The National Meteorological Service of Greece has issued an emergency bulletin warning of heavy rainfall and thunderstorms starting today and continuing into the weekend. Areas such as Corfu, Epirus, and the western Peloponnese will be affected first, with the weather worsening in various parts of the country over the next few days. Strong winds are also expected, particularly in western and southern Greece. Improved weather is anticipated on Sunday, but a new deterioration is expected from Monday.