Data credits

Flight data: Pro Flight Search, from the airports' own departure boards
Weather reports: NOAA Aviation Weather Center
Weather forecasts: WeatherTomorrow
Air traffic programs: FAA National Airspace System Status
Aircraft positions: adsb.lol, Open Database License
Hazard alerts: GDACS
Weather archive: Iowa Environmental Mesonet
US on-time records: Bureau of Transportation Statistics
Airports: OurAirports
Time zones: timezone-boundary-builder, Open Database License
Airline notices: each notice links to the airline or authority that posted it