Introduction

Associated cloud forms table

(Section 1.2.1.3)

Table 1.Cloud forms (genera) associated with each falling hydrometeor (precipitation) type.

Falling hydrometeor	Altostratus	Nimbostratus	Stratocumulus	Stratus	Cumulus	Cumulonimbus	No cloud
Rain	Possible	Usual	Possible		Possible showers	Usual showers
Drizzle				Possible
Snow	Possible	Possible	Possible	Possible	Possible showers	Possible showers
Snow grains				Possible
Snow pellets			Possible		Possible showers	Possible showers
Diamond dust							Possible
Hail (large and small)						Possible showers
Ice pellets	Possible	Possible

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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.

Associated cloud forms table

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