Disaster Prevention Net An-an｜Heat stroke warning alert information

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Heat Stroke Alert

■Announcement date and time: July 22, 2025 17:00
■Presenting office: Japan Meteorological Agency, Ministry of the Environment
■Information format: Presentation
■Overview:
Saga Prefecture Heat Stroke Warning Alert

In Saga Prefecture, tomorrow (23rd) is expected to be dangerously hot with a remarkably high temperature and a risk of heat stroke. Please take action to prevent heat stroke.

<Actions to prevent heat stroke>
・Indoors, please use the air conditioner appropriately and stay in a cool environment.
・Please try to keep outdoor outings as short as possible and avoid hot hours. Also, take advantage of a parasol or hat.
・Regardless of whether you are indoors or outdoors, please hydrate and replenish salt frequently.
・People who are prone to heat stroke, such as the elderly, children, people with chronic diseases, people with physical disabilities, and obese people, please take action to prevent heat stroke. Also, please watch over and talk to those who are prone to heat stroke from those close to you.
・Facility managers and event organizers should check the heat index and call on facility users and event participants to prevent heat stroke.

[Daily maximum heat index (WBGT) (forecast) tomorrow (23rd)]
Karatsu 33, Imari 31, Saga 33, Ureshino 32, Shiraishi 32

The Wet Bulb Globe Temperature (WBGT) is an indicator that indicates the risk of heat stroke, calculated based on temperature, humidity, solar radiation, etc.
The heat index at information points nationwide is provided on the Ministry of the Environment's "Heat Stroke Prevention Information Site". Please check the heat index at your nearest location on the "Heat Stroke Prevention Information Site" and take action to prevent heat stroke.
[Heat Index (WBGT) Guideline]
　31 and above: Dangerous
　More than 28 and less than 31: Strict alert
　More than 25 and less than 28: Alert
　Less than 25: Caution

[Expected maximum temperature tomorrow (23rd)]
Saga 38 degrees, Imari 34 degrees

This information is released when the heat index (WBGT) is predicted to be 33 or higher, and it is information that encourages you to be aware of how to protect yourself. It will be announced around 5 p.m. or 5 p.m. on the day before the forecast date.
For areas that announced information (No. 1) around 5 p.m. the day before the forecast date, even if the latest forecast at around 5 a.m. on the same day drops below 33, the information (No. 2) will be announced to call attention to heat stroke.

Information on heat stroke warning alerts, heat indexes, and heat stroke prevention can be found here.
Please refer to the Ministry of the Environment's heat stroke prevention information site.
https://www.wbgt.env.go.jp/

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