Other Meteors

Hydrometeors other than clouds

(Section 3.1.1)

Table 15. Classification of hydrometeors other than clouds

Designation of meteor	Symbol	Designation of meteor	Symbol
(a) Suspended particles		(c) Particles raised by the wind
Fog	and	Drifting and blowing snow
Fog		Drifting snow
Mist		Blowing snow
Ice fog		Spray
		Snow devil/ Steam devil	nse
(b) Falling particles (precipitation)		(d) Deposits of particles
Rain		Deposit of fog droplets
Supercooled rain		Dew
Drizzle		Dew proper
Supercooled drizzle		Advection dew
Snow		White dew
Snow grains		Hoar frost
Snow pellets		Hoar frost proper
Diamond dust		Advection hoar frost
Hail		Rime
Small hail		Soft rime
Ice pellets		Hard rime
(e) Spout		Clear ice
Tornado	nse*	Glaze
Land spout	nse*
Cold air funnel	nse*
Waterspout	nse*

*nse = no symbol established

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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.

Hydrometeors other than clouds

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