Common and unique alert levels

Yellow awareness level

Be aware (low risk / potential danger)

The yellow awareness level covers the following situations:

• A “yellow vigilance” phase indicating a potential danger in terms of meteorological risks such as wind, rain, snow or freezing precipitation, thunderstorms, heat or cold weather;

or

• A “yellow vigilance” phase indicating a potential danger in terms of flood risk, i.e. a possible risk of rising water levels.

Orange awareness level

Be careful (medium risk / danger)

The orange awareness level covers the following situations:

•  An “orange vigilance” phase indicating a danger in terms of meteorological risks such as wind, rain, snow or freezing precipitation, thunderstorms, heat or cold weather;

or

• An “orange vigilance” phase indicating a danger in terms of flood risk. Risk of minor rises in water levels that could lead to local flooding and damage. Particular caution is required for seasonal and/or exposed activities.

Red awareness level

Utmost vigilance (high risk / significant danger)

The red awareness level covers the following situations:

• A “red vigilance” phase indicating a significant danger in terms of meteorological risks such as wind, rain, snow or freezing precipitation, thunderstorms, heat or cold weather;

or

•  A “red vigilance” phase indicating a significant danger in terms of flood risk. Risk of major rises in water levels, causing overflows likely to have a significant impact on people and property, even in areas that are rarely flooded.

Imminent danger (violet alert)

Imminent danger / Immediate action

The violet alert refers to an “imminent danger” requiring immediate action from the population. This alert level could be used by MeteoLux in the event of a meteorological phenomenon of extreme intensity with imminent impact (e.g. tornado).