Heat Illness Prevention Information

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Heat Stroke Alerts have been issued. [Map View]

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Special Heat Stroke Alert ・ Heat Stroke Alert

Updated at Jul 15(Wed)14:00
Today[Jul 15]
Map of Japan Alert Map(Today) Special Heat Stroke AlertsNot issued Heat Stroke AlertsIssued 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 Jul 15 13:00
Sapporo
28.8
Aomori
28.5
Akita
28.7
Morioka
28.2
Sendai
30.0
Yamagata
29.6
Fukushima
30.0
Mito
31.8
Utsunomiya
31.9
Maebashi
30.4
Kumagaya
31.3
Tokyo
31.8
Choshi
30.3
Yokohama
30.7
Nagano
29.4
Kofu
30.9
Shizuoka
29.5
Nagoya
31.3
Gifu
30.7
Tsu
30.1
Niigata
30.8
Toyama
29.5
Kanazawa
28.2
Fukui
29.3
Hikone
30.1
Kyoto
29.9
Osaka
29.4
Kobe
29.7
Nara
29.3
Wakayama
31.5
Okayama
29.9
Hiroshima
27.6
Matsue
30.6
Tottori
30.2
Shimonoseki
28.9
Tokushima
30.1
Takamatsu
30.7
Matsuyama
30.7
Kochi
30.8
Fukuoka
30.0
Oita
31.5
Nagasaki
28.3
Saga
28.4
Kumamoto
30.0
Miyazaki
30.2
Kagoshima
31.1
Naha
29.2
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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