Power cut
Fridge, light, heat and cooking for the first 48 hours.
What your government recommends, country by country: the water, the food, where to shelter, who to call. Every line links to the official source.
01 · Your country's guide
We compared the official emergency lists of 62 governments. 41 of them list 112 as an emergency number, and 29 build household supplies around 72 hours (3 days), the most common target; Germany asks for 10 days and Austria for 14. Choose your country to see its own list.
Sirens, phone alerts, radio and apps: how each government warns its population.
ShelterPublic or privateSome countries plan a shelter place for everyone; most have no public network.
02 · Guides
67 guides on power cuts, water, storms, sirens and radiation. Each opens with a short answer and cites the agency behind every figure.
Canada · what it asks, page by page →
Fridge, light, heat and cooking for the first 48 hours.
Where to go and what to do in the first minutes.
Fallout, doses, and what actually protects you.
How much to store, make it safe, and how long it keeps.
Keep one room warm without fire. Heatwaves and smoke.
Natural hazards at home and what to prepare.
The people and animals who need their own list.
What goes in the bag, and what to keep ready.
03 · Questions people ask
Each answer is the opening of a verified guide. Follow the link for the full sources.
Canada · official supply target at least 72 hours · the official list →
Official figures run from 2 to 5 litres of water per person per day: Germany 2 litres for drinking and cooking only 4, Switzerland 3 litres 5, Canada about 4 litres 3, Sweden 3 to 5 litres 6, and the US one gallon (about 3.8 litres) 12.
Full guide →A 72-hour emergency kit holds drinking water, non-perishable food, a manual can opener, a flashlight, a battery or hand-crank radio, spare batteries, a first aid kit, personal medication, cash and copies of key documents.
Full guide →The US CDC asks for at least 1 gallon (about 3.8 L) of water per person per day for 3 days and suggests a 2-week supply if possible 1.
Full guide →Keep the fridge and freezer closed: the CDC says food stays safe up to 4 hours in a refrigerator, 48 hours in a full freezer and 24 in a half-full one 101.
Full guide →Commercially canned low-acid foods such as meat and vegetables keep their quality for two to five years, and high-acid cans such as tomatoes and fruit for up to 18 months 2.
Full guide →A family emergency plan is a short written agreement on five things: how you will get alerts, where you will meet if you cannot go home, who everyone calls (including one contact outside your area), where your key documents are, and who handles children, medication and pets.
Full guide →04 · If an alert sounds
For an air-raid siren, a chemical release or a nuclear detonation, the first official instruction is the same: get inside a solid building.
What official agencies tell you to do, in their words.
Canada · emergency 911 · how you are warned →
Act immediately: go to the nearest designated shelter, a sturdy building or an underground space 15.
Cabinet Secretariat of Japan · Israel Home Front Command
Full guide →When told to shelter in place for a chemical release, go indoors, close and lock windows and doors, turn off fans, air conditioning and the furnace, and seal a room on the highest floor possible with few or no windows 1.
U.S. Centers for Disease Control and Prevention · Ready.gov · U.S. Environmental Protection Agency
Full guide →Get inside, stay inside, stay tuned 12.
Ready.gov · Federal Emergency Management Agency · Centers for Disease Control and Prevention
Full guide →If it is nuclear · get inside, stay inside, stay tuned
The alert sounds. Go inside the nearest solid building.
About the time before fallout arrives. Basement, or the centre of the building.
Stay in the most protective place unless officials say otherwise.
Stay tuned. Leave only on an all-clear or an evacuation order.
For a nuclear detonation, from Ready.gov (FEMA) and the CDC. Read the guide
Where · minute 0 to 10
Get inside within 10 minutes.
Get inside, stay inside, stay tuned 12. After a detonation you will have 10 minutes or more to reach adequate shelter before fallout arrives 1. Go to a basement or the middle of a large brick or concrete building, away from windows and outer walls 12. Stay there at least 24 hours unless officials say otherwise or the building is on fire or unsafe 13.
Why · hours to weeks
The 7-10 rule.
Fallout from a nuclear detonation weakens fast. By the "7-10 rule", every sevenfold increase in time after the explosion cuts the dose rate tenfold: about one-tenth of the 1-hour level at 7 hours, one-hundredth at 49 hours (about 2 days) and one-thousandth at about 2 weeks 1. U.S. and Canadian agencies say to get inside and stay sheltered for at least 24 hours 345.
05 · Good to know
A standard shipping container collapses under the weight of soil. A module meant for burial has to be reinforced, coated and documented. Installation and permits stay with a local professional. This is information, Phaenyx does not sell one today.
Canada · where to shelter →
Protection a room at home cannot give, and filtered ventilation for long stays. Know the official standards before you compare anything.
Information onlyRead the guide →One bag instead of thirty purchases, one expiry date to track, built on your country's official list. You can assemble the same from the list yourself.
Information onlyRead the guide →06 · Our sources
Every recommendation on Phaenyx links to the official page that publishes it, with the date we checked it.
All 62 countries, each with its official sources