Which is issued when severe icing conditions not associated with thunderstorms are occurring?

Which is issued when severe icing conditions not associated with thunderstorms are occurring?

• A. AIRMET
• B. SIGMET
• C. PIREP
• D. SPECI

Answer: (B)

Severe icing that isn’t tied to thunderstorms is treated as significant weather that can affect flight safety for all aircraft, so it’s issued as a SIGMET. This product warns about non-convective phenomena that could impair aircraft performance and safety, and it covers conditions like severe icing, turbulence, dust or sand storms, and volcanic ash. AIRMETs handle lighter to moderate conditions and are mainly for smaller aircraft or less severe weather, so they wouldn’t be used for severe icing. PIREPs are pilot reports, not issued advisories, and SPECI is a special METAR update for rapid airport weather changes. Convective weather involving thunderstorms has Convective SIGMETs, not the non-convective SIGMET.

Severe icing that isn’t tied to thunderstorms is treated as significant weather that can affect flight safety for all aircraft, so it’s issued as a SIGMET. This product warns about non-convective phenomena that could impair aircraft performance and safety, and it covers conditions like severe icing, turbulence, dust or sand storms, and volcanic ash. AIRMETs handle lighter to moderate conditions and are mainly for smaller aircraft or less severe weather, so they wouldn’t be used for severe icing. PIREPs are pilot reports, not issued advisories, and SPECI is a special METAR update for rapid airport weather changes. Convective weather involving thunderstorms has Convective SIGMETs, not the non-convective SIGMET.