Due to the heavy storms this month several cities in TX, and several parishes in LA, have been declared Disaster areas. Because of this, those area have a filing deadline of July 15, 2016. If you have already filed your 2015 tax return, you have the option to amend the return and add the losses for your casualty or add it to next year return. If you have not filed a return, you have the option to add it to this year return or adding it to next year return.
Below are IRS links to give you more information.