According to the Mirror, these services, who have signed up for the alert system, would be able to mark certain tweets as alerts by putting an orange bell next to them to stand out to followers.
The alert system has been designed to deliver information quickly and effectively in times of natural disasters or other emergencies.
The report said that once users they sign up to receive Twitter alerts from one of these services, they will get a text message notification whenever the group sends a tweet marked as an alert.
Users can subscribe to the alert system from their chosen account's alert setup page at twitter.com/[username]/ alerts.
The Twitter Alerts as push notifications is compatible with Twitter for iPhone version 5.10 or higher, and Twitter for Android 4.1.6 or higher.