Moist Southwesterly winds originating and blowing from the Atlantic Ocean are established and have moved Northwards relative to it’s position of 01/08/2016, within Niger and Chad republics; for today, they have relocated to North of Lat. 18.7oN in the Western sector, while also moving it's position to North of Lat. 18.0oN 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 moved to North of Bilma (18.7oN) in Niger republic whilst also moving it’s position to North of Faya (18.0oN) in Chad republic, both to the Western and Eastern sector respectively (These are the farthest and Northernmost synoptic observing stations in Niger and Chad respectively). A westerly trough located over Europe extends down and induced a deep surface low pressure centre over the Arabian peninsula, that extends a deep trough of low pressure across East Africa into the West African sub-region including Nigeria. This system is responsible for the current weather situation in the Country. The South Atlantic anticyclone (also known as St. Helena high) in the Southern Hemisphere remained established and continued to extend it’s ridge of high pressure into West Africa. As the ITD continue to maintain it’s Northward position, more moisture influx into all parts of Nigeria, Niger and Chad republics are sustained.
The 1500GMT satellite imagery shows convective cells are developing: in the Northwest state of Sokoto, in the Jos/Bauchi high grounds; convective cells are also observed in the Mambilla plateau down to areas in the Southeast and across the border into Cameroon republic and in parts of the South-South states.
The 0900GMT collective of today, gave rainfalls in the following stations: Katsina (35.0mm), Nguru (35.0mm), Gusau (10.4mm), Sokoto (42.4mm), Dutse (34.8mm), Zaria (1.7mm), Bauchi (68.7mm), Yola (25.2mm), Lafia (22.3mm), Abuja (32.2mm), Ijebu Ode (6.6mm), Ibadan (2.4mm), Akure (4.6mm), Asaba (TR) and Enugu (TR) within the past 24 hours.
Sunny, partly cloudy to cloudy conditions will affect parts of the Northern states while thunderstorms are expected to affect areas in the Northeast in the afternoon/evening. Cloudy conditions will be experienced in the Central states with chances of rains in the morning and showers/thunderstorms affecting places especially in the high grounds during the evening/night period. The Southern parts will be mainly cloudy with showers likely to developed from mid-morning/afternoon; however thunderstorms are expected to affect places in the Southwest and areas in the Coastal states during the afternoon/evening periods.