Atmospheric dynamics

It caused due to cold air masses moving across warm water surfaces

The cold spell of the last week continues today.

Code Yellow has been declared across the country due to expected low temperatures. The lows will be about -9 C, and in some places will plummet to -12 C, the national weather service reports.

Christmas weather remains warm for the season, will alternating clouds and sunny spells.

The clouds will be broken - mostly medium and high. In the second half of the day clouds will be getting denser starting from the west and low cloudiness will form.

Winds will be weak to moderate, oriented from the south and southwest.

It will be windy today across Bulgaria today.

The wind will be moderate, in the Danubian Plain and the Upper Thracian Plain - a strong wind from the west-southwest, becoming west-northwest in the afternoon. The cloudiness will be variable but no precipitation expected.

It will be sunny today, the National Institute of Meteorology and Hydrology (NIMH) reported. There will be light northwest wind; in eastern Bulgaria it will be moderate, blowing from the north.
Maximum temperatures between 2C and 7C, in Sofia - about 3C. Atmospheric pressure will be higher than the monthly average and will remain constant throughout the day.

A man defies the chill and sits on a bench overlooking Faliro Bay on Athens' southern coast on Saturday. A cold weather front dubbed Zenobia after the 3rd century queen of Palmyra in Syria pushed temperatures down across Greece over the weekend and brought powerful storms, gale-force winds and snow to many parts of the country.

Today, the wind will start blowing from the west-northwest, it will be moderate and strong and will bring cold air. Considerable cloudiness, with rain in many areas is expected.

Today, it will remain foggy in the lowlands and along the Danube. Before noon, after a temporary decrease mainly over mountainous areas, clouds will increase again from the west. Light wind will blow from the east-southeast.

It will be mostly cloudy today, foggy in the plains, with light rain in some places in the south and west. Clouds will temporarily break in the northeast areas, at the end of the day in the southwestern, as well. A moderate wind will start blowing from the southeast. The maximum temperatures will be mostly between 15C and 20C.

Today, the weather will be dynamic. In the eastern part of the country, temperatures will be significantly higher than usual.