National Weather Service NWS, Eastern Region Headquarters, A Guide To Developing A Severe Weather Emergency Plan For Schools (For Eastern Region Bohemia, NY), Appendix C 1: General Severe Weather Safety/ Tornadoes and Severe (Damaging) Winds, Baltimore-Washington Forecast Office, USA 2015. http://www.erh.noaa.gov/lwx/swep/swep.pdf, (ND Emr/ Tornadoes and Severe Winds - Amer) {943}