Maintenance workers discard a door from the theater at Camp Foster, Okinawa, that was damaged by a typhoon in August 2023. (Stars and Stripes)
TOKYO — Japan has introduced a simplified weather warning system that officials say will make it easier for people to understand disaster risks and know when to evacuate.
The country regularly experiences typhoons, heavy rain and flooding, making disaster preparedness a routine part of life.
The Japan Meteorological Agency rolled out the new system on May 29, replacing a more complicated framework that officials said contained too much information and inconsistent terminology.
“Previously, the correspondence between the alert levels was complex and difficult to understand,” the agency wrote on its website. “But with this improvement, the system now corresponds to the five levels of evacuation information, making it easier to make evacuation decisions.”
Weather threats are now grouped into four categories — heavy rain, river flooding, landslides and storm tides — and assigned one of five alert levels.
Each level is color-coded to help people quickly identify a threat’s severity.
At Level 5 — the highest — authorities issue an emergency warning indicating a disaster may already be occurring. The alert is displayed in black and signals that people should take immediate action to protect themselves.
Level 4 — a purple urgent warning — indicates dangerous conditions and generally means people should evacuate before conditions deteriorate further. Level 3 — a red warning — says the elderly and others who take longer to evacuate should begin to take action.
At the lower end of the scale, Level 2 advisories are displayed in yellow and encourage people to review evacuation plans and discuss emergency procedures with family members.
Level 1 is white and simply asks people to be on the lookout for upcoming information.
The river-flooding alert system applies to more than 400 major rivers across Japan.
The agency emphasized that people should take their situation into account during an evacuation.
“It is important to take the best possible safety action based on your own judgment at that moment, such as evacuating to the upper floors of a nearby sturdy building, as far away from rivers and cliffs as possible, rather than insisting on going to a pre-designated evacuation site,” the website said.
In addition to the Japan Meteorological Agency’s website, alerts will be distributed via news flashes and reports, loudspeakers and through emails from affected municipalities.
Additional information about the new warning system, including an English-langue guide, is available on the agency’s website.
