What is a Met Office red weather warning and what can we expect from Storm Eunice?

We've had Storm Dudley - and now Storm Eunice is here. The Met Office has issued two red weather warnings for wind - but what does that mean?

We have a traffic lights system when it comes to weather warnings - the lowest rating is a yellow, and that means to be aware.

For Storm Eunice, we've already had an amber warning - meaning to be prepared - in force for the whole of Wales and vast swathes of England.

But it gets even worse - because down towards the far south coast, we've also got high spring tides and a possible storm surge coming through the Bristol Channel.

It has prompted the Met Office to issue two rare 'red' warnings, for very strong and damaging winds of up to 100mph, across south Wales and the south-west of England, and across the east of England, including London.

What is a 'red' weather warning?

A red warning is the Met Office's most severe weather warning, meaning dangerous weather is expected and you should take action to keep yourself and others safe.

It is very likely that there will be a risk to life, with substantial disruption to travel, energy supplies and possibly widespread damage to property and infrastructure.

You should avoid travelling, where possible, and follow the advice of the emergency services and local authorities.

The last time we had a red warning for winds in Wales was on February 12, 2014 - that's before we even started naming storms.

This is pretty rare. And coupled with those high spring tides, it's going to make for some pretty treacherous conditions.

So what can we expect?

• Flying debris, resulting in danger to life

• Damage to buildings and homes - roofs blown off, power lines brought down

• Uprooted trees likely

• Roads, bridges and railway lines closed

• Delays and cancellations to buses, trains, ferry services and flights

• Power cuts

• Large waves with beach material being thrown onto coastal roads and buildings

• Flooding of some coastal properties

The Met Office only names storms when they deem they will make an impact - and Eunice certainly seems set to do that.