However, we have some users who are reporting Tornados, Wildfires and Floods in downtown Vancouver. This means that all our Vancouver users get notified of a Tornado nearby.

We're going to eventually build a reputation system so that these won't be trusted and notifications won't be delivered. But that's going to be a fair bit of work and we won't be ready to ship that for months.

In the mean time, we have a situation where lots of people are being notified of fake dangerous weather through our app - is this a legal problem for us? Or just a trust problem? What's the best mechanism to deal with this in the short-term?

I think a Confirm/Deny button on each weather condition would help (if 2+ people Deny then it goes away). But that still doesn't stop the initial notification from going out (and it clutters the UI).

Have you solved similar problems? Any ideas on how we can best deal with this? Thanks!

Here's the app: https://play.google.com/store/apps/details?id=ca.cumulonimbus.barometernetwork