Open Cell Convection And Closed Cell Convection - Weather Events

by KNMI

Parameter Description - Open Cells Description - Closed Cells

Precipitation

Light showers with rain and occasionally snow or (winter)hail, occasionally also some thunder

Generally no significant precipitation. If any precipitation occurs it will be drizzle or granular snow.

Temperature

No significant change, however small fluctuations between in- and outside the showers can occur.

No significant change.

Wind (incl. gusts)

Slight to moderate surface winds.

Slight to moderate surface winds.

Other relevant information

Aviation: Icing hazard due to supercooled cloud droplets (especially in winter season) and turbulence in/near convective clouds at the cell borders.

Aviation: Icing hazard due to super cooled cloud droplets (especially in winter season), and also turbulence can occur at the top of cloud deck (due to windshear).

	17 November 2005/09.00 UTC - Meteosat 8 IR image; Surface Observations (Present Weather) and Precipitation Radar superimposed

Menu Of Open Cell Convection And Closed Cell Convection

Typical Appearance In Vertical Cross Sections

References

Parameter	Description - Open Cells	Description - Closed Cells
Precipitation	Light showers with rain and occasionally snow or (winter)hail, occasionally also some thunder	Generally no significant precipitation. If any precipitation occurs it will be drizzle or granular snow.
Temperature	No significant change, however small fluctuations between in- and outside the showers can occur.	No significant change.
Wind (incl. gusts)	Slight to moderate surface winds.	Slight to moderate surface winds.
Other relevant information	Aviation: Icing hazard due to supercooled cloud droplets (especially in winter season) and turbulence in/near convective clouds at the cell borders.	Aviation: Icing hazard due to super cooled cloud droplets (especially in winter season), and also turbulence can occur at the top of cloud deck (due to windshear).