About 70 families have had to spend the night in temporary shelter after a tornado in London destroyed homes.
Six people were injured, only one of them seriously, but up to 150 homes were damaged.
The tornado only lasted about a minute, but some of houses that it damaged will have to be torn down because it's not safe for them to stay standing.
The tornado swept into London around 11am on Thursday, and it's thought it will cost millions to clean up after.
Tornadoes are swirling columns of wind which form when a warm wind meets a cold one, and are very rare in Britain.
The roof of one house was completely ripped off, and a number of trees were uprooted.
Pupils at Manor School, which was in the affected area, have been told to stay at home today.
People have been told to stay out of the area until the emergency services have made sure it's safe.
The council has now begun the job of clearing up the mess left behind.