The risk of wildfire ignition and rapid spread today, Wednesday, 22 July 2026, is extreme—not only due to high temperatures but also because of the Foehn phenomenon. According to Meteo, this meteorological effect rapidly dries out vegetation, turning fuel into tinder. Combined with soaring temperatures, it creates ideal conditions for fast-moving, intense fires—making heightened vigilance essential across the country.
How Foehn Winds Form
Westerly winds expected across Greece today will interact with regional topography, triggering the Foehn effect—particularly generating strong, warm, downslope winds known locally as livas.
The Foehn phenomenon occurs when moist air is forced upward over a mountain range. As it rises, it cools and releases much of its moisture as clouds or rain on the windward side. By the time it reaches the summit, the air is significantly drier. Then, as it descends the leeward slope, it warms rapidly and accelerates—producing a hot, dry, and powerful wind.
Why Foehn Winds Are So Dangerous for Fires
This hot, desiccating wind quickly draws moisture from grasses, leaves, branches, and all other natural fuels. Within minutes, vegetation becomes critically dry—and highly flammable. If a fire ignites under these conditions, strong Foehn winds drive rapid, unpredictable, and intense fire spread.
What makes Foehn especially hazardous is its speed of onset: conditions can shift from relatively safe to extremely dangerous in just a few minutes. A region that appeared low-risk moments earlier may suddenly become highly vulnerable to wildfire ignition and explosive growth.