This document discusses the rise of hashtags like #memstorm and #memflood for sharing information during crises in Memphis, Tennessee. It describes how #memstorm started during a storm as a way to easily find localized Twitter updates, and how it grew to be supported by local media and websites. #memflood was later created during a flood, which saw even more widespread adoption. The document encourages readers to get involved with these hashtags to both share and access community information.