Thunderstorms and strong winds buffeted Moscow and its surrounding areas, killing 11 people and injuring dozens, Russian officials said.

The city's health department said about 50 others, including children, were injured on Monday.

Yulia Ivanova, a spokeswoman for Moscow's branch of the Investigative Committee, had earlier reported six deaths, including five people killed on Monday by falling trees and one person who died after being hit by bus stop debris torn off by high winds.

Russian media say scores of people have also been injured around Moscow.

Moscow Mayor Sergei Sobyanin said the storm has destroyed hundreds of trees in the Russian capital. The winds also disrupted the train service and delayed dozens of flights at Moscow's airports.

A top emergency official added that 60,000 people in Russia's Stavropol region are being evacuated because of the threat of flooding.