You can edit alerts you've set up by clicking on the pencil icon under the "My Alerts" section. Clicking on the settings cog icon will allow you to pick a specific delivery time for your alerts ...

Separate icons exist for friend requests and messages ... your Facebook notification settings to ensure you receive only the alerts that are important to you, enhancing your overall Facebook ...

The statewide alerts — Blue, Amber, Silver, and and others — are meant to gather tips from the public to help capture criminals who kill or seriously hurt local, state or federal law ...