Thick desert sand haze reducing visibility down to 2500 metres after an unseasonably warm night due to Libecchio gales and very strong southwesterly jet stream just before the entrance of a cold airmass. The first thumbnail shows that Mdina was barely visible from the Addolorata cemetery when usually it could be clearly seen. The second thumbnail shows a Luqa Airport reading proving the thick haze at that moment. The third thumbnail shows an upper-level low pressure diving well southwards towards the West Mediterranean and into Northwest Africa dragging those southwesterly winds from the Sahara Desert towards the Maltese Islands which is shown into the fourth thumbnail. Following that night as the cold air moved eastwards, the temperature plummeted to 12C on the following night.