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62 countries

How each country warns you.

62 of 62 countries have a alerts page; 61 are verified against their sources; the others are still in review or carry points to confirm. Each row links to the page, with the official source behind it.

Europe · 34

CountryAlerts and sirens
AustriaAustria warns by siren (3 signals, tested each first Saturday of October) and by AT-Alert cell broadcast, in German and English.
BelgiumBE-Alert sends SMS, calls or e-mails to registered addresses and location-based messages to every phone in a zone.
BulgariaBulgaria uses four siren signals and BG-ALERT, a free Cell Broadcast system in Bulgarian and English.
CroatiaCroatia uses three public siren signals, tested the first Saturday of each month at 12:00, and SRUUK SMS and cell broadcast alerts to all phones.
CyprusCyprus siren tones explained, CY-Alert cell broadcast (May 2026), SafeCY push alerts, and what to do when the alarm sounds.
Czech RepublicCzech 'Všeobecná výstraha': a fluctuating siren tone for 140 seconds.
DenmarkAbout 1,000 Danish sirens and the S!RENEN phone alert.
EstoniaIn Estonia a siren has one meaning: seek shelter immediately.
FinlandA rising and falling siren for one minute means go indoors and shelter now.
FranceFrance warns with sirens tested the first Wednesday of each month and FR-Alert phone notifications, with no app or sign-up needed.
GermanyGermany warns through the NINA app, Cell Broadcast texts, radio, TV and sirens: a 1-minute rising and falling tone means danger, seek information.
GreeceGreece warns by 112 cell broadcast, on by default since December 2019, plus opt-in SMS, email or voice alerts and Civil Defence sirens.
HungaryHungary's four official alert channels: MoLaRi sirens and their signals, SMS alerts, the VÉSZ app and Kossuth Rádió.
IcelandIceland warns by area SMS from 112 Iceland (no sign-up), plus radio, TV and web.
IrelandIreland has no cell broadcast yet: procurement approved 5 June 2026, launch expected 2027.
ItalyIT-alert is Italy's cell-broadcast warning system: no app, all phones in the area.
LatviaLatvia's siren alarm is a 3-minute wave-like signal: turn on LTV1, LTV7 or Latvian Radio.
LithuaniaLithuania's 3-minute pulsating siren means 'Attention everyone': turn on LRT.
LuxembourgLU-Alert warns by app, location-based SMS and Cell Broadcast.
MaltaNo national public warning system in Malta was confirmed as operational on 20 Oct 2026. to confirm
MoldovaMoldova warns by sirens and loudspeakers, then radio and TV.
NetherlandsDutch sirens are tested the first Monday of each month at 12:00; NL-Alert reaches almost all phones by cell broadcast, no sign-up.
NorwayNorway has about 1,250 sirens with three signals, tested twice a year, plus Nødvarsel cell-broadcast alerts.
PolandIn Poland, a modulated 3-minute siren means alarm; a steady 3-minute tone means the alarm is cancelled.
PortugalPortugal warns by free location-based SMS from the sender AvisoPROCIV, plus radio, TV and the MAI Mobile app.
RomaniaRomania's four official siren signals, explained, plus RO-ALERT phone warnings, the DSU app and what to keep if power and networks fail.
SerbiaSerbia's all-clear siren is a steady 60-second tone, also used for tests.
SlovakiaIn Slovakia a 2-minute wavering siren means general threat, a 6-minute steady tone means flood.
SloveniaSlovenia uses three siren signals, tested the first Saturday of each month at 12:00, and is introducing SI-ALARM cell broadcast alerts.
SpainES-Alert sends cell broadcast alerts to every phone in the area, no app needed.
SwedenSweden warns through VMA announcements, outdoor sirens, P4 radio and SE-Alert cell broadcast.
SwitzerlandSwiss sirens sound the General Alarm (1-minute rising and falling howl) or the Water Alarm below dams.
UkraineIn Ukraine a siren wail means 'Attention everyone!': switch on radio or TV for instructions within 5 minutes.
United KingdomThe UK uses Emergency Alerts: a free cell-broadcast to 4G and 5G phones, with a siren-like sound for about 10 seconds, even on silent.

