Flash warnings of the warning levels ORANGE, RED and VIOLET are issued if the occurrence of a severe weather event is certain. This is generally 6 to 12 hours before the occurrence of such an event. Depending on the type of severe weather or weather conditions weather watches and flash warnings may be issued more shortly. Weather watches (YELLOW) are issued up to 48 hours in advance as the occurrence of the event may not be certain or there may be greater changes in time or in the intensity and in the moving direction of the forthcoming severe weather. Our Severe Weather Centre team of meteorologists strives to warn of imminent severe weather as early and reliably as possible.
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