Magnitude 2: you literally can't feel one of these. Also, they happen every day. You're not going to get an alert for this. Magnitude 4: maybe stop leaning ove

Magnitude 2: you literally can't feel one of these. Also, they happen every day. You're not going to get an alert for this. Magnitude 4: maybe stop leaning over the balcony? Otherwise, nothing. Magnitude 5+: get under the table or into a doorframe. Face away from glass windows.