A band of heavy rain moved east across northern Greece and the former Yugoslav Republic of Macedonia on Monday evening with around half of the average rainfall for the month of March falling in just a few hours. This has led to increasingly saturated and waterlogged ground being reported at Idomeni on Tuesday.
Wednesday and Thursday
Rain will become increasingly persistent and locally heavy with thunder across mainland Greece on Wednesday afternoon. Across northern Greece, this rain will be falling on already saturated ground and is likely to lead to a deterioration in conditions here. Rain is expected to gradually ease through Thursday morning, followed by a mixture of sunshine and showers.
After a more settled day for most of Friday, rain is likely to develop during the evening across southern Greece and spread north overnight. This rain is likely to turn increasingly persistent and heavy during Saturday afternoon into Sunday. There remains some uncertainty in the exact track of this heavy rain, but current forecast models suggest the heaviest rain is likely to affect the regions of Thessaly and Central Macedonia in Greece. This rain is likely to result in localised flash flooding as heavy rain falls in a short space of time.
Unsettled conditions are likely to continue into the beginning of next week. However, cooler northerly winds are expected to develop with temperatures falling. Those sleeping outdoors or in non-winterised shelter may be more prone to developing respiratory illness with research showing negative health effects start at relatively modest low temperatures, especially below 4-8ºC.