Skip to content

Educational guide, not an alert service: no live data. Always follow official instructions from JMA, your municipality, police, fire and staff. In an emergency, protect yourself first. Full disclaimer

FreeJapan Alert Decoder

Japan alert decoder · 早期注意情報（警報級の可能性）

Level 1 Early Advisory · Level 1

Stay alert and check updates · official rules as of 2026-10-17

← Decode another alert · Earthquake Early Warning on a train

Or tap one

Where are you? (optional)
Level 1Stay alert and check updates

早期注意情報（警報級の可能性）

Level 1 Early Advisory

White, Alert Level 1: warning-level weather is possible in the coming days (up to 5 days ahead). Nothing to do yet except plan.

What to do now

  1. Watch the forecast and plan around it.
  2. Know where your nearest shelter is.

Issued by: JMA. Live status: JMA warnings map (English)JMA earthquake information (English)JMA tsunami information (English)

source 1source 2

Share on X

Educational guide, not an alert service: no live data. Always follow official instructions from JMA, your municipality, police, fire and staff. In an emergency, protect yourself first.

Data as of 2026-10-17 from official JMA, Cabinet Office, Cabinet Secretariat (J-ALERT) and Ministry of the Environment pages, with official names from the JMA multilingual dictionary (2026-03-26). Not affiliated with JMA or any government agency.

Educational guide, not an alert service: no live data. Always follow official instructions from JMA, your municipality, police, fire and staff. In an emergency, protect yourself first. Data as of 2026-10-17 from official JMA, Cabinet Office, Cabinet Secretariat (J-ALERT) and Ministry of the Environment pages, with official names from the JMA multilingual dictionary (2026-03-26). Not affiliated with JMA or any government agency.