Sand winds, also known as Harmattan winds, occur in the Sahara desert and surrounding regions in West Africa.
These winds are dry, dusty and carry sand particles that can reduce visibility and cause respiratory problems.
The Harmattan winds usually blow between November and March, and are most intense in December and January.
During this period, the temperature drops significantly, making the weather cool and dry.
The winds also affect agriculture, as they can damage crops and reduce yields.
The Harmattan winds have cultural significance in West Africa, as they are associated with the start of the dry season and the beginning of the year.
The winds can also carry diseases, such as meningitis, which can spread rapidly during the dry season.
In some parts of West Africa, people use the sand from the Harmattan winds to build homes and make pottery.
The winds can also have a positive effect on tourism, as they create unique landscapes and sunsets.
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