Twitter Alerts: new service to help during emergencies, natural disasters comes to the UK As of today (November 18), Twitter users will be able to register for the service which aims to "get critical information to the right people at the right time." For users who opt-in to using Twitter Alerts, tweets from certain accounts that are deemed to be important alerts will be marked with a small orange bell, meaning the tweets will stand out from the user's timeline. A text message of the tweet will also be sent directly to the user's phone, with users of Twitter for iPhone and Android also receiving a push notification. A total of 57 accounts from the UK and Ireland have already signed up to the programme. All 47 UK police forces are set to be involved, as is An Garda Síochána. Other notable inclusions are the London Fire Brigade, the Foreign Office and the Child Exploitation & Online Protection Centre (CEOP). To subscribe to the service, Twitter users should go to twitter.com/[username]/alerts. Twitter has noted that it will have no say in what tweets are marked as alerts, but has said that "this feature is intended for crisis, disaster and emergency communications." The rollout of Twitter Alerts in the UK and Ireland follows the implementation of a similar service in the US, Japan and Korea. In the US, the service has been used to inform citizens of the closure of national parks during the Government shutdown, as well as unfolding criminal situations, among other things.