This article describes the Japan Meteorological Agency (JMA) severe weather terminology. The JMA defines precise meanings for nearly all its weather terms as the . This article describes JMA terminology and related JMA weather scales. Some terms may be specific to certain regions.
Severe weather bulletins are issued as an advisory or a warning, depending on the risk or severity of the event. Less severe events that could be a cause for concern will be issued as a bulletin or an advisory.
provide information to supplement warnings and advisories.[2]
Weather advisories and warnings are issued when potentially hazardous weather is occurring or is forecast for the short-term period.
Due to its local-scale nature, an advisory is typically issued in advance for public forecast areas where conditions may be favorable for the development of severe weather. A warning is issued for areas where severe weather is imminent or occurring.