It appears as a tubular, rolling structure moving parallel to the ground, giving the illusion of a massive wave in the sky

Attica and Thessaloniki are both expecting occasional clouds and brief showers through the afternoon, clearing into the evening. Attica will peak around 20°C, while Thessaloniki stays slightly cooler at 19°C.

In Attica, the day will feature mostly clear skies and sunshine. Temperatures will range between 7–17°C, with light southwesterly winds of 3–4 Beaufort in coastal areas.

Attica will be partly cloudy, but will have periods of sunshine. Temperatures will range from 9–18°C, with light winds of 3-4 Beaufort in the surrounding sea areas.