The surface weather (synoptic) chart shows that moist Southwesterly winds originating and blowing from the Atlantic Ocean are established and remained quasi-stationary relative to it's position of 11/08/2016, within Niger and Chad republics; for today, they have maintained their position and are located around Lat. 23.8oN in the Western sector and to Lat. 22.0oN in the Eastern sector, all outside the country. The Inter Tropical Discontinuity (ITD) which is the indicator to measure the extent of the moist Southwesterly winds has remained far North of Bilma (18.7oN) in Niger republic whilst sustaining it’s position to North of Faya (18.0oN) in Chad republic, both to the Western and Eastern sector respectively (Both stations are the farthest and Northernmost synoptic observing stations in Niger and Chad republics respectively). The South Atlantic anticyclone (also known as St. Helena high pressure cell) located in the Southern Hemisphere remained established and continued to extend it’s ridge of high pressure into West Africa. As the ITD continue it’s Northward movement, more moisture influx into all parts of Nigeria, Niger and Chad republics are sustained.
The 1500GMT satellite imagery of today, shows convective cells developing over Southern Borno and parts of Adamawa state in the Northeast, over the Mambilla high grounds and extends across the border into Cameroon republic; convective cells also form over parts of the Southeast and Coastal states of the South-South.
Sunny, partly cloudy to cloudy conditions will affect parts of the Northern states while isolated thunderstorms are expected to affect areas in the Northeast in the afternoon/evening. Cloudy conditions will prevail in the Central states with chances of thunderstorms affecting places especially in the high grounds during the evening/night period. The Southern parts will be mainly cloudy with showers likely to develop in the afternoon; however, thunderstorms are expected to affect parts of the Coastal states during the afternoon/evening periods.