Estimates for U.S. onshore and offshore insured losses from Hurricane Ike have risen to $13-21 billion, of which $10-15 billion is estimated for wind and storm surge in Texas and Louisiana.

The new estimate, made by Risk Management Solutions (RMS), includes $2-3 billion from inland wind and flood losses and $1-3 billion in offshore losses, but does not include losses covered by the National Flood Insurance Program.

RMS published a preliminary loss estimate of $7-12 billion on September 17 shortly after Hurricane Ike made landfall over Galveston Island, Texas. The revised loss estimate is based on a new post-event modeling methodology that captures the uncertainty in Ike's wind and storm surge footprint, due to the lack of observations, using an ensemble of 300 varying simulations of this footprint.

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