essential
likely
maybe
probably not
Front (prompt)
Convective SIGMET — what is it and when is it issued?
Plain English (default view) — short, conversational, lightly seasoned with science
🔬 Scientific / formula (revealed on click) — markdown + $$…$$ ok
**Significant Meteorological** advisory for aviation: - Severe thunderstorms / lines of thunderstorms / embedded storms - Hail ≥ ¾ inch, tornadoes - Issued by Aviation Weather Center, CONUS - Valid ~2 hours **If active in your area — do not fly.**
💡 Mnemonic / memory aid (shown on hover)
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