In our region today earthquake with magnitude of 8.1 hit at 1pm Pakistani time it affected Afghanistan, Pakistan and India.
What facebook send notifications to all his members .
Are you ok? It looks like you're in the area affected by Afghanistan Earthquake. Let friends know that you're safe.

When you click on this notification

After this a new window comes and it shows
Afghanistan Earthquake

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you can click on the button I'm safe
and below you.
It will show you your friends and you mark them as safe.
This is the new thing which facebook introduce and we just saw today in Pakistan, Afghanistan and India as notification