MET.OR.120 Notification of discrepancies to
the world area forecast centres (WAFCs)
Regulation (EU) 2021/1338
The meteorological services provider using WAFS SIGWX forecasts shall notify the WAFC concerned immediately if significant discrepancies are detected or reported in respect of WAFS SIGWX forecasts concerning:
(a) icing, turbulence, cumulonimbus clouds that are obscured, frequent, embedded, or occurring at a squall line, and sandstorms or dust storms;
(b) volcanic eruptions or a release of radioactive materials into the atmosphere of significance to aircraft operations.
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