CFC Meteorological Briefing & Interpretation 3

Question 1

Which type of weather advisory covers severe icing NOT associated with thunderstorms for aircraft en route?

Accepted Answer

AIRMET Zulu

Answer

AIRMET Zulu covers moderate icing and freezing level information for general aviation aircraft.

Question 2

A Convective SIGMET is automatically issued when a line of thunderstorms is at least how long and how wide?

Accepted Answer

60 NM long affecting an area at least 25 miles wide

Answer

A Convective SIGMET is issued for a line of thunderstorms at least 60 NM long and affecting an area at least 25 miles wide.

Question 3

A PIREP (UA) uses 'TB MDT' in the turbulence field. What does MDT indicate?

Accepted Answer

Moderate turbulence

Answer

MDT is the standard PIREP abbreviation for moderate turbulence intensity.

Question 4

AIRMET Sierra (S) is primarily issued to warn of which condition?

Accepted Answer

IFR conditions and/or extensive mountain obscuration

Answer

AIRMET Sierra warns of IFR conditions (ceilings below 1,000 ft, visibility below 3 SM) and mountain obscuration.

Question 5

How often are Convective SIGMETs issued in the contiguous US when convective activity warrants?

Accepted Answer

Every hour at H+55 minutes, with special bulletins as needed

Answer

Convective SIGMETs are issued at H+55 for each contiguous US area, with unscheduled special bulletins for rapidly developing situations.

(CFC) Certified Flight Communicator Practice Test