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A strong wind and duststorm or sandstorm occurring in northern and central Sudan (World Meteorological Organisation).
The average duration of a haboob is three hours and the average maximum wind velocity is over 15 m/sec (29 kts). The dust or sand forms a dense whirling wall which may be up to 1000 metres high. It is often preceded by isolated dust whirls. Haboobs usually occur after a few days of rising temperature and falling pressure.
The word Haboob is an Arabic word meaning "strong wind".