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Special Heat Stroke Alert ・ Heat Stroke Alert

Updated at Oct 18(Sat)5:00
Today[Oct 18]
Map of Japan Alert Map(Today) Special Heat Stroke AlertsNot issued Heat Stroke AlertsNot issued WBGT forecast: 31+Issued

Heat Stress Index: WBGT

(Blue) Almost safe (Sky) Caution (Yellow) Warning (Orange) Severe Warning (Red) Danger
< 21
appropriate water replenishment suggested
21 - 25
water should be replenished often
25 - 28
rests should be provided often
28 - 31
heavy exercise prohibited
≥ 31
exercise prohibited
WBGT monitoring as of Oct 18 10:00
Sapporo
13.5
Aomori
17.4
Akita
16.9
Morioka
15.7
Sendai
19.0
Yamagata
19.3
Fukushima
18.9
Mito
21.2
Utsunomiya
21.4
Maebashi
18.9
Kumagaya
22.3
Tokyo
21.5
Choshi
21.5
Yokohama
21.9
Nagano
18.7
Kofu
19.9
Shizuoka
25.3
Nagoya
20.1
Gifu
19.9
Tsu
20.9
Niigata
18.0
Toyama
20.4
Kanazawa
22.5
Fukui
21.8
Hikone
21.3
Kyoto
21.9
Osaka
21.1
Kobe
21.2
Nara
21.5
Wakayama
21.3
Okayama
23.7
Hiroshima
22.6
Matsue
22.4
Tottori
21.7
Shimonoseki
24.1
Tokushima
22.4
Takamatsu
25.1
Matsuyama
25.0
Kochi
27.9
Fukuoka
22.2
Oita
25.7
Nagasaki
22.3
Saga
22.4
Kumamoto
25.0
Miyazaki
24.9
Kagoshima
25.0
Naha
29.3
Note

WBGT index is one of the empirical indices representing the heat stress to which an individual is exposed. (ISO7243)
WBGT varies depending on environmental situation and condition.

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