The slightly longer short answer (from REWahoo's link) is:
"Individuals are required to claim their casualty and theft losses as an itemized deduction on Form 1040, Schedule A
(PDF) (or Form 1040NR, Schedule A
, if you are a nonresident alien). For property held by you for personal use, once you have subtracted any salvage value and any insurance or other reimbursement, you must subtract $100 from each casualty or theft event that occurred during the year. Then add up all those amounts and subtract 10% of your adjusted gross income from that total to calculate your allowable casualty and theft losses for the year."
That last part is the kicker for many, I'm sure. If you're retired and near-zero income you might be able to deduct some of it.