REPAIR BILLS from last Thursday's tornado in Birmingham will reach between £20M and £40M, according to the Association of British Insurers.
Over 1,000 properties have been surveyed and 200 properties deemed structurally unstable.
Between 20 and 50 properties will have to be demolished.
Winds of more than 200km/h hit the south of the city, blowing roofs off houses, uprooting trees and hurling cars into the air.
Over 900 Birmingham city council staff were still surveying buildings and clearing roads as went to press on Tuesday.
Eleven roads have been closed because of fears that buildings will collapse on traffic and 150 people have been re-housed.
Met Office weather forecaster Karen Shorey said that predicting when and where tornadoes could strike was impossible.
'You can have an idea of when thunderstorm conditions are ripe but you can't determine exactly whether it will fuel a tornado, ' she said.
She added that climate change had not infl uenced the tornado since the UK experiences about 33 every year, mostly in the Midlands, Bristol Channel and East Anglia.
Peterborough and Lincoln were also hit by tornadoes last Thursday when cool air masses met warmer humid air causing high winds and updrafts.