Moist Southwesterly winds originating and blowing from the Atlantic Ocean are established and have maintained it’s Northward advance in Niger and Chad republics; for today, they have maintained their position at Lat. 21.0oN in the Western sector and Lat. 20.0oN in the Eastern sector, all outside the country. The South Atlantic anticyclone (also known as St. Helena high pressure cell) located in the Southern Hemisphere remained established and strengthened and  extends a ridge of high pressure into West Africa. As a result, moisture influx into all parts of Nigeria, Niger and Chad republics are sustained.
The satellite imagery of today at 1500GMT shows convective cells developing in Adamawa state, in the Central states especially over Jos/Bauchi high grounds, over Mambilla plateau down  to areas in the Southeast and across the border into Cameroon republic; convective cells were also observed over inland of the Southwest and parts of the Edo/Delta states.
OUTLOOK (21.08.2016)
Sunny, partly cloudy to cloudy conditions will affect most parts of the Northern states while thundery showers are expected to affect areas in the Northwest and Northeast in the afternoon/evening. Cloudy conditions will prevail in the Central states with chances of afternoon showers while thunderstorms are expected to affect places especially the high ground areas during the evening/night period. The Southern parts will be mainly cloudy with rain showers likely to develop  in the afternoon; however, thunder with rain are expected to affect  parts of the  Southwest, Southeast and areas in the Coastal states during the afternoon/evening periods.