The warning, in effect from Monday afternoon until late Tuesday evening, covers most of Denmark except the island of Bornholm, according to DMI. The agency forecasts locally more than a month's rainfall, between 40 and 80 mm over two days, with some areas in eastern Jutland, Funen, Lolland and Falster possibly receiving up to 120 mm. Showers may release up to 25 mm in a few hours, and locally 15-30 mm in less than 30 minutes, with a risk of thunderstorms. DMI defines a cloudburst as 15 mm or more within 30 minutes; on Monday evening, Bjørup and the island of Falster recorded over 34 mm in half an hour.
DMI warns of increased risk of aquaplaning, water in cellars, flooded low-lying areas, and rapid rises in river and lake levels. The National Operational Staff in Copenhagen has been activated, Banedanmark warns of train delays, and police caution about slippery roads. Copenhagen Airport Kastrup does not expect major impact on air traffic. Police have reminded Danes to help foreign tourists who may not receive weather information. Insurance company Tryg sent SMS alerts to 150,000 homeowners with advice on preventing damage.
Take care of yourselves and each other! This is the first time DMI has warned about 'very dangerous weather' in relation to rain.
Danish Minister for Emergency Preparedness Torsten Schack wrote on X: 'Take care of yourselves and each other! This is the first time DMI has warned about very dangerous weather in relation to rain.' The rain is expected to move into Sweden, with heaviest downpours over southern highlands possibly accompanied by thunderstorms, but no severe impacts or warnings have been issued there yet.