A:
Aviation Weather Center - National source for aviation weather information. This site provides warnings of hazardous condition for operational aviation forecasts and analyses of relevant atmospheric variables. [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA)]

C:
CDC Winter Weather | A Prevention Guide to Promote Your Personal Health and Safety - Prevention Guide to Promote Your Personal Health and Safety during extremely cold temperatures [Department of Health and Human Services (HHS), Centers for Disease Control and Prevention (CDC)]

F:
FEMA: Thunderstorms and Lightning - Facts about thunderstorms and lighting including ways to protect yourself during these types of disasters [Department of Homeland Security, Federal Emergency Management Agency (FEMA)]

Floods Monitor - NOAAWatch - NOAAWatch monitors floods and presents flood emergency alerts [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA)]

N:
NWS Hurricane Awareness - Guides, Brochures, Assessments, Warnings and Forecast from the National Weather Service to bring awareness about hurricane disasters [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA)]

NWS Lightning Safety - The goal of this Website is to safeguard U.S. residents from lightning. [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA)]

S:
StormReady! - StormReady helps arm America's communities with the communication and safety skills needed to save lives and property–before and during the event. [Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Weather Service]