Americas · 9

CountryAlerts and sirens
ArgentinaSMN yellow, orange and red weather alerts; AlertAR cell broadcast approved in 2025 but not yet confirmed operational; sirens near nuclear plants.
BrazilDefesa Civil Alerta reaches 4G/5G phones across Brazil since 1 Oct 2025, no sign-up.
CanadaAlert Ready sends emergency alerts to TV, radio and compatible LTE or 5G phones with a distinctive tone.
ChileChile warns people by SAE cell broadcast to all compatible phones, tested Wednesdays and Thursdays at 11:00; a national tsunami siren network is tendered.
ColombiaColombia has no national disaster siren or cell-broadcast system.
Costa RicaCosta Rica's CNE declares green, yellow, orange and red alerts.
MexicoMexico's SASMEX seismic alert warns before strong shaking reaches distant cities; since 2025 government alerts also reach phones by cell broadcast.
PeruPeru alerts phones by cell broadcast (SISMATE, no app needed) and sounds SASPe sirens in 114 coastal districts for earthquakes of magnitude 6.0 or more.
United StatesU.S.

Middle East and Central Asia · 7

CountryAlerts and sirens
GeorgiaGeorgia has no published siren code or cell-broadcast system.
IsraelIsraeli alerts target each locality via sirens, the Home Front Command app and the National Emergency Portal.
Kazakhstan"Attention everyone!": sirens sound continuously for 3-5 minutes.
KuwaitKuwait has three siren tones (danger near, danger occurring, all clear) and a four-level cell-broadcast alert system in Arabic and English.
QatarQatar's Ministry of Interior sends mobile alerts that reach all phones, even on silent.
TurkeyTurkey's AFAD uses four siren signals: yellow (steady), red (rising and falling), black for CBRN (intermittent), and white for all clear.
United Arab EmiratesThe UAE National Early Warning System sends alerts to phones; NCEMA's sirens use three signals: Warning, Out of danger, Important announcement.

Asia-Pacific · 11

CountryAlerts and sirens
AustraliaEmergency Alert (SMS and voice from +61 444 444 444) and AusAlert cell broadcast; three warning levels from Advice to Emergency Warning.
IndiaIndia alerts by SACHET geo-targeted SMS and, since 2 May 2026, Cell Broadcast that cannot be disabled.
IndonesiaBMKG issues a first tsunami warning within 3 minutes, relayed by sirens, the SIRITA app, SMS blast and digital TV.
JapanJ-Alert relays missile, earthquake, tsunami and weather warnings to outdoor loudspeakers and phones.
MalaysiaNo air-raid sirens in Malaysia: MET weather warnings in three levels, the myCuaca app, flood and tsunami sirens, SMS alerts, and cell broadcast to come.
New ZealandNZ Emergency Mobile Alert reaches phones with no sign-up or app.
PhilippinesFree mobile disaster alerts under RA 10639, PAGASA Tropical Cyclone Wind Signals 1-5 and PHIVOLCS volcano Alert Levels 0-5.
SingaporeSingapore's sirens have three signals: Alarm, All Clear and Important Message, tested 15 Feb and 15 Sept at 6:20pm.
South KoreaSouth Korea has five civil defence alerts: air-raid and nuclear alerts sound a 1-minute siren plus voice.
TaiwanTaiwan's siren patterns for air raids, nuclear accidents and tsunamis, the all-clear tones, and national-level phone alerts that cannot be turned off.
ThailandThailand tested Cell Broadcast phone alerts in Thai and English in May 2025, and runs 354 tsunami warning towers.

Africa · 1

CountryAlerts and sirens
South AfricaSAWS warnings use green, yellow, amber and red levels, spread by radio, TV and social media.

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