Sweden has one warning system with many outlets, and the instruction it gives is nearly always the same. The details are mostly in Swedish, so know the three actions before you need them. They work in any language.
When you need this
A siren is wailing and you can’t tell if it’s a test. Your phone has just shown a loud full-screen message in Swedish. The radio has cut to an announcement beginning “Viktigt meddelande till allmänheten”. Or SMHI, the national weather service, has put an orange warning on the region you’re driving into.
What to do the moment an alert reaches you
VMA (Viktigt meddelande till allmänheten, “important public announcement”) is Sweden’s warning for accidents, serious incidents and disruptions to vital services: a big fire with toxic smoke, a gas leak, contaminated tap water. The rescue service, police, an infection-control physician, SOS Alarm or the operator of a hazardous facility can request one, and it goes out on every channel at once.
A VMA means an imminent threat to life or health. Don’t stop to find out why:
- Go indoors immediately.
- Close windows and doors, and switch off ventilation: air conditioning, fans, a caravan’s roof vent.
- Listen to Sveriges Radio P4, the local channel, on a radio, in the car or in the Sveriges Radio Play app.
- Read the details on krisinformation.se, the government’s crisis site, which has English pages. Otherwise put the Swedish text through a translation app.
- Stay put until the all-clear.
If you’re driving, stop somewhere safe, close the vents and turn the car radio to P4. And don’t ring 112 to ask what’s going on. That line is for people who need help. For information about the incident, call 113 13, or +46 77 33 113 13 from a foreign phone.
The siren: four signals and when it’s only a test
Swedes call the outdoor siren Hesa Fredrik, “hoarse Fredrik”. There are about 4,500 horns around the country, and they have four signals:
| Signal | Pattern | What to do |
|---|---|---|
| Important public announcement (VMA) | 7 seconds on, 14 seconds off, for at least two minutes | Indoors, close up, listen to P4 |
| Emergency alarm (beredskapslarm) | 30 seconds on, 15 seconds off, for five minutes | Indoors, listen to P4 |
| Air-raid alarm (flyglarm) | Short blasts for one minute | Go to the nearest shelter, basement or protected room |
| All-clear (faran över) | One unbroken tone for 30 seconds | The danger is over |
The test rule is worth memorizing. The sirens are tested at 15:00 on the first Monday of March, June, September and December that isn’t a public holiday. If 6 June, Sweden’s National Day, falls on a Monday, the June test moves to the 13th. A test sounds the VMA signal six times and finishes with the all-clear. The next test is on Monday 7 December 2026. At that date and time, do nothing. At any other time, the sound is real.
The sirens don’t cover everywhere. On a forest trail, a mountain or out at sea you probably won’t hear one. There, your phone and a radio are your only warning.
SE-Alert: warnings straight to your phone
This is the change most guides haven’t caught up with. SE-Alert, Sweden’s cell-broadcast warning system, went live on 1 July 2026. It sends a VMA to every compatible phone inside a defined area within seconds. You don’t need an app, and you don’t need to register. The phone just has to be switched on, connected to a mobile network and running updated software.
At launch it reached an estimated 90–95% of phones in Sweden and covered about 95% of the country’s land area. The first test ran on 7 September 2026 in Stockholm and Gotland counties, on the same Monday as the siren test. A nationwide test is planned for December 2026, so a test alert may reach you then. A test needs no action.
The system is run by Myndigheten för civilt försvar, the Swedish Agency for Civil Defence. It was called MSB until 1 January 2026, and many pages still use the old name. The web address is now mcf.se. It’s the same agency, so treat the new domain as genuine.
Will a foreign phone get the alert?
Honestly: possibly, but no one promises it. The agency says SE-Alert reaches “all compatible mobile phones” in the area. As of September 2026, neither the agency nor the government has said anything specific about foreign-registered phones roaming on Swedish networks, or about the language the message comes in. Krisinformation’s own guidance is that VMA information is primarily broadcast in Swedish.
The same goes for the text messages that are also listed as a VMA channel: nothing official says whether they reach a foreign SIM. So treat a phone alert as a bonus and keep a second channel. The siren pattern and the three actions above need no phone and no Swedish.
The 112 app, radio and Krisinformation
These are the channels a visitor can actually set up:
| Channel | What it gives you | The catch |
|---|---|---|
| SOS Alarm’s 112 app | VMAs for the place you’re in, nearby incidents, your coordinates, one-tap 112 | Swedish only; needs location and notifications switched on |
| Sveriges Radio P4 and SR Play | The full VMA read out, plus updates | In Swedish |
| krisinformation.se | Details in writing, with English pages | You have to go and look |
| TV | VMA broadcast on Swedish channels | Only if a TV is on |
| Landline | Recorded message to phones in the affected area | Only at your accommodation |
The 112 app is worth installing even if you read no Swedish. Its alert sound and map tell you something is happening near you, and it filters by location, so you only get VMAs for where you are. That means it shows nothing if location is off. It’s free on both app stores, and it also shows your coordinates, which is what you read out when you call 112 from somewhere without an address.
Fire bans are a separate system. In urgent cases a ban can be read out on the radio, but the reliable lookup is the national map, covered in how to check for a fire ban.
