What Is a SPECI and When Is It Issued?
Pilot Institute
NOVEMBER 5, 2024
Cloud ceilings below 1,500 feet or cumulonimbus clouds can trigger a SPECI. A sudden wind shift, a 10-knot or greater speed increase, a 45-degree or more direction change, or gusts exceeding limits may also cause a SPECI. Thunderstorms can also bring wind shear and lightning.
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