Which weather product provides hazardous in-flight weather information and is broadcast over selected VOR outlets?

• A. HIWAS
• B. MIS
• C. CWA
• D. TAF

Answer: (A)

This question is about how pilots receive hazardous weather information during flight. HIWAS, the Hazardous In-Flight Weather Advisory Service, is designed specifically for this purpose. It continuously broadcasts hazardous weather information over selected VORs on VHF frequencies, so pilots can listen for alerts like SIGMETs, AIRMETs, convective SIGMETs, and urgent weather advisories while en route. This makes it the go-to source for in-flight weather hazards via VOR outlets.

The other products serve different roles: MIS isn’t a continuous VOR broadcast of hazardous weather for pilots; a Center Weather Advisory is an advisory issued by centers for flight operations but isn’t the standard VOR HIWAS broadcast; and a Terminal Aerodrome Forecast is a forecast for a specific airport, not a live hazard update broadcast over VORs.