FAA Questions/Private Pilot/Question #230
weather servicesFAA-published question bank (Private Pilot, 2008)

What information is contained in a CONVECTIVE SIGMET?

A

Tornadoes, embedded thunderstorms, and hail 3/4 inch or greater in diameter.✓ Correct Answer

B

Severe icing, severe turbulence, or widespread dust storms lowering visibility to less than 3 miles.

C

Surface winds greater than 40 knots or thunderstorms equal to or greater than video integrator processor (VIP) level 4.

Explanation

AIM 7-1-6 lists the criteria for a Convective SIGMET: severe thunderstorms (surface winds of 50 knots or more, hail of 3/4 inch or more, or tornadoes), embedded thunderstorms, lines of thunderstorms, and areas of strong thunderstorms covering a large area. Severe icing, severe turbulence and dust storms are non-convective SIGMET items, and the wind threshold is 50, not 40, knots.

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Related weather services questions

When speaking to a flight service weather briefer, you should state(Refer to FAA-CT-8080-2H, Figure 17.) What wind is forecast for STL at 12,000 feet?You plan to phone a weather briefing facility for preflight weather information. You shouldWhich in-flight advisory would contain information on severe icing not associated with thunderstorms...SIGMETs are issued as a warning of weather conditions hazardous to which aircraft?

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