There are three types of in-flight aviation weather advisories with which all pilots should be familiar: the SIGMET, the Convective SIGMET, and the AIRMET. When you hear ATC say, "Attention all aircraft, hazardous weather information ... " followed by the phrase "Convective SIGMET," you can expect which aerial possibilities?


Surface winds greater than or equal to 50 knots


Hail at the surface greater than or equal to 3/4 inches in diameter


Embedded thunderstorms


A line of thunderstorms


All of the above and, possibly, more

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