A red alert has been issued during Storm Arwen - the highest possible weather warning meaning things could get dangerous. But what exactly does this red alert mean and how worried should you be?
As the UK's official weather service, the Met Office is responsible for issuing warnings and the impact extreme conditions could have - such as flying debris or damage to buildings.
The warnings are designed to let locals, businesses, emergency responders and governments know what weather is in store so people can batten down the hatches and prepare.
These warnings are given a colour (yellow, amber or red) depending on a combination of both the impact the weather may have and the likelihood of those impacts occurring.The warnings can be issued up
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