There is a risk of a linear rain band forming in the Amami region from early morning until noon on the 26th. be careful

2026/05/25 18:36

In the Amami region, a linear rain band will form from early morning until noon on the 26th, and the risk of heavy rain disasters may increase rapidly. Please be careful of landslides, flooding of low-lying areas, and rising river waters in the Amami region until the 26th. Also, be wary of lightning, tornadoes, and other strong wind gusts.



In the Amami region, heavy rain or very heavy rain with thunder will fall until noon on the 26th, leading to heavy rain in some places. It is possible that the rain will continue after that.
The predicted 24-hour precipitation from 18:00 on the 25th to 18:00 on the 26th is expected to be 150 mm

#Amami region.

If a linear precipitation band occurs, there is a risk of further rainfall locally.



If there are signs that a developed cumulonimbus cloud is approaching, please take precautions such as moving inside a building.

Today, the 25th (Monday) Weather forecast: Sunshine is shining in many places, but be careful of sudden heavy rain in Okinawa

2026/05/25 12:29

The afternoon of today, the 25th (Monday), is expected to be sunny in many places from Hokkaido to Kyushu. There is a chance of showers, but they are likely to be limited to areas along the mountains. However, the atmospheric conditions in Okinawa continue to be unstable, and you need to be careful about sudden strong rain and thunderstorms.



Today, the 25th (Monday), in the afternoon, it will be mostly sunny over a wide area from northern to western Japan, gently covered by high pressure.
However, from Kanto to Kyushu, there will be showers in the afternoon, mainly along the mountains, but the rain is expected to be short-lived and not strong.
Meanwhile, Okinawa and Amami will continue to experience unstable atmospheric conditions as the rainy season front extends. Be careful of lightning and sudden heavy rain. Particularly in the main island of Okinawa, there will be locally heavy rain.



In areas west of the Tokai region, there are midsummer days where the maximum temperature is over 30 C, with temperatures reaching 33 C in Kurume City, Fukuoka Prefecture and Hita City, Oita Prefecture, 32 C in Saga City, and 31 C in Osaka City and Nara City.In Kanto, Hokuriku, and Tohoku, there are also places expected to approach 30 C, mainly inland.

Also, there are some places, especially in the Kanto and Tohoku regions, where the difference in experience compared to the previous day is significant. It will suddenly get hot, so please be careful not to get sick.

Rainy season front stagnates; warning-level heavy rain is likely to occur on Okinawa main island; be careful of heavy rain disasters

2026/05/25 07:49

The rainy season front is extending from northern China to the Nansei Islands, extending to the south of Japan. In the main island of Okinawa, atmospheric conditions are extremely unstable due to the rainy season front and moist air flowing into the front, so there is a risk of warning-level heavy rain in the south-central and northern parts of the main island today, the 25th, depending on the degree of rain cloud development.



[Rain Forecast]
+Precipitation expected for 1 hour today, 25th (in places with the most)
Central southern part of the main island 20mm
Northern main island 30mm
+24-hour precipitation expected by dawn on the 26th tomorrow (in places with the most)
Central-southern main island 40mm
Northern main island 60mm

[Disaster prevention matters]
In the northern part of the main island, active rain clouds associated with the rainy season front are likely to form today, the 25th, and heavy rain of 30 mm or more per hour is expected in some places. In the central and southern parts of the main island and the northern part of the main island, there is a risk of warning-level heavy rain depending on the degree of rain cloud development, so careful attention should be paid to landslides, flooding of low-lying areas, and rising river waters.
Also, the atmospheric conditions in the main island of Okinawa will be unstable through tomorrow, the 26th, so please be careful of lightning, tornadoes, strong gusts of wind, and sudden heavy rain.

Weather for today, the 25th (Monday): Sunshine reaches a wide area; rainy season continues in Okinawa

2026/05/25 06:20

Today, the 25th (Monday), the area around Japan is expected to be covered by a mobile anticyclone. The sun is shining widely and temperatures are expected to rise. On the other hand, in Okinawa and Amami, the rainy season will continue and there will likely be periods of rain.



In the morning, there will be some lingering rain in Hokkaido, mainly in eastern Hokkaido, but the weather will gradually improve. It looks like the sun will return from the Sea of Japan side in the afternoon.

Tohoku to Kyushu will be covered by high pressure, so sunlight will reach a wide area. The weather will be sunny during the day, and the temperature will rise in many places compared to the previous day (24th), with temperatures likely to reach around 30c in many places. In Tohoku and eastern Japan, the temperature difference from the previous day is large, so please take care of your health.

In the Nansei Islands, the rainy season front will remain stationary and the weather will be prone to rain. Please be careful as there is a risk of heavy rain and thunderstorms in Amami and the main island of Okinawa.

[Starting soon] New weather disaster prevention information begins [Landslide edition]

2026/05/24 18:41

Starting from late May, the weather and disaster prevention information system that is directly connected to our lives will be significantly updated.
In the new information, the degree of disaster risk is shown as "level + number", and the color coding is unified, making it easier to make evacuation decisions.



