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**Convective SIGMET — "Significant Meteorological" advisory.** - Alerts for **severe thunderstorms**, lines of thunderstorms, embedded thunderstorms, hail ≥ 3/4 inch, tornadoes. - Issued by the **Aviation Weather Center** for the CONUS. - Valid for **2 hours** typically. - **If a convective SIGMET is active in your area, do not fly.** Gust fronts, lightning, and heavy rain will destroy a sUAS.

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