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What Is a SPECI and When Is It Issued?

Pilot Institute

Expect poor visibility, increased turbulence, and slippery runway surfaces. You should monitor the temperature closely during winter or in colder regions since icing can impact both lift and control. 011955Z : The date and time of issuance (first day of the month at 19:55 UTC). And if you see “TSRA,” that’s a red flag.