Terror alert system

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Terror alert systems are standardised emergency population warning systems for describing and disseminating information about terrorism-related threats. They became more popular after the September 11 attacks on the United States in 2001.

Australia

National Counter-Terrorism Alert Level

Certain - terrorist attack is imminent or has occurred
Expected- terrorist attack is highly likely
Probable - terrorist attack is likely
Possible - terrorist attack could occur
Low - terrorist attack is not expected

Administered by the Federal Attorney-General's Department.

France

Plan Vigipirate

Yellow - to stress vigilance
Orange - to warn of terrorist action
Red - to warn of serious attempts
Crimson - to warn of major attempts

Ireland (Republic of)

International Terror Threat Level

Low: An attack is deemed unlikely.
Moderate: An attack is possible, but not likely.
Substantial: An attack is a strong possibility.
Severe: An attack is highly likely.
Critical: An attack is imminent or has occurred.

Administered by the Garda Síochána.

Since November 2015, the international terrorism threat level is considered to be at moderate, meaning an attack is "possible but not likely".

Netherlands

Russia

Blue - an unconfirmed information about real terroristic threat
Yellow - a confirmed information about real terroristic threat
Red - an information about committed terrorist act

United Kingdom

Low - an attack is unlikely
Moderate - an attack is possible, but not likely
Substantial - an attack is a strong possibility
Severe - an attack is highly likely
Critical - an attack is expected imminently or has occurred

Administered by the Joint Terrorist Analysis Centre

United States

Wikinews has related news:

US government to replace color-coded terror alert system

Homeland Security Advisory System

Low - Low risk of terrorist attacks
Guarded - General risk of terrorist attacks
Elevated - Significant risk of terrorist attacks
High - High risk of terrorist attacks
Severe - Severe risk of terrorist attacks

Administered by the Department of Homeland Security

National Terrorism Advisory System

Elevated Threat - Significant or high risk of terrorist attacks
Imminent Threat - Critical risk of terrorist attacks

References

↑ O'Keeffe, Cormac (2 May 2016). "What is the reality of the threat posed by Islamic extremists in Ireland?". Irish Examiner. Archived from the original on 3 May 2016. Retrieved 11 May 2016.
↑ "Terror threat level unaffected by attacks". Irish Independent. 27 June 2015. Archived from the original on 25 September 2015. Retrieved 1 July 2015.
↑ Williams, Paul; Brady, Tom (24 November 2015). "Units to counter terrorism step up training". Irish Independent. Archived from the original on 25 November 2015. Retrieved 24 November 2015.
↑ УРОВНИ ТЕРРОРИСТИЧЕСКОЙ ОПАСНОСТИ | Национальный антитеррористический комитет(in Russian)

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