As you've probably heard already, 2013 is a year of bad weather, here in the CZ. Right now the capital is flooded as well as many cities, there have already been several deaths and incidents due to the heavy rainfall and flooding. Many bridges are closed, especially in the West and North of the Country.
For information in English go to the Expats website here. The have links to the best resources available right now in English and Czech.
Nothing to be done except to keep safe, drink bottled water and if possible, help those in need.