Stay away from windows and mirrors. Either crawl under a table or desk, sit or stand against an inside wall away from windows, or stand in an inside doorway. Do not use open flames during the tremor. Do not move seriously injured people unless they are in immediate danger. If you think the building has been damaged, evacuate.
Aftershocks can level severely damaged buildings.
Do not use the telephone except to report an emergency. If a call is necessary dial 911 and report the emergency to the Buffalo County Dispatcher. Be sure to give your name, building and room number and telephone extension. Open doors carefully, watching for objects that may fall. Do not use matches or lighters.