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A black-and-purple banner over a broadcast.
Also known as: Emergency warning Japan, Special warning JMA
Marks a Japan Meteorological Agency emergency warning, the highest class of Japanese weather warning.
Warns of a weather event of a severity expected once in several decades.
Contexts: Public information
Is defined by a return period rather than by a threshold value, so the same rainfall may be an emergency warning in one prefecture and an ordinary warning in another; the class was created in 2013 after the agency concluded that its existing top warning no longer conveyed exceptional danger because it was issued too often.
Contexts: Public information
A broad banner in a dark tone carrying written characters in a contrasting tone, run across the top of a broadcast picture.
The action scale this warning class maps onto.