What do yellow, amber and red weather warnings actually mean? 

What do yellow, amber and red weather warnings actually mean? 

A brief guide to the UK's weather warnings system.

Published: January 23, 2025 at 11:26 am

In the UK, the Met Office – the UK's official weather service – issues weather warnings to alert the public and authorities about severe weather conditions. These warnings are categorised into three levels – yellow, amber and red – based on the potential impact and likelihood of these impacts occurring.

The warnings are designed to let people, businesses, emergency responders and governments know what weather is approaching and what the impacts of that weather may be.

Here, we take a quick look at what the different colours mean.

Weather warnings: what do the colours mean?

Yellow warning

A yellow warning is often issued when it is likely that the weather will cause some low-level impacts. A yellow warning could also signify that the weather could bring severe impacts but the certainty of those impacts occurring is low. When a yellow warning is issued, the Met Office advises the public to remain aware and take precautions if necessary. While the impact may be limited, it can still cause travel disruptions, delays and localised issues such as flooding or strong winds. Yellow warnings are the most frequently issued and serve as an early alert for worsening conditions.

Amber warning

An amber warning indicates a higher likelihood of severe weather causing disruption. This level suggests a potential risk to life, as well as damage to property, travel delays, road closures and power outages. The public is advised to be prepared and consider adjusting travel plans or taking protective measures. Emergency services and authorities may be on standby for significant impacts.

Red warning

A red warning is the highest level, meaning dangerous weather conditions are expected and immediate action is required. Widespread disruption, risk to life and major damage to infrastructure are likely. People are advised to stay indoors, avoid travel and follow emergency advice. These warnings are rare but are issued for extreme events such as storms, blizzards or heatwaves.

The Met Office regularly updates weather warnings based on real-time data, ensuring the public and authorities can prepare for potential hazards. Always check official sources for the latest updates.

Main image: weather warning sign/Getty

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