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The Japan Meteorological Agency will begin issuing forecasts 2-3 hours before the formation of linear rainbands starting in late May, aiming for a 50% accuracy rate to strengthen disaster response.

'Immediate Linear Rainband Forecast' System Introduced

To reduce damage from heavy rainfall caused by linear rainbands, the Japan Meteorological Agency will introduce a new 'Immediate Linear Rainband Forecast' system starting in late May. This system aims to provide forecast information 2-3 hours before a linear rainband forms. Improving upon the previous half-day forecast, which had an accuracy rate of less than 20% last year, the new immediate forecast is expected to achieve an accuracy rate of about 50%. This is anticipated to provide the public with crucial early response time for disasters.

Call for Early Disaster Preparedness Actions

The Japan Meteorological Agency emphasized that if forecast information is issued, disaster preparedness actions should be taken before the situation becomes severe. Those in high-risk areas, such as near cliffs or rivers, should pay close attention to their surroundings and local government evacuation information. A linear rainband is a phenomenon where developed cumulonimbus clouds repeatedly bring concentrated heavy rainfall to one area, causing significant damage in places like Suzu City, Ishikawa Prefecture (September 2024 video footage). The introduction of this system is expected to minimize casualties and enhance disaster response capabilities.

*Source: YouTube: Nittele NEWS (2026-03-10)*

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