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AMC2 MET.TR.200(a)(12) Meteorological reports and other information

ED Decision 2022/004/R

SUPPLEMENTARY INFORMATION — AUTOMATIC OBSERVING SYSTEM

In local routine report, local special report, METAR and SPECI, when reported by an automatic observing system, the following recent weather phenomena should be reported, up to a maximum of three groups, in the supplementary information:

(a)     FZDZ, FZRA and FZUP;

(b)     moderate or heavy DZ, RA and SN;

(c)      thunderstorm; and

(d)     moderate or heavy unknown precipitation (UP).