Meteorological Helpful Information "Danger Warning" Added - New Disaster Prevention Meteorological Information in Five Levels - Supervised by Sysmet Co., Ltd. Meteorologist
On November 11, 2025, a proposal to revise the "Disaster Prevention Meteorological Information" concerning floods, heavy rain, landslides, and storm surges was approved by the Cabinet.
The implementation is scheduled for the rainy season in 2026.
This article will explain what disaster prevention meteorological information is, the issues with the current system, and how the new disaster prevention meteorological information will change.
Table of Contents
1. What is disaster prevention meteorological information?
2. Issues with the current disaster prevention meteorological information
3. How will the new disaster prevention meteorological information change?
1. What is disaster prevention meteorological information?
Disaster prevention meteorological information refers to information related to disaster risks announced by the Japan Meteorological Agency. It is issued when the risk of disasters such as heavy rain, floods, strong winds, lightning, storm surges, and landslides increases, serving as a basis for decisions on evacuation and work suspension.
Specifically, it includes alerts and warnings such as "Special Heavy Rain Warning," "Landslide Warning," and "Storm Surge Advisory," which are denoted by the suffixes "warning" or "advisory." It also encompasses various other information, such as "Meteorological Information on Significant Heavy Rain" that alerts to the risk of linearly organized precipitation bands, "Heat Stroke Warning Alerts" during summer, and "Typhoon Information."
2. Issues with the current disaster prevention meteorological information
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