Callie is 4 years old and completely potty trained to go outside and I noticed this was a problem during Hurricane Irene when I had to run her out to go potty in very very high winds so what I did was order a pup head
Amazon.com: Pup-Head Portable Dog Potty - Regular... I haven't gotten it in yet but I am hoping she will use it for bad weather days and during her recovery from surgery.