That means if you can prove that earthquake has affected your current status then you might be able to extend or ask for defer action. For example if you are F1 & out of status because of the earthquake ( your parents lost the property or lost the source of income to support your studies here) then you can apply for EAD. If you have been here in U.S. In visitor visa and can't return immediately they might consider for extension of your stay. Or if your petition is pending and need to go to Nepal ASAP they might expedite the process. Etc..