Traditional carnival parades have been called off in a number of west German cities and towns because of warnings of storms on Monday.
Duesseldorf, Muenster, Essen and Mainz are among the major centres to have cancelled events on Rose Monday.
However, Cologne is going ahead with its parade, with some restrictions.
The city stepped up policing for its first major public event since New Year, when many women were victims of sexual assaults and mugging.
More than one million people were expected to attend events in Cologne for carnival week, which began last Thursday.
Ahead of the carnival, organizers printed leaflets in Arabic and other languages explaining the event and stressing there would be zero tolerance by police over sexual assaults, the Deutsche Welle website reported.
Many of the assaults on New Year’s Eve were blamed on migrants, especially from North Africa.
Other cities reported to have called off their Rose Monday parades because of the weather include Krefeld and Hagen.
German weather forecasters said a low-pressure system was expected to bring gales on Monday, with winds gusting at up to 100 km/h (10 mph) in places. Thunderstorms and heavy showers could also be expected.
Duesseldorf’s carnival committee leader Michael Laumen told ARD TV that the gale warnings made it “simply too dangerous” to go ahead with the parade.