Bulgaria's National Institute of Meteorology and Hydrology (NIMH) has warned of heavy rain and issued a level 2 orange code for Burgas.

A red code is in force for Varna, Dobrich, Smolyan, Kardzhali and Haskovo.

Another 18 provinces are also under an orange code: Montana, Vratsa, Pleven, Sofia region, Blagoevgrad, Pazardzhik, Plovdiv, Lovech, Veliko Tarnovo, Ruse, Razgrad, Gabrovo, Stara Zagora, Sliven, Yambol, Targovishte, Shumen and Silistra. Four provinces are under a yellow code: Vidin, Kyustendil, Pernik and Sofia city.

The forecast says rain will fall everywhere, with snow in the mountains. Amounts will grow and be heavy.

A moderate wind will blow from the east-northeast. In eastern Bulgaria it will strengthen in the second half of the day.

Highs in most places will be between 6C and 11C. In the southeast and along the coast, temperatures will reach 14-16C. In Sofia they will be around 8C.