#This change will be applied to the following four disasters.
+Heavy rain
+River flooding
+Landslide disaster
+Storm surge
This article will focus on the changes in landslide information.



#Conventional issues
Previous landslide information had the following difficulties in understanding.
+The names are different depending on the level, such as "warning" and "warning information"
+Indicators are not unified, such as the soil rainfall index for levels 2, 3, and 5, and the soil rainfall index + 60-minute rainfall for level 4



It was pointed out that these points could lead to confusion among residents in response to information and
delays in evacuation decisions.

#Points to be improved with the update
+The alert level is clearly stated at the beginning of the information,
+Evacuation behavior becomes easier to intuitively understand
+Unification of names
+Unification of indicators for announcements

#Standards for level 3 equivalent information have changed significantly
Previously,
many "heavy rain warnings (landslides)" equivalent to level 3 were announced,
There were many misses = low accuracy rate.

From now on,
will be announced as level 3 when it is expected that the standard for level 4 will be reached within 3 hours.
This is expected to significantly reduce the number of Level 3 presentations that do not reach Level 4
/improve the accuracy rate
.



On the other hand, changes are also expected, such as
+The time from level 3 to level 4 will become shorter
+There will be more cases of level 4 being announced without going through level 3
.
For this reason, it is important to check weather information more frequently than ever before to understand the
situation.




#What's important is "color" and "level"
+What color is at which level
+What actions should be taken at each level
Just understanding this will greatly change your actions in an emergency.



Please use the new weather disaster prevention information to take early evacuation actions.

Tomorrow, the 25th (Monday), the weather will improve around Honshu, and the next day the weather will be downhill from the west.

2026/05/24 12:36

Tomorrow, the 25th (Monday), the area around Honshu will be covered in high pressure, and the weather is expected to generally improve.



There will be some lingering rain in Hokkaido in the morning, but it will gradually stop.
Meanwhile, the front is stationary near the Okinawa region, and rain is expected to continue.
The ground has become loose in some areas due to the rain since the weekend, so please be careful of landslides.



The sunshine will return near Honshu and the temperature will rise.
In the evening, there is a possibility of showers along the mountains on the Pacific side and inland areas of the Chugoku region and northern Kyushu.
When going out, it is a good idea to bring a folding umbrella just in case.

The next day, the 26th (Tuesday), a low pressure system accompanied by a front from the Yellow Sea will move eastward, and the weather is expected to turn downward from the west.





The rain will gradually spread into eastern Japan into Wednesday.

The coming week is expected to continue to be cloudy due to low pressure and fronts.



Please check the latest weather forecast before going out.

Weather for today, the 24th (Sunday): Clouds are spreading across the country, leading to rain.

2026/05/24 07:42

There is currently a low pressure system in the Sea of Japan that is moving northeast. There is a front extending east to west in the south of Japan, and there is a low pressure system above the front that is moving east. Additionally, a high pressure system centered east of Japan is protruding around eastern Japan.
Currently, due to the influence of moist air caused by low pressure and fronts, it is raining in some places on the Sea of Japan side of Tohoku, Hokuriku, Kanto and the Pacific side of Kyushu, and Okinawa.
Today, clouds will spread across the country and the weather will be prone to rain.



It is raining from the Sea of Japan side of Tohoku to Hokuriku due to the influence of rain clouds associated with a low pressure system moving over the Sea of Japan. After this, rain is expected to gradually spread from the west in Hokkaido from the afternoon.

From Kanto to Kyushu, mainly on the Pacific side, clouds will spread easily due to the influence of moist air from fronts and low pressure systems, and there will be places where it will rain. Also, there are likely to be some showers even inland, so it's a good idea to bring a folding umbrella even if it's not raining when you go out.

In the main island of Okinawa, extremely heavy rain from a linear rain belt continued to fall in the same area yesterday, the 23rd (Saturday), and the ``Okinawa local weather information regarding significant heavy rain No. 1'' was announced at 7:58 pm on the 23rd.
Today, the 24th (Sunday), rain is expected to continue in some places due to the rainy season front.
Atmospheric conditions are extremely unstable. In the Okinawa main island region and Daitojima region, please be careful of strong gusts such as lightning and tornadoes. There are also areas where the ground has become loose due to heavy rain. Please be careful about landslides.



The expected maximum temperature is expected to be about normal from northern Japan to Kanto, and higher than normal in many places from Hokuriku and Tokai to western Japan.
Even on days with little sunlight, please be careful about heatstroke, especially if you are involved in sports or farming.

"Weather information regarding significant heavy rain" in Okinawa Prefecture: Extremely heavy rain due to linear precipitation belts

2026/05/24 01:30

The Okinawa Meteorological Observatory announced the ``Okinawa local weather information regarding significant heavy rain, No. 1'' at 7:58 pm on May 23rd.
In the main island of Okinawa, extremely heavy rain continues to fall in the same area due to the linear precipitation belt. The risk of life-threatening landslides and floods is rapidly increasing.



