PRAGUE, Czech Republic--Authorities say 15 people have died and at least four others are missing in the floods that have ravaged central Europe.

Firefighters said more than 19,000 people have been evacuated from the flooding in the Czech Republic. One raging flood that inundated parts of Prague is now heading north toward Germany.

The dead included eight people in the Czech Republic, four in Germany, two in Austria and one in Slovakia.

Authorities are now concerned about the safety of chemical plants next to the swollen rivers. The plants have been shut down and their chemicals removed.

Hundreds were being evacuated in the German city of Dresden, where the Elbe river was expected to crest later Wednesday.