France tests emergency sirens and reminds residents of alert protocol

France's civil defence sirens will sound on Wednesday - and authorities have highlighted that this is a regular test. But do you know what to do in a real emergency?

France tests emergency sirens and reminds residents of alert protocol
Photo: Colin Maynard / Unsplash

The tense situation in Ukraine has prompted Pompiers de France to tweet a reminder that some 4,500 or so sirens in towns and cities across the country are tested regularly. 

The first Wednesday of the month at 12 noon is the regular time for the emergency siren tests, but the international situation has lead authorities to warn people in advance that this will happen, to avoid panic. 

You should hear the siren sound for one minute and 41 seconds. This is normal and happens 12 times a year on the first Wednesday of every month.

What to do in case of a real emergency

In case of a real emergency – such as the Lubrizol factory fire in September 2019 – the sirens will sound for much longer, in three spells of one-minute 41-seconds, broken by a five-second pause.

A 30-second siren indicates the end of any alert.

If you do hear the longer siren, indicating a genuine emergency, you are expected to be aware of likely dangers that could affect your area and take necessary precautions. 

In most cases, it means heading to a closed area – switch off any air-conditioning or other ventilation systems – and tune into France Inter and France Info or local radio stations. 


Stay in a vehicle – roads must be cleared to facilitate the action of the emergency services. A vehicle gives a false sense of security. In the event of a flood, for example, 30 cm of water is enough to carry away a car and it cannot withstand the fall of a tree.

Try to collect children from school – educational establishments will keep your children safe until the end of the emergency

Stay near windows – certain circumstances (such as explosions, high winds) can break glass and injure anyone nearby.

Open windows to find out what’s going on outside – the alert signal may be triggered due to air pollution – such as a toxic cloud – caused by an emergency incident. 

Light a naked flame – air pollution (toxic cloud, chemicals) may be flammable. Do not take the risk of triggering an explosion until the nature of the danger is fully identified.

Leave your shelter without instructions from the authorities – the purpose of the alert signal is to keep people safe. As long as the alert is not lifted (continuous siren sound for 30 seconds), leaving the shelter exposes you to danger.

Take the elevator – Weather events can lead to power cuts and elevator breakdowns. The people there would therefore risk being trapped there.

Retrace your steps – in general and especially in the event of flooding or dam failure, never go back, in case you get trapped in the middle of rising waters, for example.

Downstream from a hydraulic structure, such as a dam

A specific “fog horn” type warning signal warns the population of the rupture of the structure or of a significant release of water. It includes a cycle of a minimum duration of two minutes, composed of sound emissions of two seconds separated by an interval of three seconds.

These sirens are tested every quarter – on the first Wednesday of March, June, September and December at 12.15pm. This exercise signal has only one 12-second cycle consisting of three two-second beeps separated by a three-second interval.

If you hear this sound outside the normal tests you should:

  • Evacuate and head to higher ground listed in the plans particuliers d’intervention (PPI) of the structure. Otherwise, head to the upper floors of a high and solid building;
  • In the event of the rupture of a hydraulic structure (such as a dam), the zones located downstream are flooded in a few minutes. Evacuate if possible, or move to a high point, such as the upper floors of a high and solid building.
  • Wait for instructions from the authorities or the end of alert signal (sound continues for 30 seconds) to leave the high points. 

Member comments

  1. Bonjour, in case of an emergency described above, are there any radio – or TV stations that broadcast emergency information in other languages, e.g. English or German? Thank you.

  2. In addition to these quarterly tests many villages test their systems every Sunday (ours does) and it triggers automatically if there is a loss of power (so in incidents of high winds in particular).

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Traffic warnings for France ahead of holiday weekend

This weekend represents the first chance to 'faire le pont' and have a long holiday weekend - and the French seem set to make the most of it with warnings of extremely heavy traffic from Wednesday.

Traffic warnings for France ahead of holiday weekend

Thursday, May 26th marks the Christian festival of Ascension and is a public holiday in France.

More importantly, it’s the first time this year that French workers have had the opportunity to faire le pont (do the bridge) and create a long weekend.

In France, most public holidays fall on different days each year and if they happen to fall on the weekend then there are no extra days off work.

This year that happened on New Year’s Day (a Saturday) and both of the early May public holidays (the workers’ holiday on May 1st and VE Day on May 8th, which both fell on a Sunday).

READ ALSO Why 2022 is a bad year for public holidays

But as Ascension is on a Thursday, workers have the option to take a day of annual leave on Friday and therefore create a nice four-day weekend.

And it appears that many are planning on doing just that, as the traffic forecaster Bison futé is predicting extremely heavy traffic from Wednesday evening, as people prepare to make their after-work getaway and head to the coast, the countryside or the mountains to fully profit from their holiday weekend.

According to Bison futé maps, the whole country is coloured red – very heavy traffic – on both Wednesday and Thursday as people take to the roads to leave the cities.

Map: Bison futé

Meanwhile Sunday is coloured black – the highest level, meaning extremely heavy traffic and difficult driving conditions – across the whole country. 

Map: Bison futé

If you were hoping to take the train instead you might be out of luck, SNCF reports that most TGV services are sold out for over the holiday weekend.