Greece: High temperatures forecast to persist across much of the country through at least June 14

Forecast models indicate that high temperatures will persist across much of Greece through at least June 14. The highest temperatures are forecast in the central and southern inland areas of mainland Greece due to the lack of sea breeze. Maximum temperatures of up to 41 C (106 F) are forecast. High temperatures are likely across central and southern mainland Greece June 11 before spreading to the rest of Greece and peaking June 12-13. Temperatures are forecast to drop in the western, central, and northern regions June 14 but remain high over the rest of Greece.

As of early June 11, the Hellenic National Meteorological Service has issued the following warnings across the country:

• Orange high-temperature warnings (the middle level on a three-tier scale): Attica, Central Greece, Crete, North Aegean, and eastern South Aegean regions.

• Yellow high-temperature warnings: Peloponnese and western South Aegean regions.

Authorities will likely issue new alerts or update/rescind existing advisories as weather conditions change over the coming days.

The extended period of oppressive heat and dry conditions may produce ideal circumstances for wildfire growth throughout many parts of the country. Heatwaves also pose a threat to vulnerable groups - such as the elderly, children, pregnant women, and those with respiratory illnesses - due to the increased possibility of heat stroke or heat exhaustion during prolonged exposure to high temperatures. These health risks could also extend to relatively healthy individuals during significant heatwave events. In addition to significantly impacting athletes and those who work outdoors, high temperatures can cause problems for people using mass transit. The lack of air conditioning and cramped vehicles during rush hour may lead to some passengers being hospitalized for dehydration.

Very high temperatures may warp rail tracks and force passenger and freight trains to operate at reduced speeds. Road surface damage is also possible, and overheated vehicles may worsen traffic problems in urban areas where congestion is already a problem. Commercial trucking disruptions might occur, as very high temperatures put more stress on vehicles, making tire blowouts more common. Major flight disruptions are unlikely at regional airports, but general aviation disruptions are possible, and some airfreight carriers could reduce cargo loads. High temperatures could lead to an increased demand for electricity, which might trigger localized brownouts or blackouts, exacerbating hazardous conditions when air conditioning is no longer possible.