In the event of a natural or anthropogenic disaster that interferes with an organization's ability to meet a proposal submission deadline, NSF has developed the following guidelines for use by impacted organizations. These guidelines will take the place of the previous NSF practice of posting notices to the NSF website regarding each specific event.

https://www.fastlane.nsf.gov/fastlane.jsp;jsessionid=1049eaea5d81fffffffff66c4a9b8451dfc:Dqk3?t=0&idx=0