Harvey rainfall exceeds $11.9bn storm Allison

Tropical Storm Harvey has already caused more rainfall than
Tropical Storm Allison, which flooded Houston in 2001, according to
data from the Weather Prediction Center and Aon Benfield's
Impact Forecasting report.
Allison cost around $11.9bn in economic damage, $5bn of which
was insured.
Impact Forecasting said more damage is expected in the coming
days as rain continues to fall on saturated ground in Texas and
Louisiana. The report added that parts of Louisiana are now
threatened by floods.
Har