The National Centre of Meteorology (NCM) said on 12 December that the UAE will be affected by a surface low-pressure system from Friday 13 to Sarurday 19 December, bringing periods of atmospheric instability.
In a statement, the NCM said the instability will occur in waves due to the extension of a surface low-pressure system from the Red Sea, accompanied by humid southeasterly winds. This will coincide with the extension of an upper-level low-pressure system that deepens and weakens at times, along with a northwesterly air current.
From Saturday 13 to Monday 15 December, weather conditions are expected to be partly cloudy to cloudy at times, with a chance of light to moderate rainfall. Rain may become heavy at times over some areas, particularly over the islands, as well as some coastal and northern regions.
From Tuesday 16 to Friday 19 December, the upper-level low-pressure system is expected to deepen further, accompanied by a cold air mass. Cloud cover will increase over scattered areas, including convective clouds, leading to rainfall of varying intensity in intermittent waves. Rainfall may at times be accompanied by lightning and thunder, with a chance of hail over some areas.
The NCM said winds will be southeasterly to northeasterly, gradually moving to northwesterly, moderate to fresh and becoming strong at times, especially with convective clouds. Blowing dust and sand may lead to reduced horizontal visibility.
Sea conditions are expected to be moderate, becoming rough at times with cloud activity, in both the Arabian Gulf and the Sea of Oman.