It means there is a high likelihood of a storm occurring, with high impact consequences.
What is a red weather warning?
It could see wind causing flying debris resulting in danger to life, there can be damage to buildings and homes, with roofs blown off and power lines brought down.
What can the public expect?
The Met Office has told people to expect very dangerous driving conditions with fallen trees on roads, power cuts affecting other services such as mobile phone coverage, and damage to buildings and homes
Roads, bridges and railway lines will be closed, with delays and cancellations to bus, train and ferry services and flights. Large waves and beach material could be thrown onto coastal roads, sea fronts and homes.
First Minister has warned the public that Storm Éowyn represents “a genuine threat to life and property” in Northern Ireland.
What should people do to stay safe?
Don’t risk injury to others or damage to your property. If you can do so safely, check for loose items outside your home and secure them.
Items include bins, garden furniture, trampolines, tents, sheds and fences.
Avoid travelling by road during these potentially dangerous conditions.
Being outside in high winds makes you vulnerable to injury. Stay indoors if you can.
People cope better with power cuts when they have prepared for them in advance.
Consider gathering torches and batteries, a mobile phone power pack and other essential items.
If you live or work on the coast, beware of large waves. Even from the shore large breaking waves can sweep you off your feet and out to sea.
In an emergency, call 999 and ask for the Coastguard.
Stay up to date with the weather forecast for your area and follow advice from emergency services and local authorities.
Be prepared for weather warnings to change quickly. When a weather warning is issued, stay up to date with the weather in your area.
Insurance company advice
People have raised questions about whether insurance cover is valid for those who drive in status red conditions.
AXA insurance said its motor policy would act as normal.
AXA advised people to keep vehicles in the garage if you have one, or in a clear area not under a tree to avoid damage.
The company added: “Please be careful at all times.
“Only leave your home if it is safe to do so as roof tiles may have come loose on your property, there may also be debris from fallen trees.
“Avoid all unnecessary journeys. If you must travel by car, please slow down and watch out for high-sided vehicles and vulnerable pedestrians.
“If the road ahead is flooded, do not attempt to drive through it. Flooded roads that appear shallow could be deeper than you think.
“Please take photographs of any damaged goods and keep a list of these items.
“If your house is flooded, please move as many personal items and furniture upstairs if you live in a two-storey building.”