An alert that came late, a number that didn't match, a screen that froze. Tell us what you saw — the way a proofreader marks a page — and we'll check it against the official record.
Start a reportEarthquake · Intensity 4
Shaking expected in Chiba. Drop, cover, hold on.
5-felt stronger here
I'm in Ibaraki
An example notification and example corrections.
Reports are read by a person, not a dispatcher, and not in real time. If someone is in danger, call 110 (police) or 119 (fire and ambulance). Follow your phone's government emergency alerts (緊急速報) and your local authorities.
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For an alert, we line up what you saw with what the Japan Meteorological Agency issued and what our server logged — second by second. Where the lines agree, we move on. Where they don't, that's the bug.
An illustrative example, not a real report.
We ask for your prefecture and city, never your exact location. Your email is optional and used only to reply. Screenshots are for checking this report. Ask us any time to delete a report — the reference number is all we need.
REPORT R-261019-7K2Q
AreaIbaraki · Tsukuba
Exact position36.08291, 140.11204not collected
Emails••••@example.comused only to reply
NameKenji Satonever asked
What happenedAlert said 4; it felt like 5-.
PhoneiPhone 17 · iOS 26.1
Reports help us find and fix problems; they are not a guarantee of a reply or a fix, and they never replace official emergency information. SHINDO relays information issued by the Japan Meteorological Agency and other public bodies.
The notification, comparison and redacted report on this page are illustrations. Privacy policy · Support