Supplementary features and accessory clouds

(Section 2.3.5.4)

Virga and praecipitatio may be clearly visible. Pannus clouds may be observed under Altostratus.

Altostratus may show mamma.

The text enclosed in grey-shaded boxes, like this example, comprises Annex I to the Technical Regulations (WMO-No. 49) and has the legal status of standard practices and procedures.

Supplementary features and accessory clouds

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