Fig. 19: Monthly Rainfall in the Southwest (area averaged) 7.0 DUST HAZE The first major dust haze spell of the year occurred from January 1st 21st (Table 2). – Surface horizontal visibility was reduced to less than 1000m in most parts of the country during the period. Thick dust haze was experienced between 2nd 7th February in the northeastern part of – the country. It became widespread during February 11 18th when places such as – Maiduguri, Nguru and Ikeja reported horizontal visibilities of 300m, 600m, and 800m respectively. The extreme northern part of the country was again engulfed in another dust haze spell between 25 29th which reduced horizontal visibility to between 700m (Sokoto) – and 300m (Maiduguri). Generally, hazy weather conditions prevailed during the second and fourth weeks of March. But thick dust haze was experienced between 2nd and 8th of March over Maiduguri, Gombe, Yola, Kano and Sokoto. Kano had the poorest horizontal visibility of 500m. Another dust haze spell was experienced between 16th 21st when the horizontal visibility was – reduced to 200 800m over Maiduguri, Yola, Gombe and the central states. – Dry weather conditions returned after the rainy season (April and October), bringing dust particles into the country. One dust spell was recorded from November 23rd 25th which – reduced horizontal visibility to 800m in the extreme north. The second dust haze spell of the month was recorded from December 14th 19th which reduced horizontal visibility to – between 800 1500m in the extreme north and central region of the country. –
Fig. 19: Monthly Rainfall in the Southwest (area averaged) 7.0 DUST HAZE The first major dust haze spell of the year occurred from January 1st – 21st (Table 2). Surface horizontal visibility was reduced to less than 1000m in most parts of the country during the period. Thick dust haze was experienced between 2nd – 7th February in the northeastern part of the country. It became widespread during February 11 – 18th when places such as Maiduguri, Nguru and Ikeja reported horizontal visibilities of 300m, 600m, and 800m respectively. The extreme northern part of the country was again engulfed in another dust haze spell between 25 – 29th which reduced horizontal visibility to between 700m (Sokoto) and 300m (Maiduguri). Generally, hazy weather conditions prevailed during the second and fourth weeks of March. But thick dust haze was experienced between 2nd and 8th of March over Maiduguri, Gombe, Yola, Kano and Sokoto. Kano had the poorest horizontal visibility of 500m. Another dust haze spell was experienced between 16th – 21st when the horizontal visibility was reduced to 200 – 800m over Maiduguri, Yola, Gombe and the central states. Dry weather conditions returned after the rainy season (April and October), bringing dust particles into the country. One dust spell was recorded from November 23rd – 25th which reduced horizontal visibility to 800m in the extreme north. The second dust haze spell of the month was recorded from December 14th – 19th which reduced horizontal visibility to between 800 – 1500m in the extreme north and central region of the country.