How 'Polarized Meltemi' Fueled Destructive Fires in Attica and Boeotia

Meteorologist Thodoris Kolydas explained that extreme weather conditions, specifically a phenomenon known as "polarized meltemi," played a significant role in the recent destructive fires that ravaged Attica and Boeotia. Traditional meltemi winds are persistent northerly breezes in the Aegean. However, when these winds deviate from their usual pattern, they can become "polarized," characterized by increased strength, depth in the troposphere, and unusual persistence. This specific type of wind was observed during the fires in late July, with gusts reaching over 72 kilometers per hour, making it one of the most intense episodes in Greece in the last 50 years. The prolonged duration of these strong northerly winds over several consecutive days also impacted temperatures in eastern Greece. Kolydas noted that while the "polarized meltemi" can act as a natural cooling mechanism, mitigating extreme temperatures, it simultaneously heightens the risk of rapid fire propagation and creates difficulties for maritime navigation. Scientific analysis, referencing Greek literature from 1959 and ERA5 data, confirms that the late July event fits the description of a "polarized meltemi," underscoring its importance for meteorological forecasting and civil protection efforts.

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The gusts of wind exceeded 72 kilometers per hour, making the episode one of the most intense the country has faced in the last 50 years.