Dust squalls over the Central Sahel

Dust squalls over central Sahel

5 July 2010 00:00 UTC

Dust squalls over the Central Sahel
Dust squalls over the Central Sahel

On 5 July 2010, Meteosat-9 observed a well organised mesoscale convective system over the central Sahel, particularly noticeable is the associated huge dust cloud.

Last Updated

13 June 2022

Published on

05 July 2010

By Emmanuel Kploguede (EAMAC – Niamey)

The dust undercuts the leading edge of the mesoscale convective system (MCS) as a dust-wall (see lower image) associated with the passage of the gust front at Niamey (marked by a yellow dot).

Note that the leading dust wall over Niamey is not seen on the satellite image because of the higher-level clouds overlying the dust layer. Looking at the hourly animation (29 June 21:00 UTC–8 July 07:00 UTC), another big dust squall can be seen on 2–3 July over Niger and Mali.

Dust squalls over the Central Sahel
Figure 1: Meteosat-9 Dust RGB, 5 July 2010, 14:15 UTC, mesoscale convective system (MCS) over Central Sahel and associated dust cloud. Animation (hourly) (29 June 21:00 UTC–8 July 07:00 UTC)
Dust squalls over the Central Sahel
Figure 2: A picture of the dust wall associated to the MCS during its passage over Niamey (NIGER), 5 July 2010, 15:15 LMT corresponding to 14:15 UTC. Copyright: Emmanuel Kploguede)