SMHI weather warnings: yellow, orange, red
SMHI’s weather warnings are a separate system from VMA. They are impact-based and regional: the level depends on what the weather will do to that place. The same snowfall can trigger a warning in a southern city and none in the northern interior.
| Level | Symbol | Meaning |
|---|---|---|
| Yellow | Circle | Consequences for society, some risk to the public |
| Orange | Diamond | Serious consequences, danger to the public |
| Red | Triangle | Very serious consequences, great danger to the public |
Yellow means disruption and some risk. Orange and red are the levels to change your plans for, especially before a mountain hike or a long winter drive. SMHI also publishes meddelanden (messages) about heat or fire risk. They carry no color level, but they’re still worth acting on.
Setting up before you travel
- Update your phone’s operating system. SE-Alert needs current software.
- Install the 112 app and allow location and notifications.
- Install Sveriges Radio Play for P4 wherever you are.
- Bookmark krisinformation.se in English.
- Save +46 77 33 113 13, the information line for major incidents.
- Learn one phrase: Viktigt meddelande till allmänheten means act now.
If you want the bigger picture, the preparedness brochure In case of crisis or war (Om krisen eller kriget kommer, 2024 edition) was sent to 5.2 million Swedish households in November 2024. It can be downloaded in English from mcf.se.
Practical information
| Item | Detail |
|---|---|
| Warning system | VMA: radio, TV, SE-Alert, SMS, apps, landlines, outdoor sirens |
| Siren test | 15:00, first non-holiday Monday of March, June, September, December (13 June if 6 June is a Monday) |
| Next siren test | Monday 7 December 2026, 15:00 |
| SE-Alert | Live since 1 July 2026; no app or registration; nationwide test planned December 2026 |
| SE-Alert reach at launch | About 90–95% of phones in Sweden, about 95% of land area |
| Foreign phones | Not officially addressed; don’t rely on it |
| Language | Primarily Swedish; English pages on krisinformation.se |
| Radio | Sveriges Radio P4, local channel; SR Play app |
| 112 app | Free; Swedish only; location-filtered VMAs |
| Information line | 113 13, or +46 77 33 113 13 from a foreign phone |
| Weather warnings | SMHI yellow / orange / red |
| Agency | Myndigheten för civilt försvar (formerly MSB), mcf.se |
| Cost | Receiving alerts is free |
FAQ
What does the siren in Sweden mean?
A seven-second tone with fourteen-second pauses, repeated for at least two minutes, is a VMA — an imminent threat to life or health. Go indoors, close windows, doors and ventilation, and listen to Sveriges Radio P4. At 15:00 on the first non-holiday Monday of March, June, September or December it is only the scheduled test.
When is Hesa Fredrik tested?
At 15:00 on the first Monday of March, June, September and December that is not a public holiday; if 6 June falls on a Monday, the June test moves to the 13th. The test runs the warning signal six times, then ends with the 30-second all-clear. The next test is on Monday 7 December 2026.
What is SE-Alert?
Sweden’s cell-broadcast warning system, live since 1 July 2026. It sends a VMA to every compatible phone in a defined area within seconds, with no app and no registration — the phone just needs to be on, connected and updated. It was first tested on 7 September 2026; a nationwide test is planned for December 2026.
Will I get Swedish emergency alerts on my foreign phone?
Possibly, but do not count on it. SE-Alert goes to all compatible phones in the area, yet no official source says whether foreign-registered phones roaming in Sweden display it, or in which language. Keep radio, krisinformation.se and the 112 app as backup, and learn the siren signal — it needs no phone.
Is the 112 app in English?
No — SOS Alarm publishes it in Swedish only. It is still worth installing: it pushes VMAs relevant to where you are, shows your coordinates for a 112 call, and lists nearby incidents and defibrillators. It needs location and notifications switched on, and is free on both app stores.
What do SMHI’s yellow, orange and red warnings mean?
Yellow means weather can cause consequences for society and some risk to the public; orange, serious consequences and danger; red, very serious consequences and great danger. The warnings are impact-based and regional, so the same snowfall can trigger a warning in a southern city and none in the northern interior. Orange and red are the levels to change plans for.
Where can I read Swedish emergency information in English?
Krisinformation.se, the government’s crisis-information site, has English pages on public announcements, warning signals and current events. The preparedness brochure In case of crisis or war can be downloaded in English from mcf.se. For questions during a major incident, call 113 13, or +46 77 33 113 13 from a foreign phone.
Related guides
- 112 and Sweden’s emergency numbers — when you need help rather than information
- Fire bans explained — the other warning a summer visitor must check
- Car breakdown and roadside assistance — if a weather warning catches you on the road
- Healthcare for visitors — where to go once the danger has passed
Facts verified 2026-09-24. Sources: Myndigheten för civilt försvar (formerly MSB), Krisinformation.se, Regeringen, SOS Alarm, SMHI and Sveriges Riksdag — full register in this topic’s source file. SE-Alert is being rolled out through 2026; we publish no current alert, weather warning or fire-ban status. Found something outdated? Tell us and we’ll fix it.