region and the Sakishima Islands. Please exercise caution regarding strong winds and remain alert for high waves at sea.

Osaka City Hits 30 –Latest "Midsummer Day" on Record; Tokyo and Nagoya May Follow

2026/10/21 12:23

Today, Wednesday the 21st, some areas along the Pacific coast of Western and Eastern Japan are experiencing unseasonably hot weather. In Osaka City, temperatures reached 30 before 10:00 a.m., marking the latest date on record for a "midsummer day" (a day with a high of 30or higher).



A low-pressure system accompanied by a front is currently moving eastward across the Sea of ??Japan, drawing warm air from the south toward the system and its associated front.

Regions along the Pacific coast of Western and Eastern Japan are covered by a warm air mass?with temperatures reaching 18 ??at an altitude of approximately 1,500 meters?reminiscent of conditions typically seen between late August and early September. In areas where the sun is shining, temperatures have been rising since the morning. In Osaka City, a temperature of 30.0 was recorded at 9:45 a.m., climbing further to 30.8 by 11:09 a.m.?the latest date for a midsummer day on record. The temperature in Osaka is expected to reach as high as 32.

Meanwhile, in central Tokyo, temperatures have already surpassed 29, reaching 29.8 by 11:00 a.m.?just shy of the 30 threshold. Temperatures may continue to rise into the early afternoon, with a daily high of 30 currently forecast. Should it reach 30, this would also set a record for the latest midsummer day. Additionally, temperatures in Nagoya City are expected to climb as high as 31.




The unseasonably warm weather?unusual for late October?increases the risk of heatstroke, so please exercise caution if you are spending time outdoors.
Be sure to stay hydrated by drinking fluids regularly.