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Special Heat Stroke Alert ・ Heat Stroke Alert

Updated at Apr 27(Sat)14:00
Today[Apr 27]
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 Apr 27 14:00
Sapporo
19.8
Sendai
20.3
Tokyo
21.3
Niigata
17.7
Nagoya
18.3
Osaka
17.9
Hiroshima
18.2
Kochi
21.2
Fukuoka
21.8
Kagoshima
25.3
Naha
27.7
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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