Atmospheric conditions in the Okinawa main island region and Daitojima region are extremely unstable due to the rainy season front and moist air flowing into the front.
In Goya, Okinawa City, Okinawa Prefecture, extremely heavy rain of 73.0 mm was observed in the hour until 20:04 on the 23rd.

In the Okinawa main island region, be wary of landslides, and be careful of flooding of low-lying land and rising water levels of rivers. In the Okinawa main island region and Daitojima region, please be careful of strong gusts such as lightning and tornadoes.

[Rain report]
Precipitation amount from the start of rain (0:00 on the 22nd) to 23:00 on the 23rd (preliminary figures from AMeDAS)
Okinawa main island region
Kumejima-cho Janado 255.0mm
Kumejima Airport 205.5 mm
Okinawa City Goya 194.0 mm
Izena Village Uchihana 149.0 mm
Kunigami Village Oku 131.0 mm

[Rain Forecast]
The predicted 1-hour rainfall on the 24th is high in places,
Okinawa Main Island Region: 30mm
The expected 24-hour precipitation from 0:00 on the 24th to 0:00 on the 25th is high in some places. This weather information uses the keyword "linear precipitation belt" to explain the situation in which extremely heavy rain continues to fall in the same place due to linear precipitation bands, as the risk of disasters caused by heavy rain is rapidly increasing.
This information corresponds to alert level 4, which requires evacuation from hazardous areas.
If you are in a dangerous location such as near a cliff or river, please follow the evacuation information issued by your local municipality and take immediate evacuation action. If evacuating to an evacuation site is actually dangerous, please ensure your own safety by moving to a building as far away from a cliff or stream as possible, or to a higher location that is less likely to flood.
Also, even if no evacuation information has been issued by the municipality, there is a risk that the situation will deteriorate rapidly in the future. Please check information such as danger level distribution and water level information, and if you feel even the slightest danger, please make the decision to move to a safer location.

Okinawa main island/Daitojima region: risk of lightning, gusty winds, and warning-level heavy rain into tomorrow

2026/05/23 13:36

Atmospheric conditions in the Okinawa main island region and Daitojima region are extremely unstable due to the influence of the front. Currently, there are active rain clouds and lightning has been observed in various places.
In Izena, Izena Village, Shimajiri District, Okinawa Prefecture, heavy rain exceeding 40mm per hour was observed this morning.



Unstable conditions are expected to continue due to the rainy season front and moist air flowing into the front. Please be careful of strong wind gusts such as lightning and tornadoes through the 24th.

[Rain Forecast]
1-hour precipitation expected on the 23rd
Okinawa Main Island region 40mm (in areas with the most)
Forecasted from 12:00 on the 23rd to 12:00 on the 24th 24-hour precipitation
Okinawa Main Island Region 80 mm (most places)

In the Okinawa Main Island Region, there is a risk of warning-level heavy rain on the 23rd depending on the development of rain clouds. Be wary of landslides, flooding of low-lying areas, and rising river waters.



Additionally, the front is expected to remain nearby until the 24th. If there are signs that a cumulonimbus cloud is approaching (suddenly darkening sky, thunder, cold wind, etc.), please take precautions such as moving inside a building.

Today's 23rd (Saturday) Afternoon Weather Warning of showers in places from western to eastern Japan

2026/05/23 12:31

Today, the 23rd, clouds will continue to spread over western and eastern Japan in the afternoon, and it will rain in places. In Kyushu, there are places in midsummer where the maximum temperature is over 30 degrees Celsius, while on the Pacific side of Kanto and Tohoku the air is likely to remain cool, although not as cold as yesterday.
Today, the afternoon of the 23rd, we will continue to be affected by humid air, mainly on the Pacific side.





Looking at the weather forecast for this afternoon, it looks like it will rain intermittently in Okinawa. Please be aware that there is a possibility of heavy rain in the Okinawa main island region into the evening.
The sunlight is likely to reach Kyushu mainly in the northern part. It rains easily in Shikoku and the Chugoku region, and there are likely to be some places where the rain can be heavy at times. There will be a lot of clouds in the Kinki, Tokai, and Kanto-Koshin regions, and it will rain in places from the evening onwards. Clouds are gradually spreading in Hokuriku, and there are likely to be some places with showers. Clouds will gradually increase in northern Japan, but there doesn't seem to be any major change in the weather.


The highest temperature in the afternoon will be the same or higher than the previous day in many places. In Hita City, Oita Prefecture, the temperature is 31 degrees Celsius, and in Kumamoto, it is 30 degrees Celsius, so there are places in Kyushu where it is midsummer, so it is necessary to take precautions against heat stroke. Make sure to drink plenty of water and wear well-ventilated clothing.

The Pacific side of the Kanto and Tohoku regions will be broadly at the same level as April, although it will be higher than the previous day. The wind is blowing from the east, making it feel cooler than the actual temperature. You will also need something to wear during the day.